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authorRalf Baechle <ralf@linux-mips.org>2005-12-09 12:29:38 +0000
committer <ralf@denk.linux-mips.net>2006-01-10 13:39:07 +0000
commitba339c03e2e8ede8ccd37ed6c4e564e3b1545495 (patch)
tree1a7bbfd15a9c46d5300d2d5a1890d748b81dbce2 /arch/mips/mips-boards/generic/time.c
parent0401572a9b9b2f368176b6e53f53004fd048a566 (diff)
MIPS: Oprofile: Fixup the loose ends in the plumbing.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/mips-boards/generic/time.c')
-rw-r--r--arch/mips/mips-boards/generic/time.c20
1 files changed, 17 insertions, 3 deletions
diff --git a/arch/mips/mips-boards/generic/time.c b/arch/mips/mips-boards/generic/time.c
index 2830f656fe2..93f3bf2c2b2 100644
--- a/arch/mips/mips-boards/generic/time.c
+++ b/arch/mips/mips-boards/generic/time.c
@@ -75,16 +75,29 @@ 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)
{
+ 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.
*/
- 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 {
/* Everyone else needs to reset the timer int here as
@@ -101,6 +114,7 @@ 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;
}