linux-kernel - Re: [PATCHSET 00/10] perf tools: Support dynamic sort keys for tracepoints (v3)

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Message-ID: <20160104211746.GD15669@kernel.org>
Date:	Mon, 4 Jan 2016 18:17:46 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Jiri Olsa <jolsa@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Andi Kleen <andi@...stfloor.org>,
	Wang Nan <wangnan0@...wei.com>
Subject: Re: [PATCHSET 00/10] perf tools: Support dynamic sort keys for
 tracepoints (v3)

Em Mon, Dec 21, 2015 at 11:26:43PM +0900, Namhyung Kim escreveu:
> Hello,
> 
> This is an attempt to improve perf to deal with tracepoint events
> better.  The perf tools can handle tracepoint events but perf report
> on them is less useful since they're always sampled in a fixed
> location and not provide event specific info.  We can use perf script
> but I always wishes there's more convenient way to see the result.
> 
>  * changes in v3)
>   - save trace_output for dynamic entries  (Jiri)
>   - update field length for each entry

Thanks, applied, I made a few changes, related to libtraceevent function
names, split a patch in two, please take a look at my perf/core branch,
should all be ok.

Ah, please consider looking for field names directly, i.e. make this
work for a kmem:kmalloc event:

    perf report -s comm,gfp_flags

:-)

I think this can get mapped even when multiple events are available,
i.e. use that for the events that have such a field.

It could even get more relaxed, like:

    perf report -s comm,flags

No?

- Arnaldo
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