diff options
Diffstat (limited to 'arch/um/kernel/irq.c')
| -rw-r--r-- | arch/um/kernel/irq.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c index d69d137a0334..f4b13f15a9c1 100644 --- a/arch/um/kernel/irq.c +++ b/arch/um/kernel/irq.c @@ -22,6 +22,9 @@ #include <irq_kern.h> #include <linux/time-internal.h> +DEFINE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat); + +#define irq_stats(x) (&per_cpu(irq_stat, x)) /* When epoll triggers we do not know why it did so * we can also have different IRQs for read and write. @@ -683,7 +686,7 @@ void __init init_IRQ(void) { int i; - irq_set_chip_and_handler(TIMER_IRQ, &alarm_irq_type, handle_edge_irq); + irq_set_chip_and_handler(TIMER_IRQ, &alarm_irq_type, handle_percpu_irq); for (i = 1; i < UM_LAST_SIGNAL_IRQ; i++) irq_set_chip_and_handler(i, &normal_irq_type, handle_edge_irq); @@ -701,3 +704,25 @@ void sigchld_handler(int sig, struct siginfo *unused_si, { do_IRQ(SIGCHLD_IRQ, regs); } + +/* + * /proc/interrupts printing for arch specific interrupts + */ +int arch_show_interrupts(struct seq_file *p, int prec) +{ +#if IS_ENABLED(CONFIG_SMP) + int cpu; + + seq_printf(p, "%*s: ", prec, "RES"); + for_each_online_cpu(cpu) + seq_printf(p, "%10u ", irq_stats(cpu)->irq_resched_count); + seq_puts(p, " Rescheduling interrupts\n"); + + seq_printf(p, "%*s: ", prec, "CAL"); + for_each_online_cpu(cpu) + seq_printf(p, "%10u ", irq_stats(cpu)->irq_call_count); + seq_puts(p, " Function call interrupts\n"); +#endif + + return 0; +} |