[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>
1 file changed