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authorClemens Ladisch <clemens@ladisch.de>2009-11-10 10:14:04 +0100
committerTakashi Iwai <tiwai@suse.de>2009-11-10 16:32:38 +0100
commit7584af10cf46e0f4aa1696f1be79fa0f19a945ba (patch)
treee40065330c913b3c5a79da0080444cea761816d7 /sound
parente7373b702f6eab35f315e016a4159860a7a4d686 (diff)
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')
-rw-r--r--sound/core/rawmidi.c9
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"