tree 03ad860836722b803a02a58d5e988fb9f9b883fc
parent 83df8db9e62129975fab6d800fb381faf0dfee74
author Andrew Morton <akpm@osdl.org> 1165466296 -0800
committer Linus Torvalds <torvalds@woody.osdl.org> 1165509579 -0800

[PATCH] smp_call_function_single() check that local interrupts are enabled

smp_call_function_single() can deadlock if the caller disabled local
interrupts (the target CPU could be spinning on call_lock).  Check for that.

Why on earth do these functions use spin_lock_bh()??

Cc: "Randy.Dunlap" <rdunlap@xenotime.net>
Cc: Andi Kleen <ak@suse.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>