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Diffstat (limited to 'arch/mips/mips-boards/generic/time.c')
-rw-r--r--arch/mips/mips-boards/generic/time.c33
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 72a12d931cba..93f3bf2c2b22 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
}
/*