linux-kernel - Re: [PATCH 01/17] libtracefs: Added new API tracefs

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Message-ID: <YQY/72DgV7nBRQqw@lx-t490>
Date:   Sun, 1 Aug 2021 08:32:15 +0200
From:   "Ahmed S. Darwish" <a.darwish@...utronix.de>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     linux-trace-devel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Tom Zanussi <zanussi@...nel.org>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-rt-users <linux-rt-users@...r.kernel.org>,
        Clark Williams <williams@...hat.com>
Subject: Re: [PATCH 01/17] libtracefs: Added new API tracefs_sql()

On Fri, Jul 30, 2021, Steven Rostedt wrote:
>
> Currently it only supports simple SQL of the type:
>
>   SELECT start.common_pid AS pid, end.common_timestamp.usecs AS usecs
>     FROM sched_waking AS start on sched_switch AS end
                                 ^
                                 JOIN
>     ON start.pid = end.next_pid
>