diff options
| author | Clemens Ladisch <clemens@ladisch.de> | 2009-11-10 12:14:04 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-11-10 18:32:38 +0300 |
| commit | 7584af10cf46e0f4aa1696f1be79fa0f19a945ba (patch) | |
| tree | e40065330c913b3c5a79da0080444cea761816d7 /sound/core/rawmidi.c | |
| parent | e7373b702f6eab35f315e016a4159860a7a4d686 (diff) | |
| download | linux-7584af10cf46e0f4aa1696f1be79fa0f19a945ba.tar.xz | |
sound: rawmidi: record a substream's owner process
Record the pid of the task that opened a RawMIDI substream.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/rawmidi.c')
| -rw-r--r-- | sound/core/rawmidi.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c index 818b1299ed91..2f766123b158 100644 --- a/sound/core/rawmidi.c +++ b/sound/core/rawmidi.c @@ -278,6 +278,7 @@ static int open_substream(struct snd_rawmidi *rmidi, substream->active_sensing = 0; if (mode & SNDRV_RAWMIDI_LFLG_APPEND) substream->append = 1; + substream->pid = get_pid(task_pid(current)); rmidi->streams[substream->stream].substream_opened++; } substream->use_count++; @@ -488,6 +489,8 @@ static void close_substream(struct snd_rawmidi *rmidi, snd_rawmidi_runtime_free(substream); substream->opened = 0; substream->append = 0; + put_pid(substream->pid); + substream->pid = NULL; rmidi->streams[substream->stream].substream_opened--; } @@ -1336,6 +1339,9 @@ static void snd_rawmidi_proc_info_read(struct snd_info_entry *entry, substream->number, (unsigned long) substream->bytes); if (substream->opened) { + snd_iprintf(buffer, + " Owner PID : %d\n", + pid_vnr(substream->pid)); runtime = substream->runtime; snd_iprintf(buffer, " Mode : %s\n" @@ -1357,6 +1363,9 @@ static void snd_rawmidi_proc_info_read(struct snd_info_entry *entry, substream->number, (unsigned long) substream->bytes); if (substream->opened) { + snd_iprintf(buffer, + " Owner PID : %d\n", + pid_vnr(substream->pid)); runtime = substream->runtime; snd_iprintf(buffer, " Buffer size : %lu\n" |