OSDN Git Service
Jean Delvare [Fri, 8 Aug 2014 21:20:05 +0000 (14:20 -0700)]
drivers/rtc/Kconfig: add hardware dependency to rtc-moxart
The rtc-moxart driver is only useful on MOXA ART systems so it should
depend on ARCH_MOXART as all other MOXA ART drivers already do. Add
COMPILE_TEST as an alternative to allow for build testing on other
systems.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Jonas Jensen <jonas.jensen@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jean Delvare [Fri, 8 Aug 2014 21:20:03 +0000 (14:20 -0700)]
drivers/rtc/Kconfig: move DS2404 entry where it belongs
Move the DS2404 entry together with the other Dallas entries, and add
Maxim so that it looks nicer (and more correct, too.)
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Sven Schnelle <svens@stackframe.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Raghavendra Ganiga [Fri, 8 Aug 2014 21:20:01 +0000 (14:20 -0700)]
drivers/rtc/rtc-ds1343.c: add support of nvram for maxim dallas rtc ds1343
This is a patch to add support of nvram for maxim dallas rtc ds1343.
Signed-off-by: Raghavendra Chandra Ganiga <ravi23ganiga@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
NeilBrown [Fri, 8 Aug 2014 21:19:58 +0000 (14:19 -0700)]
autofs4: comment typo: remove a a doubled word
Signed-off-by: NeilBrown <neilb@suse.de>
Acked-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
NeilBrown [Fri, 8 Aug 2014 21:19:56 +0000 (14:19 -0700)]
autofs4: remove some unused inline functions
{__,}manage_dentry_{set,clear}_{automount,transit}
are 4 unused inline functions. Discard them.
Signed-off-by: NeilBrown <neilb@suse.de>
Acked-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
NeilBrown [Fri, 8 Aug 2014 21:19:54 +0000 (14:19 -0700)]
autofs4: don't take spinlock when not needed in autofs4_lookup_expiring
If the expiring_list is empty, we can avoid a costly spinlock in the
rcu-walk path through autofs4_d_manage (once the rest of the path
becomes rcu-walk friendly).
Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
NeilBrown [Fri, 8 Aug 2014 21:19:52 +0000 (14:19 -0700)]
autofs4: remove a redundant assignment
The variable 'ino' already exists and already has the correct value.
The d_fsdata of a dentry is never changed after the d_fsdata is
instantiated, so this new assignment cannot be necessary.
It was introduced in commit
b5b801779d59 ("autofs4: Add d_manage()
dentry operation").
Signed-off-by: NeilBrown <neilb@suse.de>
Acked-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
NeilBrown [Fri, 8 Aug 2014 21:19:50 +0000 (14:19 -0700)]
autofs4: remove unused autofs4_ispending()
Signed-off-by: NeilBrown <neilb@suse.de>
Acked-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fabian Frederick [Fri, 8 Aug 2014 21:19:48 +0000 (14:19 -0700)]
kernel/test_kprobes.c: use current logging functions
- Add pr_fmt
- Coalesce formats
- Use current pr_foo() functions instead of printk
- Remove unnecessary "failed" display (already in log level).
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Paul Gortmaker [Fri, 8 Aug 2014 21:19:46 +0000 (14:19 -0700)]
init: make rootdelay=N consistent with rootwait behaviour
Currently rootdelay=N and rootwait behave differently (aside from the
obvious unbounded wait duration) because they are at different places in
the init sequence.
The difference manifests itself for md devices because the call to
md_run_setup() lives between rootdelay and rootwait, so if you try to use
rootdelay=20 to try and allow a slow RAID0 array to assemble, you get
this:
[ 4.526011] sd 6:0:0:0: [sdc] Attached SCSI removable disk
[ 22.972079] md: Waiting for all devices to be available before autodetect
i.e. you've achieved nothing other than delaying the probing 20s, when
what you wanted was a 20s delay _after_ the probing for md devices was
initiated.
Here we move the rootdelay code to be right beside the rootwait code, so
that their behaviour is consistent.
It should be noted that in doing so, the actions based on the
saved_root_name[0] and initrd_load() were previously put on hold by
rootdelay=N and now currently will not be delayed. However, I think
consistent behaviour is more important than matching historical behaviour
of delaying the above two operations.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fabian Frederick [Fri, 8 Aug 2014 21:19:43 +0000 (14:19 -0700)]
fs/ramfs/file-nommu.c: replace count*size kzalloc by kcalloc
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Cc: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Namhyung Kim [Fri, 8 Aug 2014 21:19:41 +0000 (14:19 -0700)]
kernel/kallsyms.c: fix %pB when there's no symbol at the address
__sprint_symbol() should restore original address when kallsyms_lookup()
failed to find a symbol. It's reported when dumpstack shows an address in
a dynamically allocated trampoline for ftrace.
[ 1314.612287] [<
ffffffff81700312>] dump_stack+0x45/0x56
[ 1314.612290] [<
ffffffff8125f5b0>] ? meminfo_proc_open+0x30/0x30
[ 1314.612293] [<
ffffffffa080a494>] kpatch_ftrace_handler+0x14/0xf0 [kpatch]
[ 1314.612306] [<
ffffffffa00160c4>] 0xffffffffa00160c3
You can see a difference in the hex address - c4 and c3. Fix it.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Reported-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fabian Frederick [Fri, 8 Aug 2014 21:19:39 +0000 (14:19 -0700)]
fs/efs/namei.c: return is not a function
Fix checkpatch errors:
"ERROR: return is not a function, parentheses are not required"
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fabian Frederick [Fri, 8 Aug 2014 21:19:35 +0000 (14:19 -0700)]
mm/zswap.c: add __init to zswap_entry_cache_destroy()
zswap_entry_cache_destroy() is only called by __init init_zswap().
This patch also fixes function name zswap_entry_cache_ s/destory/destroy
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Acked-by: Seth Jennings <sjennings@variantweb.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Johannes Weiner [Fri, 8 Aug 2014 21:19:33 +0000 (14:19 -0700)]
mm: memcontrol: avoid charge statistics churn during page migration
Charge migration currently disables IRQs twice to update the charge
statistics for the old page and then again for the new page.
But migration is a seamless transition of a charge from one physical
page to another one of the same size, so this should be a non-event from
an accounting point of view. Leave the statistics alone.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Greg Thelen [Fri, 8 Aug 2014 21:19:31 +0000 (14:19 -0700)]
memcg: remove lookup_cgroup_page() prototype
Commit
6b208e3f6e35 ("mm: memcg: remove unused node/section info from
pc->flags") deleted lookup_cgroup_page() but left a prototype for it.
Kill the vestigial prototype.
Signed-off-by: Greg Thelen <gthelen@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Vladimir Davydov [Fri, 8 Aug 2014 21:19:28 +0000 (14:19 -0700)]
page-cgroup: get rid of NR_PCG_FLAGS
It's not used anywhere today, so let's remove it.
Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Vladimir Davydov [Fri, 8 Aug 2014 21:19:26 +0000 (14:19 -0700)]
page-cgroup: trivial cleanup
Add forward declarations for struct pglist_data, mem_cgroup.
Remove __init, __meminit from function prototypes and inline functions.
Remove redundant inclusion of bit_spinlock.h.
Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Johannes Weiner [Fri, 8 Aug 2014 21:19:24 +0000 (14:19 -0700)]
mm: memcontrol: use page lists for uncharge batching
Pages are now uncharged at release time, and all sources of batched
uncharges operate on lists of pages. Directly use those lists, and
get rid of the per-task batching state.
This also batches statistics accounting, in addition to the res
counter charges, to reduce IRQ-disabling and re-enabling.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Hugh Dickins <hughd@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vladimir Davydov <vdavydov@parallels.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Vladimir Davydov <vdavydov@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Johannes Weiner [Fri, 8 Aug 2014 21:19:22 +0000 (14:19 -0700)]
mm: memcontrol: rewrite uncharge API
The memcg uncharging code that is involved towards the end of a page's
lifetime - truncation, reclaim, swapout, migration - is impressively
complicated and fragile.
