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| author |   Peter Zijlstra <a.p.zijlstra@chello.nl> | 2008-01-25 21:08:32 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2008-01-25 21:08:32 +0100 |
| commit | 5a52dd50091b6a6e710a1293db741028f8cc5aac (patch) | |
| tree | ea2b361909e431c458c26208e501ea3cf10edd85 | |
| parent | sched: rt-group: reduce rescheduling (diff) | |
| download | linux-dev-5a52dd50091b6a6e710a1293db741028f8cc5aac.tar.xz linux-dev-5a52dd50091b6a6e710a1293db741028f8cc5aac.zip | |
sched: rt-watchdog: fix .rlim_max = RLIM_INFINITY
Remove the curious logic to set it_sched_expires in the future. It useless
because rt.timeout wouldn't be incremented anyway.
Explicity check for RLIM_INFINITY as a test programm that had a 1s soft limit
and a inf hard limit would SIGKILL at 1s. This is because RLIM_INFINITY+d-1
is d-2.
Signed-off-by: Peter Zijlsta <a.p.zijlstra@chello.nl>
CC: Michal Schmidt <mschmidt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | kernel/posix-cpu-timers.c | 3 | ||||
| -rw-r--r-- | kernel/sched_rt.c | 8 |
2 files changed, 3 insertions, 8 deletions
diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c index 2c076b36c4f6..0b7c82ac467e 100644 --- a/kernel/posix-cpu-timers.c +++ b/kernel/posix-cpu-timers.c @@ -1020,7 +1020,8 @@ static void check_thread_timers(struct task_struct *tsk, unsigned long hard = sig->rlim[RLIMIT_RTTIME].rlim_max; unsigned long *soft = &sig->rlim[RLIMIT_RTTIME].rlim_cur; - if (tsk->rt.timeout > DIV_ROUND_UP(hard, USEC_PER_SEC/HZ)) { + if (hard != RLIM_INFINITY && + tsk->rt.timeout > DIV_ROUND_UP(hard, USEC_PER_SEC/HZ)) { /* * At the hard limit, we just die. * No need to calculate anything else now. diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c index f1f215db3bd0..2dac5ebb8bcb 100644 --- a/kernel/sched_rt.c +++ b/kernel/sched_rt.c @@ -1125,13 +1125,7 @@ static void watchdog(struct rq *rq, struct task_struct *p) p->rt.timeout++; next = DIV_ROUND_UP(min(soft, hard), USEC_PER_SEC/HZ); - if (next > p->rt.timeout) { - u64 next_time = p->se.sum_exec_runtime; - - next_time += next * (NSEC_PER_SEC/HZ); - if (p->it_sched_expires > next_time) - p->it_sched_expires = next_time; - } else + if (p->rt.timeout > next) p->it_sched_expires = p->se.sum_exec_runtime; } } |