forked from Minki/linux
[PATCH] sched: hardcode non-smp set_cpus_allowed
Simplify the UP (1 CPU) implementatin of set_cpus_allowed. The one CPU is hardcoded to be cpu 0 - so just test for that bit, and avoid having to pick up the cpu_online_map. Also, unexport cpu_online_map: it was only needed for set_cpus_allowed(). Signed-off-by: Paul Jackson <pj@sgi.com> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -940,7 +940,7 @@ extern int set_cpus_allowed(task_t *p, cpumask_t new_mask);
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#else
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static inline int set_cpus_allowed(task_t *p, cpumask_t new_mask)
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{
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if (!cpus_intersects(new_mask, cpu_online_map))
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if (!cpu_isset(0, new_mask))
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return -EINVAL;
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return 0;
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}
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@ -3877,7 +3877,6 @@ EXPORT_SYMBOL(cpu_present_map);
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#ifndef CONFIG_SMP
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cpumask_t cpu_online_map = CPU_MASK_ALL;
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EXPORT_SYMBOL_GPL(cpu_online_map);
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cpumask_t cpu_possible_map = CPU_MASK_ALL;
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#endif
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