linux-toradex.git/include/linux/slab_def.h, branch v3.9-rc3

slab/slub: struct memcg_params

2012-12-18T23:02:13+00:00

For the kmem slab controller, we need to record some extra information in
the kmem_cache structure.

Signed-off-by: Glauber Costa 
Signed-off-by: Suleiman Souhlal 
Cc: Christoph Lameter 
Cc: David Rientjes 
Cc: Frederic Weisbecker 
Cc: Greg Thelen 
Cc: Johannes Weiner 
Cc: JoonSoo Kim 
Cc: KAMEZAWA Hiroyuki 
Cc: Mel Gorman 
Cc: Michal Hocko 
Cc: Pekka Enberg 
Cc: Rik van Riel 
Cc: Tejun Heo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

slab: Simplify bootstrap

2012-12-11T10:14:27+00:00

The nodelists field in kmem_cache is pointing to the first unused
object in the array field when bootstrap is complete.

A problem with the current approach is that the statically sized
kmem_cache structure use on boot can only contain NR_CPUS entries.
If the number of nodes plus the number of cpus is greater then we
would overwrite memory following the kmem_cache_boot definition.

Increase the size of the array field to ensure that also the node
pointers fit into the array field.

Once we do that we no longer need the kmem_cache_nodelists
array and we can then also use that structure elsewhere.

Acked-by: Glauber Costa 
Signed-off-by: Christoph Lameter 
Signed-off-by: Pekka Enberg

mm/slab: Fix kmem_cache_alloc_node_trace() declaration

2012-09-29T07:02:27+00:00

This bug was introduced in commit 4052147 ("mm, slab: Match SLAB and
SLUB kmem_cache_alloc_xxx_trace() prototype").

Cc: David Rientjes 
Reported-by: Fengguang Wu 
Signed-off-by: Ezequiel Garcia 
Signed-off-by: Pekka Enberg

mm, slab: Match SLAB and SLUB kmem_cache_alloc_xxx_trace() prototype

2012-09-25T07:17:24+00:00

This long (seemingly unnecessary) patch does not fix anything and
its only goal is to produce common code between SLAB and SLUB.

Cc: Christoph Lameter 
Signed-off-by: Ezequiel Garcia 
Signed-off-by: Pekka Enberg

mm, slab: Remove silly function slab_buffer_size()

2012-09-25T07:12:19+00:00

This function is seldom used, and can be simply replaced with cachep->size.

Acked-by: David Rientjes 
Signed-off-by: Ezequiel Garcia 
Signed-off-by: Pekka Enberg

mm, slab: remove dflags

2012-08-17T11:32:02+00:00

cachep->dflags is never referenced, so remove it.

Acked-by: Christoph Lameter 
Signed-off-by: David Rientjes 
Signed-off-by: Pekka Enberg

slab: rename gfpflags to allocflags

2012-07-02T10:40:06+00:00

A consistent name with slub saves us an acessor function.
In both caches, this field represents the same thing. We would
like to use it from the mem_cgroup code.

Signed-off-by: Glauber Costa 
Acked-by: Christoph Lameter 
CC: Pekka Enberg 
Signed-off-by: Pekka Enberg

mm, sl[aou]b: Extract common fields from struct kmem_cache

2012-06-14T06:20:16+00:00

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: Christoph Lameter 
Signed-off-by: Pekka Enberg

tracing/mm: Move include of trace/events/kmem.h out of header into slab.c

2012-01-09T22:19:33+00:00

Including trace/events/*.h TRACE_EVENT() macro headers in other headers
can cause strange side effects if another trace/event/*.h header
includes that header.  Having trace/events/kmem.h inside slab_def.h
caused a compile error in sparc64 when changes were done to some header
files.  Moving the kmem.h trace header out of slab.h and into slab.c
fixes the problem.

Note, both slub.c and slob.c already include the trace/events/kmem.h
file. Only slab.c had it missing.

Link: http://lkml.kernel.org/r/20120105190405.1e3191fb5a43b2a0f1655e1f@canb.auug.org.au

Reported-by: Stephen Rothwell 
Signed-off-by: Steven Rostedt 
Signed-off-by: Linus Torvalds

slab: shrink sizeof(struct kmem_cache)

2011-07-20T17:27:56+00:00

Reduce high order allocations for some setups.
(NR_CPUS=4096 -> we need 64KB per kmem_cache struct)

We now allocate exact needed size (using nr_cpu_ids and nr_node_ids)

This also makes code a bit smaller on x86_64, since some field offsets
are less than the 127 limit :

Before patch :
# size mm/slab.o
   text    data     bss     dec     hex filename
  22605  361665      32  384302   5dd2e mm/slab.o

After patch :
# size mm/slab.o
   text    data     bss     dec     hex filename
  22349	 353473	   8224	 384046	  5dc2e	mm/slab.o

CC: Andrew Morton 
Reported-by: Konstantin Khlebnikov 
Signed-off-by: Eric Dumazet 
Acked-by: Christoph Lameter 
Signed-off-by: Pekka Enberg