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authorIngo Molnar <mingo@elte.hu>2007-09-05 14:32:49 +0200
committerIngo Molnar <mingo@elte.hu>2007-09-05 14:32:49 +0200
commita0dc72601d48b171b4870dfdd0824901a2b2b1a9 (patch)
tree25a8ee03d5d85f8138af5c6df558646989357376 /kernel
parent7fd0d2dde929ead79901e389e70dbfb3c6c06986 (diff)
downloadlinux-linaro-a0dc72601d48b171b4870dfdd0824901a2b2b1a9.tar.gz
sched: fix niced_granularity() shift
fix niced_granularity(). This resulted in under-scheduling for CPU-bound negative nice level tasks (and this in turn caused higher than necessary latencies in nice-0 tasks). Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/sched_fair.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index ce39282d9c0..810b52d994e 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -291,7 +291,7 @@ niced_granularity(struct sched_entity *curr, unsigned long granularity)
/*
* It will always fit into 'long':
*/
- return (long) (tmp >> WMULT_SHIFT);
+ return (long) (tmp >> (WMULT_SHIFT-NICE_0_SHIFT));
}
static inline void