Because anonymous and file pages were always charged before they had their
page->mapping established, uncharges had to happen when the page type
could still be known from the context; as in unmap for anonymous, page
cache removal for file and shmem pages, and swap cache truncation for swap
pages. However, these operations happen well before the page is actually
freed, and so a lot of synchronization is necessary:
- Charging, uncharging, page migration, and charge migration all need
to take a per-page bit spinlock as they could race with uncharging.
- Swap cache truncation happens during both swap-in and swap-out, and
possibly repeatedly before the page is actually freed. This means
that the memcg swapout code is called from many contexts that make
no sense and it has to figure out the direction from page state to
make sure memory and memory+swap are always correctly charged.
- On page migration, the old page might be unmapped but then reused,
so memcg code has to prevent untimely uncharging in that case.
Because this code - which should be a simple charge transfer - is so
special-cased, it is not reusable for replace_page_cache().
But now that charged pages always have a page->mapping, introduce
mem_cgroup_uncharge(), which is called after the final put_page(), when we
know for sure that nobody is looking at the page anymore.
For page migration, introduce mem_cgroup_migrate(), which is called after
the migration is successful and the new page is fully rmapped. Because
the old page is no longer uncharged after migration, prevent double
charges by decoupling the page's memcg association (PCG_USED and
pc->mem_cgroup) from the page holding an actual charge. The new bits
PCG_MEM and PCG_MEMSW represent the respective charges and are transferred
to the new page during migration.
mem_cgroup_migrate() is suitable for replace_page_cache() as well,
which gets rid of mem_cgroup_replace_page_cache(). However, care
needs to be taken because both the source and the target page can
already be charged and on the LRU when fuse is splicing: grab the page
lock on the charge moving side to prevent changing pc->mem_cgroup of a
page under migration. Also, the lruvecs of both pages change as we
uncharge the old and charge the new during migration, and putback may
race with us, so grab the lru lock and isolate the pages iff on LRU to
prevent races and ensure the pages are on the right lruvec afterward.
Swap accounting is massively simplified: because the page is no longer
uncharged as early as swap cache deletion, a new mem_cgroup_swapout() can
transfer the page's memory+swap charge (PCG_MEMSW) to the swap entry
before the final put_page() in page reclaim.
Finally, page_cgroup changes are now protected by whatever protection the
page itself offers: anonymous pages are charged under the page table lock,
whereas page cache insertions, swapin, and migration hold the page lock.
Uncharging happens under full exclusion with no outstanding references.
Charging and uncharging also ensure that the page is off-LRU, which
serializes against charge migration. Remove the very costly page_cgroup
lock and set pc->flags non-atomically.
[mhocko@suse.cz: mem_cgroup_charge_statistics needs preempt_disable]
[vdavydov@parallels.com: fix flags definition]
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vladimir Davydov <vdavydov@parallels.com>
Tested-by: Jet Chen <jet.chen@intel.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Tested-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Johannes Weiner [Fri, 8 Aug 2014 21:19:20 +0000 (14:19 -0700)]
mm: memcontrol: rewrite charge API
These patches rework memcg charge lifetime to integrate more naturally
with the lifetime of user pages. This drastically simplifies the code and
reduces charging and uncharging overhead. The most expensive part of
charging and uncharging is the page_cgroup bit spinlock, which is removed
entirely after this series.
Here are the top-10 profile entries of a stress test that reads a 128G
sparse file on a freshly booted box, without even a dedicated cgroup (i.e.
executing in the root memcg). Before:
15.36% cat [kernel.kallsyms] [k] copy_user_generic_string
13.31% cat [kernel.kallsyms] [k] memset
11.48% cat [kernel.kallsyms] [k] do_mpage_readpage
4.23% cat [kernel.kallsyms] [k] get_page_from_freelist
2.38% cat [kernel.kallsyms] [k] put_page
2.32% cat [kernel.kallsyms] [k] __mem_cgroup_commit_charge
2.18% kswapd0 [kernel.kallsyms] [k] __mem_cgroup_uncharge_common
1.92% kswapd0 [kernel.kallsyms] [k] shrink_page_list
1.86% cat [kernel.kallsyms] [k] __radix_tree_lookup
1.62% cat [kernel.kallsyms] [k] __pagevec_lru_add_fn
After:
15.67% cat [kernel.kallsyms] [k] copy_user_generic_string
13.48% cat [kernel.kallsyms] [k] memset
11.42% cat [kernel.kallsyms] [k] do_mpage_readpage
3.98% cat [kernel.kallsyms] [k] get_page_from_freelist
2.46% cat [kernel.kallsyms] [k] put_page
2.13% kswapd0 [kernel.kallsyms] [k] shrink_page_list
1.88% cat [kernel.kallsyms] [k] __radix_tree_lookup
1.67% cat [kernel.kallsyms] [k] __pagevec_lru_add_fn
1.39% kswapd0 [kernel.kallsyms] [k] free_pcppages_bulk
1.30% cat [kernel.kallsyms] [k] kfree
As you can see, the memcg footprint has shrunk quite a bit.
text data bss dec hex filename
37970 9892 400 48262 bc86 mm/memcontrol.o.old
35239 9892 400 45531 b1db mm/memcontrol.o
This patch (of 4):
The memcg charge API charges pages before they are rmapped - i.e. have an
actual "type" - and so every callsite needs its own set of charge and
uncharge functions to know what type is being operated on. Worse,
uncharge has to happen from a context that is still type-specific, rather
than at the end of the page's lifetime with exclusive access, and so
requires a lot of synchronization.
Rewrite the charge API to provide a generic set of try_charge(),
commit_charge() and cancel_charge() transaction operations, much like
what's currently done for swap-in:
mem_cgroup_try_charge() attempts to reserve a charge, reclaiming
pages from the memcg if necessary.
mem_cgroup_commit_charge() commits the page to the charge once it
has a valid page->mapping and PageAnon() reliably tells the type.
mem_cgroup_cancel_charge() aborts the transaction.
This reduces the charge API and enables subsequent patches to
drastically simplify uncharging.
As pages need to be committed after rmap is established but before they
are added to the LRU, page_add_new_anon_rmap() must stop doing LRU
additions again. Revive lru_cache_add_active_or_unevictable().
[hughd@google.com: fix shmem_unuse]
[hughd@google.com: Add comments on the private use of -EAGAIN]
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vladimir Davydov <vdavydov@parallels.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Oleg Nesterov [Fri, 8 Aug 2014 21:19:17 +0000 (14:19 -0700)]
vm_is_stack: use for_each_thread() rather then buggy while_each_thread()
Aleksei hit the soft lockup during reading /proc/PID/smaps. David
investigated the problem and suggested the right fix.
while_each_thread() is racy and should die, this patch updates
vm_is_stack().
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reported-by: Aleksei Besogonov <alex.besogonov@gmail.com>
Tested-by: Aleksei Besogonov <alex.besogonov@gmail.com>
Suggested-by: David Rientjes <rientjes@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joonsoo Kim [Fri, 8 Aug 2014 21:19:15 +0000 (14:19 -0700)]
Revert "slab: remove BAD_ALIEN_MAGIC"
This reverts commit
a640616822b2 ("slab: remove BAD_ALIEN_MAGIC").
commit
a640616822b2 ("slab: remove BAD_ALIEN_MAGIC") assumes that the
system with !CONFIG_NUMA has only one memory node. But, it turns out to
be false by the report from Geert. His system, m68k, has many memory
nodes and is configured in !CONFIG_NUMA. So it couldn't boot with above
change.
Here goes his failure report.
With latest mainline, I'm getting a crash during bootup on m68k/ARAnyM:
enable_cpucache failed for radix_tree_node, error 12.
kernel BUG at /scratch/geert/linux/linux-m68k/mm/slab.c:1522!
