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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2020-03-21 12:26:02 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-03-21 16:00:24 +0100 |
| commit | 40db173965c05a1d803451240ed41707d5bd978d (patch) | |
| tree | c5629cb1e7034131b69c247d392e256be5dfc396 /include/linux/sched.h | |
| parent | de8f5e4f2dc1f032b46afda0a78cab5456974f89 (diff) | |
| download | lwn-40db173965c05a1d803451240ed41707d5bd978d.tar.gz lwn-40db173965c05a1d803451240ed41707d5bd978d.zip | |
lockdep: Add hrtimer context tracing bits
Set current->irq_config = 1 for hrtimers which are not marked to expire in
hard interrupt context during hrtimer_init(). These timers will expire in
softirq context on PREEMPT_RT.
Setting this allows lockdep to differentiate these timers. If a timer is
marked to expire in hard interrupt context then the timer callback is not
supposed to acquire a regular spinlock instead of a raw_spinlock in the
expiry callback.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200321113242.534508206@linutronix.de
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 4d3b9ecce074..933914cdf219 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -983,6 +983,7 @@ struct task_struct { unsigned int softirq_enable_event; int softirqs_enabled; int softirq_context; + int irq_config; #endif #ifdef CONFIG_LOCKDEP |