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| author | Frederic Weisbecker <frederic@kernel.org> | 2019-08-20 15:12:23 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-08-20 22:05:46 +0200 |
| commit | 0bee3b601b77dbe7981b5474ae8758d6bf60177a (patch) | |
| tree | bb5c920be193be0a68973d54969868b680e8ab9f /drivers/clocksource/timer-imx-sysctr.c | |
| parent | ec8f954a40da8cd3d159713b608e901f0cd909a9 (diff) | |
| download | linux-0bee3b601b77dbe7981b5474ae8758d6bf60177a.tar.bz2 | |
hrtimer: Improve comments on handling priority inversion against softirq kthread
The handling of a priority inversion between timer cancelling and a a not
well defined possible preemption of softirq kthread is not very clear.
Especially in the posix timers side it's unclear why there is a specific RT
wait callback.
All the nice explanations can be found in the initial changelog of
f61eff83cec9 (hrtimer: Prepare support for PREEMPT_RT").
Extract the detailed informations from there and put it into comments.
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20190820132656.GC2093@lenoir
Diffstat (limited to 'drivers/clocksource/timer-imx-sysctr.c')
0 files changed, 0 insertions, 0 deletions