- 31 10月, 2012 3 次提交
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由 Ezequiel Garcia 提交于
This function is identically defined in all three allocators and it's trivial to move it to slab.h Since now it's static, inline, header-defined function this patch also drops the EXPORT_SYMBOL tag. Cc: Pekka Enberg <penberg@kernel.org> Cc: Matt Mackall <mpm@selenic.com> Acked-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NEzequiel Garcia <elezegarcia@gmail.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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由 Ezequiel Garcia 提交于
Fields object_size and size are not the same: the latter might include slab metadata. Return object_size field in kmem_cache_size(). Also, improve trace accuracy by correctly tracing reported size. Cc: Pekka Enberg <penberg@kernel.org> Cc: Matt Mackall <mpm@selenic.com> Acked-by: NChristoph Lameter <cl@linux.com> Acked-by: NDavid Rientjes <rientjes@google.com> Signed-off-by: NEzequiel Garcia <elezegarcia@gmail.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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由 Ezequiel Garcia 提交于
This field was being used to store size allocation so it could be retrieved by ksize(). However, it is a bad practice to not mark a page as a slab page and then use fields for special purposes. There is no need to store the allocated size and ksize() can simply return PAGE_SIZE << compound_order(page). Cc: Pekka Enberg <penberg@kernel.org> Cc: Matt Mackall <mpm@selenic.com> Acked-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NEzequiel Garcia <elezegarcia@gmail.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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- 26 9月, 2012 1 次提交
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由 David Rientjes 提交于
On Sat, 8 Sep 2012, Ezequiel Garcia wrote: > @@ -454,15 +455,35 @@ void *__kmalloc_node(size_t size, gfp_t gfp, int node) > gfp |= __GFP_COMP; > ret = slob_new_pages(gfp, order, node); > > - trace_kmalloc_node(_RET_IP_, ret, > + trace_kmalloc_node(caller, ret, > size, PAGE_SIZE << order, gfp, node); > } > > kmemleak_alloc(ret, size, 1, gfp); > return ret; > } > + > +void *__kmalloc_node(size_t size, gfp_t gfp, int node) > +{ > + return __do_kmalloc_node(size, gfp, node, _RET_IP_); > +} > EXPORT_SYMBOL(__kmalloc_node); > > +#ifdef CONFIG_TRACING > +void *__kmalloc_track_caller(size_t size, gfp_t gfp, unsigned long caller) > +{ > + return __do_kmalloc_node(size, gfp, NUMA_NO_NODE, caller); > +} > + > +#ifdef CONFIG_NUMA > +void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags, > + int node, unsigned long caller) > +{ > + return __do_kmalloc_node(size, gfp, node, caller); > +} > +#endif This breaks Pekka's slab/next tree with this: mm/slob.c: In function '__kmalloc_node_track_caller': mm/slob.c:488: error: 'gfp' undeclared (first use in this function) mm/slob.c:488: error: (Each undeclared identifier is reported only once mm/slob.c:488: error: for each function it appears in.) mm, slob: fix build breakage in __kmalloc_node_track_caller "mm, slob: Add support for kmalloc_track_caller()" breaks the build because gfp is undeclared. Fix it. Acked-by: NEzequiel Garcia <elezegarcia@gmail.com> Signed-off-by: NDavid Rientjes <rientjes@google.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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- 25 9月, 2012 2 次提交
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由 Ezequiel Garcia 提交于
Currently slob falls back to regular kmalloc for this case. With this patch kmalloc_track_caller() is correctly implemented, thus tracing the specified caller. This is important to trace accurately allocations performed by krealloc, kstrdup, kmemdup, etc. Signed-off-by: NEzequiel Garcia <elezegarcia@gmail.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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由 Ezequiel Garcia 提交于
Acked-by: NDavid Rientjes <rientjes@google.com> Signed-off-by: NEzequiel Garcia <elezegarcia@gmail.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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- 05 9月, 2012 8 次提交
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由 Christoph Lameter 提交于
Get rid of the refcount stuff in the allocators and do that part of kmem_cache management in the common code. Signed-off-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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由 Christoph Lameter 提交于