*** TRAP #7 *** FORMAT=0
Current process id is 0
BAD KERNEL TRAP:
00000000
Modules linked in:
PC: [<
0039c92c>] kmem_cache_init_late+0x70/0x8c
SR: 2200 SP:
00345f90 a2:
0034c2e8
d0:
0000003d d1:
00000000 d2:
00000000 d3:
003ac942
d4:
00000000 d5:
00000000 a0:
0034f686 a1:
0034f682
Process swapper (pid: 0, task=
0034c2e8)
Frame format=0
Stack from
00345fc4:
002f69ef 002ff7e5 000005f2 000360fa 0017d806 003921d4 00000000
00000000 00000000 00000000 00000000 00000000 003ac942 00000000
003912d6
Call Trace: [<
000360fa>] parse_args+0x0/0x2ca
[<
0017d806>] strlen+0x0/0x1a
[<
003921d4>] start_kernel+0x23c/0x428
[<
003912d6>] _sinittext+0x2d6/0x95e
Code: f7e5 4879 002f 69ef 61ff ffca 462a 4e47 <4879> 0035 4b1c 61ff
fff0 0cc4 7005 23c0 0037 fd20 588f 265f 285f 4e75 48e7 301c
Disabling lock debugging due to kernel taint
Kernel panic - not syncing: Attempted to kill the idle task!
Although there is a alternative way to fix this issue such as disabling
use of alien cache on !CONFIG_NUMA, but, reverting issued commit is better
to me in this time.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Vladimir Davydov <vdavydov@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Thu, 7 Aug 2014 16:02:26 +0000 (09:02 -0700)]
Merge tag 'microblaze-3.17-rc1' of git://git.monstr.eu/linux-2.6-microblaze
Pull microblaze updates from Michal Simek:
- add new syscall and fix comment
- fix udelay implementation
- fix libgcc for modules
* tag 'microblaze-3.17-rc1' of git://git.monstr.eu/linux-2.6-microblaze:
microblaze: Change libgcc-style functions from lib-y to obj-y
microblaze: Wire-up renameat2 syscall
microblaze: Add syscall number comment
microblaze: delay.h fix udelay and ndelay for 8 bit args
Linus Torvalds [Thu, 7 Aug 2014 16:01:25 +0000 (09:01 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/egtvedt/linux-avr32
Pull avr32 fix from Hans-Christian Egtvedt.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32:
avr32: fix error return code
Linus Torvalds [Thu, 7 Aug 2014 15:50:34 +0000 (08:50 -0700)]
Merge branch 'next' of git://git./linux/kernel/git/benh/powerpc
Pull powerpc updates from Ben Herrenschmidt:
"This is the powerpc new goodies for 3.17. The short story:
The biggest bit is Michael removing all of pre-POWER4 processor
support from the 64-bit kernel. POWER3 and rs64. This gets rid of a
ton of old cruft that has been bitrotting in a long while. It was
broken for quite a few versions already and nobody noticed. Nobody
uses those machines anymore. While at it, he cleaned up a bunch of
old dusty cabinets, getting rid of a skeletton or two.
Then, we have some base VFIO support for KVM, which allows assigning
of PCI devices to KVM guests, support for large 64-bit BARs on
"powernv" platforms, support for HMI (Hardware Management Interrupts)
on those same platforms, some sparse-vmemmap improvements (for memory
hotplug),
There is the usual batch of Freescale embedded updates (summary in the
merge commit) and fixes here or there, I think that's it for the
highlights"
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (102 commits)
powerpc/eeh: Export eeh_iommu_group_to_pe()
powerpc/eeh: Add missing #ifdef CONFIG_IOMMU_API
powerpc: Reduce scariness of interrupt frames in stack traces
powerpc: start loop at section start of start in vmemmap_populated()
powerpc: implement vmemmap_free()
powerpc: implement vmemmap_remove_mapping() for BOOK3S
powerpc: implement vmemmap_list_free()
powerpc: Fail remap_4k_pfn() if PFN doesn't fit inside PTE
powerpc/book3s: Fix endianess issue for HMI handling on napping cpus.
powerpc/book3s: handle HMIs for cpus in nap mode.
powerpc/powernv: Invoke opal call to handle hmi.
powerpc/book3s: Add basic infrastructure to handle HMI in Linux.
powerpc/iommu: Fix comments with it_page_shift
powerpc/powernv: Handle compound PE in config accessors
powerpc/powernv: Handle compound PE for EEH
powerpc/powernv: Handle compound PE
powerpc/powernv: Split ioda_eeh_get_state()
powerpc/powernv: Allow to freeze PE
powerpc/powernv: Enable M64 aperatus for PHB3
powerpc/eeh: Aux PE data for error log
...
Linus Torvalds [Thu, 7 Aug 2014 15:47:00 +0000 (08:47 -0700)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle:
"This is the main pull request for 3.17. It contains:
- misc Cavium Octeon, BCM47xx, BCM63xx and Alchemy updates
- MIPS ptrace updates and cleanups
- various fixes that will also go to -stable
- a number of cleanups and small non-critical fixes.
- NUMA support for the Loongson 3.
- more support for MSA
- support for MAAR
- various FP enhancements and fixes"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (139 commits)
MIPS: jz4740: remove unnecessary null test before debugfs_remove
MIPS: Octeon: remove unnecessary null test before debugfs_remove_recursive
MIPS: ZBOOT: implement stack protector in compressed boot phase
MIPS: mipsreg: remove duplicate MIPS_CONF4_FTLBSETS_SHIFT
MIPS: Bonito64: remove a duplicate define
MIPS: Malta: initialise MAARs
MIPS: Initialise MAARs
MIPS: detect presence of MAARs
MIPS: define MAAR register accessors & bits
MIPS: mark MSA experimental
MIPS: Don't build MSA support unless it can be used
MIPS: consistently clear MSA flags when starting & copying threads
MIPS: 16 byte align MSA vector context
MIPS: disable preemption whilst initialising MSA
MIPS: ensure MSA gets disabled during boot
MIPS: fix read_msa_* & write_msa_* functions on non-MSA toolchains
MIPS: fix MSA context for tasks which don't use FP first
MIPS: init upper 64b of vector registers when MSA is first used
MIPS: save/disable MSA in lose_fpu
MIPS: preserve scalar FP CSR when switching vector context
...
Linus Torvalds [Thu, 7 Aug 2014 15:41:00 +0000 (08:41 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/s390/linux
Pull s390 updates from Martin Schwidefsky:
"Mostly cleanups and bug-fixes, with two exceptions.
The first is lazy flushing of I/O-TLBs for PCI to improve performance,
the second is software dirty bits in the pmd for the madvise-free
implementation"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (24 commits)
s390/locking: Reenable optimistic spinning
s390/mm: implement dirty bits for large segment table entries
KVM: s390/mm: Fix page table locking vs. split pmd lock
s390/dasd: fix camel case
s390/3215: fix hanging console issue
s390/irq: improve displayed interrupt order in /proc/interrupts
s390/seccomp: fix error return for filtered system calls
s390/pci: introduce lazy IOTLB flushing for DMA unmap
dasd: fix error recovery for alias devices during format
dasd: fix list_del corruption during format
dasd: fix unresponsive device during format
dasd: use aliases for formatted devices during format
s390/pci: fix kmsg component
s390/kdump: Return NOTIFY_OK for all actions other than MEM_GOING_OFFLINE
s390/watchdog: Fix module name in Kconfig help text
s390/dasd: replace seq_printf by seq_puts
s390/dasd: replace pr_warning by pr_warn
s390/dasd: Move EXPORT_SYMBOL after function/variable
s390/dasd: remove unnecessary null test before debugfs_remove
s390/zfcp: use qdio buffer helpers
...
Julia Lawall [Thu, 7 Aug 2014 12:49:05 +0000 (14:49 +0200)]
avr32: fix error return code
Convert a zero return value on error to a negative one, as returned
elsewhere in the function.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
identifier ret; expression e1,e2;
@@
(
if (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Linus Torvalds [Thu, 7 Aug 2014 04:14:42 +0000 (21:14 -0700)]
Merge branch 'akpm' (patchbomb from Andrew Morton)
Merge incoming from Andrew Morton:
- Various misc things.
- arch/sh updates.
- Part of ocfs2. Review is slow.
- Slab updates.
- Most of -mm.
- printk updates.
- lib/ updates.
- checkpatch updates.
