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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-11 22:52:48 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-11 22:52:48 -0800 |
| commit | b8bf17d311c875de02550d5ce2af66588734159a (patch) | |
| tree | 82d829df77f3eb506d10928fd633a8a6e5685082 /kernel/sched | |
| parent | 9fc5c3e3237e02a94f41cd1d2b4291593d29791d (diff) | |
| parent | bced76aeaca03b45e3b4bdb868cada328e497847 (diff) | |
| download | lwn-b8bf17d311c875de02550d5ce2af66588734159a.tar.gz lwn-b8bf17d311c875de02550d5ce2af66588734159a.zip | |
Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched: Fix lockup by limiting load-balance retries on lock-break
sched: Fix CONFIG_CGROUP_SCHED dependency
sched: Remove empty #ifdefs
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/core.c | 7 | ||||
| -rw-r--r-- | kernel/sched/fair.c | 10 |
2 files changed, 7 insertions, 10 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index cecbb64be05f..fd7b25e90079 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -7134,10 +7134,6 @@ void set_curr_task(int cpu, struct task_struct *p) #endif -#ifdef CONFIG_RT_GROUP_SCHED -#else /* !CONFIG_RT_GROUP_SCHED */ -#endif /* CONFIG_RT_GROUP_SCHED */ - #ifdef CONFIG_CGROUP_SCHED /* task_group_lock serializes the addition/removal of task groups */ static DEFINE_SPINLOCK(task_group_lock); @@ -7246,9 +7242,6 @@ void sched_move_task(struct task_struct *tsk) } #endif /* CONFIG_CGROUP_SCHED */ -#ifdef CONFIG_FAIR_GROUP_SCHED -#endif - #if defined(CONFIG_RT_GROUP_SCHED) || defined(CONFIG_CFS_BANDWIDTH) static unsigned long to_ratio(u64 period, u64 runtime) { diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 8e42de9105f8..84adb2d66cbd 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -3130,8 +3130,10 @@ task_hot(struct task_struct *p, u64 now, struct sched_domain *sd) } #define LBF_ALL_PINNED 0x01 -#define LBF_NEED_BREAK 0x02 -#define LBF_ABORT 0x04 +#define LBF_NEED_BREAK 0x02 /* clears into HAD_BREAK */ +#define LBF_HAD_BREAK 0x04 +#define LBF_HAD_BREAKS 0x0C /* count HAD_BREAKs overflows into ABORT */ +#define LBF_ABORT 0x10 /* * can_migrate_task - may task p from runqueue rq be migrated to this_cpu? @@ -4508,7 +4510,9 @@ redo: goto out_balanced; if (lb_flags & LBF_NEED_BREAK) { - lb_flags &= ~LBF_NEED_BREAK; + lb_flags += LBF_HAD_BREAK - LBF_NEED_BREAK; + if (lb_flags & LBF_ABORT) + goto out_balanced; goto redo; } |