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authorCyrill Gorcunov <gorcunov@gmail.com>2009-03-31 15:19:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-01 08:59:11 -0700
commita12888f772dab4bf5e6f73668dc4f5f6026a7014 (patch)
tree6a6113899ff39e58993280bb831a813a43a8e1e1 /mm
parentvmap: remove needless lock and list in vmap (diff)
downloadlinux-dev-a12888f772dab4bf5e6f73668dc4f5f6026a7014.tar.xz
linux-dev-a12888f772dab4bf5e6f73668dc4f5f6026a7014.zip
oom_kill: don't call for int_sqrt(0)
There is no need to call for int_sqrt if argument is 0. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Christoph Lameter <cl@linux-foundation.org> Acked-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/oom_kill.c12
1 files changed, 5 insertions, 7 deletions
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 40ba05061a4f..d3b9bac085b5 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -55,7 +55,7 @@ static DEFINE_SPINLOCK(zone_scan_lock);
unsigned long badness(struct task_struct *p, unsigned long uptime)
{
- unsigned long points, cpu_time, run_time, s;
+ unsigned long points, cpu_time, run_time;
struct mm_struct *mm;
struct task_struct *child;
@@ -110,12 +110,10 @@ unsigned long badness(struct task_struct *p, unsigned long uptime)
else
run_time = 0;
- s = int_sqrt(cpu_time);
- if (s)
- points /= s;
- s = int_sqrt(int_sqrt(run_time));
- if (s)
- points /= s;
+ if (cpu_time)
+ points /= int_sqrt(cpu_time);
+ if (run_time)
+ points /= int_sqrt(int_sqrt(run_time));
/*
* Niced processes are most likely less important, so double