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authorRichard Kennedy <richard@rsk.demon.co.uk>2008-07-04 13:56:16 +0100
committerIngo Molnar <mingo@elte.hu>2008-07-04 16:47:19 +0200
commit84e65b0a84a2c856bef36f13d122047678408b0a (patch)
tree62d2e2e29fa107b3a04cd9156358639ec1e83cd3 /include/asm-x86/processor.h
parent95c60b08c6af6db2165837139da10f593462d51c (diff)
downloadlinux-84e65b0a84a2c856bef36f13d122047678408b0a.tar.bz2
x86: cacheline_align tss_struct
The manual padding to align on cacheline size only worked in 32 bit In 64 bit the structure was not aligned and contained wasted space. use the compiler ____cachline_aligned to save space & properly align this structure. x86_64_default size goes from 9136 -> 8960 x86_64_AMD size goes from 9136 -> 8896 built & running on 2.6.26-rc8. Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/processor.h')
-rw-r--r--include/asm-x86/processor.h6
1 files changed, 1 insertions, 5 deletions
diff --git a/include/asm-x86/processor.h b/include/asm-x86/processor.h
index 559105220a47..4ab2ede6f4b9 100644
--- a/include/asm-x86/processor.h
+++ b/include/asm-x86/processor.h
@@ -263,15 +263,11 @@ struct tss_struct {
struct thread_struct *io_bitmap_owner;
/*
- * Pad the TSS to be cacheline-aligned (size is 0x100):
- */
- unsigned long __cacheline_filler[35];
- /*
* .. and then another 0x100 bytes for the emergency kernel stack:
*/
unsigned long stack[64];
-} __attribute__((packed));
+} ____cacheline_aligned;
DECLARE_PER_CPU(struct tss_struct, init_tss);