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| author |   Jeremy Fitzhardinge <jeremy@goop.org> | 2009-09-03 14:31:44 -0700 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2009-09-04 07:10:31 +0200 |
| commit | 53f824520b6d84ca5b4a8fd71addc91dbf64357e (patch) | |
| tree | fc62733de8040f13cf450b6cae967976da31827b /include/linux/percpu-defs.h | |
| parent | x86/i386: Make sure stack-protector segment base is cache aligned (diff) | |
| download | linux-dev-53f824520b6d84ca5b4a8fd71addc91dbf64357e.tar.xz linux-dev-53f824520b6d84ca5b4a8fd71addc91dbf64357e.zip | |
x86/i386: Put aligned stack-canary in percpu shared_aligned section
Pack aligned things together into a special section to minimize
padding holes.
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Tejun Heo <tj@kernel.org>
LKML-Reference: <4AA035C0.9070202@goop.org>
[ queued up in tip:x86/asm because it depends on this commit:
x86/i386: Make sure stack-protector segment base is cache aligned ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/percpu-defs.h')
| -rw-r--r-- | include/linux/percpu-defs.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/percpu-defs.h b/include/linux/percpu-defs.h index 68438e18fff4..3058cf9dd3d4 100644 --- a/include/linux/percpu-defs.h +++ b/include/linux/percpu-defs.h @@ -66,6 +66,14 @@ DEFINE_PER_CPU_SECTION(type, name, PER_CPU_SHARED_ALIGNED_SECTION) \ ____cacheline_aligned_in_smp +#define DECLARE_PER_CPU_ALIGNED(type, name) \ + DECLARE_PER_CPU_SECTION(type, name, PER_CPU_ALIGNED_SECTION) \ + ____cacheline_aligned + +#define DEFINE_PER_CPU_ALIGNED(type, name) \ + DEFINE_PER_CPU_SECTION(type, name, PER_CPU_ALIGNED_SECTION) \ + ____cacheline_aligned + /* * Declaration/definition used for per-CPU variables that must be page aligned. */ |