tree c4d4723124706254bc105ba4715ed69576368662
parent bd232f97b30f6bb630efa136a777647545db3039
author Rusty Russell <rusty@rustcorp.com.au> 1230766947 +1030
committer Rusty Russell <rusty@rustcorp.com.au> 1230766947 +1030

cpumask: convert kernel/profile.c

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>