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3 years agoof: Export of_remove_property() to modules
Florian Fainelli [Fri, 4 Sep 2020 21:37:29 +0000 (14:37 -0700)]
of: Export of_remove_property() to modules

We will need to remove some OF properties in drivers/net/dsa/bcm_sf2.c
with a subsequent commit. Export of_remove_property() to modules so we
can keep bcm_sf2 modular and provide an empty stub for when CONFIG_OF is
disabled to maintain the ability to compile test.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoMerge branch 'sfc-TXQ-refactor'
Jakub Kicinski [Sat, 5 Sep 2020 19:25:17 +0000 (12:25 -0700)]
Merge branch 'sfc-TXQ-refactor'

Edward Cree says:

====================
sfc: TXQ refactor

Refactor and unify partner-TXQ handling in the EF100 and legacy drivers.

The main thrust of this series is to remove from the legacy (Siena/EF10)
 driver the assumption that a netdev TX queue has precisely two hardware
 TXQs (checksummed and unchecksummed) associated with it, so that in
 future we can have more (e.g. for handling inner-header checksums) or
 fewer (e.g. to free up hardware queues for XDP usage).

Changes from v1:
 * better explain patch #1 in the commit message, and rename
   xmit_more_available to xmit_pending
 * add new patch #2 applying the same approach to ef100, for consistency
====================

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agosfc: remove efx_tx_queue_partner
Edward Cree [Thu, 3 Sep 2020 21:35:37 +0000 (22:35 +0100)]
sfc: remove efx_tx_queue_partner

All users of this function are now gone.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agosfc: rewrite efx_tx_may_pio
Edward Cree [Thu, 3 Sep 2020 21:35:29 +0000 (22:35 +0100)]
sfc: rewrite efx_tx_may_pio

Use efx_for_each_channel_tx_queue() rather than efx_tx_queue_partner().
Make some related simplifications of efx_nic_tx_is_empty() to remove
 entry points that aren't used.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agosfc: use efx_channel_tx_[old_]fill_level() in Siena/EF10 TX datapath
Edward Cree [Thu, 3 Sep 2020 21:35:13 +0000 (22:35 +0100)]
sfc: use efx_channel_tx_[old_]fill_level() in Siena/EF10 TX datapath

Instead of open-coding the calculation with efx_tx_queue_partner(), use
 the functions that iterate over numbers of queues other than 2 with
 efx_for_each_channel_tx_queue().

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agosfc: use tx_queue->old_read_count in EF100 TX path
Edward Cree [Thu, 3 Sep 2020 21:34:57 +0000 (22:34 +0100)]
sfc: use tx_queue->old_read_count in EF100 TX path

As in the Siena/EF10 case, it minimises cacheline ping-pong between
 the TX and completion paths.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agosfc: make ef100 xmit_more handling look more like ef10's
Edward Cree [Thu, 3 Sep 2020 21:34:42 +0000 (22:34 +0100)]
sfc: make ef100 xmit_more handling look more like ef10's

This should cause no functional change; merely make there only be one
 design of xmit_more handling to understand.  As with the EF10/Siena
 version, we set tx_queue->xmit_pending when we queue up a TX, and
 clear it when we ring the doorbell (in ef100_notify_tx_desc).
While we're at it, make ef100_notify_tx_desc static since nothing
 outside of ef100_tx.c uses it.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agosfc: add and use efx_tx_send_pending in tx.c
Edward Cree [Thu, 3 Sep 2020 21:34:15 +0000 (22:34 +0100)]
sfc: add and use efx_tx_send_pending in tx.c

Instead of using efx_tx_queue_partner(), which relies on the assumption
 that tx_queues_per_channel is 2, efx_tx_send_pending() iterates over
 txqs with efx_for_each_channel_tx_queue().
We unconditionally set tx_queue->xmit_pending (renamed from
 xmit_more_available), then condition on xmit_more for the call to
 efx_tx_send_pending(), which will clear xmit_pending.  Thus, after an
 xmit_more TX, the doorbell is un-rung and xmit_pending is true.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Jakub Kicinski [Sat, 5 Sep 2020 04:18:58 +0000 (21:18 -0700)]
Merge git://git./linux/kernel/git/netdev/net

We got slightly different patches removing a double word
in a comment in net/ipv4/raw.c - picked the version from net.

Simple conflict in drivers/net/ethernet/ibm/ibmvnic.c. Use cached
values instead of VNIC login response buffer (following what
commit 507ebe6444a4 ("ibmvnic: Fix use-after-free of VNIC login
response buffer") did).

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoMerge tag 's390-5.9-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Linus Torvalds [Fri, 4 Sep 2020 20:46:33 +0000 (13:46 -0700)]
Merge tag 's390-5.9-5' of git://git./linux/kernel/git/s390/linux

Pull s390 fixes from Vasily Gorbik:

 - Fix GENERIC_LOCKBREAK dependency on PREEMPTION in Kconfig broken
   because of a typo

 - Update defconfigs

* tag 's390-5.9-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390: update defconfigs
  s390: fix GENERIC_LOCKBREAK dependency typo in Kconfig

3 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 4 Sep 2020 20:40:59 +0000 (13:40 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:

 - Fix the loading of modules built with binutils-2.35. This version
   produces writable and executable .text.ftrace_trampoline section
   which is rejected by the kernel.

 - Remove the exporting of cpu_logical_map() as the Tegra driver has now
   been fixed and no longer uses this function.

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64/module: set trampoline section flags regardless of CONFIG_DYNAMIC_FTRACE
  arm64: Remove exporting cpu_logical_map symbol

3 years agoMerge tag 'mips_fixes_5.9_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips...
Linus Torvalds [Fri, 4 Sep 2020 20:37:19 +0000 (13:37 -0700)]
Merge tag 'mips_fixes_5.9_1' of git://git./linux/kernel/git/mips/linux

Pull MIPS fixes from Thomas Bogendoerfer:
 "A few MIPS fixes:

   - fallthrough fallout fix

   - BMIPS fixes

   - MSA fix to avoid leaking MSA register contents

   - Loongson perf and cpu feature fix

   - SNI interrupt fix"

* tag 'mips_fixes_5.9_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  MIPS: SNI: Fix SCSI interrupt
  MIPS: add missing MSACSR and upper MSA initialization
  MIPS: perf: Fix wrong check condition of Loongson event IDs
  mips/oprofile: Fix fallthrough placement
  MIPS: Loongson64: Remove unnecessary inclusion of boot_param.h
  MIPS: BMIPS: Also call bmips_cpu_setup() for secondary cores
  MIPS: mm: BMIPS5000 has inclusive physical caches
  MIPS: Loongson64: Do not override watch and ejtag feature

3 years agoMerge tag 'kbuild-fixes-v5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 4 Sep 2020 20:34:52 +0000 (13:34 -0700)]
Merge tag 'kbuild-fixes-v5.9-2' of git://git./linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - fix documents

 - fix warning in 'make localmodconfig'

* tag 'kbuild-fixes-v5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kconfig: remove redundant assignment prompt = prompt
  kbuild: Documentation: clean up makefiles.rst
  kconfig: streamline_config.pl: check defined(ENV variable) before using it
  Documentation/llvm: Improve formatting of commands, variables, and arguments

3 years agoMerge tag 'pm-5.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Fri, 4 Sep 2020 20:27:24 +0000 (13:27 -0700)]
Merge tag 'pm-5.9-rc4' of git://git./linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix reference counting in the operating performance points (OPP)
  framework and address a few intel_pstate driver issues, mostly related
  to switching driver operation modes and similar with hardware-managed
  P-states (HWP) enabled.

  Specifics:

   - Fix reference counting of operating performance points (OPP) tables
     (Viresh Kumar).

   - Address intel_pstate driver interface issues, mostly related to
     switching operation modes and handling CPU offline and online and
     system-wide suspend/resume with hardware-managed P-states (HWP)
     enabled (Rafael Wysocki).

   - Fix the maximum frequency computation in the intel_pstate driver
     with turbo P-states disabled by the platform firmware and HWP
     enabled (Francisco Jerez)"

* tag 'pm-5.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: intel_pstate: Fix intel_pstate_get_hwp_max() for turbo disabled
  cpufreq: intel_pstate: Free memory only when turning off
  cpufreq: intel_pstate: Add ->offline and ->online callbacks
  cpufreq: intel_pstate: Tweak the EPP sysfs interface
  cpufreq: intel_pstate: Update cached EPP in the active mode
  cpufreq: intel_pstate: Refuse to turn off with HWP enabled
  opp: Don't drop reference for an OPP table that was never parsed

3 years agoMerge tag 'libata-5.9-2020-09-04' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 4 Sep 2020 20:19:19 +0000 (13:19 -0700)]
Merge tag 'libata-5.9-2020-09-04' of git://git.kernel.dk/linux-block

Pull libata fixes from Jens Axboe:

 - improve Sandisks ATA_HORKAGE on NCQ (Tejun)

 - link printk cleanup (Xu)

* tag 'libata-5.9-2020-09-04' of git://git.kernel.dk/linux-block:
  libata: implement ATA_HORKAGE_MAX_TRIM_128M and apply to Sandisks
  ata: ahci: use ata_link_info() instead of ata_link_printk()

3 years agoMerge tag 'block-5.9-2020-09-04' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 4 Sep 2020 20:04:51 +0000 (13:04 -0700)]
Merge tag 'block-5.9-2020-09-04' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "A bit larger than usual this week, mostly due to the NVMe fixes
  arriving late for -rc3 and hence didn't make last weeks pull request.

   - NVMe:
        - instance leak and io boundary fixes from Keith
        - fc locking fix from Christophe
        - various tcp/rdma reset during traffic fixes from Sagi
        - pci use-after-free fix from Tong
        - tcp target null deref fix from Ziye

   - Locking fix for partition removal (Christoph)

   - Ensure bdi->io_pages is always set (me)

   - Fixup for hd struct reference (Ming)

   - Fix for zero length bvecs (Ming)

   - Two small blk-iocost fixes (Tejun)"

* tag 'block-5.9-2020-09-04' of git://git.kernel.dk/linux-block:
  block: allow for_each_bvec to support zero len bvec
  blk-stat: make q->stats->lock irqsafe
  blk-iocost: ioc_pd_free() shouldn't assume irq disabled
  block: fix locking in bdev_del_partition
  block: release disk reference in hd_struct_free_work
  block: ensure bdi->io_pages is always initialized
  nvme-pci: cancel nvme device request before disabling
  nvme: only use power of two io boundaries
  nvme: fix controller instance leak
  nvmet-fc: Fix a missed _irqsave version of spin_lock in 'nvmet_fc_fod_op_done()'
  nvme: Fix NULL dereference for pci nvme controllers
  nvme-rdma: fix reset hang if controller died in the middle of a reset
  nvme-rdma: fix timeout handler
  nvme-rdma: serialize controller teardown sequences
  nvme-tcp: fix reset hang if controller died in the middle of a reset
  nvme-tcp: fix timeout handler
  nvme-tcp: serialize controller teardown sequences
  nvme: have nvme_wait_freeze_timeout return if it timed out
  nvme-fabrics: don't check state NVME_CTRL_NEW for request acceptance
  nvmet-tcp: Fix NULL dereference when a connect data comes in h2cdata pdu

3 years agoMerge tag 'io_uring-5.9-2020-09-04' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 4 Sep 2020 19:55:22 +0000 (12:55 -0700)]
Merge tag 'io_uring-5.9-2020-09-04' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:

