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Commit 1d842674 authored by Wu Zhangjin's avatar Wu Zhangjin Committed by Ralf Baechle
Browse files

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: default avatarWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1199/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 2e93d1ec

arch/mips/oprofile/op_model_loongson2.c

+7 −1
Original line number Diff line number Diff line
@@ -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);

}