diff options
| -rw-r--r-- | include/linux/irq_work.h | 2 | ||||
| -rw-r--r-- | kernel/irq_work.c | 11 | ||||
| -rw-r--r-- | kernel/smp.c | 1 |
3 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/irq_work.h b/include/linux/irq_work.h index c5afd053ae32..7184e1273965 100644 --- a/include/linux/irq_work.h +++ b/include/linux/irq_work.h @@ -59,6 +59,7 @@ void irq_work_sync(struct irq_work *work); #include <asm/irq_work.h> void irq_work_run(void); +void irq_work_run_cpu(unsigned int cpu); bool irq_work_needs_cpu(void); void irq_work_single(void *arg); @@ -67,6 +68,7 @@ void arch_irq_work_raise(void); #else static inline bool irq_work_needs_cpu(void) { return false; } static inline void irq_work_run(void) { } +static inline void irq_work_run_cpu(unsigned int cpu) { } static inline void irq_work_single(void *arg) { } #endif diff --git a/kernel/irq_work.c b/kernel/irq_work.c index 9f19c05c9962..73eabcbdcd50 100644 --- a/kernel/irq_work.c +++ b/kernel/irq_work.c @@ -263,6 +263,17 @@ void irq_work_run(void) } EXPORT_SYMBOL_GPL(irq_work_run); +void irq_work_run_cpu(unsigned int cpu) +{ + if (WARN_ON_ONCE(!cpumask_test_cpu(cpu, cpu_dying_mask))) + return; + + if (!IS_ENABLED(CONFIG_PREEMPT_RT)) + return; + + irq_work_run_list(per_cpu_ptr(&lazy_list, cpu)); +} + void irq_work_tick(void) { struct llist_head *raised = this_cpu_ptr(&raised_list); diff --git a/kernel/smp.c b/kernel/smp.c index b696bcc60c08..8f530a094c30 100644 --- a/kernel/smp.c +++ b/kernel/smp.c @@ -87,6 +87,7 @@ int smpcfd_dead_cpu(unsigned int cpu) free_cpumask_var(cfd->cpumask); free_cpumask_var(cfd->cpumask_ipi); + irq_work_run_cpu(cpu); return 0; } |