[U-Boot] [PATCH 07/16] timer: Support tracing fully

Bin Meng bmeng.cn at gmail.com
Tue Feb 16 10:21:39 CET 2016


Hi Simon,

On Mon, Feb 15, 2016 at 9:36 AM, Simon Glass <sjg at chromium.org> wrote:
> A few of the functions in the timer uclass are not marked with 'notrace'. Fix
> this so that tracing can be used with CONFIG_TRACE.
>
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
>
>  drivers/timer/timer-uclass.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/timer/timer-uclass.c b/drivers/timer/timer-uclass.c
> index 83d1a35..382c0f2 100644
> --- a/drivers/timer/timer-uclass.c
> +++ b/drivers/timer/timer-uclass.c
> @@ -22,7 +22,7 @@ DECLARE_GLOBAL_DATA_PTR;
>   * tick, and no timer interrupt.
>   */
>
> -int timer_get_count(struct udevice *dev, u64 *count)
> +int notrace timer_get_count(struct udevice *dev, u64 *count)
>  {
>         const struct timer_ops *ops = device_get_ops(dev);
>
> @@ -32,9 +32,9 @@ int timer_get_count(struct udevice *dev, u64 *count)
>         return ops->get_count(dev, count);

Besides making timer_get_count() and timer_get_rate() APIs notrace,
does it help to make the timer uclass ops notrace as well?

>  }
>
> -unsigned long timer_get_rate(struct udevice *dev)
> +unsigned long notrace timer_get_rate(struct udevice *dev)
>  {
> -       struct timer_dev_priv *uc_priv = dev_get_uclass_priv(dev);
> +       struct timer_dev_priv *uc_priv = dev->uclass_priv;

Why is this change needed?

>
>         return uc_priv->clock_rate;
>  }
> --

Regards,
Bin


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