linux-toradex.git/include/linux/slab_def.h, branch v3.0.3

tracing/slab: Move kmalloc tracepoint out of inline code

2010-11-28T19:16:28+00:00

The tracepoint for kmalloc is in the slab inlined code which causes
every instance of kmalloc to have the tracepoint.

This patch moves the tracepoint out of the inline code to the
slab C file, which removes a large number of inlined trace
points.

  objdump -dr vmlinux.slab| grep 'jmpq.*
Signed-off-by: Pekka Enberg

dma-mapping: rename ARCH_KMALLOC_MINALIGN to ARCH_DMA_MINALIGN

2010-08-11T15:59:21+00:00

Now each architecture has the own dma_get_cache_alignment implementation.

dma_get_cache_alignment returns the minimum DMA alignment.  Architectures
define it as ARCH_KMALLOC_MINALIGN (it's used to make sure that malloc'ed
buffer is DMA-safe; the buffer doesn't share a cache with the others).  So
we can unify dma_get_cache_alignment implementations.

This patch:

dma_get_cache_alignment() needs to know if an architecture defines
ARCH_KMALLOC_MINALIGN or not (needs to know if architecture has DMA
alignment restriction).  However, slab.h define ARCH_KMALLOC_MINALIGN if
architectures doesn't define it.

Let's rename ARCH_KMALLOC_MINALIGN to ARCH_DMA_MINALIGN.
ARCH_KMALLOC_MINALIGN is used only in the internals of slab/slob/slub
(except for crypto).

Signed-off-by: FUJITA Tomonori 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tracing: Remove kmemtrace ftrace plugin

2010-06-09T15:31:22+00:00

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ones, and kmemtrace has been superseded by kmem trace events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: Li Zefan 
Acked-by: Pekka Enberg 
Acked-by: Eduard - Gabriel Munteanu 
Cc: Ingo Molnar 
Cc: Steven Rostedt 
[ remove kmemtrace from the makefile, handle slob too ]
Signed-off-by: Frederic Weisbecker

mm: Move ARCH_SLAB_MINALIGN and ARCH_KMALLOC_MINALIGN to

2010-05-19T19:03:13+00:00

Acked-by: Herbert Xu 
Signed-off-by: David Woodhouse 
Signed-off-by: Pekka Enberg

tracing, slab: Define kmem_cache_alloc_notrace ifdef CONFIG_TRACING

2009-12-11T08:17:02+00:00

Define kmem_trace_alloc_{,node}_notrace() if CONFIG_TRACING is
enabled, otherwise perf-kmem will show wrong stats ifndef
CONFIG_KMEM_TRACE, because a kmalloc() memory allocation may
be traced by both trace_kmalloc() and trace_kmem_cache_alloc().

Signed-off-by: Li Zefan 
Reviewed-by: Pekka Enberg 
Cc: Christoph Lameter 
Cc: Steven Rostedt 
Cc: Frederic Weisbecker 
Cc: linux-mm@kvack.org 
Cc: Eduard - Gabriel Munteanu 
LKML-Reference: <4B21F89A.7000801@cn.fujitsu.com>
Signed-off-by: Ingo Molnar

slab: move struct kmem_cache to headers

2009-06-13T06:58:43+00:00

Move the SLAB struct kmem_cache definition to  like
with SLUB so kmemcheck can access ->ctor and ->flags.

Cc: Ingo Molnar 
Cc: Christoph Lameter 
Cc: Andrew Morton 
Signed-off-by: Pekka Enberg 

[rebased for mainline inclusion]
Signed-off-by: Vegard Nossum

tracing, kmemtrace: Separate include/trace/kmemtrace.h to kmemtrace part and tracepoint part

2009-04-12T13:22:55+00:00

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: Zhao Lei 
Acked-by: Eduard - Gabriel Munteanu 
Acked-by: Pekka Enberg 
Cc: Steven Rostedt 
Cc: Frederic Weisbecker 
Cc: Tom Zanussi 
LKML-Reference: <49DEE68A.5040902@cn.fujitsu.com>
Signed-off-by: Ingo Molnar

kmemtrace: use tracepoints

2009-04-03T10:23:06+00:00

kmemtrace now uses tracepoints instead of markers. We no longer need to
use format specifiers to pass arguments.

Signed-off-by: Eduard - Gabriel Munteanu 
[ 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: Pekka Enberg 
LKML-Reference: 
Signed-off-by: Ingo Molnar

Merge branches 'tracing/ftrace', 'tracing/kmemtrace' and 'linus' into tracing/core

2009-02-03T05:25:38+00:00

kmalloc: return NULL instead of link failure

2009-01-27T21:48:59+00:00

The SLAB kmalloc with a constant value isn't consistent with the other
implementations because it bails out with __you_cannot_kmalloc_that_much
rather than returning NULL and properly allowing the caller to fall back
to vmalloc or take other action.  This doesn't happen with a non-constant
value or with SLOB or SLUB.

Starting with 2.6.28, I've been seeing build failures on s390x.  This is
due to init_section_page_cgroup trying to allocate 2.5MB when the max size
for a kmalloc on s390x is 2MB.

It's failing because the value is constant.  The workarounds at the call
size are ugly and the caller shouldn't have to change behavior depending
on what the backend of the API is.

So, this patch eliminates the link failure and returns NULL like the other
implementations.

Signed-off-by: Jeff Mahoney 
Cc: Martin Schwidefsky 
Cc: Heiko Carstens 
Cc: Christoph Lameter 
Cc: Pekka Enberg 
Cc: Matt Mackall 
Cc: Nick Piggin 
Cc: 		[2.6.28.x]
Signed-off-by: Andrew Morton 
Signed-off-by: Pekka Enberg