From: Al Viro <viro@ZenIV.linux.org.uk>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: robert.foss@collabora.com, mingo@redhat.com, scott@ubuntu.com,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [PACTH v1] trace: Add trace events for open(), exec() and uselib()
Date: Mon, 1 Aug 2016 19:13:54 +0100 [thread overview]
Message-ID: <20160801181354.GC2356@ZenIV.linux.org.uk> (raw)
In-Reply-To: <20160801134453.549968a6@gandalf.local.home>
On Mon, Aug 01, 2016 at 01:44:53PM -0400, Steven Rostedt wrote:
> On Mon, 1 Aug 2016 13:25:40 -0400
> robert.foss@collabora.com wrote:
>
> > From: Scott James Remnant <scott@ubuntu.com>
> >
> > This patch uses TRACE_EVENT to add tracepoints for the open(),
> > exec() and uselib() syscalls so that ureadahead can cheaply trace
> > the boot sequence to determine what to read to speed up the next.
> >
>
> Good luck. AFAIK, Viro refuses to have tracepoints in the vfs subsystem.
Damn right. Somebody wants to use those as private debugging patches -
sure, that's what the mechanism is good for. Just keep them in your
test builds, where *you* will be responsible for keeping them working, etc.
next prev parent reply other threads:[~2016-08-01 18:14 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-01 17:25 [PACTH v1] trace: Add trace events for open(), exec() and uselib() robert.foss
2016-08-01 17:44 ` Steven Rostedt
2016-08-01 18:13 ` Al Viro [this message]
2016-08-01 18:10 ` Al Viro
2016-08-01 19:51 ` Robert Foss
2016-08-01 20:31 ` Steven Rostedt
2016-08-02 8:11 ` Ingo Molnar
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