[LTP] [PATCH] read_all_sys: skip debugfs

[Jan Stancek]

----- Original Message -----
> Hi!
> > debugfs is meant for debugging, it exposes also device registers
> > and can pretty much do anything:
> >   https://lore.kernel.org/linux-arm-kernel/1507592549.3785589.1570404050459.JavaMail.zimbra@redhat.com/
> >   https://lore.kernel.org/stable/2029139028.10333037.1572874551626.JavaMail.zimbra@redhat.com/
> > 
> > Signed-off-by: Jan Stancek <jstancek@redhat.com>
> > ---
> >  runtest/fs | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/runtest/fs b/runtest/fs
> > index 07d6e2b67964..fba19cae03e8 100644
> > --- a/runtest/fs
> > +++ b/runtest/fs
> > @@ -71,7 +71,7 @@ proc01 proc01 -m 128
> >  
> >  read_all_dev read_all -d /dev -p -q -r 10
> >  read_all_proc read_all -d /proc -q -r 10
> > -read_all_sys read_all -d /sys -q -r 10 -e /sys/power/wakeup_count
> > +read_all_sys read_all -d /sys -q -r 10 -e /sys/power/wakeup_count -e
> > '/sys/kernel/debug/*'
> 
> Do we even support multiple parameters for the same option?
> 
> I looked that the library code and I would say that we will replace the
> value with each iteration which means that we will effectively use the
> last one.

That is good point. Do we actually need to store blacklist as cmdline parameters?