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (226 commits)
checkpatch: update $declaration_macros, add uninitialized_var
checkpatch: warn on missing spaces in broken up quoted
checkpatch: fix false positives for --strict "space after cast" test
checkpatch: fix false positive MISSING_BREAK warnings with --file
checkpatch: add test for native c90 types in unusual order
checkpatch: add signed generic types
checkpatch: add short int to c variable types
checkpatch: add for_each tests to indentation and brace tests
checkpatch: fix brace style misuses of else and while
checkpatch: add --fix option for a couple OPEN_BRACE misuses
checkpatch: use the correct indentation for which()
checkpatch: add fix_insert_line and fix_delete_line helpers
checkpatch: add ability to insert and delete lines to patch/file
checkpatch: add an index variable for fixed lines
checkpatch: warn on break after goto or return with same tab indentation
checkpatch: emit a warning on file add/move/delete
checkpatch: add test for commit id formatting style in commit log
checkpatch: emit fewer kmalloc_array/kcalloc conversion warnings
checkpatch: improve "no space after cast" test
checkpatch: allow multiple const * types
...
Linus Torvalds [Thu, 7 Aug 2014 04:06:02 +0000 (21:06 -0700)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
"This fixes the most immediate fallout from yesterday's networking
merge:
1) sock_tx_timestamp() must not clear the passed in tx_flags, but
rather add to them. Fix from Eric Dumazet.
2) The hyperv driver sendbuf region increase needs to be decreased
slightly to handle older backends. From KY Srinivasan.
3) Fix RCU lockdep splats in netlink diag after recent hashing
changes, from Thomas Graf.
4) The new IPV6_FLOWLABEL was given a socket option number that
overlapped with an existing IP6 tables one, breaking ip6_tables.
Fixed by Pablo Neira Ayuso"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
netlink: hold nl_sock_hash_lock during diag dump
tcp: md5: check md5 signature without socket lock
net: fix USB network driver config option.
net: reallocate new socket option number for IPV6_AUTOFLOWLABEL
vmxnet3: fix decimal printf format specifiers prefixed with 0x
net-timestamp: cumulative tcp timestamping fixes
hyperv: Adjust the size of sendbuf region to support ws2008r2
cxgb4: Fix for SR-IOV VF initialization
net-timestamp: sock_tx_timestamp() fix
Linus Torvalds [Thu, 7 Aug 2014 04:03:53 +0000 (21:03 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/trivial
Pull trivial tree changes from Jiri Kosina:
"Summer edition of trivial tree updates"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (23 commits)
doc: fix two typos in watchdog-api.txt
irq-gic: remove file name from heading comment
MAINTAINERS: Add miscdevice.h to file list for char/misc drivers.
scsi: mvsas: mv_sas.c: Fix for possible null pointer dereference
doc: replace "practise" with "practice" in Documentation
befs: remove check for CONFIG_BEFS_RW
scsi: doc: fix 'SCSI_NCR_SETUP_MASTER_PARITY'
drivers/usb/phy/phy.c: remove a leading space
mfd: fix comment
cpuidle: fix comment
doc: hpfall.c: fix missing null-terminate after strncpy call
usb: doc: hotplug.txt code typos
kbuild: fix comment in Makefile.modinst
SH: add proper prompt to SH_MAGIC_PANEL_R2_VERSION
ARM: msm: Remove MSM_SCM
crypto: Remove MPILIB_EXTRA
doc: CN: remove dead link, kerneltrap.org no longer works
media: update reference, kerneltrap.org no longer works
hexagon: update reference, kerneltrap.org no longer works
doc: LSM: update reference, kerneltrap.org no longer works
...
Linus Torvalds [Thu, 7 Aug 2014 03:56:28 +0000 (20:56 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/hid
Pull HID updates from Jiri Kosina:
"Some highlights:
- hid-sony improvements of Sixaxis device support by Antonio Ospite
- hid-hyperv driven devices can now be used as wakeup source, by
Dexuan Cui
- hid-lenovo driver is now more generic and supports more devices, by
Jamie Lentin
- hid-huion now supports wider range of tablets, by Nikolai
Kondrashov
- other various unsorted fixes and device ID additions"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (30 commits)
HID: hyperv: register as a wakeup source
HID: sony: Default initialize all elements of the LED max_brightness array to 1
HID: huion: Fix sparse warnings
HID: usbhid: Use flag HID_DISCONNECTED when a usb device is removed
HID: ignore jabra gn9350e
HID: cp2112: add I2C mode
HID: use multi input quirk for 22b9:2968
HID: rmi: only bind the hid-rmi driver to the mouse interface of composite USB devices
HID: rmi: check that report ids exist in the report_id_hash before accessing their size
HID: lenovo: Add support for Compact (BT|USB) keyboard
HID: lenovo: Don't call function in condition, show error codes
HID: lenovo: Prepare support for adding other devices
HID: lenovo: Rename hid-lenovo-tpkbd to hid-lenovo
HID: huion: Handle tablets with UC-Logic vendor ID
HID: huion: Switch to generating report descriptor
HID: huion: Don't ignore other interfaces
HID: huion: Use "tablet" instead of specific model
HID: add quirk for 0x04d9:0xa096 device
HID: i2c-hid: call the hid driver's suspend and resume callbacks
HID: rmi: change logging level of log messages related to unexpected reports
...
Linus Torvalds [Thu, 7 Aug 2014 03:54:47 +0000 (20:54 -0700)]
Merge git://www.linux-watchdog.org/linux-watchdog
Pull watchdog updates from Wim Van Sebroeck:
- remove unnecessary checks after platform_get_resource()
- fix watchdog api documentation typo's
- imx2_wdt: adds big endianness support
- move restart code to the sunxi watchdog driver
* git://www.linux-watchdog.org/linux-watchdog:
wdt: sunxi: Move restart code to the watchdog driver
Documentation: fix two typos in watchdog-api.txt
watchdog: imx2_wdt: adds big endianness support.
watchdog: shwdt: Remove the unnecessary check of resource after platform_get_resource()
watchdog: lantiq_wdt: Remove the un-necessary check of resource after platform_get_resource()
watchdog: dw_wdt: Remove the un-necessary check after platform_get_resource()
Linus Torvalds [Thu, 7 Aug 2014 03:34:19 +0000 (20:34 -0700)]
Merge tag 'pm+acpi-3.17-rc1' of git://git./linux/kernel/git/rafael/linux-pm
Pull ACPI and power management updates from Rafael Wysocki:
"Again, ACPICA leads the pack (47 commits), followed by cpufreq (18
commits) and system suspend/hibernation (9 commits).
From the new code perspective, the ACPICA update brings ACPI 5.1 to
the table, including a new device configuration object called _DSD
(Device Specific Data) that will hopefully help us to operate device
properties like Device Trees do (at least to some extent) and changes
related to supporting ACPI on ARM.
Apart from that we have hibernation changes making it use radix trees
to store memory bitmaps which should speed up some operations carried
out by it quite significantly. We also have some power management
changes related to suspend-to-idle (the "freeze" sleep state) support
and more preliminary changes needed to support ACPI on ARM (outside of
ACPICA).
The rest is fixes and cleanups pretty much everywhere.
Specifics:
- ACPICA update to upstream version
20140724. That includes ACPI 5.1
material (support for the _CCA and _DSD predefined names, changes
related to the DMAR and PCCT tables and ARM support among other
things) and cleanups related to using ACPICA's header files. A
major part of it is related to acpidump and the core code used by
that utility. Changes from Bob Moore, David E Box, Lv Zheng,
Sascha Wildner, Tomasz Nowicki, Hanjun Guo.
- Radix trees for memory bitmaps used by the hibernation core from
Joerg Roedel.
- Support for waking up the system from suspend-to-idle (also known
as the "freeze" sleep state) using ACPI-based PCI wakeup signaling
(Rafael J Wysocki).
- Fixes for issues related to ACPI button events (Rafael J Wysocki).
- New device ID for an ACPI-enumerated device included into the
Wildcat Point PCH from Jie Yang.
- ACPI video updates related to backlight handling from Hans de Goede
and Linus Torvalds.
- Preliminary changes needed to support ACPI on ARM from Hanjun Guo
and Graeme Gregory.
- ACPI PNP core cleanups from Arjun Sreedharan and Zhang Rui.
- Cleanups related to ACPI_COMPANION() and ACPI_HANDLE() macros
(Rafael J Wysocki).
- ACPI-based device hotplug cleanups from Wei Yongjun and Rafael J
Wysocki.
