From: Ravikiran G Thirumalai <kiran@scalex86.org>
Date: Thu, 23 Mar 2006 11:00:13 +0000 (-0800)
Subject: [PATCH] Avoid taking global tasklist_lock for single threadedprocess at getrusage()
X-Git-Tag: v2.6.17-rc1~1063
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2dd0ebcd2ab7b18a50c0810ddb45a84316e4ee2e;p=pandora-kernel.git

[PATCH] Avoid taking global tasklist_lock for single threadedprocess at getrusage()

Avoid taking the global tasklist_lock when possible, if a process is single
threaded during getrusage().  Any avoidance of tasklist_lock is good for
NUMA boxes (and possibly for large SMPs).  Thanks to Oleg Nesterov for
review and suggestions.

Signed-off-by: Nippun Goel <nippung@calsoftinc.com>
Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: Shai Fultheim <shai@scalex86.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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