linux-kernel - Re: [PATCH perf/core v8 00/16] perf-probe --cache and SDT support

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Date:	Fri, 20 May 2016 20:03:13 +0900
From:	Masami Hiramatsu <mhiramat@...nel.org>
To:	Hemant Kumar <hemant@...ux.vnet.ibm.com>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	linux-kernel@...r.kernel.org, Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	Ananth N Mavinakayanahalli <ananth@...ux.vnet.ibm.com>,
	Brendan Gregg <brendan.d.gregg@...il.com>
Subject: Re: [PATCH perf/core v8 00/16] perf-probe --cache and SDT support

On Fri, 20 May 2016 10:21:09 +0530
Hemant Kumar <hemant@...ux.vnet.ibm.com> wrote:

> 
> 
> On 05/15/2016 08:49 AM, Masami Hiramatsu wrote:
> > Hi,
> >
> > Here is the 8th version of the patchset for probe-cache and
> > initial SDT support.
> >
> > The previous version is here; https://lkml.org/lkml/2016/5/11/446
> >
> > This version I droped the second patch in v7 because it may
> > involves unintended behavior change and we'd better discuss it
> > out of this series. I also added comments why we can't use
> > access(R_OK) for /proc/kcore.
> >
> > Hemant, could you review and test this series so that we can
> > proceed to your patch depending on this?
> 
> So, apart from the two issues which I mentioned in
> the individual patches, it seems fine.

Thanks! I'll fix those issues and send v9.

> However, I think we will need a bit detailed documentation for the
> probe cache feature as well as for the SDT support, given that we
> have different commands to add {probe,sdt} events for a binary
> and use them. I will write that that doc up based on your next
> version.

Would you mean updating Documentation/perf-probe.txt?
Anyway it is welcome your contribution!

Thank you,


> 
> >
> > Thank you,
> >
> > ---
> >
> > Hemant Kumar (1):
> >        perf/sdt: ELF support for SDT
> >
> > Masami Hiramatsu (15):
> >        perf buildid: Introduce DSO__NAME_KALLSYMS and DSO__NAME_KCORE
> >        perf symbol: Cleanup the code flow of dso__find_kallsyms
> >        perf-buildid-cache: Use path/to/bin/buildid/elf instead of path/to/bin/buildid
> >        perf probe: Add --cache option to cache the probe definitions
> >        perf probe: Use cache entry if possible
> >        perf probe: Show all cached probes
> >        perf probe: Remove caches when --cache is given
> >        perf probe: Add group name support
> >        perf buildid-cache: Scan and import user SDT events to probe cache
> >        perf probe: Accept %sdt and %cached event name
> >        perf-list: Show SDT and pre-cached events
> >        perf-list: Skip SDTs placed in invalid binaries
> >        perf probe: Allow wildcard for cached events
> >        perf probe: Support @BUILDID or @FILE suffix for SDT events
> >        perf probe: Support a special SDT probe format
> >
> >
> >   tools/perf/Documentation/perf-probe.txt |   26 +-
> >   tools/perf/builtin-buildid-cache.c      |    8
> >   tools/perf/builtin-list.c               |    4
> >   tools/perf/builtin-probe.c              |   30 ++
> >   tools/perf/util/annotate.c              |    2
> >   tools/perf/util/build-id.c              |  295 ++++++++++++++++--
> >   tools/perf/util/build-id.h              |    8
> >   tools/perf/util/dso.h                   |    5
> >   tools/perf/util/machine.c               |    2
> >   tools/perf/util/parse-events.c          |   83 +++++
> >   tools/perf/util/parse-events.h          |    2
> >   tools/perf/util/probe-event.c           |  492 +++++++++++++++++++++++++++---
> >   tools/perf/util/probe-event.h           |    7
> >   tools/perf/util/probe-file.c            |  502 +++++++++++++++++++++++++++++++
> >   tools/perf/util/probe-file.h            |   41 +++
> >   tools/perf/util/symbol-elf.c            |  252 ++++++++++++++++
> >   tools/perf/util/symbol.c                |   73 ++---
> >   tools/perf/util/symbol.h                |   25 ++
> >   18 files changed, 1719 insertions(+), 138 deletions(-)
> >
> > --
> > Masami Hiramatsu
> >
> 
> -- 
> Thanks,
> Hemant Kumar
> 


-- 
Masami Hiramatsu <mhiramat@...nel.org>