25 May, 2011
1 commit
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Reorder mm_context_t to remove alignment padding on 64 bit
builds shrinking its size from 64 to 56 bytes.This allows mm_struct to shrink from 840 to 832 bytes, so using
one fewer cache lines, and getting more objects per slab when
using slub.slabinfo mm_struct reports
before :-Sizes (bytes) Slabs
-----------------------------------
Object : 840 Total : 7
SlabObj: 896 Full : 1
SlabSiz: 16384 Partial: 4
Loss : 56 CpuSlab: 2
Align : 64 Objects: 18after :-
Sizes (bytes) Slabs
----------------------------------
Object : 832 Total : 7
SlabObj: 832 Full : 1
SlabSiz: 16384 Partial: 4
Loss : 0 CpuSlab: 2
Align : 64 Objects: 19Signed-off-by: Richard Kennedy
Cc: wilsons@start.ca
Cc: Linus Torvalds
Cc: Andrew Morton
Cc: Pekka Enberg
Link: http://lkml.kernel.org/r/1306244999.1999.5.camel@castor.rsk
Signed-off-by: Ingo Molnar
24 Mar, 2011
1 commit
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This tag is intended to mirror the thread info TIF_IA32 flag. Will be used to
identify mm's which support 32 bit tasks running in compatibility mode without
requiring a reference to the task itself.Signed-off-by: Stephen Wilson
Reviewed-by: Michel Lespinasse
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: "H. Peter Anvin"
Signed-off-by: Al Viro
23 Oct, 2008
2 commits
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Change header guards named "ASM_X86__*" to "_ASM_X86_*" since:
a. the double underscore is ugly and pointless.
b. no leading underscore violates namespace constraints.Signed-off-by: H. Peter Anvin
-
Signed-off-by: Al Viro
Signed-off-by: H. Peter Anvin
