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| author | Dimitri Sivanich <sivanich@sgi.com> | 2009-04-15 11:56:25 -0400 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2009-04-16 14:51:35 -0400 |
| commit | edb91dc01a216e84b78721b71a06db1e0db141b7 (patch) | |
| tree | 9e030d23e6ccac225bce132d4bd5017720d8cfc8 /Documentation/unaligned-memory-access.txt | |
| parent | c4cb768f027706b3a0190309416b13f07114fe56 (diff) | |
[IA64] smp_flush_tlb_mm() should only send IPI's to cpus in cpu_vm_mask
Having flush_tlb_mm->smp_flush_tlb_mm() send an IPI to every cpu
on the system is occasionally triggering spin_lock contention in
generic_smp_call_function_interrupt().
Follow x86 arch's lead and only sends IPIs to the cpus in mm->cpu_vm_mask.
Experiments with this change have shown significant improvement in this
contention issue.
Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'Documentation/unaligned-memory-access.txt')
0 files changed, 0 insertions, 0 deletions