Do the initial settings of the fields in common code. This will allow us to push more processing into common code later and improve readability. Signed-off-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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由 Christoph Lameter 提交于
Shift the allocations to common code. That way the allocation and freeing of the kmem_cache structures is handled by common code. Reviewed-by: NGlauber Costa <glommer@parallels.com> Signed-off-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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由 Christoph Lameter 提交于
What is done there can be done in __kmem_cache_shutdown. This affects RCU handling somewhat. On rcu free all slab allocators do not refer to other management structures than the kmem_cache structure. Therefore these other structures can be freed before the rcu deferred free to the page allocator occurs. Reviewed-by: NJoonsoo Kim <js1304@gmail.com> Signed-off-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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由 Christoph Lameter 提交于
The freeing action is basically the same in all slab allocators. Move to the common kmem_cache_destroy() function. Reviewed-by: NGlauber Costa <glommer@parallels.com> Reviewed-by: NJoonsoo Kim <js1304@gmail.com> Signed-off-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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由 Christoph Lameter 提交于
Make all allocators use the "kmem_cache" slabname for the "kmem_cache" structure. Reviewed-by: NGlauber Costa <glommer@parallels.com> Reviewed-by: NJoonsoo Kim <js1304@gmail.com> Signed-off-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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由 Christoph Lameter 提交于
kmem_cache_destroy does basically the same in all allocators. Extract common code which is easy since we already have common mutex handling. Reviewed-by: NGlauber Costa <glommer@parallels.com> Signed-off-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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由 Christoph Lameter 提交于
Move the code to append the new kmem_cache to the list of slab caches to the kmem_cache_create code in the shared code. This is possible now since the acquisition of the mutex was moved into kmem_cache_create(). Acked-by: NDavid Rientjes <rientjes@google.com> Reviewed-by: NGlauber Costa <glommer@parallels.com> Reviewed-by: NJoonsoo Kim <js1304@gmail.com> Signed-off-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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- 12 7月, 2012 1 次提交
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由 Christoph Lameter 提交于
Commit fd3142a59af2012a7c5dc72ec97a4935ff1c5fc6 broke slob since a piece of a change for a later patch slipped into it. Fengguang Wu writes: The commit crashes the kernel w/o any dmesg output (the attached one is created by the script as a summary for that run). This is very reproducible in kvm for the attached config. Reported-by: NFengguang Wu <fengguang.wu@intel.com> Signed-off-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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- 09 7月, 2012 2 次提交
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由 Christoph Lameter 提交于
All allocators have some sort of support for the bootstrap status. Setup a common definition for the boot states and make all slab allocators use that definition. Reviewed-by: NGlauber Costa <glommer@parallels.com> Reviewed-by: NJoonsoo Kim <js1304@gmail.com> Signed-off-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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由 Christoph Lameter 提交于
Kmem_cache_create() does a variety of sanity checks but those vary depending on the allocator. Use the strictest tests and put them into a slab_common file. Make the tests conditional on CONFIG_DEBUG_VM. This patch has the effect of adding sanity checks for SLUB and SLOB under CONFIG_DEBUG_VM and removes the checks in SLAB for !CONFIG_DEBUG_VM. Signed-off-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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- 14 6月, 2012 4 次提交
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由 Christoph Lameter 提交于
