Re: [PATCH 3/3] selftests: add readfile(2) selftests

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On Sun, Jul 05, 2020 at 01:24:07PM +0200, Geert Uytterhoeven wrote:
> Hi Greg,
> 
> On Sun, Jul 5, 2020 at 8:55 AM Greg Kroah-Hartman
> <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> > On Sat, Jul 04, 2020 at 08:38:26PM +0200, Geert Uytterhoeven wrote:
> > > On Sat, Jul 4, 2020 at 4:05 PM Greg Kroah-Hartman
> > > <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> > > > Test the functionality of readfile(2) in various ways.
> > > >
> > > > Also provide a simple speed test program to benchmark using readfile()
> > > > instead of using open()/read()/close().
> > > >
> > > > Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> 
> > > > --- /dev/null
> > > > +++ b/tools/testing/selftests/readfile/readfile.c
> > >
> > > > +static void readfile(const char *filename)
> > > > +{
> > > > +//     int root_fd;
> > >
> > > ???
> >
> > Ugh, sorry about that, I obviously didn't clean up my last tests from
> > this file, thanks for catching that.
> 
> Reading about seq_file behavior, did the commented-out test for
> "/sys/kernel/debug/usb/devices" work?

Yes it did, which means I need to go dig to try to find a "problem"
seq_file procfs file to try to debug that behavior...

thanks,

greg k-h



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