Re: [PATCH -tip perf/probes 00/10] x86 insn decoder bugfixes andperf-probe syntax changes

From: Masami Hiramatsu
Date: Mon Nov 02 2009 - 16:58:16 EST

Frederic Weisbecker wrote:
On Mon, Nov 02, 2009 at 04:16:25PM -0500, Masami Hiramatsu wrote:
Masami Hiramatsu wrote:
Ingo Molnar wrote:
What we want here is two fold:

- enable kprobes event support when perf events is enabled and kprobes
is enabled. We dont want another config option for it.

Sure, at least that combination should enable kprobe-tracer forcibly.

Hmm, someone may not want to enables kprobe-tracer. Perhaps,
"default y if (EVENT_PROFILE)" is enough, isn't it?

I guess it should be sufficient yeah. We want to strongly recommend
the kprobe events if we have enabled perf, but we don't want to force

Also in this case we need a verbose runtime report of the lack of this
tracer in debugfs from perf probe if needed.

Sure, error message should be changed as warning user to enable

Thank you,

Masami Hiramatsu

Software Engineer
Hitachi Computer Products (America), Inc.
Software Solutions Division

e-mail: mhiramat@xxxxxxxxxx

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