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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/fair.c | |
| parent | 9fc5c3e3237e02a94f41cd1d2b4291593d29791d (diff) | |
| parent | bced76aeaca03b45e3b4bdb868cada328e497847 (diff) | |
| download | op-kernel-dev-b8bf17d311c875de02550d5ce2af66588734159a.zip op-kernel-dev-b8bf17d311c875de02550d5ce2af66588734159a.tar.gz | |
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/fair.c')
| -rw-r--r-- | kernel/sched/fair.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 8e42de9..84adb2d 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; } |