 - EAGAIN with O_NONBLOCK retry fix

 - Two small fixes for registered files (Jiufei)

* tag 'io_uring-5.9-2020-09-04' of git://git.kernel.dk/linux-block:
  io_uring: no read/write-retry on -EAGAIN error and O_NONBLOCK marked file
  io_uring: set table->files[i] to NULL when io_sqe_file_register failed
  io_uring: fix removing the wrong file in __io_sqe_files_update()

3 years agoMerge tag 'thermal-v5.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal...
Linus Torvalds [Fri, 4 Sep 2020 19:49:03 +0000 (12:49 -0700)]
Merge tag 'thermal-v5.9-rc4' of git://git./linux/kernel/git/thermal/linux

Pull thermal fixes from Daniel Lezcano:

 - Fix bogus thermal shutdowns for omap4430 where bogus values resulting
   from an incorrect ADC conversion are too high and fire an emergency
   shutdown (Tony Lindgren)

 - Don't suppress negative temp for qcom spmi as they are valid and
   userspace needs them (Veera Vegivada)

 - Fix use-after-free in thermal_zone_device_unregister reported by
   Kasan (Dmitry Osipenko)

* tag 'thermal-v5.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux:
  thermal: core: Fix use-after-free in thermal_zone_device_unregister()
  thermal: qcom-spmi-temp-alarm: Don't suppress negative temp
  thermal: ti-soc-thermal: Fix bogus thermal shutdowns for omap4430

3 years agoMerge tag 'dmaengine-fix-5.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 4 Sep 2020 19:12:39 +0000 (12:12 -0700)]
Merge tag 'dmaengine-fix-5.9-rc4' of git://git./linux/kernel/git/vkoul/dmaengine

Pull dmaengine fixes from Vinod Koul:
 "A couple of core fixes and odd driver fixes for dmaengine subsystem:

  Core:
   - drop ACPI CSRT table reference after using it
   - fix of_dma_router_xlate() error handling

  Drivers fixes in idxd, at_hdmac, pl330, dw-edma and jz478"

* tag 'dmaengine-fix-5.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine:
  dmaengine: ti: k3-udma: Update rchan_oes_offset for am654 SYSFW ABI 3.0
  drivers/dma/dma-jz4780: Fix race condition between probe and irq handler
  dmaengine: dw-edma: Fix scatter-gather address calculation
  dmaengine: ti: k3-udma: Fix the TR initialization for prep_slave_sg
  dmaengine: pl330: Fix burst length if burst size is smaller than bus width
  dmaengine: at_hdmac: add missing kfree() call in at_dma_xlate()
  dmaengine: at_hdmac: add missing put_device() call in at_dma_xlate()
  dmaengine: at_hdmac: check return value of of_find_device_by_node() in at_dma_xlate()
  dmaengine: of-dma: Fix of_dma_router_xlate's of_dma_xlate handling
  dmaengine: idxd: reset states after device disable or reset
  dmaengine: acpi: Put the CSRT table after using it

3 years agoMerge tag 'sound-5.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Fri, 4 Sep 2020 19:05:25 +0000 (12:05 -0700)]
Merge tag 'sound-5.9-rc4' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A collection of small changes, nothing intrusive:

   - remaining tasklet API conversions, now all sound stuff have been
     converted

   - a few HD-audio and USB-audio quirks and minor fixes

   - FireWire Tascam and Digi00xx fixes

   - drop a kernel WARNING from PCM OSS for syzkaller"

* tag 'sound-5.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (29 commits)
  ALSA: hda/realtek - Improved routing for Thinkpad X1 7th/8th Gen
  ALSA: hda: use consistent HDAudio spelling in comments/docs
  ALSA: hda: add dev_dbg log when driver is not selected
  ALSA: hda: fix a runtime pm issue in SOF when integrated GPU is disabled
  ALSA: hda: hdmi - add Rocketlake support
  ALSA: ua101: convert tasklets to use new tasklet_setup() API
  ALSA: usb-audio: convert tasklets to use new tasklet_setup() API
  ASoC: txx9: convert tasklets to use new tasklet_setup() API
  ASoC: siu: convert tasklets to use new tasklet_setup() API
  ASoC: fsl_esai: convert tasklets to use new tasklet_setup() API
  ALSA: hdsp: convert tasklets to use new tasklet_setup() API
  ALSA: riptide: convert tasklets to use new tasklet_setup() API
  ALSA: pci/asihpi: convert tasklets to use new tasklet_setup() API
  ALSA: firewire: convert tasklets to use new tasklet_setup() API
  ALSA: core: convert tasklets to use new tasklet_setup() API
  ALSA: pcm: oss: Remove superfluous WARN_ON() for mulaw sanity check
  ALSA: hda - Fix silent audio output and corrupted input on MSI X570-A PRO
  ALSA: hda/hdmi: always check pin power status in i915 pin fixup
  ALSA: hda/realtek: Add quirk for Samsung Galaxy Book Ion NT950XCJ-X716A
  ALSA: usb-audio: Add basic capture support for Pioneer DJ DJM-250MK2
  ...

3 years agoMerge tag 'drm-fixes-2020-09-04' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Fri, 4 Sep 2020 18:59:44 +0000 (11:59 -0700)]
Merge tag 'drm-fixes-2020-09-04' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Not much going on this week, nouveau has a display hw bug workaround,
  amdgpu has some PM fixes and CIK regression fixes, one single radeon
  PLL fix, and a couple of i915 display fixes.

  amdgpu:
   - Fix for 32bit systems
   - SW CTF fix
   - Update for Sienna Cichlid
   - CIK bug fixes

  radeon:
   - PLL fix

  i915:
   - Clang build warning fix
   - HDCP fixes

  nouveau:
   - display fixes"

* tag 'drm-fixes-2020-09-04' of git://anongit.freedesktop.org/drm/drm:
  drm/nouveau/kms/nv50-gp1xx: add WAR for EVO push buffer HW bug
  drm/nouveau/kms/nv50-gp1xx: disable notifies again after core update
  drm/nouveau/kms/nv50-: add some whitespace before debug message
  drm/nouveau/kms/gv100-: Include correct push header in crcc37d.c
  drm/radeon: Prefer lower feedback dividers
  drm/amdgpu: Fix bug in reporting voltage for CIK
  drm/amdgpu: Specify get_argument function for ci_smu_funcs
  drm/amd/pm: enable MP0 DPM for sienna_cichlid
  drm/amd/pm: avoid false alarm due to confusing softwareshutdowntemp setting
  drm/amd/pm: fix is_dpm_running() run error on 32bit system
  drm/i915: Clear the repeater bit on HDCP disable
  drm/i915: Fix sha_text population code
  drm/i915/display: Ensure that ret is always initialized in icl_combo_phy_verify_state

3 years agonet/packet: fix overflow in tpacket_rcv
Or Cohen [Fri, 4 Sep 2020 04:05:28 +0000 (21:05 -0700)]
net/packet: fix overflow in tpacket_rcv

Using tp_reserve to calculate netoff can overflow as
tp_reserve is unsigned int and netoff is unsigned short.

This may lead to macoff receving a smaller value then
sizeof(struct virtio_net_hdr), and if po->has_vnet_hdr
is set, an out-of-bounds write will occur when
calling virtio_net_hdr_from_skb.

The bug is fixed by converting netoff to unsigned int
and checking if it exceeds USHRT_MAX.

This addresses CVE-2020-14386

Fixes: 8913336a7e8d ("packet: add PACKET_RESERVE sockopt")
Signed-off-by: Or Cohen <orcohen@paloaltonetworks.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMerge branch 'simplify-do_wp_page'
Linus Torvalds [Fri, 4 Sep 2020 16:31:54 +0000 (09:31 -0700)]
Merge branch 'simplify-do_wp_page'

Merge emailed patches from Peter Xu:
 "This is a small series that I picked up from Linus's suggestion to
  simplify cow handling (and also make it more strict) by checking
  against page refcounts rather than mapcounts.

  This makes uffd-wp work again (verified by running upmapsort)"

Note: this is horrendously bad timing, and making this kind of
fundamental vm change after -rc3 is not at all how things should work.
The saving grace is that it really is a a nice simplification:

 8 files changed, 29 insertions(+), 120 deletions(-)

The reason for the bad timing is that it turns out that commit
17839856fd58 ("gup: document and work around 'COW can break either way'
issue" broke not just UFFD functionality (as Peter noticed), but Mikulas
Patocka also reports that it caused issues for strace when running in a
DAX environment with ext4 on a persistent memory setup.

And we can't just revert that commit without re-introducing the original
issue that is a potential security hole, so making COW stricter (and in
the process much simpler) is a step to then undoing the forced COW that
broke other uses.

Link: https://lore.kernel.org/lkml/alpine.LRH.2.02.2009031328040.6929@file01.intranet.prod.int.rdu2.redhat.com/
* emailed patches from Peter Xu <peterx@redhat.com>:
  mm: Add PGREUSE counter
  mm/gup: Remove enfornced COW mechanism
  mm/ksm: Remove reuse_ksm_page()
  mm: do_wp_page() simplification

3 years agoMerge branch 'pm-cpufreq'
Rafael J. Wysocki [Fri, 4 Sep 2020 16:31:25 +0000 (18:31 +0200)]
Merge branch 'pm-cpufreq'

* pm-cpufreq:
  cpufreq: intel_pstate: Fix intel_pstate_get_hwp_max() for turbo disabled
  cpufreq: intel_pstate: Free memory only when turning off
  cpufreq: intel_pstate: Add ->offline and ->online callbacks
  cpufreq: intel_pstate: Tweak the EPP sysfs interface
  cpufreq: intel_pstate: Update cached EPP in the active mode
  cpufreq: intel_pstate: Refuse to turn off with HWP enabled

3 years agomm: Add PGREUSE counter
Peter Xu [Fri, 21 Aug 2020 23:49:58 +0000 (19:49 -0400)]
mm: Add PGREUSE counter

This accounts for wp_page_reuse() case, where we reused a page for COW.

Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agomm/gup: Remove enfornced COW mechanism
Peter Xu [Fri, 21 Aug 2020 23:49:57 +0000 (19:49 -0400)]
mm/gup: Remove enfornced COW mechanism

With the more strict (but greatly simplified) page reuse logic in
do_wp_page(), we can safely go back to the world where cow is not
enforced with writes.

This essentially reverts commit 17839856fd58 ("gup: document and work
around 'COW can break either way' issue").  There are some context
differences due to some changes later on around it:

  2170ecfa7688 ("drm/i915: convert get_user_pages() --> pin_user_pages()", 2020-06-03)
  376a34efa4ee ("mm/gup: refactor and de-duplicate gup_fast() code", 2020-06-03)

Some lines moved back and forth with those, but this revert patch should
have striped out and covered all the enforced cow bits anyways.

Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agomm/ksm: Remove reuse_ksm_page()
Peter Xu [Fri, 21 Aug 2020 23:49:56 +0000 (19:49 -0400)]
mm/ksm: Remove reuse_ksm_page()

Remove the function as the last reference has gone away with the do_wp_page()
changes.

Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agomm: do_wp_page() simplification
Linus Torvalds [Fri, 21 Aug 2020 23:49:55 +0000 (19:49 -0400)]
mm: do_wp_page() simplification

How about we just make sure we're the only possible valid user fo the
page before we bother to reuse it?

Simplify, simplify, simplify.