Define a struct that describes common fields used in all slab allocators. A slab allocator either uses the common definition (like SLOB) or is required to provide members of kmem_cache with the definition given. After that it will be possible to share code that only operates on those fields of kmem_cache. The patch basically takes the slob definition of kmem cache and uses the field namees for the other allocators. It also standardizes the names used for basic object lengths in allocators: object_size Struct size specified at kmem_cache_create. Basically the payload expected to be used by the subsystem. size The size of memory allocator for each object. This size is larger than object_size and includes padding, alignment and extra metadata for each object (f.e. for debugging and rcu). Signed-off-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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由 Christoph Lameter 提交于
Those have become so simple that they are no longer needed. Reviewed-by: NJoonsoo Kim <js1304@gmail.com> Acked-by: NDavid Rientjes <rientjes@google.com> signed-off-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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由 Christoph Lameter 提交于
Reviewed-by: NJoonsoo Kim <js1304@gmail.com> Acked-by: NDavid Rientjes <rientjes@google.com> Signed-off-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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由 Christoph Lameter 提交于
Define the fields used by slob in mm_types.h and use struct page instead of struct slob_page in slob. This cleans up numerous of typecasts in slob.c and makes readers aware of slob's use of page struct fields. [Also cleans up some bitrot in slob.c. The page struct field layout in slob.c is an old layout and does not match the one in mm_types.h] Reviewed-by: NGlauber Costa <glommer@parallels.com> Acked-by: NDavid Rientjes <rientjes@google.com> Reviewed-by: NJoonsoo Kim <js1304@gmail.com> Signed-off-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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- 31 10月, 2011 1 次提交
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由 Paul Gortmaker 提交于
The files changed within are only using the EXPORT_SYMBOL macro variants. They are not using core modular infrastructure and hence don't need module.h but only the export.h header. Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
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- 27 7月, 2011 1 次提交
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由 Arun Sharma 提交于
This allows us to move duplicated code in <asm/atomic.h> (atomic_inc_not_zero() for now) to <linux/atomic.h> Signed-off-by: NArun Sharma <asharma@fb.com> Reviewed-by: NEric Dumazet <eric.dumazet@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Miller <davem@davemloft.net> Cc: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: NMike Frysinger <vapier@gentoo.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 08 6月, 2011 1 次提交
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由 Steven Rostedt 提交于
Doing a ktest.pl randconfig, I stumbled across the following bug on boot up: ------------[ cut here ]------------ WARNING: at /home/rostedt/work/autotest/nobackup/linux-test.git/kernel/lockdep.c:2649 lockdep_trace_alloc+0xed/0x100() Hardware name: Modules linked in: Pid: 0, comm: swapper Not tainted 3.0.0-rc1-test-00054-g1d68b67 #1 Call Trace: [<ffffffff810626ad>] warn_slowpath_common+0xad/0xf0 [<ffffffff8106270a>] warn_slowpath_null+0x1a/0x20 [<ffffffff810b537d>] lockdep_trace_alloc+0xed/0x100 [<ffffffff81182fb0>] __kmalloc_node+0x30/0x2f0 [<ffffffff81153eda>] pcpu_mem_alloc+0x13a/0x180 [<ffffffff82be022c>] percpu_init_late+0x48/0xc2 [<ffffffff82bd630c>] ? mem_init+0xd8/0xe3 [<ffffffff82bbcc73>] start_kernel+0x1c2/0x449 [<ffffffff82bbc35c>] x86_64_start_reservations+0x163/0x167 [<ffffffff82bbc493>] x86_64_start_kernel+0x133/0x142^M ---[ end trace a7919e7f17c0a725 ]--- Then I ran a ktest.pl config_bisect and it came up with this config as the problem: CONFIG_SLOB Looking at what is different between SLOB and SLAB and SLUB, I found that the gfp flags are masked against gfp_allowed_mask in SLAB and SLUB, but not SLOB. On boot up, interrupts are disabled and lockdep will warn if some flags are set in gfp and interrupts are disabled. But these flags are masked off with the gfp_allowed_mask during boot. Because SLOB does not mask the flags against gfp_allowed_mask it triggers the warn on. Adding this mask fixes the bug. I also found that kmem_cache_alloc_node() was missing both the mask and the lockdep check, and that was added too. Acked-by: NMatt Mackall <mpm@selenic.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Nick Piggin <npiggin@kernel.dk> Signed-off-by: NSteven Rostedt <rostedt@goodmis.org> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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- 24 1月, 2011 1 次提交
