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Maxime Bizon [Sat, 30 Jan 2010 17:34:56 +0000 (18:34 +0100)]
MIPS: BCM63xx: Fix typo in cpu-feature-overrides file.
Fix typo: CONFIG_BCMCPU_IS_63xx does not exist;
CONFIG_BCM63XX_CPU_63xx is the valid config option.
Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
To: linux-mips@linux-mips.org
Cc: Maxime Bizon <mbizon@freebox.fr>
Patchwork: http://patchwork.linux-mips.org/patch/901/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Maxime Bizon [Sat, 30 Jan 2010 17:34:55 +0000 (18:34 +0100)]
MIPS: BCM63xx: Add support for second uart.
The BCm63xx SOC has two uarts. Some boards use the second one for
bluetooth. This patch changes platform device registration code to
handle this. Changes to the UART driver were already merged in
6a2c7eabfd09ca7986bf96b8958a87ca041a19d8.
Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
To: linux-mips@linux-mips.org
Cc: Maxime Bizon <mbizon@freebox.fr>
Patchwork: http://patchwork.linux-mips.org/patch/900/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Maxime Bizon [Sat, 30 Jan 2010 17:34:54 +0000 (18:34 +0100)]
MIPS: BCM63xx: Fix double gpio registration.
bcm63xx_gpio_init is already called from prom_init to allow board to use
them early, so we can remove the unneeded arch_initcall.
Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
To: linux-mips@linux-mips.org
Cc: Maxime Bizon <mbizon@freebox.fr>
Patchwork: http://patchwork.linux-mips.org/patch/899/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Florian Fainelli [Mon, 1 Mar 2010 22:36:27 +0000 (23:36 +0100)]
MIPS: BCM63xx: Add DWVS0 board
The DWVS0 board is a BCM6358-based board with an on-board OHCI controler.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1015/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Florian Fainelli [Mon, 1 Mar 2010 22:36:22 +0000 (23:36 +0100)]
MIPS: BCM63xx: Add the RTA1025W-16 BCM6348-based board to suppported boards.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1014/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Florian Fainelli [Mon, 1 Mar 2010 22:36:32 +0000 (23:36 +0100)]
MIPS: BCM63xx: Fix BCM6338 and BCM6345 gpio count
The number of GPIOs on BCM6338 is 8, while BCM6345 has only 16 GPIOs
available.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1016/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Andrea Gelmini [Sat, 27 Feb 2010 16:51:23 +0000 (17:51 +0100)]
MIPS: libgcc.h: Checkpatch cleanup
arch/mips/lib/libgcc.h:21: ERROR: open brace '{' following union go on the same line
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
To: linux-kernel@vger.kernel.org
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: linux-mips@linux-mips.org
Cc: linux-sh@vger.kernel.org
Patchwork: http://patchwork.linux-mips.org/patch/1007/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Wu Zhangjin [Sat, 13 Mar 2010 04:34:15 +0000 (12:34 +0800)]
MIPS: Loongson-2F: Flush the branch target history in BTB and RAS
As per chapter 15 "Errata: Issue of Out-of-order in loongson"[1] to work
around the Loongson 2F erratum we need to do:
"When switching from user mode to kernel mode, you should flush the
branch target history such as BTB and RAS."
[1] Chinese version: http://www.loongson.cn/uploadfile/file/
200808211
[2] English version of chapter 15:
http://groups.google.com.hk/group/loongson-dev/msg/
e0d2e220958f10a6?dmode=source
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Shinya Kuribayashi <shinya.kuribayashi@necel.com>
Patchwork: http://patchwork.linux-mips.org/patch/1066/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Fri, 19 Feb 2010 00:13:05 +0000 (16:13 -0800)]
MIPS: Move signal trampolines off of the stack.
This is a follow on to the vdso patch.
Since all processes now have signal trampolines permanently mapped, we
can use those instead of putting the trampoline on the stack and
invalidating the corresponding icache across all CPUs. We also get rid
of a bunch of ICACHE_REFILLS_WORKAROUND_WAR code.
[Ralf: GDB 7.1 which has the necessary modifications to allow backtracing
over signal frames will supposedly be released tomorrow. The old signal
frame format obsoleted by this patch exists in two variations, for sane
processors and for those requiring ICACHE_REFILLS_WORKAROUND_WAR. So
there was never a GDB which did support backtracing over signal frames
on all MIPS systems. This convinved me this series should be applied and
pushed upstream as soon as possible.]
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/974/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Fri, 19 Feb 2010 00:13:04 +0000 (16:13 -0800)]
MIPS: Preliminary VDSO
This is a preliminary patch to add a vdso to all user processes. Still
missing are ELF headers and .eh_frame information. But it is enough to
allow us to move signal trampolines off of the stack. Note that emulation
of branch delay slots in the FPU emulator still requires the stack.
We allocate a single page (the vdso) and write all possible signal
trampolines into it. The stack is moved down by one page and the vdso is
mapped into this space.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/975/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Fri, 19 Feb 2010 00:13:03 +0000 (16:13 -0800)]
MIPS: Add SYSCALL to uasm.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/976/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Andreas Ferber [Tue, 16 Mar 2010 11:35:51 +0000 (12:35 +0100)]
MIPS: Fix SSB PCIcore IO resource management
The SSB PCIcore code reused the IO resource fixup code from the original
2.4.x Broadcom patch for BCM47xx based devices, which was a quick hack
for doing PCI IO resource configuration back then (the boot loader
doesn't configure PCI devices on this platform).
However, this code is no longer necessary since the kernel now can do
PCI resource management fine all by itself, so remove the old code.
When removing the code, it becomes obvious that the mem_offset setting
in the PCIcore driver was wrong, however this was masked by the fixup
code before, except in a few cases involving yenta_socket. For BCM47xx,
the correct offset is 0, and since this is the only device using PCIcore
in host mode, the offset can simply be removed unconditionally.