And get rid of the nasty serialization on the page lock at the same time.

[peterx: add subject prefix]

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agogcov: Disable gcov build with GCC 10
Leon Romanovsky [Fri, 4 Sep 2020 15:58:08 +0000 (18:58 +0300)]
gcov: Disable gcov build with GCC 10

GCOV built with GCC 10 doesn't initialize n_function variable.  This
produces different kernel panics as was seen by Colin in Ubuntu and me
in FC 32.

As a workaround, let's disable GCOV build for broken GCC 10 version.

Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1891288
Link: https://lore.kernel.org/lkml/20200827133932.3338519-1-leon@kernel.org
Link: https://lore.kernel.org/lkml/CAHk-=whbijeSdSvx-Xcr0DPMj0BiwhJ+uiNnDSVZcr_h_kg7UA@mail.gmail.com/
Cc: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoinit: fix error check in clean_path()
Barret Rhoden [Fri, 4 Sep 2020 13:53:32 +0000 (09:53 -0400)]
init: fix error check in clean_path()

init_stat() returns 0 on success, same as vfs_lstat().  When it replaced
vfs_lstat(), the '!' was dropped.

Fixes: 716308a5331b ("init: add an init_stat helper")
Signed-off-by: Barret Rhoden <brho@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agothermal: core: Fix use-after-free in thermal_zone_device_unregister()
Dmitry Osipenko [Mon, 17 Aug 2020 23:58:54 +0000 (02:58 +0300)]
thermal: core: Fix use-after-free in thermal_zone_device_unregister()

The user-after-free bug in thermal_zone_device_unregister() is reported by
KASAN. It happens because struct thermal_zone_device is released during of
device_unregister() invocation, and hence the "tz" variable shouldn't be
touched by thermal_notify_tz_delete(tz->id).

Fixes: 55cdf0a283b8 ("thermal: core: Add notifications call in the framework")
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20200817235854.26816-1-digetx@gmail.com
3 years agothermal: qcom-spmi-temp-alarm: Don't suppress negative temp
Veera Vegivada [Wed, 29 Jul 2020 16:52:51 +0000 (09:52 -0700)]
thermal: qcom-spmi-temp-alarm: Don't suppress negative temp

Currently driver is suppressing the negative temperature
readings from the vadc. Consumers of the thermal zones need
to read the negative temperature too. Don't suppress the
readings.

Fixes: c610afaa21d3c6e ("thermal: Add QPNP PMIC temperature alarm driver")
Signed-off-by: Veera Vegivada <vvegivad@codeaurora.org>
Signed-off-by: Guru Das Srinagesh <gurus@codeaurora.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/944856eb819081268fab783236a916257de120e4.1596040416.git.gurus@codeaurora.org
3 years agothermal: ti-soc-thermal: Fix bogus thermal shutdowns for omap4430
Tony Lindgren [Mon, 6 Jul 2020 18:33:38 +0000 (11:33 -0700)]
thermal: ti-soc-thermal: Fix bogus thermal shutdowns for omap4430

We can sometimes get bogus thermal shutdowns on omap4430 at least with
droid4 running idle with a battery charger connected:

thermal thermal_zone0: critical temperature reached (143 C), shutting down

Dumping out the register values shows we can occasionally get a 0x7f value
that is outside the TRM listed values in the ADC conversion table. And then
we get a normal value when reading again after that. Reading the register
multiple times does not seem help avoiding the bogus values as they stay
until the next sample is ready.

Looking at the TRM chapter "18.4.10.2.3 ADC Codes Versus Temperature", we
should have values from 13 to 107 listed with a total of 95 values. But
looking at the omap4430_adc_to_temp array, the values are off, and the
end values are missing. And it seems that the 4430 ADC table is similar
to omap3630 rather than omap4460.

Let's fix the issue by using values based on the omap3630 table and just
ignoring invalid values. Compared to the 4430 TRM, the omap3630 table has
the missing values added while the TRM table only shows every second
value.

Note that sometimes the ADC register values within the valid table can
also be way off for about 1 out of 10 values. But it seems that those
just show about 25 C too low values rather than too high values. So those
do not cause a bogus thermal shutdown.

Fixes: 1a31270e54d7 ("staging: omap-thermal: add OMAP4 data structures")
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20200706183338.25622-1-tony@atomide.com
3 years agoMerge tag 'perf-tools-fixes-for-v5.9-2020-09-03' of git://git.kernel.org/pub/scm...
Linus Torvalds [Fri, 4 Sep 2020 02:10:43 +0000 (19:10 -0700)]
Merge tag 'perf-tools-fixes-for-v5.9-2020-09-03' of git://git./linux/kernel/git/acme/linux

Pull more perf tools fixes from Arnaldo Carvalho de Melo:

 - Use uintptr_t when casting numbers to pointers

 - Keep output expected by 3rd parties: Turn off summary for interval
   mode by default.

 - BPF is in kernel space, make sure do_validate_kcore_modules() knows
   about that.

 - Explicitly call out event modifiers in the documentation.

 - Fix jevents() allocation of space for regular expressions.

 - Address libtraceevent build warnings on 32-bit arches.

 - Fix checking of functions returns using ERR_PTR() in 'perf bench'.

* tag 'perf-tools-fixes-for-v5.9-2020-09-03' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf tools: Add bpf image check to __map__is_kmodule
  perf record/stat: Explicitly call out event modifiers in the documentation
  perf bench: The do_run_multi_threaded() function must use IS_ERR(perf_session__new())
  perf stat: Turn off summary for interval mode by default
  libtraceevent: Fix build warning on 32-bit arches
  perf jevents: Fix suspicious code in fixregex()
  perf parse-events: Use uintptr_t when casting numbers to pointers

3 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Linus Torvalds [Fri, 4 Sep 2020 01:50:48 +0000 (18:50 -0700)]
Merge git://git./linux/kernel/git/netdev/net

Pull networking fixes from David Miller:

 1) Use netif_rx_ni() when necessary in batman-adv stack, from Jussi
    Kivilinna.

 2) Fix loss of RTT samples in rxrpc, from David Howells.

 3) Memory leak in hns_nic_dev_probe(), from Dignhao Liu.

 4) ravb module cannot be unloaded, fix from Yuusuke Ashizuka.

 5) We disable BH for too lokng in sctp_get_port_local(), add a
    cond_resched() here as well, from Xin Long.

 6) Fix memory leak in st95hf_in_send_cmd, from Dinghao Liu.

 7) Out of bound access in bpf_raw_tp_link_fill_link_info(), from
    Yonghong Song.

 8) Missing of_node_put() in mt7530 DSA driver, from Sumera
    Priyadarsini.

 9) Fix crash in bnxt_fw_reset_task(), from Michael Chan.

10) Fix geneve tunnel checksumming bug in hns3, from Yi Li.

11) Memory leak in rxkad_verify_response, from Dinghao Liu.

12) In tipc, don't use smp_processor_id() in preemptible context. From
    Tuong Lien.

13) Fix signedness issue in mlx4 memory allocation, from Shung-Hsi Yu.

14) Missing clk_disable_prepare() in gemini driver, from Dan Carpenter.

15) Fix ABI mismatch between driver and firmware in nfp, from Louis
    Peens.

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (110 commits)
  net/smc: fix sock refcounting in case of termination
  net/smc: reset sndbuf_desc if freed
  net/smc: set rx_off for SMCR explicitly
  net/smc: fix toleration of fake add_link messages
  tg3: Fix soft lockup when tg3_reset_task() fails.
  doc: net: dsa: Fix typo in config code sample
  net: dp83867: Fix WoL SecureOn password
  nfp: flower: fix ABI mismatch between driver and firmware
  tipc: fix shutdown() of connectionless socket
  ipv6: Fix sysctl max for fib_multipath_hash_policy
  drivers/net/wan/hdlc: Change the default of hard_header_len to 0
  net: gemini: Fix another missing clk_disable_unprepare() in probe
  net: bcmgenet: fix mask check in bcmgenet_validate_flow()
  amd-xgbe: Add support for new port mode
  net: usb: dm9601: Add USB ID of Keenetic Plus DSL
  vhost: fix typo in error message
  net: ethernet: mlx4: Fix memory allocation in mlx4_buddy_init()
  pktgen: fix error message with wrong function name
  net: ethernet: ti: am65-cpsw: fix rmii 100Mbit link mode
  cxgb4: fix thermal zone device registration
  ...

3 years agoMerge branch 'gate-page-refcount' (patches from Dave Hansen)
Linus Torvalds [Fri, 4 Sep 2020 01:43:06 +0000 (18:43 -0700)]
Merge branch 'gate-page-refcount' (patches from Dave Hansen)

Merge gate page refcount fix from Dave Hansen:
 "During the conversion over to pin_user_pages(), gate pages were missed.

  The fix is pretty simple, and is accompanied by a new test from Andy
  which probably would have caught this earlier"

* emailed patches from Dave Hansen <dave.hansen@linux.intel.com>:
  selftests/x86/test_vsyscall: Improve the process_vm_readv() test
  mm: fix pin vs. gup mismatch with gate pages

3 years agoselftests/x86/test_vsyscall: Improve the process_vm_readv() test
Andy Lutomirski [Thu, 3 Sep 2020 20:40:30 +0000 (13:40 -0700)]
selftests/x86/test_vsyscall: Improve the process_vm_readv() test

The existing code accepted process_vm_readv() success or failure as long
as it didn't return garbage.  This is too weak: if the vsyscall page is
readable, then process_vm_readv() should succeed and, if the page is not
readable, then it should fail.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: x86@kernel.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Jann Horn <jannh@google.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agomm: fix pin vs. gup mismatch with gate pages
Dave Hansen [Thu, 3 Sep 2020 20:40:28 +0000 (13:40 -0700)]
mm: fix pin vs. gup mismatch with gate pages

Gate pages were missed when converting from get to pin_user_pages().
This can lead to refcount imbalances.  This is reliably and quickly
reproducible running the x86 selftests when vsyscall=emulate is enabled
(the default).  Fix by using try_grab_page() with appropriate flags
passed.

The long story:

Today, pin_user_pages() and get_user_pages() are similar interfaces for
manipulating page reference counts.  However, "pins" use a "bias" value
and manipulate the actual reference count by 1024 instead of 1 used by
plain "gets".

That means that pin_user_pages() must be matched with unpin_user_pages()
and can't be mixed with a plain put_user_pages() or put_page().

Enter gate pages, like the vsyscall page.  They are pages usually in the
kernel image, but which are mapped to userspace.  Userspace is allowed
access to them, including interfaces using get/pin_user_pages().  The
refcount of these kernel pages is manipulated just like a normal user
page on the get/pin side so that the put/unpin side can work the same
for normal user pages or gate pages.

get_gate_page() uses try_get_page() which only bumps the refcount by
1, not 1024, even if called in the pin_user_pages() path.  If someone
pins a gate page, this happens:

pin_user_pages()
get_gate_page()
try_get_page() // bump refcount +1
... some time later
unpin_user_pages()
page_ref_sub_and_test(page, 1024))

... and boom, we get a refcount off by 1023.  This is reliably and
quickly reproducible running the x86 selftests when booted with
vsyscall=emulate (the default).  The selftests use ptrace(), but I
suspect anything using pin_user_pages() on gate pages could hit this.

To fix it, simply use try_grab_page() instead of try_get_page(), and
pass 'gup_flags' in so that FOLL_PIN can be respected.