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由 Christoph Lameter 提交于
The last user was ext4 and Eric Sandeen removed the call in a recent patch. See the following URL for the discussion: http://marc.info/?l=linux-ext4&m=129546975702198&w=2Signed-off-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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- 07 1月, 2011 1 次提交
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由 Nick Piggin 提交于
This is a nasty and error prone API. It is no longer used, remove it. Signed-off-by: NNick Piggin <npiggin@kernel.dk>
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- 02 10月, 2010 1 次提交
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由 David Rientjes 提交于
kmalloc_node() may allocate higher order slob pages, but the __GFP_COMP bit is only passed to the page allocator and not represented in the tracepoint event. The bit should be passed to trace_kmalloc_node() as well. Acked-by: NMatt Mackall <mpm@selenic.com> Reviewed-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NDavid Rientjes <rientjes@google.com> Signed-off-by: NPekka Enberg <penberg@kernel.org>
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- 16 7月, 2010 1 次提交
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由 Bob Liu 提交于
SLOB has alloced smaller objects from their own list in reduce overall external fragmentation and increase repeatability, free to their own list also. This is /proc/meminfo result in my test machine: without this patch: === MemTotal: 1030720 kB MemFree: 750012 kB Buffers: 15496 kB Cached: 160396 kB SwapCached: 0 kB Active: 105024 kB Inactive: 145604 kB Active(anon): 74816 kB Inactive(anon): 2180 kB Active(file): 30208 kB Inactive(file): 143424 kB Unevictable: 16 kB .... with this patch: === MemTotal: 1030720 kB MemFree: 751908 kB Buffers: 15492 kB Cached: 160280 kB SwapCached: 0 kB Active: 102720 kB Inactive: 146140 kB Active(anon): 73168 kB Inactive(anon): 2180 kB Active(file): 29552 kB Inactive(file): 143960 kB Unevictable: 16 kB ... The result shows an improvement of 1 MB! And when I tested it on a embeded system with 64 MB, I found this path is never called during kernel bootup. Acked-by: NMatt Mackall <mpm@selenic.com> Signed-off-by: NBob Liu <lliubbo@gmail.com> Signed-off-by: NPekka Enberg <penberg@cs.helsinki.fi>
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- 15 6月, 2010 1 次提交
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由 Paul E. McKenney 提交于
Remove all rcu head inits. We don't care about the RCU head state before passing it to call_rcu() anyway. Only leave the "on_stack" variants so debugobjects can keep track of objects on stack. Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Signed-off-by: NMathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Matt Mackall <mpm@selenic.com> Cc: Andrew Morton <akpm@linux-foundation.org>
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- 09 6月, 2010 1 次提交
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由 Li Zefan 提交于
We have been resisting new ftrace plugins and removing existing ones, and kmemtrace has been superseded by kmem trace events and perf-kmem, so we remove it. Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com> Acked-by: NPekka Enberg <penberg@cs.helsinki.fi> Acked-by: NEduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: Ingo Molnar <mingo@elte.hu> Cc: Steven Rostedt <rostedt@goodmis.org> [ remove kmemtrace from the makefile, handle slob too ] Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com>
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- 20 5月, 2010 1 次提交
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由 David Woodhouse 提交于
Acked-by: NHerbert Xu <herbert@gondor.apana.org.au> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com> Signed-off-by: NPekka Enberg <penberg@cs.helsinki.fi>
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- 06 8月, 2009 1 次提交
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由 Wu Fengguang 提交于
kmem_cache_init_late() has been declared in slab.h CC: Nick Piggin <npiggin@suse.de> CC: Matt Mackall <mpm@selenic.com> CC: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: NWu Fengguang <fengguang.wu@intel.com> Signed-off-by: NPekka Enberg <penberg@cs.helsinki.fi>
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- 26 6月, 2009 1 次提交
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由 Paul E. McKenney 提交于
