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| author |   Thomas Gleixner <tglx@linutronix.de> | 2019-07-30 20:15:25 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-08-01 20:51:19 +0200 |
| commit | 0ab6a3ddbad40ef5b6b8c2353fd53fa4ecf9c479 (patch) | |
| tree | 335ebbdf4f72314e51e03ce182e20ac494259f06 /include/linux/hrtimer.h | |
| parent | hrtimer: Introduce HARD expiry mode (diff) | |
| download | wireguard-linux-0ab6a3ddbad40ef5b6b8c2353fd53fa4ecf9c479.tar.xz wireguard-linux-0ab6a3ddbad40ef5b6b8c2353fd53fa4ecf9c479.zip | |
hrtimer: Make enqueue mode check work on RT
hrtimer_start_range_ns() has a WARN_ONCE() which verifies that a timer
which is marker for softirq expiry is not queued in the hard interrupt base
and vice versa.
When PREEMPT_RT is enabled, timers which are not explicitely marked to
expire in hard interrupt context are deferrred to the soft interrupt. So
the regular check would trigger.
Change the check, so when PREEMPT_RT is enabled, it is verified that the
timers marked for hard interrupt expiry are not tried to be queued for soft
interrupt expiry or any of the unmarked and softirq marked is tried to be
expired in hard interrupt context.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/hrtimer.h')
| -rw-r--r-- | include/linux/hrtimer.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h index 15c2ba6b6316..7d0d0a36a8f4 100644 --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -107,6 +107,8 @@ enum hrtimer_restart { * @state: state information (See bit values above) * @is_rel: Set if the timer was armed relative * @is_soft: Set if hrtimer will be expired in soft interrupt context. + * @is_hard: Set if hrtimer will be expired in hard interrupt context + * even on RT. * * The hrtimer structure must be initialized by hrtimer_init() */ @@ -118,6 +120,7 @@ struct hrtimer { u8 state; u8 is_rel; u8 is_soft; + u8 is_hard; }; /** |