From: Andrew Morton <akpm@osdl.org>
Date: Thu, 7 Dec 2006 04:38:16 +0000 (-0800)
Subject: [PATCH] smp_call_function_single() check that local interrupts are enabled
X-Git-Tag: v2.6.20-rc1~145^2^2~137
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a38a44c1a93078fc5fadc4ac2df8dea4697069e2;p=pandora-kernel.git

[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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