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| author | Ravikiran G Thirumalai <[email protected]> | 2007-10-17 06:26:28 +0000 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2007-10-17 15:42:49 +0000 |
| commit | f13ef7754f724842dbf5ae6d85d0604fff0d1a84 (patch) | |
| tree | cb2b9d5b9bbe9650df9c8a14871302dd6a5e3193 /lib/argv_split.c | |
| parent | Remove "unsafe" from module struct (diff) | |
| download | kernel-f13ef7754f724842dbf5ae6d85d0604fff0d1a84.tar.gz kernel-f13ef7754f724842dbf5ae6d85d0604fff0d1a84.zip | |
report the per-irq statistics on all arches
Commit 4004c69ad68dd03733179277280ea2946990ba36 avoids too many remote cpu
references while reporting per-irq stats. Since we will not have the same
performance penalty of bringing in remote cpu cachelines while reporting
per-irq stats anymore, we can now afford to be consistent and report this
statistic on all arches, all configs.
akpm: affects ia64, alpha and ppc64, mainly.
Kiran earlier said:
Read to /proc/stat takes:
Plain: 2.622832
With speedup patch: 0.013194
With the per-irq stats commented out: 0.008124
So the performance problems which originally caused those architectures to
disable this statistic should now be fixed up.
Signed-off-by: Ravikiran Thirumalai <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: "Luck, Tony" <[email protected]>
Cc: Richard Henderson <[email protected]>
Cc: Ivan Kokshaysky <[email protected]>
Acked-by: Linus Torvalds <[email protected]>
Cc: Andi Kleen <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'lib/argv_split.c')
0 files changed, 0 insertions, 0 deletions