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authorThomas Gleixner <tglx@linutronix.de>2009-07-25 18:56:56 +0200
committerIngo Molnar <mingo@elte.hu>2011-09-13 11:11:55 +0200
commitee30a7b2fc072f139dac44826860d2c1f422137c (patch)
tree4f11173879b25cc31822cb0a8d9dbd48395e74bc /kernel/sched_stats.h
parent07354eb1a74d1e1ece29f8bafe0b46e8c77a95ef (diff)
downloadop-kernel-dev-ee30a7b2fc072f139dac44826860d2c1f422137c.zip
op-kernel-dev-ee30a7b2fc072f139dac44826860d2c1f422137c.tar.gz
locking, sched: Annotate thread_group_cputimer as raw
The thread_group_cputimer lock can be taken in atomic context and therefore cannot be preempted on -rt - annotate it. In mainline this change documents the low level nature of the lock - otherwise there's no functional difference. Lockdep and Sparse checking will work as usual. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched_stats.h')
-rw-r--r--kernel/sched_stats.h12
1 files changed, 6 insertions, 6 deletions
diff --git a/kernel/sched_stats.h b/kernel/sched_stats.h
index 331e01b..87f9e36 100644
--- a/kernel/sched_stats.h
+++ b/kernel/sched_stats.h
@@ -282,10 +282,10 @@ static inline void account_group_user_time(struct task_struct *tsk,
if (!cputimer->running)
return;
- spin_lock(&cputimer->lock);
+ raw_spin_lock(&cputimer->lock);
cputimer->cputime.utime =
cputime_add(cputimer->cputime.utime, cputime);
- spin_unlock(&cputimer->lock);
+ raw_spin_unlock(&cputimer->lock);
}
/**
@@ -306,10 +306,10 @@ static inline void account_group_system_time(struct task_struct *tsk,
if (!cputimer->running)
return;
- spin_lock(&cputimer->lock);
+ raw_spin_lock(&cputimer->lock);
cputimer->cputime.stime =
cputime_add(cputimer->cputime.stime, cputime);
- spin_unlock(&cputimer->lock);
+ raw_spin_unlock(&cputimer->lock);
}
/**
@@ -330,7 +330,7 @@ static inline void account_group_exec_runtime(struct task_struct *tsk,
if (!cputimer->running)
return;
- spin_lock(&cputimer->lock);
+ raw_spin_lock(&cputimer->lock);
cputimer->cputime.sum_exec_runtime += ns;
- spin_unlock(&cputimer->lock);
+ raw_spin_unlock(&cputimer->lock);
}
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