linux-kernel - Re: [PATCH] selftests/ftrace: Fix test to handle both old and new kernels

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240819152002.3ecc8100@gandalf.local.home>
Date: Mon, 19 Aug 2024 15:20:02 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: LKML <linux-kernel@...r.kernel.org>, Linux trace kernel
 <linux-trace-kernel@...r.kernel.org>
Cc: Masami Hiramatsu <mhiramat@...nel.org>, Mathieu Desnoyers
 <mathieu.desnoyers@...icios.com>, Ingo Molnar <mingo@...nel.org>, Shuah
 Khan <shuahkhan@...il.com>, Shuah Khan <shuah@...nel.org>,
 linux-kselftest@...r.kernel.org
Subject: Re: [PATCH] selftests/ftrace: Fix test to handle both old and new
 kernels

On Fri, 14 Jun 2024 12:43:22 -0400
Steven Rostedt <rostedt@...dmis.org> wrote:

> Shuah,
> 
> Can you take this through your tree?

Ping.

-- Steve

> 
> Thanks,
> 
> -- Steve
> 
> 
> On Wed, 15 May 2024 01:36:20 -0400
> Steven Rostedt <rostedt@...dmis.org> wrote:
> 
> > From: "Steven Rostedt (Google)" <rostedt@...dmis.org>
> > 
> > The function "scheduler_tick" was renamed to "sched_tick" and a selftest
> > that used that function for testing function trace filtering used that
> > function as part of the test.
> > 
> > But the change causes it to fail when run on older kernels. As tests
> > should not fail on older kernels, add a check to see which name is
> > available before testing.
> > 
> > Fixes: 86dd6c04ef9f2 ("sched/balancing: Rename scheduler_tick() => sched_tick()")
> > Signed-off-by: Steven Rostedt (Google) <rostedt@...dmis.org>
> > ---
> >  .../ftrace/test.d/ftrace/func_set_ftrace_file.tc         | 9 ++++++++-
> >  1 file changed, 8 insertions(+), 1 deletion(-)
> > 
> > diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_set_ftrace_file.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_set_ftrace_file.tc
> > index 073a748b9380..263f6b798c85 100644
> > --- a/tools/testing/selftests/ftrace/test.d/ftrace/func_set_ftrace_file.tc
> > +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_set_ftrace_file.tc
> > @@ -19,7 +19,14 @@ fail() { # mesg
> >  
> >  FILTER=set_ftrace_filter
> >  FUNC1="schedule"
> > -FUNC2="sched_tick"
> > +if grep '^sched_tick\b' available_filter_functions; then
> > +    FUNC2="sched_tick"
> > +elif grep '^scheduler_tick\b' available_filter_functions; then
> > +    FUNC2="scheduler_tick"
> > +else
> > +    exit_unresolved
> > +fi
> > +
> >  
> >  ALL_FUNCS="#### all functions enabled ####"
> >    
>