Signed-off-by: Andreas Ferber <af@chaos-agency.de>
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Cc: Markus Wigge <markus@cultcom.de>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1070/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Florian Fainelli [Wed, 10 Mar 2010 08:51:09 +0000 (09:51 +0100)]
MIPS: make CAC_ADDR and UNCAC_ADDR account for PHYS_OFFSET
On AR7, we already redefine PHYS_OFFSET to match the system specifities, it
is however not sufficient when unsing dma_{map,unmap}_single, specifically
in the ethernet driver, we must also adjust CAC_ADDR and UNCAC_ADDR for DMA
to work correctly. This patch fixes the following issue, seen in cpmac_open:
ops[#1]:
Cpu 0
$ 0 :
00000000 10008400 a0f5b120 00000000
$ 4 :
94c59000 94270f64 00000020 00000010
$ 8 :
00000010 94103ce0 0000000a 94c03400
$12 :
ffffffff 94c03408 94c03410 00000001
$16 :
a0f5ba20 00000041 94c592c0 94c59200
$20 :
94c59000 000005ee 00002000 9438c8f0
$24 :
00000010 00000000
$28 :
94fac000 94fadd58 94390000 942724a8
Hi :
00000000
Lo :
00000001
epc :
94272518 cpmac_open+0x208/0x3f8
Not tainted
ra :
942724a8 cpmac_open+0x198/0x3f8
Status:
10008403 KERNEL EXL IE
Cause :
3080000c
BadVA :
00000000
PrId :
00018448 (MIPS 4KEc)
Modules linked in:
Process ifconfig (pid: 278, threadinfo=
94fac000, task=
94e79590, tls=
00000000)
Stack :
7f8da120 2ab05cb0 94c59000 943356f0 00000000 943d0000 94c59000 943356f0
94c59030 943d0000 943c27c0 94fade10 00000000 94fade20 94c59000 9428e5a4
00000000 94c59000 00000041 94289768 94c59000 00000041 00001002 00001043
00000000 9428d810 00000000 94fade10 7f8da4e8 9428e6b8 00000000 7f8da4a8
7f8da4e8 00008914 00000000 942f7f2c 00000000 00000008 00408000 00008913
...
Call Trace:
[<
94272518>] cpmac_open+0x208/0x3f8
[<
9428e5a4>] dev_open+0x164/0x264
[<
9428d810>] dev_change_flags+0xd0/0x1bc
[<
942f7f2c>] devinet_ioctl+0x2d8/0x908
[<
942771f8>] sock_ioctl+0x29c/0x2fc
[<
941a0fb4>] vfs_ioctl+0x2c/0x7c
[<
941a16ec>] do_vfs_ioctl+0x5dc/0x630
[<
941a1790>] sys_ioctl+0x50/0x88
[<
94101e10>] stack_done+0x20/0x3c
Signed-off-by: peter fuerst <post@pfrst.de>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1050/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Alexander Clouter [Sat, 13 Mar 2010 00:09:15 +0000 (00:09 +0000)]
MIPS: AR7: Fix phat finger of cpmac fixed_phy_add
Seems I trimmed one too many lines in
29ca2d81bd2a62fa86bc9a72ddadcf03d7daf795 (lmo) rsp
7084338eb8eb0cc021ba86c340157bad397f3f0b (kernel.org) which led to no
functioning Ethernet on my WAG54Gv2. This patch restores the AWOL line.
Signed-off-by: Alexander Clouter <alex@digriz.org.uk>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1065/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Alexander Clouter [Fri, 12 Mar 2010 19:39:48 +0000 (19:39 +0000)]
MIPS: AR7: Fix phat finger of reset bit in vlynq_high_data
Seems in my whitespace cleanup
0f2536082d01448daeced8d9e82c3ba1751fefa3
(lmo) rsp.
8c2961da46abd85a71d20f2b169bf80618e (kernel.org) caused AR7
to no longer get as far as init. Fixed my phat fingering.
Signed-off-by: Alexander Clouter <alex@digriz.org.uk>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1064/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Wu Zhangjin [Tue, 9 Mar 2010 16:53:21 +0000 (00:53 +0800)]
MIPS: Loongson: Add module info to the loongson2_clock driver
This patch fixes a kernel warning when loading the the loongson2_clock
driver:
"Feb 25 23:42:27 localhost kernel: [ 4.965000] loongson2_clock: module
license 'unspecified' taints kernel."
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Reported-by: Liu Shiwei <liushiwei@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1045/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Wu Zhangjin [Thu, 11 Mar 2010 03:30:50 +0000 (11:30 +0800)]
MIPS: Lemote 2F: Ensure atomic execution of _rdmsr and _wrmsr
On Lemote 2F CS5536 MSRs are accessed through a index / data register pair.
The access sequence must be protected by a spinlock to be atomic.
Without this rebooting in fs2f_reboot() may fail.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1058/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Robert P. J. Day [Sat, 27 Feb 2010 17:02:51 +0000 (12:02 -0500)]
MIPS: Initialize an atomic_t properly with ATOMIC_INIT(0).
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1008/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Thu, 11 Mar 2010 07:48:14 +0000 (08:48 +0100)]
MIPS: Fix elfcore.c build warning
kernel/elfcore.c includes <linux/elf.h> which includes the <asm/elf.h>. In
<asm/elf.h>, struct pt_regs is declared inside the parameter list of the
elf_dump_regs function which causes a kernel build warning.
Fixed by adding a forward declaration of struct pt_regs.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Yang Shi [Wed, 3 Mar 2010 08:43:20 +0000 (16:43 +0800)]
MIPS: Octeon: Remove redundant declaration of octeon_reserve32_memory
octeon_reserve32_memory is defined In Octeon's setup.c, so remove the
redundant extern declaration of this variable.
Signed-off-by: Yang Shi <yang.shi@windriver.com>
To: f.fainelli@gmail.com
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1022/
Acked-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Wu Zhangjin [Tue, 9 Mar 2010 16:27:28 +0000 (00:27 +0800)]
MIPS: Trace: Don't trace irqsoff for the idle process
Like x86 did in arch/x86/kernel/{process_32.c,process_64.c}, also don't
trace irqsoff for idle.
If there's no useful work to be done, we don't care about the irqsoff
duration. If we trace the idle process, the max duration of irqsoff will
be the idle time and make the irqsoff tracer useless.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Patchwork: http://patchwork.linux-mips.org/patch/1044/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Wed, 10 Mar 2010 15:16:04 +0000 (16:16 +0100)]
MIPS: delay: Fix use of current_cpu_data in preemptable code.
