diff options
| author |   Ravikiran G Thirumalai <kiran@scalex86.org> | 2007-10-16 23:26:28 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-17 08:42:49 -0700 |
| commit | f13ef7754f724842dbf5ae6d85d0604fff0d1a84 (patch) | |
| tree | cb2b9d5b9bbe9650df9c8a14871302dd6a5e3193 /include/linux/fs.h | |
| parent | Remove "unsafe" from module struct (diff) | |
| download | linux-dev-f13ef7754f724842dbf5ae6d85d0604fff0d1a84.tar.xz linux-dev-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 <kiran@scalex86.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/fs.h')
0 files changed, 0 insertions, 0 deletions