- Cleanups and improvements related to system suspend from Lan
Tianyu, Randy Dunlap and Rafael J Wysocki.
- ACPI battery cleanup from Wei Yongjun.
- cpufreq core fixes from Viresh Kumar.
- Elimination of a deadband effect from the cpufreq ondemand governor
and intel_pstate driver cleanups from Stratos Karafotis.
- 350MHz CPU support for the powernow-k6 cpufreq driver from Mikulas
Patocka.
- Fix for the imx6 cpufreq driver from Anson Huang.
- cpuidle core and governor cleanups from Daniel Lezcano, Sandeep
Tripathy and Mohammad Merajul Islam Molla.
- Build fix for the big_little cpuidle driver from Sachin Kamat.
- Configuration fix for the Operation Performance Points (OPP)
framework from Mark Brown.
- APM cleanup from Jean Delvare.
- cpupower utility fixes and cleanups from Peter Senna Tschudin,
Andrey Utkin, Himangi Saraogi, Rickard Strandqvist, Thomas
Renninger"
* tag 'pm+acpi-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (118 commits)
ACPI / LPSS: add LPSS device for Wildcat Point PCH
ACPI / PNP: Replace faulty is_hex_digit() by isxdigit()
ACPICA: Update version to
20140724.
ACPICA: ACPI 5.1: Update for PCCT table changes.
ACPICA/ARM: ACPI 5.1: Update for GTDT table changes.
ACPICA/ARM: ACPI 5.1: Update for MADT changes.
ACPICA/ARM: ACPI 5.1: Update for FADT changes.
ACPICA: ACPI 5.1: Support for the _CCA predifined name.
ACPICA: ACPI 5.1: New notify value for System Affinity Update.
ACPICA: ACPI 5.1: Support for the _DSD predefined name.
ACPICA: Debug object: Add current value of Timer() to debug line prefix.
ACPICA: acpihelp: Add UUID support, restructure some existing files.
ACPICA: Utilities: Fix local printf issue.
ACPICA: Tables: Update for DMAR table changes.
ACPICA: Remove some extraneous printf arguments.
ACPICA: Update for comments/formatting. No functional changes.
ACPICA: Disassembler: Add support for the ToUUID opererator (macro).
ACPICA: Remove a redundant cast to acpi_size for ACPI_OFFSET() macro.
ACPICA: Work around an ancient GCC bug.
ACPI / processor: Make it possible to get local x2apic id via _MAT
...
Linus Torvalds [Thu, 7 Aug 2014 03:10:32 +0000 (20:10 -0700)]
Merge tag 'scsi-misc' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"This patch set consists of the usual driver updates (ufs, storvsc,
pm8001 hpsa). It also has removal of the user space target driver
code (everyone is using LIO now), a partial PCI MSI-X update, more
multi-queue updates, conversion to 64 bit LUNs (so we could
theoretically cope with any LUN returned by a device) and placeholder
support for the ZBC device type (Shingle drives), plus an assortment
of minor updates and bug fixes"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (143 commits)
scsi: do not issue SCSI RSOC command to Promise Vtrak E610f
vmw_pvscsi: Use pci_enable_msix_exact() instead of pci_enable_msix()
pm8001: Fix invalid return when request_irq() failed
lpfc: Remove superfluous call to pci_disable_msix()
isci: Use pci_enable_msix_exact() instead of pci_enable_msix()
bfa: Use pci_enable_msix_exact() instead of pci_enable_msix()
bfa: Cleanup bfad_setup_intr() function
bfa: Do not call pci_enable_msix() after it failed once
fnic: Use pci_enable_msix_exact() instead of pci_enable_msix()
scsi: use short driver name for per-driver cmd slab caches
scsi_debug: support scsi-mq, queues and locks
Drivers: add blist flags
scsi: ufs: fix endianness sparse warnings
scsi: ufs: make undeclared functions static
bnx2i: Update driver version to 2.7.10.1
pm8001: fix a memory leak in nvmd_resp
pm8001: fix update_flash
pm8001: fix a memory leak in flash_update
pm8001: Cleaning up uninitialized variables
pm8001: Fix to remove null pointer checks that could never happen
...
Linus Torvalds [Thu, 7 Aug 2014 03:07:24 +0000 (20:07 -0700)]
Merge tag 'sound-3.17-rc1' of git://git./linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"There've been many updates in ASoC side at this time, especially the
framework enhancement for multiple CODECs on a single DAI and more
componentization works.
The only major change in ALSA core is the addition of timestamp type
in sw_params field. This should behave in backward compatible way.
Other than that, there are lots of small changes and new drivers in
wide range, including a large code cut in HD-audio driver for
deprecated static quirks. Some highlights are below:
ALSA Core:
- Add the new timestamp type field to sw_params to choose
MONOTONIC_RAW type
HD-audio:
- Continued conversion to standard printk macros, generic code
cleanups
- Removal of obsoleted static quirk codes for Conexant and C-Media
codecs
- Fixups for HP Envy TS, Dell XPS 15, HP and Dell mute/mic LED,
Gigabyte BXBT-2807 mobo
- Intel Braswell support
ASoC:
- Support for multiple CODECs attached to a single DAI, enabling
systems with for example multiple DAC/speaker drivers on a single
link, contributed by Benoit Cousson based on work from Misael Lopez
Cruz
- Support for byte controls larger than 256 bytes based on the use of
TLVs contributed by Omair Mohammed Abdullah
- More componentisation work from Lars-Peter Clausen
- The remainder of the conversions of CODEC drivers to params_width()
by Mark Brown
- Drivers for Cirrus Logic CS4265, Freescale i.MX ASRC blocks,
Realtek RT286 and RT5670, Rockchip RK3xxx I2S controllers and Texas
Instruments TAS2552
- Lots of updates and fixes, especially to the DaVinci, Intel,
Freescale, Realtek, and rcar drivers"
* tag 'sound-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (402 commits)
ALSA: usb-audio: Whitespace cleanups for sound/usb/midi.*
ALSA: usb-audio: Respond to suspend and resume callbacks for MIDI input
sound/oss/pss: Remove typedefs pss_mixerdata and pss_confdata
sound/oss/opl3: Remove typedef opl_devinfo
ALSA: fireworks: fix specifiers in format strings for propper output
ASoC: imx-audmux: Use uintptr_t for port numbers
ASoC: davinci: Enable menuconfig entry for McASP
ASoC: fsl_asrc: Don't access members of config before checking it
ASoC: fsl_sarc_dma: Check pair before using it
ASoC: adau1977: Fix truncation warning on 64 bit architectures
ALSA: virtuoso: add Xonar Essence STX II support
ALSA: riptide: fix %d confusingly prefixed with 0x in format strings
ALSA: fireworks: fix %d confusingly prefixed with 0x in format strings
ALSA: hda - add codec ID for Braswell display audio codec
ALSA: hda - add PCI IDs for Intel Braswell
ALSA: usb-audio: Adjust Gamecom 780 volume level
ALSA: usb-audio: improve dmesg source grepability
ASoC: rt5670: Fix duplicate const warnings
ASoC: rt5670: Staticise non-exported symbols
ASoC: Intel: update stream only on stream IPC msgs
...
