cpumask: convert kernel/profile.c

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Impact: Reduce kernel memory usage, use new cpumask API.

Avoid a static cpumask_t for prof_cpu_mask, and an on-stack cpumask_t
in prof_cpu_mask_write_proc.  Both become cpumask_var_t.

prof_cpu_mask is only allocated when profiling is on, but the NULL
checks are optimized out by gcc for the !CPUMASK_OFFSTACK case.

Also removed some strange and unnecessary casts.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

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This commit is contained in:

Rusty Russell 2009-01-01 10:12:27 +10:30

parent bd232f97b3

commit c309b917ca

1 changed files with 25 additions and 13 deletions

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kernel/profile.c

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