This may lead to warnings like:
BUG: using smp_processor_id() in preemptible [
00000000] code: reboot/1989
caller is __udelay+0x14/0x70
Call Trace:
[<
ffffffff8110ad28>] dump_stack+0x8/0x34
[<
ffffffff812dde04>] debug_smp_processor_id+0xf4/0x110
[<
ffffffff812d90bc>] __udelay+0x14/0x70
[<
ffffffff81378274>] md_notify_reboot+0x12c/0x148
[<
ffffffff81161054>] notifier_call_chain+0x64/0xc8
[<
ffffffff811614dc>] __blocking_notifier_call_chain+0x64/0xc0
[<
ffffffff8115566c>] kernel_restart_prepare+0x1c/0x38
[<
ffffffff811556cc>] kernel_restart+0x14/0x50
[<
ffffffff8115581c>] SyS_reboot+0x10c/0x1f0
[<
ffffffff81103684>] handle_sysn32+0x44/0x84
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Wed, 3 Mar 2010 19:07:43 +0000 (11:07 -0800)]
MIPS: Octeon: Remove #if 0 code.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1029/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Wed, 3 Mar 2010 19:07:07 +0000 (11:07 -0800)]
MIPS: Octeon: Remove vestiges of CONFIG_CAVIUM_RESERVE32_USE_WIRED_TLB
The config option CAVIUM_RESERVE32_USE_WIRED_TLB is not supported.
Remove the dead code controlled by it.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1028/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Tue, 9 Mar 2010 19:16:15 +0000 (20:16 +0100)]
MIPS: Cavium: Remove unused watchdog code.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ralf Baechle [Mon, 8 Mar 2010 18:38:13 +0000 (19:38 +0100)]
MIPS: Fix build breakage if CONFIG_DEBUG_FS is enabled.
Caused by
38b7827fcdd660f591d645bd3ae6644456a4773c - no, cpu_local_* was
not unused.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Christoph Lameter <cl@linux-foundation.org>
Acked-by: David Daney <ddaney@caviumnetworks.com>
Linus Torvalds [Fri, 9 Apr 2010 18:53:06 +0000 (11:53 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/roland/infiniband
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
IB/mlx4: Check correct variable for allocation failure
RDMA/nes: Correct cap.max_inline_data assignment in nes_query_qp()
RDMA/cm: Set num_paths when manually assigning path records
IB/cm: Fix device_create() return value check
Linus Torvalds [Fri, 9 Apr 2010 18:52:48 +0000 (11:52 -0700)]
Merge branch 'for-linus' of git://git390.marist.edu/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
[S390] Update default configuration.
[S390] nss: add missing .previous statement to asm function
[S390] increase default size of vmalloc area
[S390] s390: disable change bit override
[S390] fix io_return critical section cleanup
[S390] sclp_async: potential buffer overflow
[S390] arch/s390/kernel: Add missing unlock
Linus Torvalds [Fri, 9 Apr 2010 18:50:29 +0000 (11:50 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: (34 commits)
cfq-iosched: Fix the incorrect timeslice accounting with forced_dispatch
loop: Update mtime when writing using aops
block: expose the statistics in blkio.time and blkio.sectors for the root cgroup
backing-dev: Handle class_create() failure
Block: Fix block/elevator.c elevator_get() off-by-one error
drbd: lc_element_by_index() never returns NULL
cciss: unlock on error path
cfq-iosched: Do not merge queues of BE and IDLE classes
cfq-iosched: Add additional blktrace log messages in CFQ for easier debugging
i2o: Remove the dangerous kobj_to_i2o_device macro
block: remove 16 bytes of padding from struct request on 64bits
cfq-iosched: fix a kbuild regression
block: make CONFIG_BLK_CGROUP visible
Remove GENHD_FL_DRIVERFS
block: Export max number of segments and max segment size in sysfs
block: Finalize conversion of block limits functions
block: Fix overrun in lcm() and move it to lib
vfs: improve writeback_inodes_wb()
paride: fix off-by-one test
drbd: fix al-to-on-disk-bitmap for 4k logical_block_size
...
Linus Torvalds [Fri, 9 Apr 2010 18:50:01 +0000 (11:50 -0700)]
Merge branch 'drm-linus' of git://git./linux/kernel/git/airlied/drm-2.6
* 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (29 commits)
drm/nouveau: bail out of auxch transaction if we repeatedly recieve defers
drm/nv50: implement gpio set/get routines
drm/nv50: parse/use some more de-magiced parts of gpio table entries
drm/nouveau: store raw gpio table entry in bios gpio structs
drm/nv40: Init some tiling-related PGRAPH state.
drm/nv50: Add NVA3 support in ctxprog/ctxvals generator.
drm/nv50: another dodgy DP hack
drm/nv50: punt hotplug irq handling out to workqueue
drm/nv50: preserve an unknown SOR_MODECTRL value for DP encoders
drm/nv50: Allow using the NVA3 new compute class.
drm/nv50: cleanup properly if PDISPLAY init fails
drm/nouveau: fixup the init failure paths some more
drm/nv50: fix instmem init on IGPs if stolen mem crosses 4GiB mark
drm/nv40: add LVDS table quirk for Dell Latitude D620
drm/nv40: rework lvds table parsing
drm/nouveau: detect vram amount once, and save the value
drm/nouveau: remove some unused members from drm_nouveau_private
drm/nouveau: Make use of TTM busy_placements.
drm/nv50: add more 0x100c80 flushy magic
drm/nv50: fix fbcon when framebuffer above 4GiB mark
...
David Howells [Tue, 6 Apr 2010 21:36:20 +0000 (22:36 +0100)]
radix_tree_tag_get() is not as safe as the docs make out [ver #2]
radix_tree_tag_get() is not safe to use concurrently with radix_tree_tag_set()
or radix_tree_tag_clear(). The problem is that the double tag_get() in
radix_tree_tag_get():
if (!tag_get(node, tag, offset))
saw_unset_tag = 1;
if (height == 1) {
int ret = tag_get(node, tag, offset);
may see the value change due to the action of set/clear. RCU is no protection
against this as no pointers are being changed, no nodes are being replaced
according to a COW protocol - set/clear alter the node directly.
