Subject: x86-no-perf-irq-work-rt.patch From: Thomas Gleixner Date: Wed, 13 Jul 2011 14:05:05 +0200 Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz Signed-off-by: Thomas Gleixner --- arch/x86/kernel/irq_work.c | 2 ++ kernel/irq_work.c | 5 ++++- kernel/timer.c | 6 +++++- 3 files changed, 11 insertions(+), 2 deletions(-) --- a/arch/x86/kernel/irq_work.c +++ b/arch/x86/kernel/irq_work.c @@ -18,6 +18,7 @@ void smp_irq_work_interrupt(struct pt_re irq_exit(); } +#ifndef CONFIG_PREEMPT_RT_FULL void arch_irq_work_raise(void) { #ifdef CONFIG_X86_LOCAL_APIC @@ -28,3 +29,4 @@ void arch_irq_work_raise(void) apic_wait_icr_idle(); #endif } +#endif --- a/kernel/irq_work.c +++ b/kernel/irq_work.c @@ -119,8 +119,9 @@ static void __irq_work_run(void) if (llist_empty(this_list)) return; +#ifndef CONFIG_PREEMPT_RT_FULL BUG_ON(!irqs_disabled()); - +#endif llnode = llist_del_all(this_list); while (llnode != NULL) { work = llist_entry(llnode, struct irq_work, llnode); @@ -152,7 +153,9 @@ static void __irq_work_run(void) */ void irq_work_run(void) { +#ifndef CONFIG_PREEMPT_RT_FULL BUG_ON(!in_irq()); +#endif __irq_work_run(); } EXPORT_SYMBOL_GPL(irq_work_run); --- a/kernel/timer.c +++ b/kernel/timer.c @@ -1425,7 +1425,7 @@ void update_process_times(int user_tick) scheduler_tick(); run_local_timers(); rcu_check_callbacks(cpu, user_tick); -#ifdef CONFIG_IRQ_WORK +#if defined(CONFIG_IRQ_WORK) && !defined(CONFIG_PREEMPT_RT_FULL) if (in_irq()) irq_work_run(); #endif @@ -1439,6 +1439,10 @@ static void run_timer_softirq(struct sof { struct tvec_base *base = __this_cpu_read(tvec_bases); +#if defined(CONFIG_IRQ_WORK) && defined(CONFIG_PREEMPT_RT_FULL) + irq_work_run(); +#endif + hrtimer_run_pending(); if (time_after_eq(jiffies, base->timer_jiffies))