cpumask: convert kernel/profile.c
authorRusty Russell <rusty@rustcorp.com.au>
Wed, 31 Dec 2008 23:42:27 +0000 (09:42 +1030)
committerRusty Russell <rusty@rustcorp.com.au>
Wed, 31 Dec 2008 23:42:27 +0000 (09:42 +1030)
commitc309b917cab55799ea489d7b5f1b77025d9f8462
treec4d4723124706254bc105ba4715ed69576368662
parentbd232f97b30f6bb630efa136a777647545db3039
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>
kernel/profile.c