diff options
Diffstat (limited to 'arch/mips/mips-boards/generic/time.c')
| -rw-r--r-- | arch/mips/mips-boards/generic/time.c | 33 |
1 files changed, 18 insertions, 15 deletions
diff --git a/arch/mips/mips-boards/generic/time.c b/arch/mips/mips-boards/generic/time.c index 72a12d931cbac1..93f3bf2c2b2236 100644 --- a/arch/mips/mips-boards/generic/time.c +++ b/arch/mips/mips-boards/generic/time.c @@ -75,20 +75,31 @@ static void mips_timer_dispatch (struct pt_regs *regs) do_IRQ (mips_cpu_timer_irq, regs); } +extern int null_perf_irq(struct pt_regs *regs); + +extern int (*perf_irq)(struct pt_regs *regs); + irqreturn_t mips_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) { -#ifdef CONFIG_SMP + int r2 = cpu_has_mips_r2; int cpu = smp_processor_id(); if (cpu == 0) { /* - * CPU 0 handles the global timer interrupt job and process accounting - * resets count/compare registers to trigger next timer int. + * CPU 0 handles the global timer interrupt job and process + * accounting resets count/compare registers to trigger next + * timer int. */ - (void) timer_interrupt(irq, dev_id, regs); + if (!r2 || (read_c0_cause() & (1 << 26))) + if (perf_irq(regs)) + goto out; + + /* we keep interrupt disabled all the time */ + if (!r2 || (read_c0_cause() & (1 << 30))) + timer_interrupt(irq, NULL, regs); + scroll_display_message(); - } - else { + } else { /* Everyone else needs to reset the timer int here as ll_local_timer_interrupt doesn't */ /* @@ -103,16 +114,8 @@ irqreturn_t mips_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) local_timer_interrupt (irq, dev_id, regs); } +out: return IRQ_HANDLED; -#else - irqreturn_t r; - - r = timer_interrupt(irq, dev_id, regs); - - scroll_display_message(); - - return r; -#endif } /* |