From: Mathieu Poirier <mathieu.poirier@linaro.org>
To: acme@kernel.org
Cc: acme@infradead.org, peterz@infradead.org, jolsa@kernel.org,
mingo@redhat.com, alexander.shishkin@linux.intel.com,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH V7 0/5] perf: Driver specific configuration for PMU
Date: Tue, 30 Aug 2016 10:19:20 -0600 [thread overview]
Message-ID: <1472573965-3881-1-git-send-email-mathieu.poirier@linaro.org> (raw)
Original blurb:
---------------
This patchset adds the possiblity of specifying PMU driver configuration
directly from the perf command line. Anything that falls within the
event specifiers '/.../' and that is preceded by the '@' symbol is
treated as a configurable. Two formats are supported, @cfg and
@cfg=config.
For example:
perf record -e some_event/@cfg1/ ...
or
perf record -e some_event/@cfg2=config/ ...
or
perf record -e some_event/@cfg1,@cfg2=config/ ...
The above are all valid configuration and will see the strings 'cfg1'
and 'cfg2=config' sent to the PMU driver for parsing and interpretation
using the existing ioctl() mechanism.
The primary customers for this feature are the CoreSight drivers where
the selection of a sink (where trace data is accumulated) needs to be
done in a previous, and separated step, from the launching of the perf
command.
As such something that used to be a two-step process:
# echo 1 > /sys/bus/coresight/devices/20070000.etr/enable_sink
# perf record -e cs_etm//u --per-thread uname
is integrated in a single command:
# perf record -e cs_etm/@20070000.etr/u --per-thread uname
Thanks,
Mathieu
Changes for V7:
- Got rid of a miscellaneous debug message.
- Rebased to v4.8-rc4
- Added Jiri Olsa's Acked-by.
Changes for V6:
- Using sysFS rather than an ioctl() to communicate command line
parameters to the CoreSight PMU.
Changes for V5:
- Made commit log in 5/9 more descriptive.
- Addressed missing return code in builtin-top.c.
- Overhauled the kernel portion to do parsing in the core.
Changes for V4:
- Pushing PMU driver configuration for 'perf top'.
- Rebased to the latest perf/core branch[1].
Changes for V3:
- Added comment for function drv_str() that explains the reason for
keeping the entire token intact.
- Added driver config terms to the existing list of config terms.
- Added documenation for driver specific configuration.
- Pushing PMU driver configuration for 'perf stat' as well.
- Preventing users from selecting a sink from sysFS _and_ perf.
Changes for V2:
- Rebased to [1] as per Jiri's request.
Mathieu Poirier (5):
perf tools: making coresight PMU listable
perf tools: adding coresight etm PMU record capabilities
perf tools: add infrastructure for PMU specific configuration
perf tools: Pushing configuration down to PMU driver
perf tools: adding sink configuration for cs_etm PMU
MAINTAINERS | 5 +
tools/perf/Documentation/perf-record.txt | 12 +
tools/perf/Makefile.config | 11 +-
tools/perf/arch/arm/util/Build | 2 +
tools/perf/arch/arm/util/auxtrace.c | 54 +++
tools/perf/arch/arm/util/cs-etm.c | 615 +++++++++++++++++++++++++++++++
tools/perf/arch/arm/util/cs-etm.h | 26 ++
tools/perf/arch/arm/util/pmu.c | 37 ++
tools/perf/arch/arm64/util/Build | 4 +
tools/perf/builtin-record.c | 9 +
tools/perf/builtin-stat.c | 8 +
tools/perf/builtin-top.c | 12 +
tools/perf/util/auxtrace.c | 1 +
tools/perf/util/auxtrace.h | 1 +
tools/perf/util/cs-etm.h | 74 ++++
tools/perf/util/evlist.c | 18 +
tools/perf/util/evlist.h | 3 +
tools/perf/util/evsel.c | 40 ++
tools/perf/util/evsel.h | 4 +
tools/perf/util/parse-events.c | 7 +-
tools/perf/util/parse-events.h | 1 +
tools/perf/util/parse-events.l | 22 ++
tools/perf/util/parse-events.y | 11 +
tools/perf/util/pmu.h | 2 +
24 files changed, 974 insertions(+), 5 deletions(-)
create mode 100644 tools/perf/arch/arm/util/auxtrace.c
create mode 100644 tools/perf/arch/arm/util/cs-etm.c
create mode 100644 tools/perf/arch/arm/util/cs-etm.h
create mode 100644 tools/perf/arch/arm/util/pmu.c
create mode 100644 tools/perf/util/cs-etm.h
--
2.7.4
next reply other threads:[~2016-08-30 16:19 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-30 16:19 Mathieu Poirier [this message]
2016-08-30 16:19 ` [PATCH V7 1/5] perf tools: making coresight PMU listable Mathieu Poirier
2016-08-30 16:19 ` [PATCH V7 2/5] perf tools: adding coresight etm PMU record capabilities Mathieu Poirier
2016-08-30 16:19 ` [PATCH V7 3/5] perf tools: add infrastructure for PMU specific configuration Mathieu Poirier
2016-08-30 16:19 ` [PATCH V7 4/5] perf tools: Pushing configuration down to PMU driver Mathieu Poirier
2016-08-30 16:19 ` [PATCH V7 5/5] perf tools: adding sink configuration for cs_etm PMU Mathieu Poirier
2016-08-31 9:37 ` Suzuki K Poulose
2016-08-31 14:14 ` Mathieu Poirier
2016-09-01 9:04 ` Suzuki K Poulose
2016-09-01 15:13 ` Mathieu Poirier
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