The documentation in linux/radix-tree.h, however, says that
radix_tree_tag_get() is an exception to the rule that "any function modifying
the tree or tags (...) must exclude other modifications, and exclude any
functions reading the tree".
The problem is that the next statement in radix_tree_tag_get() checks that the
tag doesn't vary over time:
BUG_ON(ret && saw_unset_tag);
This has been seen happening in FS-Cache:
https://www.redhat.com/archives/linux-cachefs/2010-April/msg00013.html
To this end, remove the BUG_ON() from radix_tree_tag_get() and note in various
comments that the value of the tag may change whilst the RCU read lock is held,
and thus that the return value of radix_tree_tag_get() may not be relied upon
unless radix_tree_tag_set/clear() and radix_tree_delete() are excluded from
running concurrently with it.
Reported-by: Romain DEGEZ <romain.degez@smartjog.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pekka Enberg [Wed, 7 Apr 2010 16:23:41 +0000 (19:23 +0300)]
slub: Fix kmem_ptr_validate() for non-kernel pointers
As suggested by Linus, fix up kmem_ptr_validate() to handle non-kernel pointers
more graciously. The patch changes kmem_ptr_validate() to use the newly
introduced kern_ptr_validate() helper to check that a pointer is a valid kernel
pointer before we attempt to convert it into a 'struct page'.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Nick Piggin <npiggin@suse.de>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Acked-by: Christoph Lameter <cl@linux-foundation.org>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pekka Enberg [Wed, 7 Apr 2010 16:23:40 +0000 (19:23 +0300)]
slab: Generify kernel pointer validation
As suggested by Linus, introduce a kern_ptr_validate() helper that does some
sanity checks to make sure a pointer is a valid kernel pointer. This is a
preparational step for fixing SLUB kmem_ptr_validate().
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Nick Piggin <npiggin@suse.de>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 9 Apr 2010 17:05:33 +0000 (10:05 -0700)]
Revert "memory-hotplug: add 0x prefix to HEX block_size_bytes"
This reverts commit
ba168fc37dea145deeb8fa9e7e71c748d2e00d74.
It changes user-visible sysfs interfaces, and breaks some existing user
space applications which apparently rely on the fact that the output
does not contain the "0x" prefix.
Requested-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Roland Dreier [Fri, 9 Apr 2010 16:14:21 +0000 (09:14 -0700)]
Merge branches 'cma', 'misc', 'mlx4' and 'nes' into for-linus
Martin Schwidefsky [Fri, 9 Apr 2010 11:43:04 +0000 (13:43 +0200)]
[S390] Update default configuration.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Heiko Carstens [Fri, 9 Apr 2010 11:43:03 +0000 (13:43 +0200)]
[S390] nss: add missing .previous statement to asm function
The savesys_ipl_nss asm function is put into the .init.text section
however it is missing a ".previous" section which would restore the
previous section.
Luckily all functions in early.c are init functions so it doesn't
matter currently.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Martin Schwidefsky [Fri, 9 Apr 2010 11:43:02 +0000 (13:43 +0200)]
[S390] increase default size of vmalloc area
The default size of the vmalloc area is currently 1 GB. The memory resource
controller uses about 10 MB of vmalloc space per gigabyte of memory. That
turns a system with more than ~100 GB memory unbootable with the default
vmalloc size. It costs us nothing to increase the default size to some
more adequate value, e.g. 128 GB.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Christian Borntraeger [Fri, 9 Apr 2010 11:43:01 +0000 (13:43 +0200)]
[S390] s390: disable change bit override
commit
6a985c6194017de2c062916ad1cd00dee0302c40
([S390] s390: use change recording override for kernel mapping)
deactivated the change bit recording for the kernel mapping to
improve the performance. This works most of the time, but there
are cases (e.g. kernel runs in home space, futex atomic compare xcmg)
where we modify user memory with the kernel mapping instead of the
user mapping.
Instead of fixing these cases, this patch just deactivates change bit
override to avoid future problems with other kernel code that might
use the kernel mapping for user memory.
CC: stable@kernel.org
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Martin Schwidefsky [Fri, 9 Apr 2010 11:43:00 +0000 (13:43 +0200)]
[S390] fix io_return critical section cleanup
If a machine check interrupts the io interrupt handler on one of the
instructions between io_return and io_leave the critical section
cleanup code will move the return psw to io_work_loop. By doing that
the switch from the asynchronous interrupt stack to the process stack
is skipped. If e.g. TIF_NEED_RESCHED is set things break because
the scheduler is called with the asynchronous interrupts stack.
Moving the psw back to io_return instead fixes the problem.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Dan Carpenter [Fri, 9 Apr 2010 11:42:59 +0000 (13:42 +0200)]
[S390] sclp_async: potential buffer overflow
"len" hasn't been properly range checked so we shouldn't use it as an
array offset. This can only be written to by root but it would still be
annoying to accidentally write more than 3 characters and corrupt your
memory.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Julia Lawall [Fri, 9 Apr 2010 11:42:58 +0000 (13:42 +0200)]
[S390] arch/s390/kernel: Add missing unlock
In the default case the lock is not unlocked. The return is
converted to a goto, to share the unlock at the end of the function.
A simplified version of the semantic patch that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@r exists@
expression E1;
identifier f;
@@
f (...) { <+...
* spin_lock_irq (E1,...);
... when != E1
* return ...;
...+> }
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Divyesh Shah [Fri, 9 Apr 2010 07:29:57 +0000 (09:29 +0200)]
cfq-iosched: Fix the incorrect timeslice accounting with forced_dispatch
When CFQ dispatches requests forcefully due to a barrier or changing iosched,
it runs through all cfqq's dispatching requests and then expires each queue.
However, it does not activate a cfqq before flushing its IOs resulting in
using stale values for computing slice_used.
This patch fixes it by calling activate queue before flushing reuqests from
each queue.
This is useful mostly for barrier requests because when the iosched is changing
it really doesnt matter if we have incorrect accounting since we're going to
break down all structures anyway.
We also now expire the current timeslice before moving on with the dispatch
to accurately account slice used for that cfqq.
