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authorRavikiran G Thirumalai <kiran@scalex86.org>2006-01-12 00:46:15 +0300
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-12 06:05:01 +0300
commit5fd63b308569060ffa40af52ed122d9734111bff (patch)
tree746c2701ec42374b1ec389a6af0d438c9105a9d7 /include/asm-x86_64/cache.h
parent99f7b77d3c62045bb47dfc4228a2341ba71bff1d (diff)
downloadlinux-5fd63b308569060ffa40af52ed122d9734111bff.tar.xz
[PATCH] x86_64: Inclusion of ScaleMP vSMP architecture patches - vsmp_align
vSMP specific alignment patch to 1. Define INTERNODE_CACHE_SHIFT for vSMP 2. Use this for alignment of critical structures 3. Use INTERNODE_CACHE_SHIFT for ARCH_MIN_TASKALIGN, and let the slab align task_struct allocations to the internode cacheline size 4. Introduce and use ARCH_MIN_MMSTRUCT_ALIGN for mm_struct slab allocations. Signed-off-by: Ravikiran Thirumalai <kiran@scalemp.com> Signed-off-by: Shai Fultheim <shai@scalemp.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-x86_64/cache.h')
-rw-r--r--include/asm-x86_64/cache.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/asm-x86_64/cache.h b/include/asm-x86_64/cache.h
index b4a2401de77b..263f0a211ed7 100644
--- a/include/asm-x86_64/cache.h
+++ b/include/asm-x86_64/cache.h
@@ -10,4 +10,16 @@
#define L1_CACHE_SHIFT (CONFIG_X86_L1_CACHE_SHIFT)
#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
+#ifdef CONFIG_X86_VSMP
+
+/* vSMP Internode cacheline shift */
+#define INTERNODE_CACHE_SHIFT (12)
+#ifdef CONFIG_SMP
+#define __cacheline_aligned_in_smp \
+ __attribute__((__aligned__(1 << (INTERNODE_CACHE_SHIFT)))) \
+ __attribute__((__section__(".data.page_aligned")))
+#endif
+
+#endif
+
#endif