This bug traces back to the very beginning of the FOLL_PIN support in
commit 3faa52c03f44 ("mm/gup: track FOLL_PIN pages"), which showed up in
the 5.7 release.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Fixes: 3faa52c03f44 ("mm/gup: track FOLL_PIN pages")
Reported-by: Peter Zijlstra <peterz@infradead.org>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: x86@kernel.org
Cc: Jann Horn <jannh@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMerge branch 'linux-5.9' of git://github.com/skeggsb/linux into drm-fixes
Dave Airlie [Fri, 4 Sep 2020 01:14:24 +0000 (11:14 +1000)]
Merge branch 'linux-5.9' of git://github.com/skeggsb/linux into drm-fixes

A couple of minor fixes to the display changes that went in for 5.9.
The most important of which is a workaround for a HW bug that was
exposed by better push buffer space management, leading to
random(ish...) display engine hangs.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Ben Skeggs <skeggsb@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/
3 years agoMerge tag 'drm-intel-fixes-2020-09-03' of git://anongit.freedesktop.org/drm/drm-intel...
Dave Airlie [Fri, 4 Sep 2020 01:00:47 +0000 (11:00 +1000)]
Merge tag 'drm-intel-fixes-2020-09-03' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

drm/i915 fixes for v5.9-rc4:
- Clang build warning fix
- HDCP fixes

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87sgbz2pnx.fsf@intel.com
3 years agoMerge tag 'amd-drm-fixes-5.9-2020-09-03' of git://people.freedesktop.org/~agd5f/linux...
Dave Airlie [Fri, 4 Sep 2020 00:51:27 +0000 (10:51 +1000)]
Merge tag 'amd-drm-fixes-5.9-2020-09-03' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

amd-drm-fixes-5.9-2020-09-03:

amdgpu:
- Fix for 32bit systems
- SW CTF fix
- Update for Sienna Cichlid
- CIK bug fixes

radeon:
- PLL fix

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200903050022.3960-1-alexander.deucher@amd.com
3 years agosmsc9420: switch from 'pci_' to 'dma_' API
Christophe JAILLET [Thu, 3 Sep 2020 20:10:55 +0000 (22:10 +0200)]
smsc9420: switch from 'pci_' to 'dma_' API

The wrappers in include/linux/pci-dma-compat.h should go away.

The patch has been generated with the coccinelle script below and has been
hand modified to replace GFP_ with a correct flag.
It has been compile tested.

When memory is allocated in 'smsc9420_probe()', GFP_KERNEL can be used
because it is a probe function and no lock is acquired.

While at it, rewrite the size passed to 'dma_alloc_coherent()' the same way
as the one passed to 'dma_free_coherent()'. This form is less verbose:
   sizeof(struct smsc9420_dma_desc) * RX_RING_SIZE +
   sizeof(struct smsc9420_dma_desc) * TX_RING_SIZE,
vs
   sizeof(struct smsc9420_dma_desc) * (RX_RING_SIZE + TX_RING_SIZE)

@@
@@
-    PCI_DMA_BIDIRECTIONAL
+    DMA_BIDIRECTIONAL

@@
@@
-    PCI_DMA_TODEVICE
+    DMA_TO_DEVICE

@@
@@
-    PCI_DMA_FROMDEVICE
+    DMA_FROM_DEVICE

@@
@@
-    PCI_DMA_NONE
+    DMA_NONE

@@
expression e1, e2, e3;
@@
-    pci_alloc_consistent(e1, e2, e3)
+    dma_alloc_coherent(&e1->dev, e2, e3, GFP_)

@@
expression e1, e2, e3;
@@
-    pci_zalloc_consistent(e1, e2, e3)
+    dma_alloc_coherent(&e1->dev, e2, e3, GFP_)

@@
expression e1, e2, e3, e4;
@@
-    pci_free_consistent(e1, e2, e3, e4)
+    dma_free_coherent(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_map_single(e1, e2, e3, e4)
+    dma_map_single(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_single(e1, e2, e3, e4)
+    dma_unmap_single(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4, e5;
@@
-    pci_map_page(e1, e2, e3, e4, e5)
+    dma_map_page(&e1->dev, e2, e3, e4, e5)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_page(e1, e2, e3, e4)
+    dma_unmap_page(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_map_sg(e1, e2, e3, e4)
+    dma_map_sg(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_sg(e1, e2, e3, e4)
+    dma_unmap_sg(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_single_for_cpu(e1, e2, e3, e4)
+    dma_sync_single_for_cpu(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_single_for_device(e1, e2, e3, e4)
+    dma_sync_single_for_device(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_sg_for_cpu(e1, e2, e3, e4)
+    dma_sync_sg_for_cpu(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_sg_for_device(e1, e2, e3, e4)
+    dma_sync_sg_for_device(&e1->dev, e2, e3, e4)

@@
expression e1, e2;
@@
-    pci_dma_mapping_error(e1, e2)
+    dma_mapping_error(&e1->dev, e2)

@@
expression e1, e2;
@@
-    pci_set_dma_mask(e1, e2)
+    dma_set_mask(&e1->dev, e2)

@@
expression e1, e2;
@@
-    pci_set_consistent_dma_mask(e1, e2)
+    dma_set_coherent_mask(&e1->dev, e2)

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoepic100: switch from 'pci_' to 'dma_' API
Christophe JAILLET [Thu, 3 Sep 2020 20:05:09 +0000 (22:05 +0200)]
epic100: switch from 'pci_' to 'dma_' API

The wrappers in include/linux/pci-dma-compat.h should go away.

The patch has been generated with the coccinelle script below and has been
hand modified to replace GFP_ with a correct flag.
It has been compile tested.

When memory is allocated in 'epic_init_one()', GFP_KERNEL can be used
because it is a probe function and no lock is acquired.

@@
@@
-    PCI_DMA_BIDIRECTIONAL
+    DMA_BIDIRECTIONAL

@@
@@
-    PCI_DMA_TODEVICE
+    DMA_TO_DEVICE

@@
@@
-    PCI_DMA_FROMDEVICE
+    DMA_FROM_DEVICE

@@
@@
-    PCI_DMA_NONE
+    DMA_NONE

@@
expression e1, e2, e3;
@@
-    pci_alloc_consistent(e1, e2, e3)
+    dma_alloc_coherent(&e1->dev, e2, e3, GFP_)

@@
expression e1, e2, e3;
@@
-    pci_zalloc_consistent(e1, e2, e3)
+    dma_alloc_coherent(&e1->dev, e2, e3, GFP_)

@@
expression e1, e2, e3, e4;
@@
-    pci_free_consistent(e1, e2, e3, e4)
+    dma_free_coherent(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_map_single(e1, e2, e3, e4)
+    dma_map_single(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_single(e1, e2, e3, e4)
+    dma_unmap_single(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4, e5;
@@
-    pci_map_page(e1, e2, e3, e4, e5)
+    dma_map_page(&e1->dev, e2, e3, e4, e5)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_page(e1, e2, e3, e4)
+    dma_unmap_page(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_map_sg(e1, e2, e3, e4)
+    dma_map_sg(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_sg(e1, e2, e3, e4)
+    dma_unmap_sg(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_single_for_cpu(e1, e2, e3, e4)
+    dma_sync_single_for_cpu(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_single_for_device(e1, e2, e3, e4)
+    dma_sync_single_for_device(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_sg_for_cpu(e1, e2, e3, e4)
+    dma_sync_sg_for_cpu(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_sg_for_device(e1, e2, e3, e4)
+    dma_sync_sg_for_device(&e1->dev, e2, e3, e4)

@@
expression e1, e2;
@@
-    pci_dma_mapping_error(e1, e2)
+    dma_mapping_error(&e1->dev, e2)

@@
expression e1, e2;
@@
-    pci_set_dma_mask(e1, e2)
+    dma_set_mask(&e1->dev, e2)

@@
expression e1, e2;
@@
-    pci_set_consistent_dma_mask(e1, e2)
+    dma_set_coherent_mask(&e1->dev, e2)

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'smc-fixes'
David S. Miller [Thu, 3 Sep 2020 23:52:33 +0000 (16:52 -0700)]
Merge branch 'smc-fixes'

Karsten Graul says:

====================
net/smc: fixes 2020-09-03

Please apply the following patch series for smc to netdev's net tree.

Patch 1 fixes the toleration of older SMC implementations. Patch 2
takes care of a problem that happens when SMCR is used after SMCD
initialization failed. Patch 3 fixes a problem with freed send buffers,
and patch 4 corrects refcounting when SMC terminates due to device
removal.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/smc: fix sock refcounting in case of termination
Ursula Braun [Thu, 3 Sep 2020 19:53:18 +0000 (21:53 +0200)]
net/smc: fix sock refcounting in case of termination

When an ISM device is removed, all its linkgroups are terminated,
i.e. all the corresponding connections are killed.
Connection killing invokes smc_close_active_abort(), which decreases
the sock refcount for certain states to simulate passive closing.
And it cancels the close worker and has to give up the sock lock for
this timeframe. This opens the door for a passive close worker or a
socket close to run in between. In this case smc_close_active_abort() and
passive close worker resp. smc_release() might do a sock_put for passive
closing. This causes:

[ 1323.315943] refcount_t: underflow; use-after-free.
[ 1323.316055] WARNING: CPU: 3 PID: 54469 at lib/refcount.c:28 refcount_warn_saturate+0xe8/0x130
[ 1323.316069] Kernel panic - not syncing: panic_on_warn set ...
[ 1323.316084] CPU: 3 PID: 54469 Comm: uperf Not tainted 5.9.0-20200826.rc2.git0.46328853ed20.300.fc32.s390x+debug #1
[ 1323.316096] Hardware name: IBM 2964 NC9 702 (z/VM 6.4.0)
[ 1323.316108] Call Trace:
[ 1323.316125]  [<00000000c0d4aae8>] show_stack+0x90/0xf8
[ 1323.316143]  [<00000000c15989b0>] dump_stack+0xa8/0xe8
[ 1323.316158]  [<00000000c0d8344e>] panic+0x11e/0x288
[ 1323.316173]  [<00000000c0d83144>] __warn+0xac/0x158
[ 1323.316187]  [<00000000c1597a7a>] report_bug+0xb2/0x130
[ 1323.316201]  [<00000000c0d36424>] monitor_event_exception+0x44/0xc0
[ 1323.316219]  [<00000000c195c716>] pgm_check_handler+0x1da/0x238
[ 1323.316234]  [<00000000c151844c>] refcount_warn_saturate+0xec/0x130
[ 1323.316280] ([<00000000c1518448>] refcount_warn_saturate+0xe8/0x130)
[ 1323.316310]  [<000003ff801f2e2a>] smc_release+0x192/0x1c8 [smc]
[ 1323.316323]  [<00000000c169f1fa>] __sock_release+0x5a/0xe0
[ 1323.316334]  [<00000000c169f2ac>] sock_close+0x2c/0x40
[ 1323.316350]  [<00000000c1086de0>] __fput+0xb8/0x278
[ 1323.316362]  [<00000000c0db1e0e>] task_work_run+0x76/0xb8
[ 1323.316393]  [<00000000c0d8ab84>] do_exit+0x26c/0x520
[ 1323.316408]  [<00000000c0d8af08>] do_group_exit+0x48/0xc0
[ 1323.316421]  [<00000000c0d8afa8>] __s390x_sys_exit_group+0x28/0x38
[ 1323.316433]  [<00000000c195c32c>] system_call+0xe0/0x2b4
[ 1323.316446] 1 lock held by uperf/54469:
[ 1323.316456]  #0: 0000000044125e60 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: __sock_release+0x44/0xe0

The patch rechecks sock state in smc_close_active_abort() after
smc_close_cancel_work() to avoid duplicate decrease of sock
refcount for the same purpose.

