SGI UV cpumask: use static temp cpumask in flush_tlb

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Impact: Improve tlb flush performance for UV

Calling alloc_cpumask_var a zillion times a second does affect
performance.  Replace with static cpumask.

Note: when CONFIG_X86_UV is defined, this extra PER_CPU memory
will be optimized out for non-UV configs as is_uv_system() will
then return a constant 0.

Signed-off-by: Mike Travis <travis@sgi.com>

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Mike Travis 2009-01-10 21:58:10 -08:00 • committed by Ingo Molnar

parent 4595f9620c

commit 0e21990ae7

1 changed files with 11 additions and 10 deletions

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arch/x86/kernel/tlb_64.c

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