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Subject[PATCH 0/7] perf/x86-ibs and tools: Add support for AMD IBS
Date
This patch set adds perf tool support for AMD IBS. Mostly perf tool
patches, but

perf/x86-ibs: Add support for IBS pseudo events

includes kernel changes.

It basically implements:

* General perf tool support for dynamically allocated pmus,
* Support for IBS pseudo events,
* perf-script support for IBS (updated version).

With this patches there is the possibility to add pmu handler code for
a specific pmu. If a pmu with handler code is listed in sysfs, it is
activated and can be used with perf tools. E.g. perf-list shows
available events of this pmu and the event parser of perf-record is
able to setup profiling for that particular pmu. This mechanism is
used to implement pmus for ibs (ibs_op/ibs_fetch).

IBS pseudo events are derived from an IBS sample and determined
through a combination of one or more IBS event flags or values.
E.g. one could profile mispredicted branches with ibs using such
pseudo events:

# perf record -a -e ibs_op:MISPREDICTED_BRANCH ...

This is implemented with kernel side filtering of ibs samples by
passing filter settings to the kernel (attr.config1/config2).

I also attached an updated version of my previously posted patch that
implements perf-script support for ibs. This is usefull for a user to
dump raw ibs samples. The script can be used by the user as a basis
for a script that post-processes ibs samples.

Changes can be pulled from kernel.org and are available in the git
repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile.git perf-ibs

-Robert


Robert Richter (7):
perf tools: Fix generation of pmu list
perf tools: Add basic dynamic PMU support
perf tools: Add parser for dynamic PMU events
perf/x86-ibs: Add support for IBS pseudo events
perf, tools: Add raw event support for dynamic allocated pmus
perf tools: Add pmu mappings to header information
perf script: Add script to collect and display IBS samples

arch/x86/kernel/cpu/perf_event_amd_ibs.c | 83 ++++++-
tools/perf/Makefile | 1 +
tools/perf/scripts/perl/bin/ibs-record | 23 ++
tools/perf/scripts/perl/bin/ibs-report | 6 +
tools/perf/scripts/perl/ibs.pl | 47 ++++
tools/perf/util/header.c | 78 ++++++
tools/perf/util/header.h | 1 +
tools/perf/util/parse-events.c | 45 +++-
tools/perf/util/parse-events.h | 4 +-
tools/perf/util/parse-events.y | 11 +-
tools/perf/util/pmu-ibs.c | 419 ++++++++++++++++++++++++++++++
tools/perf/util/pmu.c | 102 +++++++-
tools/perf/util/pmu.h | 19 ++
13 files changed, 828 insertions(+), 11 deletions(-)
create mode 100644 tools/perf/scripts/perl/bin/ibs-record
create mode 100644 tools/perf/scripts/perl/bin/ibs-report
create mode 100644 tools/perf/scripts/perl/ibs.pl
create mode 100644 tools/perf/util/pmu-ibs.c

--
1.7.8.4




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