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Re: [PATCH] Oprofile: Loongson: Fixup of loongson2_exit()

To: Ralf Baechle <ralf@linux-mips.org>
Subject: Re: [PATCH] Oprofile: Loongson: Fixup of loongson2_exit()
From: Wu Zhangjin <wuzhangjin@gmail.com>
Date: Tue, 25 May 2010 11:51:50 +0800
Cc: linux-mips@linux-mips.org
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Organization: DSLab, Lanzhou University, China
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <1273165429-29766-1-git-send-email-wuzhangjin@gmail.com>
Reply-to: wuzhangjin@gmail.com
Sender: linux-mips-bounce@linux-mips.org
Hi, Ralf

Seems you have accepted this patch but forgot to apply it, could you
please apply it, thanks ;)

Best Regards,
        Wu Zhangjin

On Fri, 2010-05-07 at 01:03 +0800, Wu Zhangjin wrote:
> 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>
> ---
>  arch/mips/oprofile/op_model_loongson2.c |    8 +++++++-
>  1 files changed, 7 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/mips/oprofile/op_model_loongson2.c 
> b/arch/mips/oprofile/op_model_loongson2.c
> index fa3bf66..01f91a3 100644
> --- a/arch/mips/oprofile/op_model_loongson2.c
> +++ b/arch/mips/oprofile/op_model_loongson2.c
> @@ -51,6 +51,12 @@ static char *oprofid = "LoongsonPerf";
>  static irqreturn_t loongson2_perfcount_handler(int irq, void *dev_id);
>  /* Compute all of the registers in preparation for enabling profiling.  */
>  
> +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;
> @@ -157,7 +163,7 @@ 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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