From: H. Peter Anvin <hpa@zytor.com>
Date: Tue, 26 Aug 2008 00:07:14 +0000 (-0700)
Subject: smp: have smp_call_function_single() detect invalid CPUs
X-Git-Tag: v2.6.27-rc5~5^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f73be6dedf4fa058ce80846dae604b08fa805ca1;p=pandora-kernel.git

smp: have smp_call_function_single() detect invalid CPUs

Have smp_call_function_single() return invalid CPU indicies and return
-ENXIO.  This function is already executed inside a
get_cpu()..put_cpu() which locks out CPU removal, so rather than
having the higher layers doing another layer of locking to guard
against unplugged CPUs do the test here.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
---

Reading git-diff-tree failed