linux-kernel - Re: [PATCH perf/core 0/6] perf-probe: Bugfix and add new options for cache

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Date:	Tue, 04 Nov 2014 14:02:55 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	srikar@...ux.vnet.ibm.com, Peter Zijlstra <peterz@...radead.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Brendan Gregg <brendan.gregg@...il.com>,
	yrl.pp-manager.tt@...achi.com,
	Hemant Kumar <hemant@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>
Subject: Re: [PATCH perf/core 0/6] perf-probe: Bugfix and add new options for cache

Hi Arnaldo and Masami,

On Mon, 3 Nov 2014 14:19:00 -0200, Arnaldo Carvalho de Melo wrote:
> [root@zoo ~]# perf buildid-cache --hell
>   Error: unknown option `hell'
>
>  usage: perf buildid-cache [<options>]
>
>     -a, --add <file list>
>                           file(s) to add
>     -k, --kcore <file>    kcore file to add
>     -r, --remove <file list>
>                           file(s) to remove
>     -M, --missing <file>  to find missing build ids in the cache
>     -f, --force           don't complain, do it
>     -u, --update <file list>
>                           file(s) to update
>     -v, --verbose         be more verbose
>
> [root@zoo ~]#
>
> Already has support for yet another of content: kcore files, its just a matter of adding
> one more:
>
>    perf buildid-cache --probe 

But it deals with binaries, and what we need is probe points.  So maybe
it's worth add a new command like:

     perf probe-cache [add|del|enable|disable] [<options>] [<path>|<build-id>] <spec>...
  or perf probe-cache list [<options>]


This way we can handle both of kprobes and uprobes (so SDTs).  What do
you think?

Thanks,
Namhyung
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