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| author | Steven Toth <stoth@kernellabs.com> | 2010-07-31 16:18:35 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-10-21 07:55:14 -0200 |
| commit | 1247ff5c0acb0fb50b076e390bb770acc95d1d7e (patch) | |
| tree | 8b59af2d7df57c5675de0d103b22a667c1a951c8 /drivers/media/video/saa7164/saa7164-core.c | |
| parent | 0b62ceb03545099f0ab43a787cef5307b34b2fe4 (diff) | |
| download | op-kernel-dev-1247ff5c0acb0fb50b076e390bb770acc95d1d7e.zip op-kernel-dev-1247ff5c0acb0fb50b076e390bb770acc95d1d7e.tar.gz | |
[media] saa7164: monitor the RISC cpu load via a thread
Signed-off-by: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/saa7164/saa7164-core.c')
| -rw-r--r-- | drivers/media/video/saa7164/saa7164-core.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/media/video/saa7164/saa7164-core.c b/drivers/media/video/saa7164/saa7164-core.c index db4b39c..5913ed7 100644 --- a/drivers/media/video/saa7164/saa7164-core.c +++ b/drivers/media/video/saa7164/saa7164-core.c @@ -1191,6 +1191,8 @@ static int saa7164_proc_create(void) static int saa7164_thread_function(void *data) { struct saa7164_dev *dev = data; + tmFwInfoStruct_t fwinfo; + u64 last_poll_time = 0; dprintk(DBGLVL_THR, "thread started\n"); @@ -1205,8 +1207,16 @@ static int saa7164_thread_function(void *data) dprintk(DBGLVL_THR, "thread running\n"); /* Dump the firmware debug message to console */ + /* Polling this costs us 1-2% of the arm CPU */ + /* convert this into a respnde to interrupt 0x7a */ saa7164_api_collect_debug(dev); + /* Monitor CPU load every 1 second */ + if ((last_poll_time + 1000 /* ms */) < jiffies_to_msecs(jiffies)) { + saa7164_api_get_load_info(dev, &fwinfo); + last_poll_time = jiffies_to_msecs(jiffies); + } + } dprintk(DBGLVL_THR, "thread exiting\n"); |
