[PATCH] Change maxaligned_in_smp alignemnt macros to internodealigned_in_smp macros
____cacheline_maxaligned_in_smp is currently used to align critical structures and avoid false sharing. It uses per-arch L1_CACHE_SHIFT_MAX and people find L1_CACHE_SHIFT_MAX useless. However, we have been using ____cacheline_maxaligned_in_smp to align structures on the internode cacheline size. As per Andi's suggestion, following patch kills ____cacheline_maxaligned_in_smp and introduces INTERNODE_CACHE_SHIFT, which defaults to L1_CACHE_SHIFT for all arches. Arches needing L3/Internode cacheline alignment can define INTERNODE_CACHE_SHIFT in the arch asm/cache.h. Patch replaces ____cacheline_maxaligned_in_smp with ____cacheline_internodealigned_in_smp With this patch, L1_CACHE_SHIFT_MAX can be killed Signed-off-by:Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by:
Shai Fultheim <shai@scalex86.org> Signed-off-by:
Andi Kleen <ak@suse.de> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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- arch/i386/kernel/init_task.c 1 addition, 1 deletionarch/i386/kernel/init_task.c
- arch/i386/kernel/irq.c 1 addition, 1 deletionarch/i386/kernel/irq.c
- arch/x86_64/kernel/init_task.c 1 addition, 1 deletionarch/x86_64/kernel/init_task.c
- include/linux/cache.h 13 additions, 4 deletionsinclude/linux/cache.h
- include/linux/ide.h 1 addition, 1 deletioninclude/linux/ide.h
- include/linux/mmzone.h 2 additions, 2 deletionsinclude/linux/mmzone.h
- include/linux/rcupdate.h 1 addition, 1 deletioninclude/linux/rcupdate.h
- kernel/rcupdate.c 2 additions, 2 deletionskernel/rcupdate.c
- mm/sparse.c 2 additions, 2 deletionsmm/sparse.c
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