Signed-off-by: Divyesh Shah<dpshah@google.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Dave Airlie [Fri, 9 Apr 2010 04:27:51 +0000 (14:27 +1000)]
Merge remote branch 'nouveau/for-airlied' of ../drm-nouveau-next into drm-linus
* 'nouveau/for-airlied' of ../drm-nouveau-next: (21 commits)
drm/nouveau: bail out of auxch transaction if we repeatedly recieve defers
drm/nv50: implement gpio set/get routines
drm/nv50: parse/use some more de-magiced parts of gpio table entries
drm/nouveau: store raw gpio table entry in bios gpio structs
drm/nv40: Init some tiling-related PGRAPH state.
drm/nv50: Add NVA3 support in ctxprog/ctxvals generator.
drm/nv50: another dodgy DP hack
drm/nv50: punt hotplug irq handling out to workqueue
drm/nv50: preserve an unknown SOR_MODECTRL value for DP encoders
drm/nv50: Allow using the NVA3 new compute class.
drm/nv50: cleanup properly if PDISPLAY init fails
drm/nouveau: fixup the init failure paths some more
drm/nv50: fix instmem init on IGPs if stolen mem crosses 4GiB mark
drm/nv40: add LVDS table quirk for Dell Latitude D620
drm/nv40: rework lvds table parsing
drm/nouveau: detect vram amount once, and save the value
drm/nouveau: remove some unused members from drm_nouveau_private
drm/nouveau: Make use of TTM busy_placements.
drm/nv50: add more 0x100c80 flushy magic
drm/nv50: fix fbcon when framebuffer above 4GiB mark
...
Ben Skeggs [Mon, 15 Mar 2010 22:45:07 +0000 (08:45 +1000)]
drm/nouveau: bail out of auxch transaction if we repeatedly recieve defers
There's one known case where we never stop recieving DEFER, and loop here
forever. Lets not do that..
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Wed, 7 Apr 2010 02:57:35 +0000 (12:57 +1000)]
drm/nv50: implement gpio set/get routines
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Wed, 7 Apr 2010 02:05:32 +0000 (12:05 +1000)]
drm/nv50: parse/use some more de-magiced parts of gpio table entries
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Wed, 7 Apr 2010 02:00:14 +0000 (12:00 +1000)]
drm/nouveau: store raw gpio table entry in bios gpio structs
And use our own version of the GPIO table for the INIT_GPIO opcode.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Francisco Jerez [Tue, 6 Apr 2010 19:11:58 +0000 (21:11 +0200)]
drm/nv40: Init some tiling-related PGRAPH state.
Fixes garbled 3D on an nv46 card.
Reported-by: Francesco Marella <francesco.marella@gmail.com>
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Marcin Kościelnicki [Fri, 2 Apr 2010 10:28:18 +0000 (10:28 +0000)]
drm/nv50: Add NVA3 support in ctxprog/ctxvals generator.
Signed-off-by: Marcin Kościelnicki <koriakin@0x04.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Tue, 30 Mar 2010 06:01:41 +0000 (16:01 +1000)]
drm/nv50: another dodgy DP hack
Allows *some* DP cards to keep working in some corner cases that most
people shouldn't hit. I hit it all the time with development, so this
can stay for now.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Tue, 30 Mar 2010 05:14:41 +0000 (15:14 +1000)]
drm/nv50: punt hotplug irq handling out to workqueue
On DP outputs we'll likely end up running vbios init tables here, which
may sleep.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Mon, 29 Mar 2010 00:06:09 +0000 (10:06 +1000)]
drm/nv50: preserve an unknown SOR_MODECTRL value for DP encoders
This value interacts with some registers we don't currently know how to
program properly ourselves. The default of 5 that we were using matches
what the VBIOS on early DP cards do, but later ones use 6, which would
cause nouveau to program an incorrect mode on these chips.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Marcin Kościelnicki [Wed, 24 Mar 2010 13:43:16 +0000 (13:43 +0000)]
drm/nv50: Allow using the NVA3 new compute class.
Signed-off-by: Marcin Kościelnicki <koriakin@0x04.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Thu, 25 Mar 2010 06:01:04 +0000 (16:01 +1000)]
drm/nv50: cleanup properly if PDISPLAY init fails
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Thu, 25 Mar 2010 06:00:09 +0000 (16:00 +1000)]
drm/nouveau: fixup the init failure paths some more
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Fri, 19 Mar 2010 02:49:59 +0000 (12:49 +1000)]
drm/nv50: fix instmem init on IGPs if stolen mem crosses 4GiB mark
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Thu, 18 Mar 2010 03:38:04 +0000 (13:38 +1000)]
drm/nv40: add LVDS table quirk for Dell Latitude D620
Should fix:
https://bugzilla.redhat.com/show_bug.cgi?id=505132
https://bugzilla.redhat.com/show_bug.cgi?id=543091
https://bugzilla.redhat.com/show_bug.cgi?id=530425
https://bugs.edge.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/
+bug/539730
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Thu, 18 Mar 2010 02:05:43 +0000 (12:05 +1000)]
drm/nv40: rework lvds table parsing
All indications seem to be that the version 0x30 table should be handled
the same way as 0x40 (as used on G80), at least for the parts that we
currently try use.
This commit cleans up the parsing to make it clearer about what we're
actually trying to achieve, and unifies the 0x30/0x40 parsing.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Wed, 17 Mar 2010 23:45:20 +0000 (09:45 +1000)]
drm/nouveau: detect vram amount once, and save the value
As opposed to repeatedly reading the amount back from the GPU every
time we need to know the VRAM size.
We should now fail to load gracefully on detecting no VRAM, rather than
something potentially messy happening.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Wed, 17 Mar 2010 23:23:19 +0000 (09:23 +1000)]
drm/nouveau: remove some unused members from drm_nouveau_private
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Francisco Jerez [Thu, 18 Mar 2010 12:07:47 +0000 (13:07 +0100)]
drm/nouveau: Make use of TTM busy_placements.
Previously we were filling it the same as "placements", but in some
cases there're valid alternatives that we were ignoring completely.
Keeping a back-up memory type helps on several low-mem situations.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Mon, 15 Mar 2010 06:43:47 +0000 (16:43 +1000)]
drm/nv50: add more 0x100c80 flushy magic
Fixes the !vbo_fifo path in the 3D driver on certain chipsets. Still not
really any good idea of what exactly the magic achieves, but it makes
things work.