Fixes: 611b63a12732 ("net/smc: cancel tx worker in case of socket aborts")
Reviewed-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/smc: reset sndbuf_desc if freed
Ursula Braun [Thu, 3 Sep 2020 19:53:17 +0000 (21:53 +0200)]
net/smc: reset sndbuf_desc if freed

When an SMC connection is created, and there is a problem to
create an RMB or DMB, the previously created send buffer is
thrown away as well including buffer descriptor freeing.
Make sure the connection no longer references the freed
buffer descriptor, otherwise bugs like this are possible:

[71556.835148] =============================================================================
[71556.835168] BUG kmalloc-128 (Tainted: G    B      OE    ): Poison overwritten
[71556.835172] -----------------------------------------------------------------------------

[71556.835179] INFO: 0x00000000d20894be-0x00000000aaef63e9 @offset=2724. First byte 0x0 instead of 0x6b
[71556.835215] INFO: Allocated in __smc_buf_create+0x184/0x578 [smc] age=0 cpu=5 pid=46726
[71556.835234]     ___slab_alloc+0x5a4/0x690
[71556.835239]     __slab_alloc.constprop.0+0x70/0xb0
[71556.835243]     kmem_cache_alloc_trace+0x38e/0x3f8
[71556.835250]     __smc_buf_create+0x184/0x578 [smc]
[71556.835257]     smc_buf_create+0x2e/0xe8 [smc]
[71556.835264]     smc_listen_work+0x516/0x6a0 [smc]
[71556.835275]     process_one_work+0x280/0x478
[71556.835280]     worker_thread+0x66/0x368
[71556.835287]     kthread+0x17a/0x1a0
[71556.835294]     ret_from_fork+0x28/0x2c
[71556.835301] INFO: Freed in smc_buf_create+0xd8/0xe8 [smc] age=0 cpu=5 pid=46726
[71556.835307]     __slab_free+0x246/0x560
[71556.835311]     kfree+0x398/0x3f8
[71556.835318]     smc_buf_create+0xd8/0xe8 [smc]
[71556.835324]     smc_listen_work+0x516/0x6a0 [smc]
[71556.835328]     process_one_work+0x280/0x478
[71556.835332]     worker_thread+0x66/0x368
[71556.835337]     kthread+0x17a/0x1a0
[71556.835344]     ret_from_fork+0x28/0x2c
[71556.835348] INFO: Slab 0x00000000a0744551 objects=51 used=51 fp=0x0000000000000000 flags=0x1ffff00000010200
[71556.835352] INFO: Object 0x00000000563480a1 @offset=2688 fp=0x00000000289567b2

[71556.835359] Redzone 000000006783cde2: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb  ................
[71556.835363] Redzone 00000000e35b876e: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb  ................
[71556.835367] Redzone 0000000023074562: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb  ................
[71556.835372] Redzone 00000000b9564b8c: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb  ................
[71556.835376] Redzone 00000000810c6362: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb  ................
[71556.835380] Redzone 0000000065ef52c3: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb  ................
[71556.835384] Redzone 00000000c5dd6984: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb  ................
[71556.835388] Redzone 000000004c480f8f: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb  ................
[71556.835392] Object 00000000563480a1: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk
[71556.835397] Object 000000009c479d06: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk
[71556.835401] Object 000000006e1dce92: 6b 6b 6b 6b 00 00 00 00 6b 6b 6b 6b 6b 6b 6b 6b  kkkk....kkkkkkkk
[71556.835405] Object 00000000227f7cf8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk
[71556.835410] Object 000000009a701215: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk
[71556.835414] Object 000000003731ce76: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk
[71556.835418] Object 00000000f7085967: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk
[71556.835422] Object 0000000007f99927: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5  kkkkkkkkkkkkkkk.
[71556.835427] Redzone 00000000579c4913: bb bb bb bb bb bb bb bb                          ........
[71556.835431] Padding 00000000305aef82: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[71556.835435] Padding 00000000b1cdd722: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[71556.835438] Padding 00000000c7568199: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[71556.835442] Padding 00000000fad4c4d4: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[71556.835451] CPU: 0 PID: 47939 Comm: kworker/0:15 Tainted: G    B      OE     5.9.0-rc1uschi+ #54
[71556.835456] Hardware name: IBM 3906 M03 703 (LPAR)
[71556.835464] Workqueue: events smc_listen_work [smc]
[71556.835470] Call Trace:
[71556.835478]  [<00000000d5eaeb10>] show_stack+0x90/0xf8
[71556.835493]  [<00000000d66fc0f8>] dump_stack+0xa8/0xe8
[71556.835499]  [<00000000d61a511c>] check_bytes_and_report+0x104/0x130
[71556.835504]  [<00000000d61a57b2>] check_object+0x26a/0x2e0
[71556.835509]  [<00000000d61a59bc>] alloc_debug_processing+0x194/0x238
[71556.835514]  [<00000000d61a8c14>] ___slab_alloc+0x5a4/0x690
[71556.835519]  [<00000000d61a9170>] __slab_alloc.constprop.0+0x70/0xb0
[71556.835524]  [<00000000d61aaf66>] kmem_cache_alloc_trace+0x38e/0x3f8
[71556.835530]  [<000003ff80549bbc>] __smc_buf_create+0x184/0x578 [smc]
[71556.835538]  [<000003ff8054a396>] smc_buf_create+0x2e/0xe8 [smc]
[71556.835545]  [<000003ff80540c16>] smc_listen_work+0x516/0x6a0 [smc]
[71556.835549]  [<00000000d5f0f448>] process_one_work+0x280/0x478
[71556.835554]  [<00000000d5f0f6a6>] worker_thread+0x66/0x368
[71556.835559]  [<00000000d5f18692>] kthread+0x17a/0x1a0
[71556.835563]  [<00000000d6abf3b8>] ret_from_fork+0x28/0x2c
[71556.835569] INFO: lockdep is turned off.
[71556.835573] FIX kmalloc-128: Restoring 0x00000000d20894be-0x00000000aaef63e9=0x6b

[71556.835577] FIX kmalloc-128: Marking all objects used

Fixes: fd7f3a746582 ("net/smc: remove freed buffer from list")
Reviewed-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/smc: set rx_off for SMCR explicitly
Ursula Braun [Thu, 3 Sep 2020 19:53:16 +0000 (21:53 +0200)]
net/smc: set rx_off for SMCR explicitly

SMC tries to make use of SMCD first. If a problem shows up,
it tries to switch to SMCR. If the SMCD initializing problem shows
up after the SMCD connection has already been initialized, field
rx_off keeps the wrong SMCD value for SMCR, which results in corrupted
data at the receiver.
This patch adds an explicit (re-)setting of field rx_off to zero if the
connection uses SMCR.

Fixes: be244f28d22f ("net/smc: add SMC-D support in data transfer")
Reviewed-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/smc: fix toleration of fake add_link messages
Karsten Graul [Thu, 3 Sep 2020 19:53:15 +0000 (21:53 +0200)]
net/smc: fix toleration of fake add_link messages

Older SMCR implementations had no link failover support and used one
link only. Because the handshake protocol requires to try the
establishment of a second link the old code sent a fake add_link message
and declined any server response afterwards.
The current code supports multiple links and inspects the received fake
add_link message more closely. To tolerate the fake add_link messages
smc_llc_is_local_add_link() needs an improved check of the message to
be able to separate between locally enqueued and fake add_link messages.
And smc_llc_cli_add_link() needs to check if the provided qp_mtu size is
invalid and reject the add_link request in that case.

Fixes: c48254fa48e5 ("net/smc: move add link processing for new device into llc layer")
Reviewed-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: dp83867: Fix various styling and space issues
Dan Murphy [Thu, 3 Sep 2020 19:51:12 +0000 (14:51 -0500)]
net: phy: dp83867: Fix various styling and space issues

Fix spacing issues reported for misaligned switch..case and extra new
lines.

Also updated the file header to comply with networking commet style.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoip: expose inet sockopts through inet_diag
Wei Wang [Tue, 1 Sep 2020 22:10:08 +0000 (15:10 -0700)]
ip: expose inet sockopts through inet_diag

Expose all exisiting inet sockopt bits through inet_diag for debug purpose.
Corresponding changes in iproute2 ss will be submitted to output all
these values.

Signed-off-by: Wei Wang <weiwan@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Mahesh Bandewar <maheshb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'net-dsa-bcm_sf2-Clock-support'
David S. Miller [Thu, 3 Sep 2020 22:08:03 +0000 (15:08 -0700)]
Merge branch 'net-dsa-bcm_sf2-Clock-support'

Florian Fainelli says:

====================
net: dsa: bcm_sf2: Clock support

This patch series adds support for controlling the SF2 switch core and
divider clock (where applicable).
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: bcm_sf2: recalculate switch clock rate based on ports
Florian Fainelli [Tue, 1 Sep 2020 22:59:13 +0000 (15:59 -0700)]
net: dsa: bcm_sf2: recalculate switch clock rate based on ports

Whenever a port gets enabled/disabled, recalcultate the required switch
clock rate to make sure it always gets set to the expected rate
targeting our switch use case. This is only done for the BCM7445 switch
as there is no clocking profile available for BCM7278.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: bcm_sf2: request and handle clocks
Florian Fainelli [Tue, 1 Sep 2020 22:59:12 +0000 (15:59 -0700)]
net: dsa: bcm_sf2: request and handle clocks

Fetch the corresponding clock resource and enable/disable it during
suspend/resume if and only if we have no ports defined for Wake-on-LAN.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodt-bindings: net: Document Broadcom SF2 switch clocks
Florian Fainelli [Tue, 1 Sep 2020 22:59:11 +0000 (15:59 -0700)]
dt-bindings: net: Document Broadcom SF2 switch clocks

Describe the two possible clocks feeding into the Broadcom SF2
integrated Ethernet switch. BCM7445 systems have two clocks, one for the
main switch core clock, and another for controlling the switch clock
divider whereas BCM7278 systems only have the first kind.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'net-systemport-Clock-support'
David S. Miller [Thu, 3 Sep 2020 22:06:03 +0000 (15:06 -0700)]
Merge branch 'net-systemport-Clock-support'

Florian Fainelli says:

====================
net: systemport: Clock support

This patch series makes the SYSTEMPORT driver request and manage its
main and Wake-on-LAN clocks appropriately.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: systemport: Manage Wake-on-LAN clock
Florian Fainelli [Tue, 1 Sep 2020 21:43:48 +0000 (14:43 -0700)]
net: systemport: Manage Wake-on-LAN clock

It is necessary to manage the Wake-on-LAN clock to turn on the
appropriate blocks for MPD or CFP-based packet matching to work
otherwise we will not be able to reliably match packets during suspend.

Reported-by: Blair Prescott <blair.prescott@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: systemport: fetch and use clock resources
Florian Fainelli [Tue, 1 Sep 2020 21:43:47 +0000 (14:43 -0700)]
net: systemport: fetch and use clock resources

We disable clocks shortly after probing the device to save as much power as
possible in case the interface is never used. When bcm_sysport_open() is
invoked, clocks are enabled, and disabled in bcm_sysport_stop().

