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| author | Alex Shi <alex.shi@intel.com> | 2012-06-28 09:02:24 +0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2012-06-27 19:29:14 -0700 |
| commit | effee4b9b3b0aa5770bcd98de5f672b05b27703c (patch) | |
| tree | b167657ec2ba05797b925a93e7e1b45222ac5ac3 /mm/memory.c | |
| parent | 52aec3308db85f4e9f5c8b9f5dc4fbd0138c6fa4 (diff) | |
| download | linux-next-effee4b9b3b0aa5770bcd98de5f672b05b27703c.tar.gz | |
x86/tlb: do flush_tlb_kernel_range by 'invlpg'
This patch do flush_tlb_kernel_range by 'invlpg'. The performance pay
and gain was analyzed in previous patch
(x86/flush_tlb: try flush_tlb_single one by one in flush_tlb_range).
In the testing: http://lkml.org/lkml/2012/6/21/10
The pay is mostly covered by long kernel path, but the gain is still
quite clear, memory access in user APP can increase 30+% when kernel
execute this funtion.
Signed-off-by: Alex Shi <alex.shi@intel.com>
Link: http://lkml.kernel.org/r/1340845344-27557-10-git-send-email-alex.shi@intel.com
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'mm/memory.c')
0 files changed, 0 insertions, 0 deletions