Re: [BUGFIX PATCH v3 4/4] selftests/ftrace: Fix multiple kprobe testcase

From: Steven Rostedt
Date: Mon Nov 25 2019 - 09:49:22 EST


On Mon, 25 Nov 2019 15:57:27 +0900
Masami Hiramatsu <mhiramat@xxxxxxxxxx> wrote:

> Fix multiple kprobe event testcase to work it correctly.
> There are 2 bugfixes.
> - Since `wc -l FILE` returns not only line number but also
> FILE filename, following "if" statement always failed.
> Fix this bug by replacing it with 'cat FILE | wc -l'
> - Since "while do-done loop" block with pipeline becomes a
> subshell, $N local variable is not update outside of
> the loop.
> Fix this bug by using actual target number (256) instead
> of $N.
>
> Signed-off-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx>

Reviewed-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx>

-- Steve