From: Rusty Russell <rusty@rustcorp.com.au>
Return EINVAL for invalid sched_setaffinity on UP. I was a little
surprised that sys_sched_setaffinity for CPU 1 didn't fail on my UP box.
With CONFIG_SMP it would have.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
25-akpm/include/linux/sched.h | 3 +++
1 files changed, 3 insertions(+)
diff -puN include/linux/sched.h~sys_sched_setaffinity-on-up-should-fail-for-non-zero include/linux/sched.h
--- 25/include/linux/sched.h~sys_sched_setaffinity-on-up-should-fail-for-non-zero 2004-12-03 20:56:01.055599712 -0800
+++ 25-akpm/include/linux/sched.h 2004-12-03 20:56:01.060598952 -0800
@@ -13,6 +13,7 @@
#include <linux/rbtree.h>
#include <linux/thread_info.h>
#include <linux/cpumask.h>
+#include <linux/errno.h>
#include <asm/system.h>
#include <asm/semaphore.h>
@@ -733,6 +734,8 @@ extern int set_cpus_allowed(task_t *p, c
#else
static inline int set_cpus_allowed(task_t *p, cpumask_t new_mask)
{
+ if (!cpus_intersects(new_mask, cpu_online_map))
+ return -EINVAL;
return 0;
}
#endif
_