[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>
diff --git a/include/linux/sched.h b/include/linux/sched.h
index b2d2dc1..41285a0 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -940,7 +940,7 @@
#else
static inline int set_cpus_allowed(task_t *p, cpumask_t new_mask)
{
- if (!cpus_intersects(new_mask, cpu_online_map))
+ if (!cpu_isset(0, new_mask))
return -EINVAL;
return 0;
}
diff --git a/kernel/sched.c b/kernel/sched.c
index 4f26c54..340dd23 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -3877,7 +3877,6 @@
#ifndef CONFIG_SMP
cpumask_t cpu_online_map = CPU_MASK_ALL;
-EXPORT_SYMBOL_GPL(cpu_online_map);
cpumask_t cpu_possible_map = CPU_MASK_ALL;
#endif