Linus Torvalds [Thu, 7 Aug 2014 03:06:14 +0000 (20:06 -0700)]
Merge tag 'hsi-for-3.17' of git://git./linux/kernel/git/sre/linux-hsi
Pull HSI changes from Sebastian Reichel:
"Misc fixes in SSI related drivers"
* tag 'hsi-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi:
HSI: omap_ssi: Fix return value check in ssi_debug_add_ctrl()
HSI: omap_ssi_port: Fix return value check in ssi_debug_add_port()
HSI: ssi_protocol: Fix sparse non static symbol warning
drivers/hsi/controllers/omap_ssi{,_port}.c: fix failure checks
Linus Torvalds [Thu, 7 Aug 2014 03:05:34 +0000 (20:05 -0700)]
Merge tag 'for-v3.17' of git://git.infradead.org/battery-2.6
Pull power supply changes from Sebastian Reichel:
- Added iPaq h3xxx battery driver
- Added Broadcom STB reset driver
- DT support for rx51-battery
- misc. fixes
* tag 'for-v3.17' of git://git.infradead.org/battery-2.6:
ipaq_micro_battery: fix sparse non static symbol warning
power: add driver for battery reading on iPaq h3xxx
power: twl4030_charger: detect battery presence prior to enabling charger
power: reset: Add reboot driver for brcmstb
power_supply: Fix sparse non static symbol warning
power_supply: Add inlmt,iterm, min/max temp props
charger: tps65090: Allow charger module to be used when no irq
power/reset: Fix GPL v2 license string typo
power: poweroff: gpio: convert to use descriptors
bq27000: report missing device better.
bq27x00_battery: Introduce the use of the managed version of kzalloc
Documentation: DT: Document rx51-battery binding
rx51_battery: convert to iio consumer
bq2415x_charger: Fix Atomic Sleep Bug
Gavin Shan [Thu, 7 Aug 2014 02:47:16 +0000 (12:47 +1000)]
powerpc/eeh: Export eeh_iommu_group_to_pe()
The function is used by VFIO driver, which might be built as a
dynamic module. So it should be exported.
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Thomas Graf [Wed, 6 Aug 2014 23:18:47 +0000 (00:18 +0100)]
netlink: hold nl_sock_hash_lock during diag dump
Although RCU protection would be possible during diag dump, doing
so allows for concurrent table mutations which can render the
in-table offset between individual Netlink messages invalid and
thus cause legitimate sockets to be skipped in the dump.
Since the diag dump is relatively low volume and consistency is
more important than performance, the table mutex is held during
dump.
Reported-by: Andrey Wagin <avagin@gmail.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Fixes:
e341694e3eb57fc ("netlink: Convert netlink_lookup() to use RCU protected hash table")
Signed-off-by: David S. Miller <davem@davemloft.net>
Joe Perches [Wed, 6 Aug 2014 23:11:31 +0000 (16:11 -0700)]
checkpatch: update $declaration_macros, add uninitialized_var
Using uninitialized_var reports a false positive for "Missing blank line
after declarations".
Fix it by adding uninitialized_var to the $declaration_macros exceptions
list.
Move the macro list after $Type is declared.
Add optional prefixes to DECLARE_<FOO> and DEFINE_<BAR>
macro declarations to allow forms like:
MLX4_DECLARE_DOORBELL_LOCK
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Dotan Barak <dotanb@mellanox.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dan Carpenter [Wed, 6 Aug 2014 23:11:29 +0000 (16:11 -0700)]
checkpatch: warn on missing spaces in broken up quoted
Checkpatch already complains when people break up quoted strings but
it's still pretty common. One mistake that people often make is they
leave out the space character between the two strings.
This check adds around 450 new warnings and has a low rate of false
positives.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Andy Whitcroft <apw@canonical.com>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:11:27 +0000 (16:11 -0700)]
checkpatch: fix false positives for --strict "space after cast" test
Commit
89da401f6cff ("checkpatch: improve "no space after cast" test")
in -next improved the cast test for non pointer types, but also
introduced false positives for some types of static inlines.
Add a test for an open brace to the exclusions to avoid these false
positives.
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Hartley Sweeten <HartleyS@visionengravers.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:11:25 +0000 (16:11 -0700)]
checkpatch: fix false positive MISSING_BREAK warnings with --file
Using --file mode can give false positives with MISSING_BREAK
fall-through warnings on simple but long multiple consecutive case
statements.
Look for all lines before a case statement for a switch or a statement
when using --file mode.
Fix a misspelling of preceded while there.
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:11:22 +0000 (16:11 -0700)]
checkpatch: add test for native c90 types in unusual order
c90 section "6.7.2 Type Specifiers" says:
"type specifiers may occur in any order"
That means that:
short int is the same as int short
unsigned short int is the same as int unsigned short
etc...
checkpatch currently parses only a subset of these allowed types.
For instance: "unsigned short" and "signed short" are found by
checkpatch as a specific type, but none of the or "int short" or "int
signed short" variants are found.
Add another table for the "kernel style misordered" variants.
Add this misordered table to the findable types.
Warn when the misordered style is used.
This improves the "Missing a blank line after declarations" test as it
depends on the correct parsing of the $Declare variable which looks for
"$Type $Ident;" (ie: declarations like "int foo;").
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:11:20 +0000 (16:11 -0700)]
checkpatch: add signed generic types
Current generic types are unsigned or unspecified. Add signed to the
types.
Reorder the types to find the longest match first.
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:11:18 +0000 (16:11 -0700)]
checkpatch: add short int to c variable types
short int is one of the 6.7.2 c90 types.
Find it appropriately.
This fixes a defect in checkpatch where it suggests that a line break
after declaration is required using an input like:
int foo;
short int bar;
Without this change, it warns on the short int line.
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Hartley Sweeten <HartleyS@visionengravers.com>
Acked-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:11:16 +0000 (16:11 -0700)]
checkpatch: add for_each tests to indentation and brace tests
All the various for_each loop macros were not tested for trailing brace
on the following lines and for bad indentation.
Add them.
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Greg KH <gregkh@linuxfoundation.org>
Cc: Andy Whitcroft <apw@canonical.com
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:11:14 +0000 (16:11 -0700)]
checkpatch: fix brace style misuses of else and while
Add --fix corrections for ELSE_AFTER_BRACE and WHILE_AFTER_BRACE
misuses.
if (x) {
...
}
else {
...
}
is corrected to
if (x) {
...
} else {
...
}
and
do {
...
}
while (x);
is corrected to
do {
...
} while (x);
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:11:12 +0000 (16:11 -0700)]
checkpatch: add --fix option for a couple OPEN_BRACE misuses
Style misuses of these types are corrected:
typedef struct foo
{
int bar;
};
int foo(int bar) { return bar+1;
}
int foo(int bar) {
return bar+1;
}
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:11:10 +0000 (16:11 -0700)]
checkpatch: use the correct indentation for which()
I copied the which subroutine from get_maintainer.pl.
Unfortunately, get_maintainer uses a 4 space indentation so use the
proper tab indentation instead.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:11:07 +0000 (16:11 -0700)]
checkpatch: add fix_insert_line and fix_delete_line helpers
Neaten the uses of patch/file line insertions or deletions. Hide the
mechanism used.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:11:05 +0000 (16:11 -0700)]
checkpatch: add ability to insert and delete lines to patch/file
This can be valuable to insert or delete blank lines as well as fix
misplaced brace or else uses.
Store indexes of lines to be added/deleted and the new lines.
When creating the --fix file, insert or delete the appropriate lines and
update the patch range information.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:11:03 +0000 (16:11 -0700)]
checkpatch: add an index variable for fixed lines
Make the fix code a bit easier to read.
This should also start to allow an easier mechanism to insert/delete
lines eventually too.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:11:01 +0000 (16:11 -0700)]
checkpatch: warn on break after goto or return with same tab indentation
Using break; after a goto or return is unnecessary so emit a warning
when the break is at the same indent level.
So this emits a warning on:
switch (foo) {
case 1:
goto err;
break;
}
but not on:
switch (foo) {
case 1:
if (bar())
goto err;
break;
}
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:10:59 +0000 (16:10 -0700)]
checkpatch: emit a warning on file add/move/delete
Whenever files are added, moved, or deleted, the MAINTAINERS file
patterns can be out of sync or outdated.
To try to keep MAINTAINERS more up-to-date, add a one-time warning
whenever a patch does any of those.
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:10:57 +0000 (16:10 -0700)]
checkpatch: add test for commit id formatting style in commit log
Commit logs have various forms of commit id references.
Try to standardize on a 12 character long lower case commit id along
with a description of parentheses and the quoted subject line.
ie: commit
0123456789ab ("commit description")
If git and a git tree exists, look up the commit id and emit the
appropriate line as part of the message.
Signed-off-by: Joe Perches <joe@perches.com>
Requested-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:10:55 +0000 (16:10 -0700)]
checkpatch: emit fewer kmalloc_array/kcalloc conversion warnings
Avoid matching allocs that appear to be known small multiplications of a
sizeof with a constant because gcc as of 4.8 cannot optimize the code in
a calloc() exactly the same way as an alloc().
