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| author | Takashi Iwai <tiwai@suse.de> | 2014-11-04 14:02:40 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2014-11-04 14:09:16 +0100 |
| commit | 2b30d411dbc6eddfb5b4f9afd5a2c57b6f4dd96c (patch) | |
| tree | 02f9efaa6a39b5579eb3f708435ef743b2ab4d09 /include/sound/pcm.h | |
| parent | ALSA: pcm: Replace PCM hwptr tracking with tracepoints (diff) | |
| download | linux-2b30d411dbc6eddfb5b4f9afd5a2c57b6f4dd96c.tar.xz linux-2b30d411dbc6eddfb5b4f9afd5a2c57b6f4dd96c.zip | |
ALSA: pcm: Add xrun_injection proc entry
This patch adds a new proc entry for PCM substreams to inject an
XRUN. When a PCM substream is running and any value is written to its
xrun_injection proc file, the driver triggers XRUN. This is a useful
feature for debugging XRUN and error handling code paths.
Note that this entry is enabled only when CONFIG_SND_PCM_XRUN_DEBUG is
set.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound/pcm.h')
| -rw-r--r-- | include/sound/pcm.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h index 29eb09ef2969..0b8daeed0a33 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -416,7 +416,10 @@ struct snd_pcm_substream { struct snd_info_entry *proc_status_entry; struct snd_info_entry *proc_prealloc_entry; struct snd_info_entry *proc_prealloc_max_entry; +#ifdef CONFIG_SND_PCM_XRUN_DEBUG + struct snd_info_entry *proc_xrun_injection_entry; #endif +#endif /* CONFIG_SND_VERBOSE_PROCFS */ /* misc flags */ unsigned int hw_opened: 1; }; |