Messages in this thread | | | Date | Thu, 22 Apr 2010 01:22:51 +0300 | Subject | Re: request_firmware API exhaust memory | From | Tomas Winkler <> |
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On Mon, Apr 19, 2010 at 5:59 PM, Greg KH <greg@kroah.com> wrote: > On Mon, Apr 19, 2010 at 03:20:34PM +0300, Tomas Winkler wrote: >> Lately we've been developing a device that rather more extensively >> used request_firmware API in load and also using pm_notifiers to load >> firmware. > > Do you have a pointer to your driver source anywhere that shows how you > are trying to use the firmware api in this manner?
I've attached a very simple test driver I'm using. Just wanted to eliminate anything else. Bellow is a little script that loads and releases the firmware. My previous observation was wrong. The free memory gradually decreases regardless of number or dangling udevd forks, which are eventually collected if the sleep period is long enough ~10s.
testfw=${1:-test-fw600k.fw} count=${2:-100} s=${3:-10} for ((i=0; i<$count ; i++)) ; do echo -n $testfw > /sys/devices/platform/fw-test/load_fw echo -n 1 > /sys/devices/platform/fw-test/release_fw sleep $s grep MemFree /proc/meminfo | awk '{print $2}' ps auxwww | grep udevd | wc -l done
Thanks Tomas [unhandled content-type:application/octet-stream] | |