diff options
Diffstat (limited to 'debian/patches-rt/0287-sched-deadline-Ensure-inactive_timer-runs-in-hardirq.patch')
| -rw-r--r-- | debian/patches-rt/0287-sched-deadline-Ensure-inactive_timer-runs-in-hardirq.patch | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/debian/patches-rt/0287-sched-deadline-Ensure-inactive_timer-runs-in-hardirq.patch b/debian/patches-rt/0287-sched-deadline-Ensure-inactive_timer-runs-in-hardirq.patch new file mode 100644 index 000000000..b3668b2fe --- /dev/null +++ b/debian/patches-rt/0287-sched-deadline-Ensure-inactive_timer-runs-in-hardirq.patch @@ -0,0 +1,46 @@ +From: Juri Lelli <juri.lelli@redhat.com> +Date: Wed, 31 Jul 2019 12:37:15 +0200 +Subject: [PATCH 287/342] sched/deadline: Ensure inactive_timer runs in hardirq + context +Origin: https://git.kernel.org/cgit/linux/kernel/git/rt/linux-stable-rt.git/commit?id=428e3bd4726ac6ebbd987f67871d11fcb95f8369 + +[ Upstream commit ba94e7aed7405c58251b1380e6e7d73aa8284b41 ] + +SCHED_DEADLINE inactive timer needs to run in hardirq context (as +dl_task_timer already does) on PREEMPT_RT + +Change the mode to HRTIMER_MODE_REL_HARD. + +[ tglx: Fixed up the start site, so mode debugging works ] + +Signed-off-by: Juri Lelli <juri.lelli@redhat.com> +Signed-off-by: Thomas Gleixner <tglx@linutronix.de> +Link: https://lkml.kernel.org/r/20190731103715.4047-1-juri.lelli@redhat.com +Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> +--- + kernel/sched/deadline.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c +index 1a285367081c..0bc1bad199c1 100644 +--- a/kernel/sched/deadline.c ++++ b/kernel/sched/deadline.c +@@ -287,7 +287,7 @@ static void task_non_contending(struct task_struct *p) + + dl_se->dl_non_contending = 1; + get_task_struct(p); +- hrtimer_start(timer, ns_to_ktime(zerolag_time), HRTIMER_MODE_REL); ++ hrtimer_start(timer, ns_to_ktime(zerolag_time), HRTIMER_MODE_REL_HARD); + } + + static void task_contending(struct sched_dl_entity *dl_se, int flags) +@@ -1325,7 +1325,7 @@ void init_dl_inactive_task_timer(struct sched_dl_entity *dl_se) + { + struct hrtimer *timer = &dl_se->inactive_timer; + +- hrtimer_init(timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); ++ hrtimer_init(timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_HARD); + timer->function = inactive_task_timer; + } + |