linux-kernel - Re: [PATCH 4/4 v5 RESEND] selftests: add devpts selftests

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Date:   Tue, 10 Apr 2018 11:41:36 +0200
From:   Christian Brauner <christian.brauner@...env.org>
To:     Michael Ellerman <mpe@...erman.id.au>
Cc:     Christian Brauner <christian.brauner@...ntu.com>,
        gregkh@...uxfoundation.org, containers@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, ebiederm@...ssion.com,
        torvalds@...ux-foundation.org, viro@...iv.linux.org.uk
Subject: Re: [PATCH 4/4 v5 RESEND] selftests: add devpts selftests

On Tue, Apr 10, 2018 at 07:34:36PM +1000, Michael Ellerman wrote:
> Christian Brauner <christian.brauner@...ntu.com> writes:
> > On Tue, Apr 10, 2018 at 04:20:44PM +1000, Michael Ellerman wrote:
> >> Christian Brauner <christian.brauner@...ntu.com> writes:
> >> > diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
> >> > index 7442dfb73b7f..dbda89c9d9b9 100644
> >> > --- a/tools/testing/selftests/Makefile
> >> > +++ b/tools/testing/selftests/Makefile
> >> > @@ -7,6 +7,7 @@ TARGETS += cpufreq
> >> >  TARGETS += cpu-hotplug
> >> >  TARGETS += efivarfs
> >> >  TARGETS += exec
> >> > +TARGETS += filesystems
> >>    ^ This, and ...
> >> 
> >> > diff --git a/tools/testing/selftests/filesystems/Makefile b/tools/testing/selftests/filesystems/Makefile
> >> > index 13a73bf725b5..4e6d09fb166f 100644
> >> > --- a/tools/testing/selftests/filesystems/Makefile
> >> > +++ b/tools/testing/selftests/filesystems/Makefile
> >> > @@ -1,5 +1,5 @@
> >> >  # SPDX-License-Identifier: GPL-2.0
> >> > -TEST_PROGS := dnotify_test
> >> > +TEST_PROGS := dnotify_test devpts_pts
> >>                  ^
> >>                  this ...
> >> 
> >> Have the unfortunate effect of running dnotify_test as part of the
> >> default selftest run.
> >> 
> >> dnotify_test boils down to:
> >> 
> >> 	while (1) {
> >> 		pause();
> >> 		printf("Got event on fd=%d\n", event_fd);
> >> 	}
> >> 
> >> 
> >> ie. an infinite loop :)
> >
> > Hi Michael,
> >
> > Ugh, didn't notice this before. Weird test.
> 
> No worries. It looks like it was copied from Documentation where it was
> really just sample code, rather than a test.
>  
> >> I'll send a patch to fix it.
> >
> > Excellent, you can likely route it through Greg's tty tree.
> 
> I've sent it to the kselftest list as well as Greg, so whoever wants to
> merge it is fine by me.

Perfect, thanks!
Christian