Look for numeric constants or what appear to be upper case only macro
#defines.
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Theodore Ts'o <tytso@mit.edu>
Original-patch-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:10:52 +0000 (16:10 -0700)]
checkpatch: improve "no space after cast" test
This --strict test previously worked only for what appeared to be cast
to pointer types.
Make it work for all casts.
Also, there's no reason to show the previous line for this type of
message, so don't.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:10:50 +0000 (16:10 -0700)]
checkpatch: allow multiple const * types
checkpatch's $Type variable does not match declarations of multiple
const * types.
This can produce false positives for things like:
$ ./scripts/checkpatch.pl -f drivers/staging/comedi/comedidev.h
WARNING: Missing a blank line after declarations
#60: FILE: drivers/staging/comedi/comedidev.h:60:
+ const struct comedi_lrange *range_table;
+ const struct comedi_lrange *const *range_table_list;
Fix the $Type variable to support matching multiple "* const" uses.
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Hartley Sweeten <HartleyS@visionengravers.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:10:48 +0000 (16:10 -0700)]
checkpatch: warn on unnecessary parentheses around references of foo->bar
Parentheses around &(foo->bar) and *(foo->bar) are unnecessary. Emit a
--strict only message on these uses.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:10:46 +0000 (16:10 -0700)]
checkpatch: quiet Kconfig help message checking
Editing Kconfig dependencies can emit unnecessary messages about missing
or too short help entries.
Only emit the message when adding help sections to Kconfig files.
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Jean Delvare <jdelvare@suse.de>
Tested-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:10:44 +0000 (16:10 -0700)]
checkpatch: change blank line after declaration type to "LINE_SPACING"
Make it consistent with the other missing or multiple blank line tests.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:10:42 +0000 (16:10 -0700)]
checkpatch: add a multiple blank lines test
Multiple consecutive blank lines waste screen space. Emit a --strict
only message with these blank lines.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:10:39 +0000 (16:10 -0700)]
checkpatch: add test for blank lines after function/struct/union/enum
Add a --strict test asking for a blank line after
function/struct/union/enum declarations.
Allow exceptions for several attributes and macro uses.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:10:37 +0000 (16:10 -0700)]
checkpatch.pl: also suggest 'else if' when if follows brace
This might help a kernel hacker think twice before blindly adding a
newline.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:10:35 +0000 (16:10 -0700)]
checkpatch: ignore email headers better
There are some patches created by git format-patch that when scanned by
checkpatch report errors on lines like
To: address.tld
This is a checkpatch false positive.
Improve the logic a bit to ignore folded email headers to avoid emitting
these messages.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:10:33 +0000 (16:10 -0700)]
checkpatch: fix function pointers in blank line needed after declarations test
Add a function pointer declaration check to the test for blank line
needed after declarations.
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Bruce W Allan <bruce.w.allan@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:10:31 +0000 (16:10 -0700)]
checkpatch: fix complex macro false positive for escaped constant char
A single escaped constant char is not a complex macro.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:10:29 +0000 (16:10 -0700)]
checkpatch: warn on unnecessary else after return or break
Using an else following a break or return can unnecessarily indent code
blocks.
ie:
for (i = 0; i < 100; i++) {
int foo = bar();
if (foo < 1)
break;
else
usleep(1);
}
is generally better written as:
for (i = 0; i < 100; i++) {
int foo = bar();
if (foo < 1)
break;
usleep(1);
}
Warn when a bare else statement is preceded by a break or return
indented 1 tab more than the else.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:10:27 +0000 (16:10 -0700)]
checkpatch: attempt to find unnecessary 'out of memory' messages
Logging messages that show some type of "out of memory" error are
generally unnecessary as there is a generic message and a stack dump
done by the memory subsystem.
These messages generally increase kernel size without much added value.
Emit a warning on these types of messages.
This test looks for any inserted message function, then looks at the
previous line for an "if (!foo)" or "if (foo == NULL)" test and then
looks at the preceding statement for an allocation function like "foo =
kmalloc()"
ie: this code matches:
foo = kmalloc();
if (foo == NULL) {
printk("Out of memory\n");
return -ENOMEM;
}
This test is very crude and incomplete.
This test can miss quite a lot of of OOM messages that do not have this
specific form.
ie: this code does not match:
foo = kmalloc();
if (!foo) {
rtn = -ENOMEM;
printk("Out of memory!\n");
goto out;
}
This test could also be a false positive when the logging message itself
does not specify anything about memory, but I did not find any false
positives in my limited testing.
spatch could be a better solution but correctness seems non-trivial for
that tool too.
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:10:24 +0000 (16:10 -0700)]
lib: bitmap: add missing mask in bitmap_andnot
Apparently, bitmap_andnot is supposed to return whether the new bitmap
is empty. But it didn't take potential garbage bits in the last word
into account.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:10:22 +0000 (16:10 -0700)]
lib: bitmap: add missing mask in bitmap_and
Apparently, bitmap_and is supposed to return whether the new bitmap is
empty. But it didn't take potential garbage bits in the last word into
account.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:10:20 +0000 (16:10 -0700)]
lib: bitmap: add missing mask in bitmap_shift_right
There is no guarantee that *src does not contain garbage bits outside
the lower nbits, so we need to mask it before the shift-and-assign.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:10:18 +0000 (16:10 -0700)]
lib: bitmap: micro-optimize bitmap_allocate_region
__reg_op(..., REG_OP_ALLOC) always returns 0, so we might as well use that
and save an instruction.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:10:16 +0000 (16:10 -0700)]
lib: bitmap: change parameter of bitmap_*_region to unsigned
Changing the pos parameter of __reg_op to unsigned allows the compiler
to generate slightly smaller and simpler code. Also update its callers
bitmap_*_region to receive and pass unsigned int. The return types of
bitmap_find_free_region and bitmap_allocate_region are still int to
allow a negative error code to be returned. An int is certainly capable
of representing any realistic return value.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:10:14 +0000 (16:10 -0700)]
lib: bitmap: fix typo in kerneldoc for bitmap_pos_to_ord
A few lines above, it was stated that positions for non-set bits are
mapped to -1, which is obviously also what the code does.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:10:12 +0000 (16:10 -0700)]
lib: bitmap: simplify bitmap_parselist
We want len to be the index of the first '\n', or the length of the
string if there is no newline. This is a good example of the usefulness
of strchrnul(). Use that instead, thus eliminating a branch and a call
to strlen().
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:10:10 +0000 (16:10 -0700)]
lib: bitmap: make the start index of bitmap_clear unsigned
The compiler can generate slightly smaller and simpler code when it
knows that "start" is non-negative.
Also, use the names "start" and "len" for the two parameters for
consistency with bitmap_set.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:10:07 +0000 (16:10 -0700)]
lib: bitmap: make the start index of bitmap_set unsigned
The compiler can generate slightly smaller and simpler code when it
knows that "start" is non-negative.
Also, use the names "start" and "len" for the two parameters in both
header file and implementation, instead of the previous mix.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:10:05 +0000 (16:10 -0700)]
lib: bitmap: make nbits parameter of bitmap_weight unsigned
The compiler can generate slightly smaller and simpler code when it
knows that "nbits" is non-negative. Since no-one passes a negative
bit-count, this shouldn't affect the semantics.