While we're at it, in the PCIEGART path, flush on unbinding also.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Tue, 16 Mar 2010 03:20:58 +0000 (13:20 +1000)]
drm/nv50: fix fbcon when framebuffer above 4GiB mark
This can't actually happen right now, but lets fix it anyway.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Marcin Kościelnicki [Wed, 17 Mar 2010 00:58:47 +0000 (00:58 +0000)]
drm/nv50: Fix NEWCTX_DONE flag number
Signed-off-by: Marcin Kościelnicki <koriakin@0x04.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Nikanth Karthikesan [Thu, 8 Apr 2010 19:39:31 +0000 (21:39 +0200)]
loop: Update mtime when writing using aops
Update mtime when writing to backing filesystem using the address space
operations write_begin and write_end.
Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Linus Torvalds [Thu, 8 Apr 2010 18:58:14 +0000 (11:58 -0700)]
Merge git://git./linux/kernel/git/sfrench/cifs-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
not overwriting file_lock structure after GET_LK
cifs: Fix a kernel BUG with remote OS/2 server (try #3)
[CIFS] initialize nbytes at the beginning of CIFSSMBWrite()
[CIFS] Add mmap for direct, nobrl cifs mount types
Linus Torvalds [Thu, 8 Apr 2010 17:02:02 +0000 (10:02 -0700)]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
libata: Fix accesses at LBA28 boundary (old bug, but nasty) (v2)
Mark Lord [Wed, 7 Apr 2010 17:52:08 +0000 (13:52 -0400)]
libata: Fix accesses at LBA28 boundary (old bug, but nasty) (v2)
Most drives from Seagate, Hitachi, and possibly other brands,
do not allow LBA28 access to sector number 0x0fffffff (2^28 - 1).
So instead use LBA48 for such accesses.
This bug could bite a lot of systems, especially when the user has
taken care to align partitions to 4KB boundaries. On misaligned systems,
it is less likely to be encountered, since a 4KB read would end at
0x10000000 rather than at 0x0fffffff.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Linus Torvalds [Thu, 8 Apr 2010 15:37:05 +0000 (08:37 -0700)]
Merge branch 'sched-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
sched: Fix sched_getaffinity()
Linus Torvalds [Thu, 8 Apr 2010 14:45:36 +0000 (07:45 -0700)]
Merge git://git./linux/kernel/git/davem/ide-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6:
ide: Fix IDE taskfile with cfq scheduler
ide: Must hold queue lock when requeueing
ide: Requeue request after DMA timeout
Linus Torvalds [Thu, 8 Apr 2010 14:44:53 +0000 (07:44 -0700)]
Merge branch 'release' of git://git./linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
ACPI / PM: Move ACPI video resume to a PM notifier
ACPI: Reduce ACPI resource conflict message to KERN_WARNING, printk cleanup
ACPI: battery drivers should call power_supply_changed()
ACPI: battery: Fix CONFIG_ACPI_SYSFS_POWER=n
PNPACPI: truncate _CRS windows with _LEN > _MAX - _MIN + 1
ACPI: Don't send KEY_UNKNOWN for random video notifications
ACPI: NUMA: map pxms to low node ids
ACPI: use _HID when supplied by root-level devices
ACPI / ACPICA: Do not check reference counters in acpi_ev_enable_gpe()
ACPI: fixes a false alarm from lockdep
ACPI dock: support multiple ACPI dock devices
ACPI: EC: Allow multibyte access to EC
Linus Torvalds [Thu, 8 Apr 2010 01:49:20 +0000 (18:49 -0700)]
Merge git://git./linux/kernel/git/rusty/linux-2.6-for-linus
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
hvc_console: Fix race between hvc_close and hvc_remove
virtio: disable multiport console support.
virtio: console makes incorrect assumption about virtio API
virtio: console: Fix early_put_chars usage
MAINTAINERS: Put the virtio-console entry in correct alphabetical order
Anton Blanchard [Tue, 6 Apr 2010 11:42:38 +0000 (21:42 +1000)]
hvc_console: Fix race between hvc_close and hvc_remove
I don't claim to understand the tty layer, but it seems like hvc_open and
hvc_close should be balanced in their kref reference counting.
Right now we get a kref every call to hvc_open:
if (hp->count++ > 0) {
tty_kref_get(tty); <----- here
spin_unlock_irqrestore(&hp->lock, flags);
hvc_kick();
return 0;
} /* else count == 0 */
tty->driver_data = hp;
hp->tty = tty_kref_get(tty); <------ or here if hp->count was 0
But hvc_close has:
tty_kref_get(tty);
if (--hp->count == 0) {
...
/* Put the ref obtained in hvc_open() */
tty_kref_put(tty);
...
}
tty_kref_put(tty);
Since the outside kref get/put balance we only do a single kref_put when
count reaches 0.
The patch below changes things to call tty_kref_put once for every
hvc_close call, and with that my machine boots fine.
Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Michael S. Tsirkin [Wed, 31 Mar 2010 18:56:42 +0000 (21:56 +0300)]
virtio: disable multiport console support.
Move MULTIPORT feature and related config changes
out of exported headers, and disable the feature
at runtime.
At this point, it seems less risky to keep code around
until we can enable it than rip it out completely.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Rusty Russell [Thu, 8 Apr 2010 15:46:16 +0000 (09:46 -0600)]
virtio: console makes incorrect assumption about virtio API
The get_buf() API sets the second arg to the number of bytes *written*
by the other side; in this case it should be zero as these are output buffers.
lguest gets this right (obviously kvm's console doesn't), resulting in
continual buildup of console writes.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Amit Shah <amit.shah@redhat.com>
François Diakhaté [Tue, 23 Mar 2010 12:53:15 +0000 (18:23 +0530)]
virtio: console: Fix early_put_chars usage
Currently early_put_chars is not used by virtio_console because it can
only be used once a port has been found, at which point it's too late
because it is no longer needed. This patch should fix it.
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Amit Shah [Tue, 23 Mar 2010 12:53:09 +0000 (18:23 +0530)]
MAINTAINERS: Put the virtio-console entry in correct alphabetical order
Move around the entry for virtio-console to keep the file sorted.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Kevin Hilman [Wed, 7 Apr 2010 18:52:46 +0000 (11:52 -0700)]
rwsem generic spinlock: use IRQ save/restore spinlocks
rwsems can be used with IRQs disabled, particularily in early boot
before IRQs are enabled. Currently the spin_unlock_irq() usage in the
slow-patch will unconditionally enable interrupts and cause problems
since interrupts are not yet initialized or enabled.
