diff options
| -rw-r--r-- | kernel/softirq.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/kernel/softirq.c b/kernel/softirq.c index 2c329f2..4202cf5 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -407,6 +407,8 @@ asmlinkage void do_softirq(void) static inline void local_bh_disable_nort(void) { local_bh_disable(); } static inline void _local_bh_enable_nort(void) { _local_bh_enable(); } +static void ksoftirqd_set_sched_params(unsigned int cpu) { } +static void ksoftirqd_clr_sched_params(unsigned int cpu, bool online) { } #else /* !PREEMPT_RT_FULL */ @@ -561,6 +563,20 @@ static int ksoftirqd_do_softirq(int cpu) static inline void local_bh_disable_nort(void) { } static inline void _local_bh_enable_nort(void) { } +static inline void ksoftirqd_set_sched_params(unsigned int cpu) +{ + struct sched_param param = { .sched_priority = 1 }; + + sched_setscheduler(current, SCHED_FIFO, ¶m); +} + +static inline void ksoftirqd_clr_sched_params(unsigned int cpu, bool online) +{ + struct sched_param param = { .sched_priority = 0 }; + + sched_setscheduler(current, SCHED_NORMAL, ¶m); +} + #endif /* PREEMPT_RT_FULL */ /* * Enter an interrupt context. @@ -1122,6 +1138,8 @@ static struct notifier_block cpu_nfb = { static struct smp_hotplug_thread softirq_threads = { .store = &ksoftirqd, + .setup = ksoftirqd_set_sched_params, + .cleanup = ksoftirqd_clr_sched_params, .thread_should_run = ksoftirqd_should_run, .thread_fn = run_ksoftirqd, .thread_comm = "ksoftirqd/%u", |