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| author | Con Kolivas <kernel@kolivas.org> | 2005-11-09 06:38:57 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-09 16:56:32 +0100 |
| commit | dad1c65c8000f4485d8602e1875ded77e0d72133 (patch) | |
| tree | 2981648916055ac92bb809b88957ff429764dc02 /kernel | |
| parent | [PATCH] sched: change prio bias only if queued (diff) | |
| download | linux-dad1c65c8000f4485d8602e1875ded77e0d72133.tar.xz linux-dad1c65c8000f4485d8602e1875ded77e0d72133.zip | |
[PATCH] sched: account rt tasks in prio_bias()
Real time tasks' effect on prio_bias should be based on their real time
priority level instead of their static_prio which is based on nice.
Signed-off-by: Con Kolivas <kernel@kolivas.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index e1f57bd5aaa6..d9dbf8ee6ca4 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -661,21 +661,21 @@ static int effective_prio(task_t *p) } #ifdef CONFIG_SMP -static inline void inc_prio_bias(runqueue_t *rq, int static_prio) +static inline void inc_prio_bias(runqueue_t *rq, int prio) { - rq->prio_bias += MAX_PRIO - static_prio; + rq->prio_bias += MAX_PRIO - prio; } -static inline void dec_prio_bias(runqueue_t *rq, int static_prio) +static inline void dec_prio_bias(runqueue_t *rq, int prio) { - rq->prio_bias -= MAX_PRIO - static_prio; + rq->prio_bias -= MAX_PRIO - prio; } #else -static inline void inc_prio_bias(runqueue_t *rq, int static_prio) +static inline void inc_prio_bias(runqueue_t *rq, int prio) { } -static inline void dec_prio_bias(runqueue_t *rq, int static_prio) +static inline void dec_prio_bias(runqueue_t *rq, int prio) { } #endif @@ -683,13 +683,19 @@ static inline void dec_prio_bias(runqueue_t *rq, int static_prio) static inline void inc_nr_running(task_t *p, runqueue_t *rq) { rq->nr_running++; - inc_prio_bias(rq, p->static_prio); + if (rt_task(p)) + inc_prio_bias(rq, p->prio); + else + inc_prio_bias(rq, p->static_prio); } static inline void dec_nr_running(task_t *p, runqueue_t *rq) { rq->nr_running--; - dec_prio_bias(rq, p->static_prio); + if (rt_task(p)) + dec_prio_bias(rq, p->prio); + else + dec_prio_bias(rq, p->static_prio); } /* |