A similar scheme is applied to the suspend/resume functions.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodt-bindings: net: Document Broadcom SYSTEMPORT clocks
Florian Fainelli [Tue, 1 Sep 2020 21:43:46 +0000 (14:43 -0700)]
dt-bindings: net: Document Broadcom SYSTEMPORT clocks

The Broadcom SYSTEMPORT adapters require the use of two clocks for
normal operations and during Wake-on-LAN, document those in the binding
document.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoethtool: fix error handling in ethtool_phys_id
Edward Cree [Tue, 1 Sep 2020 17:52:32 +0000 (18:52 +0100)]
ethtool: fix error handling in ethtool_phys_id

If ops->set_phys_id() returned an error, previously we would only break
 out of the inner loop, which neither stopped the outer loop nor returned
 the error to the user (since 'rc' would be overwritten on the next pass
 through the loop).
Thus, rewrite it to use a single loop, so that the break does the right
 thing.  Use u64 for 'count' and 'i' to prevent overflow in case of
 (unreasonably) large values of id.data and n.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoselftests/net: improve descriptions for XFAIL cases in psock_snd.sh
Po-Hsu Lin [Tue, 1 Sep 2020 15:09:23 +0000 (23:09 +0800)]
selftests/net: improve descriptions for XFAIL cases in psock_snd.sh

Before changing this it's a bit confusing to read test output:
  raw csum_off with bad offset (fails)
  ./psock_snd: write: Invalid argument

Change "fails" in the test case description to "expected to fail", so
that the test output can be more understandable.

Signed-off-by: Po-Hsu Lin <po-hsu.lin@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agochelsio/chtls: CHELSIO_INLINE_CRYPTO should depend on CHELSIO_T4
Geert Uytterhoeven [Tue, 1 Sep 2020 14:58:41 +0000 (16:58 +0200)]
chelsio/chtls: CHELSIO_INLINE_CRYPTO should depend on CHELSIO_T4

While CHELSIO_INLINE_CRYPTO is a guard symbol, and just enabling it does
not cause any additional code to be compiled in, all configuration
options protected by it depend on CONFIG_CHELSIO_T4.  Hence it doesn't
make much sense to bother the user with the guard symbol question when
CONFIG_CHELSIO_T4 is disabled.

Fix this by moving the dependency from the individual config options to
the guard symbol.

Fixes: 44fd1c1fd8219551 ("chelsio/chtls: separate chelsio tls driver from crypto driver")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'Convert-mvpp2-to-split-PCS-support'
David S. Miller [Thu, 3 Sep 2020 21:52:33 +0000 (14:52 -0700)]
Merge branch 'Convert-mvpp2-to-split-PCS-support'

Russell King says:

====================
Convert mvpp2 to split PCS support

This series converts the mvpp2 driver to use the split PCS support
that has been merged into phylink last time around. I've been running
this for some time here and, apart from the recent bug fix sent to
net-next, have not seen any issues on DT based systems. I have not
tested ACPI setups, although I've tried to preserve the workaround.

Patch 1 formalises the ACPI workaround.
Patch 2 moves some of mac_config() to the mac_prepare() and
  mac_finish() callbacks so we can keep the ordering when we split
  the PCS bits out.
Patch 3 ensures that the port is forced down while changing the
  interface mode - when in in-band mode, doing this in mac_prepare()
  and mac_finish().
Patch 4 moves the reset handling to mac_prepare() and mac_finish()
Patch 5 does a straight conversion to use PCS operations.
Patch 6 splits the PCS operations into a GMAC PCS operations and
  XLG PCS operations, selecting the appropriate set during
  mac_prepare().  This eliminates a bunch of conditionals from the
  code.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: split xlg and gmac pcs
Russell King [Tue, 1 Sep 2020 13:48:37 +0000 (14:48 +0100)]
net: mvpp2: split xlg and gmac pcs

Split the XLG and GMAC PCS implementations and switch between them
during the mac_prepare() method.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: convert to phylink pcs operations
Russell King [Tue, 1 Sep 2020 13:48:32 +0000 (14:48 +0100)]
net: mvpp2: convert to phylink pcs operations

Convert mvpp2 to phylink's new pcs support.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: move GMAC reset handling into mac_prepare()/mac_finish()
Russell King [Tue, 1 Sep 2020 13:48:27 +0000 (14:48 +0100)]
net: mvpp2: move GMAC reset handling into mac_prepare()/mac_finish()

Move the GMAC reset handling into mac_prepare() / mac_finish()

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: ensure the port is forced down while changing modes
Russell King [Tue, 1 Sep 2020 13:48:22 +0000 (14:48 +0100)]
net: mvpp2: ensure the port is forced down while changing modes

Ensure that the port is forced down while reconfiguring, controlling
this via mac_prepare() and mac_finish() so that it is down while we
are configuring our (future) PCS.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: convert to use mac_prepare()/mac_finish()
Russell King [Tue, 1 Sep 2020 13:48:17 +0000 (14:48 +0100)]
net: mvpp2: convert to use mac_prepare()/mac_finish()

Convert mvpp2 to use the mac_prepare() and mac_finish() methods in
preparation to converting mvpp2 to split-PCS support.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mvpp2: tidy up ACPI hack
Russell King [Tue, 1 Sep 2020 13:48:12 +0000 (14:48 +0100)]
net: mvpp2: tidy up ACPI hack

Tidy up the ACPI hack so that we can minimise the function prototypes
for this.  This avoids adding further prototypes unnecessarily.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'l2tp-miscellaneous-cleanups'
David S. Miller [Thu, 3 Sep 2020 19:19:04 +0000 (12:19 -0700)]
Merge branch 'l2tp-miscellaneous-cleanups'

Tom Parkin says:

====================
l2tp: miscellaneous cleanups

This series of patches makes the following cleanups and improvements to
the l2tp code:

 * various API tweaks to remove unused parameters from function calls
 * lightly refactor the l2tp transmission path to capture more error
   conditions in the data plane statistics
 * repurpose the "magic feather" validation in l2tp to check for
   sk_user_data (ab)use as opposed to refcount debugging
 * remove some duplicated code
====================

Reviewed-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agol2tp: avoid duplicated code in l2tp_tunnel_closeall
Tom Parkin [Thu, 3 Sep 2020 08:54:52 +0000 (09:54 +0100)]
l2tp: avoid duplicated code in l2tp_tunnel_closeall

l2tp_tunnel_closeall is called as a part of tunnel shutdown in order to
close all the sessions held by the tunnel.  The code it uses to close a
session duplicates what l2tp_session_delete does.

Rather than duplicating the code, have l2tp_tunnel_closeall call
l2tp_session_delete instead.

This involves a very minor change to locking in l2tp_tunnel_closeall.
Previously, l2tp_tunnel_closeall checked the session "dead" flag while
holding tunnel->hlist_lock.  This allowed for the code to step to the
next session in the list without releasing the lock if the current
session happened to be in the process of closing already.

By calling l2tp_session_delete instead, l2tp_tunnel_closeall must now
drop and regain the hlist lock for each session in the tunnel list.
Given that the likelihood of a session being in the process of closing
when the tunnel is closed, it seems worth this very minor potential
loss of efficiency to avoid duplication of the session delete code.

Signed-off-by: Tom Parkin <tparkin@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agol2tp: make magic feather checks more useful
Tom Parkin [Thu, 3 Sep 2020 08:54:51 +0000 (09:54 +0100)]
l2tp: make magic feather checks more useful

The l2tp tunnel and session structures contain a "magic feather" field
which was originally intended to help trace lifetime bugs in the code.

Since the introduction of the shared kernel refcount code in refcount.h,
and l2tp's porting to those APIs, we are covered by the refcount code's
checks and warnings.  Duplicating those checks in the l2tp code isn't
useful.

However, magic feather checks are still useful to help to detect bugs
stemming from misuse/trampling of the sk_user_data pointer in struct
sock.  The l2tp code makes extensive use of sk_user_data to stash
pointers to the tunnel and session structures, and if another subsystem
overwrites sk_user_data it's important to detect this.

As such, rework l2tp's magic feather checks to focus on validating the
tunnel and session data structures when they're extracted from
sk_user_data.

 * Add a new accessor function l2tp_sk_to_tunnel which contains a magic
   feather check, and is used by l2tp_core and l2tp_ip[6]
 * Comment l2tp_udp_encap_recv which doesn't use this new accessor function
   because of the specific nature of the codepath it is called in
 * Drop l2tp_session_queue_purge's check on the session magic feather:
   it is called from code which is walking the tunnel session list, and
   hence doesn't need validation
 * Drop l2tp_session_free's check on the tunnel magic feather: the
   intention of this check is covered by refcount.h's reference count
   sanity checking
 * Add session magic validation in pppol2tp_ioctl.  On failure return
   -EBADF, which mirrors the approach in pppol2tp_[sg]etsockopt.

Signed-off-by: Tom Parkin <tparkin@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agol2tp: capture more tx errors in data plane stats
Tom Parkin [Thu, 3 Sep 2020 08:54:50 +0000 (09:54 +0100)]
l2tp: capture more tx errors in data plane stats

l2tp_xmit_skb has a number of failure paths which are not reflected in
the tunnel and session statistics because the stats are updated by
l2tp_xmit_core.  Hence any errors occurring before l2tp_xmit_core is
called are missed from the statistics.

Refactor the transmit path slightly to capture all error paths.

l2tp_xmit_skb now leaves all the actual work of transmission to
l2tp_xmit_core, and updates the statistics based on l2tp_xmit_core's
return code.

Signed-off-by: Tom Parkin <tparkin@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agol2tp: drop net argument from l2tp_tunnel_create
Tom Parkin [Thu, 3 Sep 2020 08:54:49 +0000 (09:54 +0100)]
l2tp: drop net argument from l2tp_tunnel_create

The argument is unused, so remove it.

Signed-off-by: Tom Parkin <tparkin@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agol2tp: drop data_len argument from l2tp_xmit_core
Tom Parkin [Thu, 3 Sep 2020 08:54:48 +0000 (09:54 +0100)]
l2tp: drop data_len argument from l2tp_xmit_core

The data_len argument passed to l2tp_xmit_core is no longer used, so
remove it.

Signed-off-by: Tom Parkin <tparkin@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agol2tp: remove header length param from l2tp_xmit_skb
Tom Parkin [Thu, 3 Sep 2020 08:54:47 +0000 (09:54 +0100)]
l2tp: remove header length param from l2tp_xmit_skb

All callers pass the session structure's hdr_len field as the header
length parameter to l2tp_xmit_skb.

Since we're passing a pointer to the session structure to l2tp_xmit_skb
anyway, there's not much point breaking the header length out as a
separate argument.

Signed-off-by: Tom Parkin <tparkin@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agotg3: Fix soft lockup when tg3_reset_task() fails.
Michael Chan [Thu, 3 Sep 2020 18:28:54 +0000 (14:28 -0400)]
tg3: Fix soft lockup when tg3_reset_task() fails.

If tg3_reset_task() fails, the device state is left in an inconsistent
state with IFF_RUNNING still set but NAPI state not enabled.  A
subsequent operation, such as ifdown or AER error can cause it to
soft lock up when it tries to disable NAPI state.

Fix it by bringing down the device to !IFF_RUNNING state when
tg3_reset_task() fails.  tg3_reset_task() running from workqueue
will now call tg3_close() when the reset fails.  We need to
modify tg3_reset_task_cancel() slightly to avoid tg3_close()
calling cancel_work_sync() to cancel tg3_reset_task().  Otherwise
cancel_work_sync() will wait forever for tg3_reset_task() to
finish.

