summaryrefslogtreecommitdiffstats
path: root/kernel
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2014-01-15 20:31:55 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-15 20:31:55 -0500
commit9b6c4ea95ff87464e012f70b119601de9e94deac (patch)
tree5dc1d4c9ea990bdf01a9f3c42965f9bc5bf0d47d /kernel
parent93a11c8f5cc642571071a1609a83998db1373077 (diff)
parent7a06c41cbec33c6dbe7eec575c61986122617408 (diff)
Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Ingo Molnar: "Two fixes from lockdep coverage of seqlocks, which fix deadlocks on lockdep-enabled ARM systems" * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched_clock: Disable seqlock lockdep usage in sched_clock() seqlock: Use raw_ prefix instead of _no_lockdep
Diffstat (limited to 'kernel')
-rw-r--r--kernel/time/sched_clock.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/time/sched_clock.c b/kernel/time/sched_clock.c
index 68b799375981..0abb36464281 100644
--- a/kernel/time/sched_clock.c
+++ b/kernel/time/sched_clock.c
@@ -74,7 +74,7 @@ unsigned long long notrace sched_clock(void)
74 return cd.epoch_ns; 74 return cd.epoch_ns;
75 75
76 do { 76 do {
77 seq = read_seqcount_begin(&cd.seq); 77 seq = raw_read_seqcount_begin(&cd.seq);
78 epoch_cyc = cd.epoch_cyc; 78 epoch_cyc = cd.epoch_cyc;
79 epoch_ns = cd.epoch_ns; 79 epoch_ns = cd.epoch_ns;
80 } while (read_seqcount_retry(&cd.seq, seq)); 80 } while (read_seqcount_retry(&cd.seq, seq));
@@ -99,10 +99,10 @@ static void notrace update_sched_clock(void)
99 cd.mult, cd.shift); 99 cd.mult, cd.shift);
100 100
101 raw_local_irq_save(flags); 101 raw_local_irq_save(flags);
102 write_seqcount_begin(&cd.seq); 102 raw_write_seqcount_begin(&cd.seq);
103 cd.epoch_ns = ns; 103 cd.epoch_ns = ns;
104 cd.epoch_cyc = cyc; 104 cd.epoch_cyc = cyc;
105 write_seqcount_end(&cd.seq); 105 raw_write_seqcount_end(&cd.seq);
106 raw_local_irq_restore(flags); 106 raw_local_irq_restore(flags);
107} 107}
108 108