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authorIngo Molnar <mingo@elte.hu>2008-06-09 01:45:29 -0700
committerIngo Molnar <mingo@elte.hu>2008-06-10 14:52:14 +0200
commit040ec23d07f95285e9777a85cda29cb339a3065b (patch)
tree6069d65b11e8c1db1fe400b09d4f2f1735234ba4 /kernel/sched.c
parent34078a5e44db3cbed2e0ed580c29a39d94e0cd97 (diff)
downloadop-kernel-dev-040ec23d07f95285e9777a85cda29cb339a3065b.zip
op-kernel-dev-040ec23d07f95285e9777a85cda29cb339a3065b.tar.gz
sched: sched_clock() lockdep fix
Sitsofe Wheeler bisected the following commit to cause a lockdep to warn about itself and turn itself off: > commit c6531cce6e6e4b99bcda46b6268d6f2d9e30aea4 > Author: Ingo Molnar <mingo@elte.hu> > Date: Mon May 12 21:21:14 2008 +0200 > > sched: do not trace sched_clock do not use raw irq flags in cpu_clock() as it causes lockdep to lose track of the true state of the IRQ flag. Reported-and-bisected-by: Sitsofe Wheeler <sitsofe@yahoo.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'kernel/sched.c')
-rw-r--r--kernel/sched.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index 6590a82..b8c9fe6 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -889,7 +889,7 @@ unsigned long long notrace cpu_clock(int cpu)
unsigned long long prev_cpu_time, time, delta_time;
unsigned long flags;
- raw_local_irq_save(flags);
+ local_irq_save(flags);
prev_cpu_time = per_cpu(prev_cpu_time, cpu);
time = __cpu_clock(cpu) + per_cpu(time_offset, cpu);
delta_time = time-prev_cpu_time;
@@ -898,7 +898,7 @@ unsigned long long notrace cpu_clock(int cpu)
time = __sync_cpu_clock(time, cpu);
per_cpu(prev_cpu_time, cpu) = time;
}
- raw_local_irq_restore(flags);
+ local_irq_restore(flags);
return time;
}
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