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| author | Ingo Molnar <mingo@elte.hu> | 2007-07-09 18:51:59 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2007-07-09 18:51:59 +0200 |
| commit | e05606d3301525aa67b081ad9fccade2b31ab35a (patch) | |
| tree | 2a3e5a477dfca70ce32f3ea8dbc5e16034c98c23 /kernel | |
| parent | 138a8aeb5b9e5c5abd5e5ec22b6d1848e7e9c50b (diff) | |
| download | lwn-e05606d3301525aa67b081ad9fccade2b31ab35a.tar.gz lwn-e05606d3301525aa67b081ad9fccade2b31ab35a.zip | |
sched: clean up the rt priority macros
clean up the rt priority macros, pointed out by Andrew Morton.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/exit.c | 2 | ||||
| -rw-r--r-- | kernel/sched.c | 22 |
2 files changed, 18 insertions, 6 deletions
diff --git a/kernel/exit.c b/kernel/exit.c index 6c7699240327..8fd7acd7bbd0 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -290,7 +290,7 @@ static void reparent_to_kthreadd(void) /* Set the exit signal to SIGCHLD so we signal init on exit */ current->exit_signal = SIGCHLD; - if (!has_rt_policy(current) && (task_nice(current) < 0)) + if (task_nice(current) < 0) set_user_nice(current, 0); /* cpus_allowed? */ /* rt_priority? */ diff --git a/kernel/sched.c b/kernel/sched.c index d9ed9274bf0a..53c0ee742f69 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -220,6 +220,18 @@ static inline unsigned int task_timeslice(struct task_struct *p) return static_prio_timeslice(p->static_prio); } +static inline int rt_policy(int policy) +{ + if (unlikely(policy == SCHED_FIFO) || unlikely(policy == SCHED_RR)) + return 1; + return 0; +} + +static inline int task_has_rt_policy(struct task_struct *p) +{ + return rt_policy(p->policy); +} + /* * This is the priority-queue data structure of the RT scheduling class: */ @@ -698,7 +710,7 @@ static inline int __normal_prio(struct task_struct *p) static void set_load_weight(struct task_struct *p) { - if (has_rt_policy(p)) { + if (task_has_rt_policy(p)) { #ifdef CONFIG_SMP if (p == task_rq(p)->migration_thread) /* @@ -749,7 +761,7 @@ static inline int normal_prio(struct task_struct *p) { int prio; - if (has_rt_policy(p)) + if (task_has_rt_policy(p)) prio = MAX_RT_PRIO-1 - p->rt_priority; else prio = __normal_prio(p); @@ -4051,7 +4063,7 @@ void set_user_nice(struct task_struct *p, long nice) * it wont have any effect on scheduling until the task is * not SCHED_NORMAL/SCHED_BATCH: */ - if (has_rt_policy(p)) { + if (task_has_rt_policy(p)) { p->static_prio = NICE_TO_PRIO(nice); goto out_unlock; } @@ -4240,14 +4252,14 @@ recheck: (p->mm && param->sched_priority > MAX_USER_RT_PRIO-1) || (!p->mm && param->sched_priority > MAX_RT_PRIO-1)) return -EINVAL; - if (is_rt_policy(policy) != (param->sched_priority != 0)) + if (rt_policy(policy) != (param->sched_priority != 0)) return -EINVAL; /* * Allow unprivileged RT tasks to decrease priority: */ if (!capable(CAP_SYS_NICE)) { - if (is_rt_policy(policy)) { + if (rt_policy(policy)) { unsigned long rlim_rtprio; unsigned long flags; |