Reported-by: David Christensen <drc@linux.vnet.ibm.com>
Reported-by: Baptiste Covolato <baptiste@arista.com>
Fixes: db2199737990 ("tg3: Schedule at most one tg3_reset_task run")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'mlxsw-Expose-critical-and-emergency-module-alarms'
David S. Miller [Thu, 3 Sep 2020 19:12:05 +0000 (12:12 -0700)]
Merge branch 'mlxsw-Expose-critical-and-emergency-module-alarms'

Ido Schimmel says:

====================
mlxsw: Expose critical and emergency module alarms

Amit says:

Extend hwmon interface with critical and emergency module alarms.

In case that current module temperature is higher than emergency
threshold, EMERGENCY alarm will be reported in sensors utility:

$ sensors
...
front panel 025:  +55.0°C  (crit = +35.0°C, emerg = +40.0°C) ALARM(EMERGENCY)

In case that current module temperature is higher than critical
threshold, CRIT alarm will be reported in sensors utility:

$ sensors
...
front panel 025:  +54.0°C  (crit = +35.0°C, emerg = +80.0°C) ALARM(CRIT)

Patch set overview:

Patches #1-#2 make several changes to make the code easier to change.

Patch #3 extends the hwmon interface with the new module alarms.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agomlxsw: core_hwmon: Extend hwmon interface with critical and emergency alarms
Amit Cohen [Thu, 3 Sep 2020 13:41:46 +0000 (16:41 +0300)]
mlxsw: core_hwmon: Extend hwmon interface with critical and emergency alarms

Add new attributes to hwmon object for exposing critical and emergency
alarms.

In case that current temperature is higher than emergency threshold,
EMERGENCY alarm will be reported in sensors utility:

$ sensors
...
front panel 025:  +55.0°C  (crit = +35.0°C, emerg = +40.0°C) ALARM(EMERGENCY)

In case that current temperature is higher than critical threshold,
CRIT alarm will be reported in sensors utility:

$ sensors
...
front panel 025:  +54.0°C  (crit = +35.0°C, emerg = +80.0°C) ALARM(CRIT)

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Acked-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agomlxsw: core_hwmon: Calculate MLXSW_HWMON_ATTR_COUNT more accurately
Amit Cohen [Thu, 3 Sep 2020 13:41:45 +0000 (16:41 +0300)]
mlxsw: core_hwmon: Calculate MLXSW_HWMON_ATTR_COUNT more accurately

Currently the value of MLXSW_HWMON_ATTR_COUNT is calculated not really
accurate.

Add several defines to make the calculation clearer and easier to
change.

Calculate the precise high bound of number of attributes that may be
needed.

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agomlxsw: core_hwmon: Split temperature querying from show functions
Amit Cohen [Thu, 3 Sep 2020 13:41:44 +0000 (16:41 +0300)]
mlxsw: core_hwmon: Split temperature querying from show functions

mlxsw_hwmon_module_temp_show(), mlxsw_hwmon_module_temp_critical_show()
and mlxsw_hwmon_module_temp_emergency_show() query the relevant
temperature from firmware and fill the value in provided buffers.

Split the temperature querying functionality to individual get()
functions and call them from the show() functions.

The get() functions will be used by subsequent patches in the set.

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'Minor-improvements-to-b53-dmesg-output'
David S. Miller [Thu, 3 Sep 2020 19:07:29 +0000 (12:07 -0700)]
Merge branch 'Minor-improvements-to-b53-dmesg-output'

Paul Barker says:

====================
Minor improvements to b53 dmesg output

These changes were made while debugging the b53 driver for use on a
custom board. They've been runtime tested on a patched 4.14.y kernel
which supports this board as well as build tested with 5.9-rc3. The
changes are straightforward enough that I think this testing is
sufficient but let me know if further testing is required.

Unfortunately I don't have a board to hand which boots with a more
recent kernel and has a switch supported by the b53 driver. I'd still
like to upstream these patches if possible though.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: b53: Print err message on SW_RST timeout
Paul Barker [Thu, 3 Sep 2020 11:26:21 +0000 (12:26 +0100)]
net: dsa: b53: Print err message on SW_RST timeout

This allows us to differentiate between the possible failure modes of
b53_switch_reset() by looking at the dmesg output.

Signed-off-by: Paul Barker <pbarker@konsulko.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: b53: Use dev_{err,info} instead of pr_*
Paul Barker [Thu, 3 Sep 2020 11:26:20 +0000 (12:26 +0100)]
net: dsa: b53: Use dev_{err,info} instead of pr_*

This change allows us to see which device the err or info messages are
referring to if we have multiple b53 compatible devices on a board.

As this removes the only pr_*() calls in this file we can drop the
definition of pr_fmt().

Signed-off-by: Paul Barker <pbarker@konsulko.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoperf tools: Add bpf image check to __map__is_kmodule
Jiri Olsa [Wed, 26 Aug 2020 21:30:17 +0000 (23:30 +0200)]
perf tools: Add bpf image check to __map__is_kmodule

When validating kcore modules the do_validate_kcore_modules function
checks on every kernel module dso against modules record. The
__map__is_kmodule check is used to get only kernel module dso objects
through.

Currently the bpf images are slipping through the check and making the
validation to fail, so report falls back from kcore usage to kallsyms.

Adding __map__is_bpf_image check for bpf image and adding it to
__map__is_kmodule check.

Fixes: 3c29d4483e85 ("perf annotate: Add basic support for bpf_image")
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20200826213017.818788-1-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf record/stat: Explicitly call out event modifiers in the documentation
Kim Phillips [Tue, 1 Sep 2020 21:58:53 +0000 (16:58 -0500)]
perf record/stat: Explicitly call out event modifiers in the documentation

Event modifiers are not mentioned in the perf record or perf stat
manpages.  Add them to orient new users more effectively by pointing
them to the perf list manpage for details.

Fixes: 2055fdaf8703 ("perf list: Document precise event sampling for AMD IBS")
Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Clarke <pc@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tony Jones <tonyj@suse.de>
Cc: stable@vger.kernel.org
Link: http://lore.kernel.org/lkml/20200901215853.276234-1-kim.phillips@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf bench: The do_run_multi_threaded() function must use IS_ERR(perf_session__new())
YueHaibing [Wed, 2 Sep 2020 14:05:26 +0000 (22:05 +0800)]
perf bench: The do_run_multi_threaded() function must use IS_ERR(perf_session__new())

In case of error, the function perf_session__new() returns ERR_PTR() and
never returns NULL. The NULL test in the return value check should be
replaced with IS_ERR()

Committer notes:

This wasn't compiling due to an extraneous '{' not matched by a '}', fix
it.

Fixes: 13edc237200c ("perf bench: Add a multi-threaded synthesize benchmark")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200902140526.26916-1-yuehaibing@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf stat: Turn off summary for interval mode by default
Jin Yao [Thu, 3 Sep 2020 01:01:13 +0000 (09:01 +0800)]
perf stat: Turn off summary for interval mode by default

There's a risk that outputting interval mode summaries by default breaks
CSV consumers. It already broke pmu-tools/toplev.

So now we turn off the summary by default but we create a new option
'--summary' to enable the summary. This is active even when not using
CSV mode.

Before:

  root@kbl-ppc:~# perf stat -I1000 --interval-count 2
  #           time             counts unit events
       1.000265904           8,005.73 msec cpu-clock                 #    8.006 CPUs utilized
       1.000265904                601      context-switches          #    0.075 K/sec
       1.000265904                 10      cpu-migrations            #    0.001 K/sec
       1.000265904                  0      page-faults               #    0.000 K/sec
       1.000265904         66,746,521      cycles                    #    0.008 GHz
       1.000265904         71,874,398      instructions              #    1.08  insn per cycle
       1.000265904         13,356,781      branches                  #    1.668 M/sec
       1.000265904            298,756      branch-misses             #    2.24% of all branches
       2.001857667           8,012.52 msec cpu-clock                 #    8.013 CPUs utilized
       2.001857667                164      context-switches          #    0.020 K/sec
       2.001857667                 10      cpu-migrations            #    0.001 K/sec
       2.001857667                  2      page-faults               #    0.000 K/sec
       2.001857667          5,822,188      cycles                    #    0.001 GHz
       2.001857667          2,186,170      instructions              #    0.38  insn per cycle
       2.001857667            442,378      branches                  #    0.055 M/sec
       2.001857667             44,750      branch-misses             #   10.12% of all branches

   Performance counter stats for 'system wide':

           16,018.25 msec cpu-clock                 #    7.993 CPUs utilized
                 765      context-switches          #    0.048 K/sec
                  20      cpu-migrations            #    0.001 K/sec
                   2      page-faults               #    0.000 K/sec
          72,568,709      cycles                    #    0.005 GHz
          74,060,568      instructions              #    1.02  insn per cycle
          13,799,159      branches                  #    0.861 M/sec
             343,506      branch-misses             #    2.49% of all branches

         2.004118489 seconds time elapsed

After:

  root@kbl-ppc:~# perf stat -I1000 --interval-count 2
  #           time             counts unit events
       1.001336393           8,013.28 msec cpu-clock                 #    8.013 CPUs utilized
       1.001336393                 82      context-switches          #    0.010 K/sec
       1.001336393                  8      cpu-migrations            #    0.001 K/sec
       1.001336393                  0      page-faults               #    0.000 K/sec
       1.001336393          4,199,121      cycles                    #    0.001 GHz
       1.001336393          1,373,991      instructions              #    0.33  insn per cycle
       1.001336393            270,681      branches                  #    0.034 M/sec
       1.001336393             31,659      branch-misses             #   11.70% of all branches
       2.003905006           8,020.52 msec cpu-clock                 #    8.021 CPUs utilized
       2.003905006                184      context-switches          #    0.023 K/sec
       2.003905006                  8      cpu-migrations            #    0.001 K/sec
       2.003905006                  2      page-faults               #    0.000 K/sec
       2.003905006          5,446,190      cycles                    #    0.001 GHz
       2.003905006          2,312,547      instructions              #    0.42  insn per cycle
       2.003905006            451,691      branches                  #    0.056 M/sec
       2.003905006             37,925      branch-misses             #    8.40% of all branches

  root@kbl-ppc:~# perf stat -I1000 --interval-count 2 --summary
  #           time             counts unit events
       1.001313128           8,013.20 msec cpu-clock                 #    8.013 CPUs utilized
       1.001313128                 83      context-switches          #    0.010 K/sec
       1.001313128                  8      cpu-migrations            #    0.001 K/sec
       1.001313128                  0      page-faults               #    0.000 K/sec
       1.001313128          4,470,950      cycles                    #    0.001 GHz
       1.001313128          1,440,045      instructions              #    0.32  insn per cycle
       1.001313128            283,222      branches                  #    0.035 M/sec
       1.001313128             33,576      branch-misses             #   11.86% of all branches
       2.003857385           8,020.34 msec cpu-clock                 #    8.020 CPUs utilized
       2.003857385                154      context-switches          #    0.019 K/sec
       2.003857385                  8      cpu-migrations            #    0.001 K/sec
       2.003857385                  2      page-faults               #    0.000 K/sec
       2.003857385          4,515,676      cycles                    #    0.001 GHz
       2.003857385          2,180,449      instructions              #    0.48  insn per cycle
       2.003857385            435,254      branches                  #    0.054 M/sec
       2.003857385             31,179      branch-misses             #    7.16% of all branches

   Performance counter stats for 'system wide':

           16,033.53 msec cpu-clock                 #    7.992 CPUs utilized
                 237      context-switches          #    0.015 K/sec
                  16      cpu-migrations            #    0.001 K/sec
                   2      page-faults               #    0.000 K/sec
           8,986,626      cycles                    #    0.001 GHz
           3,620,494      instructions              #    0.40  insn per cycle
             718,476      branches                  #    0.045 M/sec
              64,755      branch-misses             #    9.01% of all branches

         2.006124542 seconds time elapsed

Fixes: c7e5b328a8d4 ("perf stat: Report summary for interval mode")
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200903010113.32232-1-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agolibtraceevent: Fix build warning on 32-bit arches
Tzvetomir Stoyanov (VMware) [Wed, 2 Sep 2020 10:31:21 +0000 (13:31 +0300)]
libtraceevent: Fix build warning on 32-bit arches

Fixed a compilation warning for casting to pointer from integer of
different size on 32-bit platforms.

