Re: request_firmware API exhaust memory

Tomas Winkler
2010-04-25T19:22:59Z

On Sun, Apr 25, 2010 at 7:37 PM, Greg KH <greg@kroah.com> wrote:
> On Thu, Apr 22, 2010 at 01:22:51AM +0300, Tomas Winkler wrote:
>> 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.
>
> That sounds normal for the free memory.  Kay, that's also to be expected
> for the udevd forks as well, right?

Sorry maybe I was not clear what I mean that the memory will be
eventually exhausted and system will crash
Is this normal? Actually I less suspect now udevd as the same happens
on android platform where there is no udev

Tomas