diff options
| 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 /kernel/locking | |
| parent | de8f5e4f2dc1f032b46afda0a78cab5456974f89 (diff) | |
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 'kernel/locking')
| -rw-r--r-- | kernel/locking/lockdep.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c index 6b9f9f321e6d..0ebf9807d971 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -4025,7 +4025,7 @@ static int check_wait_context(struct task_struct *curr, struct held_lock *next) /* * Check if force_irqthreads will run us threaded. */ - if (curr->hardirq_threaded) + if (curr->hardirq_threaded || curr->irq_config) curr_inner = LD_WAIT_CONFIG; else curr_inner = LD_WAIT_SPIN; |