From 1d84267480ce8cf9943b79b70da86ddb3f95e3dd Mon Sep 17 00:00:00 2001
From: Wu Zhangjin <wuzhangjin@gmail.com>
Date: Fri, 7 May 2010 01:03:49 +0800
Subject: MIPS: Oprofile: Fixup of loongson2_exit()
When exiting from loongson2_exit(), we need to reset the counter
register too, this patch adds a function reset_counters() to do it, by
the way, this function will be shared by Perf.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1199/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
arch/mips/oprofile/op_model_loongson2.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
(limited to 'arch')
diff --git a/arch/mips/oprofile/op_model_loongson2.c b/arch/mips/oprofile/op_model_loongson2.c
index d0d24e047676..60d3ea602118 100644
--- a/arch/mips/oprofile/op_model_loongson2.c
+++ b/arch/mips/oprofile/op_model_loongson2.c
@@ -43,6 +43,12 @@ static struct loongson2_register_config {
static char *oprofid = "LoongsonPerf";
static irqreturn_t loongson2_perfcount_handler(int irq, void *dev_id);
+static void reset_counters(void *arg)
+{
+ write_c0_perfctrl(0);
+ write_c0_perfcnt(0);
+}
+
static void loongson2_reg_setup(struct op_counter_config *cfg)
{
unsigned int ctrl = 0;
@@ -139,7 +145,7 @@ static int __init loongson2_init(void)
static void loongson2_exit(void)
{
- write_c0_perfctrl(0);
+ reset_counters(NULL);
free_irq(LOONGSON2_PERFCNT_IRQ, oprofid);
}
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