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| author | Eric Dumazet | 2006-03-24 12:18:10 +0100 |
|---|---|---|
| committer | Linus Torvalds | 2006-03-24 16:33:26 +0100 |
| commit | 8a14342683b1e3adcf5f78660a42fcbd95b44a35 (patch) | |
| tree | 332265cb9fe8b1e107864cdb380bf5f6b4bfb840 /mm/page-writeback.c | |
| parent | [PATCH] sound: remove PC98-specific OPL3_HW_OPL3_PC98 (diff) | |
| download | kernel-qcow2-linux-8a14342683b1e3adcf5f78660a42fcbd95b44a35.tar.gz kernel-qcow2-linux-8a14342683b1e3adcf5f78660a42fcbd95b44a35.tar.xz kernel-qcow2-linux-8a14342683b1e3adcf5f78660a42fcbd95b44a35.zip | |
[PATCH] HOTPLUG_CPU: avoid hitting too many cachelines in recalc_bh_state()
Instead of using for_each_cpu(i), we can use for_each_online_cpu(i).
When a CPU goes offline (ie removed from online map), it might have a non
null bh_accounting.nr, so this patch adds a transfer of this counter to an
online CPU counter.
We already have a hotcpu_notifier, (function buffer_cpu_notify()), where we
can do this bh_accounting.
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/page-writeback.c')
0 files changed, 0 insertions, 0 deletions