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authorAndrew Morton <akpm@osdl.org>2006-12-06 20:38:16 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-07 08:39:39 -0800
commita38a44c1a93078fc5fadc4ac2df8dea4697069e2 (patch)
tree03ad860836722b803a02a58d5e988fb9f9b883fc /block
parent83df8db9e62129975fab6d800fb381faf0dfee74 (diff)
downloadlinux-linaro-stable-a38a44c1a93078fc5fadc4ac2df8dea4697069e2.tar.gz
[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>
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