Reported-by: Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: linux-trace-devel@vger.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf jevents: Fix suspicious code in fixregex()
Namhyung Kim [Thu, 3 Sep 2020 15:25:10 +0000 (00:25 +0900)]
perf jevents: Fix suspicious code in fixregex()

The new string should have enough space for the original string and the
back slashes IMHO.

Fixes: fbc2844e84038ce3 ("perf vendor events: Use more flexible pattern matching for CPU identification for mapfile.csv")
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Reviewed-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: William Cohen <wcohen@redhat.com>
Link: http://lore.kernel.org/lkml/20200903152510.489233-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf parse-events: Use uintptr_t when casting numbers to pointers
Arnaldo Carvalho de Melo [Thu, 3 Sep 2020 18:34:20 +0000 (15:34 -0300)]
perf parse-events: Use uintptr_t when casting numbers to pointers

To address these errors found when cross building from x86_64 to MIPS
little endian 32-bit:

    CC       /tmp/build/perf/util/parse-events-bison.o
  util/parse-events.y: In function 'parse_events_parse':
  util/parse-events.y:514:6: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
    514 |      (void *) $2, $6, $4);
        |      ^
  util/parse-events.y:531:7: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
    531 |       (void *) $2, NULL, $4)) {
        |       ^
  util/parse-events.y:547:6: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
    547 |      (void *) $2, $4, 0);
        |      ^
  util/parse-events.y:564:7: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
    564 |       (void *) $2, NULL, 0)) {
        |       ^

Fixes: cabbf26821aa210f ("perf parse: Before yyabort-ing free components")
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Ian Rogers <irogers@google.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Yonghong Song <yhs@fb.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agodoc: net: dsa: Fix typo in config code sample
Paul Barker [Thu, 3 Sep 2020 08:49:25 +0000 (09:49 +0100)]
doc: net: dsa: Fix typo in config code sample

In the "single port" example code for configuring a DSA switch without
tagging support from userspace the command to bring up the "lan2" link
was typo'd.

Signed-off-by: Paul Barker <pbarker@konsulko.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge tag 'fixes-2020-09-03' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt...
Linus Torvalds [Thu, 3 Sep 2020 17:05:48 +0000 (10:05 -0700)]
Merge tag 'fixes-2020-09-03' of git://git./linux/kernel/git/rppt/memblock

Pull misc build failure fixes from Mike Rapoport:
 "Fix min_low_pfn/max_low_pfn build errors on ia64 and microblaze.

  Some configurations of ia64 and microblaze use min_low_pfn and
  max_low_pfn in pfn_valid(). This causes build failures for modules
  that use pfn_valid().

  The fix is to add EXPORT_SYMBOL() for these variables on ia64 and
  microblaze"

* tag 'fixes-2020-09-03' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
  ia64: fix min_low_pfn/max_low_pfn build errors
  microblaze: fix min_low_pfn/max_low_pfn build errors

3 years agoMerge tag 'affs-for-5.9-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave...
Linus Torvalds [Thu, 3 Sep 2020 15:41:36 +0000 (08:41 -0700)]
Merge tag 'affs-for-5.9-tag' of git://git./linux/kernel/git/kdave/linux

Pull affs fix from David Sterba:
 "One fix to make permissions work the same way as on AmigaOS"

* tag 'affs-for-5.9-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  affs: fix basic permission bits to actually work

3 years agoMerge tag 'media/v5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
Linus Torvalds [Thu, 3 Sep 2020 15:22:16 +0000 (08:22 -0700)]
Merge tag 'media/v5.9-2' of git://git./linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab:

 - a compilation fix issue with ti-vpe on arm 32 bits

 - two Kconfig fixes for imx214 and max9286 drivers

 - a kernel information leak at v4l2-core on time32 compat ioctls

 - some fixes at rc core unbind logic

 - a fix at mceusb driver for it to not use GFP_ATOMIC

 - fixes at cedrus and vicodec drivers at the control handling logic

 - a fix at gpio-ir-tx to avoid disabling interruts on a spinlock

* tag 'media/v5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  media: mceusb: Avoid GFP_ATOMIC where it is not needed
  media: gpio-ir-tx: spinlock is not needed to disable interrupts
  media: rc: do not access device via sysfs after rc_unregister_device()
  media: rc: uevent sysfs file races with rc_unregister_device()
  media: max9286: Depend on OF_GPIO
  media: i2c: imx214: select V4L2_FWNODE
  media: cedrus: Add missing v4l2_ctrl_request_hdl_put()
  media: vicodec: add missing v4l2_ctrl_request_hdl_put()
  media: media/v4l2-core: Fix kernel-infoleak in video_put_user()
  media: ti-vpe: cal: Fix compilation on 32-bit ARM

3 years agoALSA: hda/realtek - Improved routing for Thinkpad X1 7th/8th Gen
Takashi Iwai [Thu, 3 Sep 2020 08:33:00 +0000 (10:33 +0200)]
ALSA: hda/realtek - Improved routing for Thinkpad X1 7th/8th Gen

There've been quite a few regression reports about the lowered volume
(reduced to ca 65% from the previous level) on Lenovo Thinkpad X1
after the commit d2cd795c4ece ("ALSA: hda - fixup for the bass speaker
on Lenovo Carbon X1 7th gen").  Although the commit itself does the
right thing from HD-audio POV in order to have a volume control for
bass speakers, it seems that the machine has some secret recipe under
the hood.

Through experiments, Benjamin Poirier found out that the following
routing gives the best result:
* DAC1 (NID 0x02) -> Speaker pin (NID 0x14)
* DAC2 (NID 0x03) -> Shared by both Bass Speaker pin (NID 0x17) &
                     Headphone pin (0x21)
* DAC3 (NID 0x06) -> Unused

DAC1 seems to have some equalizer internally applied, and you'd get
again the output in a bad quality if you connect this to the
headphone pin.  Hence the headphone is connected to DAC2, which is now
shared with the bass speaker pin.  DAC3 has no volume amp, hence it's
not connected at all.

For achieving the routing above, this patch introduced a couple of
workarounds:

* The connection list of bass speaker pin (NID 0x17) is reduced not to
  include DAC3 (NID 0x06)
* Pass preferred_pairs array to specify the fixed connection

Here, both workarounds are needed because the generic parser prefers
the individual DAC assignment over others.

When the routing above is applied, the generic parser creates the two
volume controls "Front" and "Bass Speaker".  Since we have only two
DACs for three output pins, those are not fully controlling each
output individually, and it would confuse PulseAudio.  For avoiding
the pitfall, in this patch, we rename those volume controls to some
unique ones ("DAC1" and "DAC2").  Then PulseAudio ignore them and
concentrate only on the still good-working "Master" volume control.
If a user still wants to control each DAC volume, they can still
change manually via "DAC1" and "DAC2" volume controls.

Fixes: d2cd795c4ece ("ALSA: hda - fixup for the bass speaker on Lenovo Carbon X1 7th gen")
Reported-by: Benjamin Poirier <benjamin.poirier@gmail.com>
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Tested-by: Benjamin Poirier <benjamin.poirier@gmail.com>
Cc: <stable@vger.kernel.org>
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=207407#c10
BugLink: https://gist.github.com/hamidzr/dd81e429dc86f4327ded7a2030e7d7d9#gistcomment-3214171
BugLink: https://gist.github.com/hamidzr/dd81e429dc86f4327ded7a2030e7d7d9#gistcomment-3276276
Link: https://lore/kernel.org/r/20200829112746.3118-1-benjamin.poirier@gmail.com
Link: https://lore.kernel.org/r/20200903083300.6333-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
3 years agoMIPS: SNI: Fix SCSI interrupt
Thomas Bogendoerfer [Wed, 2 Sep 2020 21:32:14 +0000 (23:32 +0200)]
MIPS: SNI: Fix SCSI interrupt

On RM400(a20r) machines ISA and SCSI interrupts share the same interrupt
line. Commit 49e6e07e3c80 ("MIPS: pass non-NULL dev_id on shared
request_irq()") accidently dropped the IRQF_SHARED bit, which breaks
registering SCSI interrupt. Put back IRQF_SHARED and add dev_id for
ISA interrupt.

Fixes: 49e6e07e3c80 ("MIPS: pass non-NULL dev_id on shared request_irq()")
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
3 years agoMIPS: add missing MSACSR and upper MSA initialization
Huang Pei [Tue, 1 Sep 2020 06:53:09 +0000 (14:53 +0800)]
MIPS: add missing MSACSR and upper MSA initialization

In cc97ab235f3f ("MIPS: Simplify FP context initialization), init_fp_ctx
just initialize the fp/msa context, and own_fp_inatomic just restore
FCSR and 64bit FP regs from it, but miss MSACSR and upper MSA regs for
MSA, so MSACSR and MSA upper regs's value from previous task on current
cpu can leak into current task and cause unpredictable behavior when MSA
context not initialized.

Fixes: cc97ab235f3f ("MIPS: Simplify FP context initialization")
Signed-off-by: Huang Pei <huangpei@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
3 years agodmaengine: ti: k3-udma: Update rchan_oes_offset for am654 SYSFW ABI 3.0
Peter Ujfalusi [Mon, 31 Aug 2020 09:10:19 +0000 (12:10 +0300)]
dmaengine: ti: k3-udma: Update rchan_oes_offset for am654 SYSFW ABI 3.0

SYSFW ABI 3.0 has changed the rchan_oes_offset value for am654 to support
SR2.

Since the kernel now needs SYSFW API 3.0 to work because the merged irqchip
update, we need to also update the am654 rchan_oes_offset.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20200831091019.25273-1-peter.ujfalusi@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
3 years agodrm/nouveau/kms/nv50-gp1xx: add WAR for EVO push buffer HW bug
Ben Skeggs [Wed, 2 Sep 2020 05:30:33 +0000 (15:30 +1000)]
drm/nouveau/kms/nv50-gp1xx: add WAR for EVO push buffer HW bug

Thanks to NVIDIA for confirming this workaround, and clarifying which HW
is affected.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Tested-by: Alexander Kapshuk <alexander.kapshuk@gmail.com>
3 years agodrm/nouveau/kms/nv50-gp1xx: disable notifies again after core update
Ben Skeggs [Tue, 11 Aug 2020 00:11:38 +0000 (10:11 +1000)]
drm/nouveau/kms/nv50-gp1xx: disable notifies again after core update

This was lost during the header conversion.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>