Messages in this thread | | | Subject | Re: [PATCH 09/10] dmatest: gather test results in the linked list | From | Andy Shevchenko <> | Date | Thu, 07 Nov 2013 16:37:50 +0200 |
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On Wed, 2013-11-06 at 10:11 -0800, Dan Williams wrote: > [ excuse the resend, always forget that mobile-gmail sends html by default ] > > On Wed, Nov 6, 2013 at 6:13 AM, Andy Shevchenko > <andriy.shevchenko@linux.intel.com> wrote: > > On Tue, 2013-11-05 at 11:58 -0800, Dan Williams wrote: > >> On Mon, Mar 4, 2013 at 1:09 AM, Andy Shevchenko > >> <andriy.shevchenko@linux.intel.com> wrote: > >> > The patch provides a storage for the test results in the linked list. The > >> > gathered data could be used after test is done. > >> > > >> > The new file 'results' represents gathered data of the in progress test. The > >> > messages collected are printed to the kernel log as well. > >> > > >> > Example of output: > >> > % cat /sys/kernel/debug/dmatest/results > >> > dma0chan0-copy0: #1: No errors with src_off=0x7bf dst_off=0x8ad len=0x3fea (0) > >> > > >> > The message format is unified across the different types of errors. A number in > >> > the parens represents additional information, e.g. error code, error counter, > >> > or status. > >> > > >> > Note that the buffer comparison is done in the old way, i.e. data is not > >> > collected and just printed out. > >> > > >> > >> I need to revert this to get my testing done as it just leaks memory > >> for no real benefit that I can see. Outside of making the log > >> messages have a uniform format I'm not seeing the case for this? I'll > >> revert and add a pr_fmt to make dmatest messages readily parseable. > > > > > > The benefit of it is to access to the results asynchronously as many > > times as tester wants to. > > > > tail -f /var/log/messages is also asynchronous.
It's harder to collect them by the script.
> > > Actually I wonder where you found memory leak. It keeps the result only > > for the last test run. > > In my test I hit the oom killer allocating the "OK" results.
Any description and steps you can share to reproduce your test?
-- Andy Shevchenko <andriy.shevchenko@linux.intel.com> Intel Finland Oy
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