I didn't change the return type, since that might change the semantics
of some expression containing a call to bitmap_weight(). Certainly an
int is capable of holding the result.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:10:03 +0000 (16:10 -0700)]
lib: bitmap: make nbits parameter of bitmap_subset unsigned
The compiler can generate slightly smaller and simpler code when it
knows that "nbits" is non-negative. Since no-one passes a negative
bit-count, this shouldn't affect the semantics.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:10:01 +0000 (16:10 -0700)]
lib: bitmap: make nbits parameter of bitmap_intersects unsigned
The compiler can generate slightly smaller and simpler code when it
knows that "nbits" is non-negative. Since no-one passes a negative
bit-count, this shouldn't affect the semantics.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:09:59 +0000 (16:09 -0700)]
lib: bitmap: make nbits parameter of bitmap_{and,or,xor,andnot} unsigned
This change is only for consistency with the changes to the other
bitmap_* functions; it doesn't change the size of the generated code:
inside BITS_TO_LONGS there is a sizeof(long), which causes bits to be
interpreted as unsigned anyway.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:09:57 +0000 (16:09 -0700)]
lib: bitmap: remove unnecessary mask from bitmap_complement
Since the extra bits are "don't care", there is no reason to mask the
last word to the used bits when complementing. This shaves off yet a
few bytes.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:09:55 +0000 (16:09 -0700)]
lib: bitmap: make nbits parameter of bitmap_complement unsigned
The compiler can generate slightly smaller and simpler code when it
knows that "nbits" is non-negative. Since no-one passes a negative
bit-count, this shouldn't affect the semantics.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:09:53 +0000 (16:09 -0700)]
lib: bitmap: make nbits parameter of bitmap_equal unsigned
The compiler can generate slightly smaller and simpler code when it
knows that "nbits" is non-negative. Since no-one passes a negative
bit-count, this shouldn't affect the semantics.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:09:51 +0000 (16:09 -0700)]
lib: bitmap: make nbits parameter of bitmap_full unsigned
The compiler can generate slightly smaller and simpler code when it
knows that "nbits" is non-negative. Since no-one passes a negative
bit-count, this shouldn't affect the semantics.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:09:49 +0000 (16:09 -0700)]
lib: bitmap: make nbits parameter of bitmap_empty unsigned
Many functions in lib/bitmap.c start with an expression such as lim =
bits/BITS_PER_LONG. Since bits has type (signed) int, and since gcc
cannot know that it is in fact non-negative, it generates worse code
than it could. These patches, mostly consisting of changing various
parameters to unsigned, gives a slight overall code reduction:
add/remove: 1/1 grow/shrink: 8/16 up/down: 251/-414 (-163)
function old new delta
tick_device_uses_broadcast 335 425 +90
__irq_alloc_descs 498 554 +56
__bitmap_andnot 73 115 +42
__bitmap_and 70 101 +31
bitmap_weight - 11 +11
copy_hugetlb_page_range 752 762 +10
follow_hugetlb_page 846 854 +8
hugetlb_init 1415 1417 +2
hugetlb_nrpages_setup 130 131 +1
hugetlb_add_hstate 377 376 -1
bitmap_allocate_region 82 80 -2
select_task_rq_fair 2202 2191 -11
hweight_long 66 55 -11
__reg_op 230 219 -11
dm_stats_message 2849 2833 -16
bitmap_parselist 92 74 -18
__bitmap_weight 115 97 -18
__bitmap_subset 153 129 -24
__bitmap_full 128 104 -24
__bitmap_empty 120 96 -24
bitmap_set 179 149 -30
bitmap_clear 185 155 -30
__bitmap_equal 136 105 -31
__bitmap_intersects 148 108 -40
__bitmap_complement 109 67 -42
tick_device_setup_broadcast_func.isra 81 - -81
[The increases in __bitmap_and{,not} are due to bug fixes 17/18,18/18.
No idea why bitmap_weight suddenly appears.] While 163 bytes treewide is
insignificant, I believe the bitmap functions are often called with
locks held, so saving even a few cycles might be worth it.
While making these changes, I found a few other things that might be
worth including. 16,17,18 are actual bug fixes. The rest shouldn't
change the behaviour of any of the functions, provided no-one passed
negative nbits values. If something should come up, it should be fairly
bisectable.
A few issues I thought about, but didn't know what to do with:
* Many of the functions misbehave if nbits is compile-time 0; the
out-of-line functions generally handle 0 correctly. bitmap_fill() is
particularly bad, whether the 0 is known at compile time or not. It
would probably be nice to add detection of at least compile-time 0 and
handle that appropriately.
* I didn't change __bitmap_shift_{left,right} to use unsigned because I
want to fully understand why the algorithm works before making that
change. However, AFAICT, they behave correctly for all (positive) shift
amounts. This is not the case for the small_const_nbits versions. If
for example nbits = n = BITS_PER_LONG, the shift operators turn into
no-ops (at least on x86), so one get *dst = *src, whereas one would
expect to get *dst=0. That difference in behaviour is somewhat
annoying.
This patch (of 18):
The compiler can generate slightly smaller and simpler code when it
knows that "nbits" is non-negative. Since no-one passes a negative
bit-count, this shouldn't affect the semantics.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrew Morton [Wed, 6 Aug 2014 23:09:46 +0000 (16:09 -0700)]
lib/list_sort.c: convert to pr_foo
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: Don Mullis <don.mullis@gmail.com>
Cc: Dave Chinner <david@fromorbit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:09:44 +0000 (16:09 -0700)]
lib: list_sort.c: Limit number of unused cmp callbacks
The helper merge_and_restore_back_links() makes sure to call the
caller's cmp function during the final ->prev pointer fixup, so that the
cmp function may call cond_resched(). However, if the cmp function does
not call cond_resched() at all, this is entirely redundant. If it does,
doing at least two function calls for every two pointer assignments is a
bit excessive. This patch limits the calls to once for every 256
iterations.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: Don Mullis <don.mullis@gmail.com>
Cc: Dave Chinner <david@fromorbit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:09:42 +0000 (16:09 -0700)]
lib: list_sort_test(): simplify and harden cleanup
There is no reason to maintain the list structure while freeing the
debug elements. Aside from the redundant pointer manipulations, it is
also inefficient from a locality-of-reference viewpoint, since they are
visited in a random order (wrt. the order they were allocated).
Furthermore, if we jumped to exit: after detecting list corruption, it
is actually dangerous.
So just free the elements in the order they were allocated, using the
backing array elts. Allocate that using kcalloc(), so that if
allocation of one of the debug element fails, we just end up calling
kfree(NULL) for the trailing elements.
Minor details: Use sizeof(*elts) instead of sizeof(void *), and return
err immediately when allocation of elts fails, to avoid introducing
another label just before the final return statement.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: Don Mullis <don.mullis@gmail.com>
Cc: Dave Chinner <david@fromorbit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:09:40 +0000 (16:09 -0700)]
lib: list_sort_test(): add extra corruption check
Add a check to make sure that the prev pointer of the list head points
to the last element on the list.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: Don Mullis <don.mullis@gmail.com>
Cc: Dave Chinner <david@fromorbit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rasmus Villemoes [Wed, 6 Aug 2014 23:09:38 +0000 (16:09 -0700)]
lib: list_sort_test(): return -ENOMEM when allocation fails
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: Don Mullis <don.mullis@gmail.com>
Cc: Dave Chinner <david@fromorbit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joe Perches [Wed, 6 Aug 2014 23:09:36 +0000 (16:09 -0700)]
kernel.h: remove deprecated pack_hex_byte
It's been nearly 3 years now since commit
55036ba76b2d ("lib: rename
pack_hex_byte() to hex_byte_pack()") so it's time to remove this
deprecated and unused static inline.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fabian Frederick [Wed, 6 Aug 2014 23:09:33 +0000 (16:09 -0700)]
lib/test-kstrtox.c: use ARRAY_SIZE instead of sizeof/sizeof[0]
Use kernel.h definition.
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mathias Krause [Wed, 6 Aug 2014 23:09:31 +0000 (16:09 -0700)]
lib/string_helpers.c: constify static arrays
Complement commit
68aecfb97978 ("lib/string_helpers.c: make arrays
static") by making the arrays const -- not only pointing to const
strings. This moves them out of the data section to the r/o data
section:
text data bss dec hex filename
1150 176 0 1326 52e lib/string_helpers.old.o
1326 0 0 1326 52e lib/string_helpers.new.o
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Gui Hecheng [Wed, 6 Aug 2014 23:09:29 +0000 (16:09 -0700)]
lib/cmdline.c: add size unit t/p/e to memparse
For modern filesystems such as btrfs, t/p/e size level operations are
common. add size unit t/p/e parsing to memparse
Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Reviewed-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
George Spelvin [Wed, 6 Aug 2014 23:09:27 +0000 (16:09 -0700)]
libata: Use glob_match from lib/glob.c
The function may be useful for other drivers, so export it. (Suggested
by Tejun Heo.)
Note that I inverted the return value of glob_match; returning true on
match seemed to make more sense.
Signed-off-by: George Spelvin <linux@horizon.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>