[alsa-devel] [PATCH 1/3] ALSA: hda - add hdac stream trace

[Takashi Iwai]

At Tue, 12 May 2015 09:43:20 +0800,
libin.yang at intel.com wrote:
> 
> From: Libin Yang <libin.yang at intel.com>
> 
> Add the trace of snd_hdac_stream_start and snd_hdac_stream_stop.
> 
> Signed-off-by: Libin Yang <libin.yang at intel.com>

Applied all three patches.  Thanks.


Takashi

> ---
>  sound/hda/hdac_stream.c |  5 +++++
>  sound/hda/trace.h       | 27 +++++++++++++++++++++++++++
>  2 files changed, 32 insertions(+)
> 
> diff --git a/sound/hda/hdac_stream.c b/sound/hda/hdac_stream.c
> index 1ba0462..52a894f 100644
> --- a/sound/hda/hdac_stream.c
> +++ b/sound/hda/hdac_stream.c
> @@ -10,6 +10,7 @@
>  #include <sound/pcm.h>
>  #include <sound/hdaudio.h>
>  #include <sound/hda_register.h>
> +#include "trace.h"
>  
>  /**
>   * snd_hdac_stream_init - initialize each stream (aka device)
> @@ -48,6 +49,8 @@ void snd_hdac_stream_start(struct hdac_stream *azx_dev, bool fresh_start)
>  {
>  	struct hdac_bus *bus = azx_dev->bus;
>  
> +	trace_snd_hdac_stream_start(bus, azx_dev);
> +
>  	azx_dev->start_wallclk = snd_hdac_chip_readl(bus, WALLCLK);
>  	if (!fresh_start)
>  		azx_dev->start_wallclk -= azx_dev->period_wallclk;
> @@ -82,6 +85,8 @@ EXPORT_SYMBOL_GPL(snd_hdac_stream_clear);
>   */
>  void snd_hdac_stream_stop(struct hdac_stream *azx_dev)
>  {
> +	trace_snd_hdac_stream_stop(azx_dev->bus, azx_dev);
> +
>  	snd_hdac_stream_clear(azx_dev);
>  	/* disable SIE */
>  	snd_hdac_chip_updatel(azx_dev->bus, INTCTL, 1 << azx_dev->index, 0);
> diff --git a/sound/hda/trace.h b/sound/hda/trace.h
> index 33a7eb5..e27e2c0 100644
> --- a/sound/hda/trace.h
> +++ b/sound/hda/trace.h
> @@ -50,6 +50,33 @@ TRACE_EVENT(hda_unsol_event,
>  	),
>  	TP_printk("%s", __get_str(msg))
>  );
> +
> +DECLARE_EVENT_CLASS(hdac_stream,
> +	TP_PROTO(struct hdac_bus *bus, struct hdac_stream *azx_dev),
> +
> +	TP_ARGS(bus, azx_dev),
> +
> +	TP_STRUCT__entry(
> +		__field(unsigned char, stream_tag)
> +	),
> +
> +	TP_fast_assign(
> +		__entry->stream_tag = (azx_dev)->stream_tag;
> +	),
> +
> +	TP_printk("stream_tag: %d", __entry->stream_tag)
> +);
> +
> +DEFINE_EVENT(hdac_stream, snd_hdac_stream_start,
> +	TP_PROTO(struct hdac_bus *bus, struct hdac_stream *azx_dev),
> +	TP_ARGS(bus, azx_dev)
> +);
> +
> +DEFINE_EVENT(hdac_stream, snd_hdac_stream_stop,
> +	TP_PROTO(struct hdac_bus *bus, struct hdac_stream *azx_dev),
> +	TP_ARGS(bus, azx_dev)
> +);
> +
>  #endif /* __HDAC_TRACE_H */
>  
>  /* This part must be outside protection */
> -- 
> 1.9.1
>