[PATCH] mm: tlb_gather_mmu get_cpu_var
authorHugh Dickins <hugh@veritas.com>
Sun, 30 Oct 2005 01:16:01 +0000 (18:16 -0700)
committerLinus Torvalds <torvalds@g5.osdl.org>
Sun, 30 Oct 2005 04:40:37 +0000 (21:40 -0700)
commit15a23ffa2fc91cebdac44d4aee994f59d5c28dc0
tree5006935b29246c1ae07a7abc6a384f6b547293ce
parent7be7a546994f1222b2312fd348da14e16b6b7b42
[PATCH] mm: tlb_gather_mmu get_cpu_var

tlb_gather_mmu dates from before kernel preemption was allowed, and uses
smp_processor_id or __get_cpu_var to find its per-cpu mmu_gather.  That works
because it's currently only called after getting page_table_lock, which is not
dropped until after the matching tlb_finish_mmu.  But don't rely on that, it
will soon change: now disable preemption internally by proper get_cpu_var in
tlb_gather_mmu, put_cpu_var in tlb_finish_mmu.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
include/asm-arm/tlb.h
include/asm-arm26/tlb.h
include/asm-generic/tlb.h
include/asm-ia64/tlb.h
include/asm-sparc64/tlb.h