This patch uses save/restore versions of IRQ spinlocks in the slowpath
to ensure interrupts are not unintentionally disabled.
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Wed, 7 Apr 2010 23:06:07 +0000 (00:06 +0100)]
Have nfs ->d_revalidate() report errors properly
If nfs atomic open implementation ends up doing open request from
->d_revalidate() codepath and gets an error from server, return that error
to caller explicitly and don't bother with lookup_instantiate_filp() at all.
->d_revalidate() can return an error itself just fine...
See
http://bugzilla.kernel.org/show_bug.cgi?id=15674
http://marc.info/?l=linux-kernel&m=
126988782722711&w=2
for original report.
Reported-by: Daniel J Blueman <daniel.blueman@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dan Carpenter [Wed, 7 Apr 2010 09:39:01 +0000 (09:39 +0000)]
IB/mlx4: Check correct variable for allocation failure
The intent here is to check the "mfrpl->mapped_page_list" allocation.
We checked "mfrpl->ibfrpl.page_list" earlier.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Chien Tung [Thu, 25 Mar 2010 13:39:50 +0000 (13:39 +0000)]
RDMA/nes: Correct cap.max_inline_data assignment in nes_query_qp()
cap.max_inline_data is incorrectly set in init_attr instead of attr.
Set it in attr so subsequent init_attr.cap assignment will get the
correct value.
Signed-off-by: Chien Tung <chien.tin.tung@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Sean Hefty [Thu, 25 Mar 2010 19:12:36 +0000 (19:12 +0000)]
RDMA/cm: Set num_paths when manually assigning path records
When manually assigning the path records to use for a connection, save
the number of paths that were set. Otherwise, checks against num_path
will show 0, even though path record data is available.
This was discovered by manually setting the path records from user
space, then querying the kernel to see if the correct path records
were assigned, only to discover that the kernel returned 0 path
records to the query.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Linus Torvalds [Wed, 7 Apr 2010 21:01:51 +0000 (14:01 -0700)]
Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
perf, x86: Enable Nehalem-EX support
perf kmem: Fix breakage introduced by
5a0e3ad slab.h script
Linus Torvalds [Wed, 7 Apr 2010 18:03:06 +0000 (11:03 -0700)]
Merge branch 'davinci-fixes-for-linus' of git://git./linux/kernel/git/khilman/linux-davinci
* 'davinci-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci:
davinci: fix compile warning: <mach/da8xx.h>: #include <linux/platform_device.h>
davinci: DM365: fix duplicate default IRQ priorities
davinci: edma: clear events in edma_start()
davinci: da8xx/omap-l1: fix build error when CONFIG_DAVINCI_MUX is undefined
davinci: timers: don't enable timer until clocksource is initialized
Linus Torvalds [Wed, 7 Apr 2010 18:02:23 +0000 (11:02 -0700)]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/x86/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip:
x86: Fix double enable_IR_x2apic() call on SMP kernel on !SMP boards
x86: Increase CONFIG_NODES_SHIFT max to 10
ibft, x86: Change reserve_ibft_region() to find_ibft_region()
x86, hpet: Fix bug in RTC emulation
x86, hpet: Erratum workaround for read after write of HPET comparator
bootmem, x86: Fix 32bit numa system without RAM on node 0
nobootmem, x86: Fix 32bit numa system without RAM on node 0
x86: Handle overlapping mptables
x86: Make e820_remove_range to handle all covered case
x86-32, resume: do a global tlb flush in S4 resume
Sergei Shtylyov [Fri, 26 Mar 2010 14:56:58 +0000 (17:56 +0300)]
davinci: fix compile warning: <mach/da8xx.h>: #include <linux/platform_device.h>
This hushes the following warning:
arch/arm/mach-davinci/include/mach/da8xx.h:104: warning: ‘struct platform_device’
declared inside parameter list
arch/arm/mach-davinci/include/mach/da8xx.h:104: warning: its scope is only this
definition or declaration, which is probably not what you want
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Linus Torvalds [Wed, 7 Apr 2010 15:48:39 +0000 (08:48 -0700)]
Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze
* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze:
microblaze: Remove unused variable from ptrace
microblaze: io.h: Add io big-endian function
microblaze: Enable memory leak detector
microblaze: Fix futex code
microblaze: Fix ftrace_update_ftrace_func panic
Linus Torvalds [Wed, 7 Apr 2010 15:42:25 +0000 (08:42 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ALSA: mixart: range checking proc file
ALSA: hda - Fix a wrong array range check in patch_realtek.c
ALSA: ASoC: move dma_data from snd_soc_dai to snd_soc_pcm_stream
ALSA: hda - Enable amplifiers on Acer Inspire 6530G
ASoC: Only do WM8994 bias off transition from standby
ASoC: Don't use DCS_DATAPATH_BUSY for WM hubs devices
ASoC: Don't do runtime wm_hubs DC servo updates if using offset correction
ASoC: Support second DC servo readback method for wm_hubs
ASoC: Avoid wraparound in wm_hubs DC servo correction
ALSA: echoaudio - Eliminate use after free
ALSA: i2c: cleanup: change parameter to pointer
ALSA: hda - Add MSI blacklist for Aopen MZ915-M
ASoC: OMAP: Fix capture pointer handling for OMAP1510 to work correctly with recent ALSA PCM code
ALSA: hda - Update document about MSI and interrupts
ALSA: hda: Fix 0 dB offset for Lenovo Thinkpad models using AD1981
ALSA: hda - Add missing printk argument in previous patch
ASoC: Fix passing platform_data to ac97 bus users and fix a leak
ALSA: hda - Fix ADC/MUX assignment of ALC269 codec
ALSA: hda - Fix invalid bit values passed to snd_hda_codec_amp_stereo()
ASoC: wm8994: playback => capture
Linus Torvalds [Wed, 7 Apr 2010 15:38:27 +0000 (08:38 -0700)]
Merge branch 'slabh' of git://git./linux/kernel/git/tj/misc
* 'slabh' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc:
nodemask: include slab.h from drivers/base/node.c
David Howells [Tue, 6 Apr 2010 21:35:09 +0000 (14:35 -0700)]
fs-cache: order the debugfs stats correctly
Order the debugfs statistics correctly. The values displayed through a
seq_printf() statement should be in the same order as the names in the
format string.