Jesper noted that kmem_cache_destroy() invokes synchronize_rcu() rather than rcu_barrier() in the SLAB_DESTROY_BY_RCU case, which could result in RCU callbacks accessing a kmem_cache after it had been destroyed. Cc: <stable@kernel.org> Acked-by: NMatt Mackall <mpm@selenic.com> Reported-by: NJesper Dangaard Brouer <hawk@comx.dk> Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: NPekka Enberg <penberg@cs.helsinki.fi>
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- 17 6月, 2009 1 次提交
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由 Mel Gorman 提交于
Callers of alloc_pages_node() can optionally specify -1 as a node to mean "allocate from the current node". However, a number of the callers in fast paths know for a fact their node is valid. To avoid a comparison and branch, this patch adds alloc_pages_exact_node() that only checks the nid with VM_BUG_ON(). Callers that know their node is valid are then converted. Signed-off-by: NMel Gorman <mel@csn.ul.ie> Reviewed-by: NChristoph Lameter <cl@linux-foundation.org> Reviewed-by: NKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Reviewed-by: NPekka Enberg <penberg@cs.helsinki.fi> Acked-by: Paul Mundt <lethal@linux-sh.org> [for the SLOB NUMA bits] Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Dave Hansen <dave@linux.vnet.ibm.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 12 6月, 2009 1 次提交
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由 Catalin Marinas 提交于
This patch adds the callbacks to kmemleak_(alloc|free) functions from the slob allocator. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Acked-by: NMatt Mackall <mpm@selenic.com> Acked-by: NPekka Enberg <penberg@cs.helsinki.fi>
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- 11 5月, 2009 1 次提交
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由 Wu Fengguang 提交于
For the sake of consistency. Signed-off-by: NWu Fengguang <fengguang.wu@intel.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Andi Kleen <andi@firstfloor.org> Acked-by: NMatt Mackall <mpm@selenic.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NPekka Enberg <penberg@cs.helsinki.fi>
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- 06 5月, 2009 1 次提交
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由 Nick Piggin 提交于
SLOB does not correctly account reclaim_state.reclaimed_slab, so it will break memory reclaim. Account it like SLAB does. Cc: stable@kernel.org Cc: linux-mm@kvack.org Acked-by: NMatt Mackall <mpm@selenic.com> Acked-by: NChristoph Lameter <cl@linux-foundation.org> Signed-off-by: NNick Piggin <npiggin@suse.de> Signed-off-by: NPekka Enberg <penberg@cs.helsinki.fi>
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- 12 4月, 2009 1 次提交
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由 Zhaolei 提交于
Impact: refactor code for future changes Current kmemtrace.h is used both as header file of kmemtrace and kmem's tracepoints definition. Tracepoints' definition file may be used by other code, and should only have definition of tracepoint. We can separate include/trace/kmemtrace.h into 2 files: include/linux/kmemtrace.h: header file for kmemtrace include/trace/kmem.h: definition of kmem tracepoints Signed-off-by: NZhao Lei <zhaolei@cn.fujitsu.com> Acked-by: NEduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Acked-by: NPekka Enberg <penberg@cs.helsinki.fi> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <49DEE68A.5040902@cn.fujitsu.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 03 4月, 2009 2 次提交
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由 Pekka Enberg 提交于
Impact: also output kfree(NULL) entries This patch moves the trace_kfree() calls before the ZERO_OR_NULL_PTR check so that we can trace call-sites that call kfree() with NULL many times which might be an indication of a bug. Signed-off-by: NPekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> LKML-Reference: <1237971957.30175.18.camel@penberg-laptop> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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kmemtrace now uses tracepoints instead of markers. We no longer need to use format specifiers to pass arguments. Signed-off-by: NEduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> [ folded: Use the new TP_PROTO and TP_ARGS to fix the build. ] [ folded: fix build when CONFIG_KMEMTRACE is disabled. ] [ folded: define tracepoints when CONFIG_TRACEPOINTS is enabled. ] Signed-off-by: NPekka Enberg <penberg@cs.helsinki.fi> LKML-Reference: <ae61c0f37156db8ec8dc0d5778018edde60a92e3.1237813499.git.eduard.munteanu@linux360.ro> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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