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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-09-15 08:00:37 -1000 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-09-15 08:00:37 -1000 |
| commit | 4314daa55b4ddc2dc1c28a3835b484de33ffbfdd (patch) | |
| tree | 584e5077160abcbf4d13eb03ff42ed58d87c1a90 /kernel/sched/debug.c | |
| parent | c0be92b5b14bc6928363527602dabff57875473a (diff) | |
| parent | 882a78a9f39f5535b209b4aa0a1741e35b8c67fb (diff) | |
Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
"Misc fixes: various scheduler metrics corner case fixes, a
sched_features deadlock fix, and a topology fix for certain NUMA
systems"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: Fix kernel-doc notation warning
sched/fair: Fix load_balance redo for !imbalance
sched/fair: Fix scale_rt_capacity() for SMT
sched/fair: Fix vruntime_normalized() for remote non-migration wakeup
sched/pelt: Fix update_blocked_averages() for RT and DL classes
sched/topology: Set correct NUMA topology type
sched/debug: Fix potential deadlock when writing to sched_features
Diffstat (limited to 'kernel/sched/debug.c')
| -rw-r--r-- | kernel/sched/debug.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c index 60caf1fb94e0..6383aa6a60ca 100644 --- a/kernel/sched/debug.c +++ b/kernel/sched/debug.c @@ -89,12 +89,12 @@ struct static_key sched_feat_keys[__SCHED_FEAT_NR] = { static void sched_feat_disable(int i) { - static_key_disable(&sched_feat_keys[i]); + static_key_disable_cpuslocked(&sched_feat_keys[i]); } static void sched_feat_enable(int i) { - static_key_enable(&sched_feat_keys[i]); + static_key_enable_cpuslocked(&sched_feat_keys[i]); } #else static void sched_feat_disable(int i) { }; @@ -146,9 +146,11 @@ sched_feat_write(struct file *filp, const char __user *ubuf, /* Ensure the static_key remains in a consistent state */ inode = file_inode(filp); + cpus_read_lock(); inode_lock(inode); ret = sched_feat_set(cmp); inode_unlock(inode); + cpus_read_unlock(); if (ret < 0) return ret; |