In the 'Lookups' line, objects created ('crt=') and lookups timed out
('tmo=') have their values transposed.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Howells [Tue, 6 Apr 2010 21:35:09 +0000 (14:35 -0700)]
frv: fix kernel/user segment handling in NOMMU mode
In NOMMU mode, the FRV segment handling is broken because KERNEL_DS ==
USER_DS. This causes tests of the following sort:
/* don't pin down non-user-based iovecs */
if (segment_eq(get_fs(), KERNEL_DS))
return NULL;
to malfunction.
To fix this, make USER_DS the top of RAM instead of the top of the non-IO
address space, and make KERNEL_DS one more than the top of the non-IO
address space.
Also get rid of FRV's __addr_ok() as nothing uses it.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Howells [Tue, 6 Apr 2010 21:35:08 +0000 (14:35 -0700)]
frv: hide uncached_access() when pgprot_noncached is not #defined
Hide uncached_access() when pgprot_noncached is not #defined. This prevents
the following warning:
CC drivers/char/mem.o
drivers/char/mem.c:229: warning: 'uncached_access' defined but not used
Repairs
d7d4d849b4e3acc405ec222884936800ffb26d48 ("drivers/char/mem.c:
cleanups").
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Vladimir Zapolskiy [Tue, 6 Apr 2010 21:35:07 +0000 (14:35 -0700)]
rtc-mxc: multiple fixes in rtc-mxc probe method
On exit paths in mxc_rtc_probe() method some resources are not freed
correctly.
This patch fixes:
* unrequested memory region containing imx RTC registers
* iounmap() isn't called on exit_free_pdata branch
* clock get rate is called for freed clock source
* clock isn't disabled on exit_put_clk branch
To simplify the fix managed device resources are used.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Vladimir Zapolskiy <vzapolskiy@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
KAMEZAWA Hiroyuki [Tue, 6 Apr 2010 21:35:05 +0000 (14:35 -0700)]
memcg: fix race in file_mapped accounting
Presently, memcg's FILE_MAPPED accounting has following race with
move_account (happens at rmdir()).
increment page->mapcount (rmap.c)
mem_cgroup_update_file_mapped() move_account()
lock_page_cgroup()
check page_mapped() if
page_mapped(page)>1 {
FILE_MAPPED -1 from old memcg
FILE_MAPPED +1 to old memcg
}
.....
overwrite pc->mem_cgroup
unlock_page_cgroup()
lock_page_cgroup()
FILE_MAPPED + 1 to pc->mem_cgroup
unlock_page_cgroup()
Then,
old memcg (-1 file mapped)
new memcg (+2 file mapped)
This happens because move_account see page_mapped() which is not guarded
by lock_page_cgroup(). This patch adds FILE_MAPPED flag to page_cgroup
and move account information based on it. Now, all checks are synchronous
with lock_page_cgroup().
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Balbir Singh <balbir@in.ibm.com>
Reviewed-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Andrea Righi <arighi@develer.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Naoya Horiguchi [Tue, 6 Apr 2010 21:35:04 +0000 (14:35 -0700)]
pagemap: fix pfn calculation for hugepage
When we look into pagemap using page-types with option -p, the value of
pfn for hugepages looks wrong (see below.) This is because pte was
evaluated only once for one vma although it should be updated for each
hugepage. This patch fixes it.
$ page-types -p 3277 -Nl -b huge
voffset offset len flags
7f21e8a00 11e400 1 ___U___________H_G________________
7f21e8a01 11e401 1ff ________________TG________________
^^^
7f21e8c00 11e400 1 ___U___________H_G________________
7f21e8c01 11e401 1ff ________________TG________________
^^^
One hugepage contains 1 head page and 511 tail pages in x86_64 and each
two lines represent each hugepage. Voffset and offset mean virtual
address and physical address in the page unit, respectively. The
different hugepages should not have the same offset value.
With this patch applied:
$ page-types -p 3386 -Nl -b huge
voffset offset len flags
7fec7a600 112c00 1 ___UD__________H_G________________
7fec7a601 112c01 1ff ________________TG________________
^^^
7fec7a800 113200 1 ___UD__________H_G________________
7fec7a801 113201 1ff ________________TG________________
^^^
OK
More info:
- This patch modifies walk_page_range()'s hugepage walker. But the
change only affects pagemap_read(), which is the only caller of hugepage
callback.
- Without this patch, hugetlb_entry() callback is called per vma, that
doesn't match the natural expectation from its name.
- With this patch, hugetlb_entry() is called per hugepte entry and the
callback can become much simpler.
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Yong Zhang [Tue, 6 Apr 2010 21:35:03 +0000 (14:35 -0700)]
ratelimit: fix the return value when __ratelimit() fails to acquire the lock
The log of commit
edaac8e3167501cda336231d00611bf59c164346 ("ratelimit:
Fix/allow use in atomic contexts"), indicates that we want to suppress the
callback when the trylock fails.
Signed-off-by: Yong Zhang <yong.zhang@windriver.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Yong Zhang [Tue, 6 Apr 2010 21:35:02 +0000 (14:35 -0700)]
kernel.h: fix wrong usage of __ratelimit()
When __ratelimit() returns 1 this means that we can go ahead.
Signed-off-by: Yong Zhang <yong.zhang@windriver.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Yong Zhang [Tue, 6 Apr 2010 21:35:01 +0000 (14:35 -0700)]
ratelimit: annotate ___ratelimit()
To prevent from wrongly using the return value.
[akpm@linux-foundation.org: fix spello]
Signed-off-by: Yong Zhang <yong.zhang@windriver.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Dave Young <hidave.darkstar@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Eric Dumazet [Tue, 6 Apr 2010 21:35:01 +0000 (14:35 -0700)]
/dev/mem: allow rewinding
commit
dcefafb6 ("/dev/mem: dont allow seek to last page") inadvertently
disabled rewinding on /dev/mem.
This broke x86info for example.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>