diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-15 20:31:55 -0500 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-15 20:31:55 -0500 |
commit | 9b6c4ea95ff87464e012f70b119601de9e94deac (patch) | |
tree | 5dc1d4c9ea990bdf01a9f3c42965f9bc5bf0d47d /kernel | |
parent | 93a11c8f5cc642571071a1609a83998db1373077 (diff) | |
parent | 7a06c41cbec33c6dbe7eec575c61986122617408 (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.c | 6 |
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 | ||