[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20190702231808.36845f83@gandalf.local.home>
Date: Tue, 2 Jul 2019 23:18:08 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: Masami Hiramatsu <mhiramat@...nel.org>
Cc: shuah <shuah@...nel.org>, Po-Hsu Lin <po-hsu.lin@...onical.com>,
mingo@...hat.com, linux-kselftest@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] selftests/ftrace: skip ftrace test if FTRACE was not
enabled
On Wed, 3 Jul 2019 12:09:53 +0900
Masami Hiramatsu <mhiramat@...nel.org> wrote:
> > Would something like that work?
>
> For older kernel, I think we'd better try to mount debugfs first.
Sure, that's pretty trivial to do. Or what I was thinking, try it if it
fails:
if [ -z "$TRACING_DIR" ]; then
save_err=$err_ret
err_ret=$err_skip
if mount -t tracefs nodev /sys/kernel/tracing; then
TRACING_DIR="/sys/kernel/tracing"
elif mount -t debugfs nodev /sys/kernel/debug; then
TRACING_DIR="/sys/kernel/debug/tracing"
else
errexit "debugfs is not configured in this kernel"
fi
if [ ! -d "$TRACING_DIR" ]; then
errexit "ftrace is not configured in this kernel"
fi
err_ret=$save_err
fi
-- Steve
Powered by blists - more mailing lists