sched: convert struct (sys_)sched_setaffinity() to cpumask_var_t.

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Impact: stack usage reduction

Dynamically allocating cpumasks (when CONFIG_CPUMASK_OFFSTACK) saves
space on the stack.  cpumask_var_t is just a struct cpumask for
!CONFIG_CPUMASK_OFFSTACK.

Note the removal of the initializer of new_mask: since the first thing
we did was "cpus_and(new_mask, new_mask, cpus_allowed)" I just changed
that to "cpumask_and(new_mask, in_mask, cpus_allowed);".

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Rusty Russell 2008-11-25 02:35:11 +10:30 • committed by Ingo Molnar

parent e76bd8d985

commit 5a16f3d30c

1 changed files with 27 additions and 13 deletions

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kernel/sched.c

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