On Mon, 30 May 2016 13:30:53 -0300 Arnaldo Carvalho de Melo <a...@kernel.org> wrote:
> Em Mon, May 30, 2016 at 01:22:52PM -0300, Arnaldo Carvalho de Melo escreveu: > > Em Sun, May 29, 2016 at 12:15:01AM +0900, Masami Hiramatsu escreveu: > > > Hi, > > > > > > Here is the 9th version of the patchset for probe-cache and > > > initial SDT support. > > > > Ok, for completeness sake: Where does one learn more about "SDT", I > > couldn't find a description of this in this patchkit, /me goes googling > > around... > > https://sourceware.org/gdb/onlinedocs/gdb/Static-Probe-Points.html > > Some lifting of this text, giving credit and checking whatever license > it is under would help, I think. Hmm, would you mean we'd better add links(urls) in Documentation/perf-probe.txt? > Mentioning some userland components that have such "Statically Defined > Tracing" markers would also help testers to try it with this patchkit, I > saw just one or two examples here, IIRC with libc and libstdc++. Yeah, and it depends on the binary which your distro provides. Fotunately, Redhat provided binaries usually enables SDTs :) As you can see the below page, we can add a testcase for sdt in perftool itself (this also requires sdt.h provided by systemtap-devel) https://sourceware.org/systemtap/wiki/AddingUserSpaceProbingToApps Then, user can run tests to ensure it. Thank you! > > - Arnaldo > > > - Arnaldo > > > > > The previous version is here; https://lkml.org/lkml/2016/5/14/107 > > > > > > This version just fixes 2 points according to Hemant's comment, > > > and split out the filename__readable() patch. > > > > > > Changes in v9: > > > - [1/16,2/16] split out the filename__readable() > > > - [7/16] Fix to show which event is deleted. > > > - [12/16] Update list_usage to show sdt option. > > > > > > Thank you, > > > > > > --- > > > > > > Hemant Kumar (1): > > > perf/sdt: ELF support for SDT > > > > > > Masami Hiramatsu (15): > > > perf-symbol: Introduce filename__readable to check readability > > > 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-list.c | 6 > > > tools/perf/builtin-probe.c | 30 ++ > > > tools/perf/util/build-id.c | 295 ++++++++++++++++-- > > > tools/perf/util/build-id.h | 8 > > > tools/perf/util/dso.h | 5 > > > 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 | 504 > > > +++++++++++++++++++++++++++++++ > > > tools/perf/util/probe-file.h | 41 +++ > > > tools/perf/util/symbol-elf.c | 252 ++++++++++++++++ > > > tools/perf/util/symbol.c | 71 ++-- > > > tools/perf/util/symbol.h | 22 + > > > 15 files changed, 1712 insertions(+), 132 deletions(-) > > > > > > -- > > > Masami Hiramatsu -- Masami Hiramatsu <mhira...@kernel.org>
