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| author | Stefan Agner <stefan.agner@toradex.com> | 2019-06-18 14:29:35 +0200 |
|---|---|---|
| committer | Stefan Agner <stefan.agner@toradex.com> | 2019-06-18 14:29:35 +0200 |
| commit | d15d0b7a9f89cf5a905ad6802eb23100c8063939 (patch) | |
| tree | 84caa660dc73842efa29e116dcb3e32aa81a5cf0 /kernel/time/hrtimer.c | |
| parent | e9dcc568b2e968af848bbdb4267ba6cde5457b9e (diff) | |
| parent | 858848641fbecd42437e36adc9291b0ce5db379e (diff) | |
Merge tag 'v4.19.50-rt22' into toradex_4.19.y-rt
Linux 4.19.50-rt22
Diffstat (limited to 'kernel/time/hrtimer.c')
| -rw-r--r-- | kernel/time/hrtimer.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c index 851b2134e77f..e1040b80362c 100644 --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -1900,17 +1900,28 @@ COMPAT_SYSCALL_DEFINE2(nanosleep, struct compat_timespec __user *, rqtp, */ void cpu_chill(void) { - ktime_t chill_time; unsigned int freeze_flag = current->flags & PF_NOFREEZE; + struct task_struct *self = current; + ktime_t chill_time; + + raw_spin_lock_irq(&self->pi_lock); + self->saved_state = self->state; + __set_current_state_no_track(TASK_UNINTERRUPTIBLE); + raw_spin_unlock_irq(&self->pi_lock); chill_time = ktime_set(0, NSEC_PER_MSEC); - set_current_state(TASK_UNINTERRUPTIBLE); + current->flags |= PF_NOFREEZE; sleeping_lock_inc(); schedule_hrtimeout(&chill_time, HRTIMER_MODE_REL_HARD); sleeping_lock_dec(); if (!freeze_flag) current->flags &= ~PF_NOFREEZE; + + raw_spin_lock_irq(&self->pi_lock); + __set_current_state_no_track(self->saved_state); + self->saved_state = TASK_RUNNING; + raw_spin_unlock_irq(&self->pi_lock); } EXPORT_SYMBOL(cpu_chill); #endif |