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Message-Id: <1466481770-25290-1-git-send-email-sukadev@linux.vnet.ibm.com> Date: Mon, 20 Jun 2016 21:02:30 -0700 From: Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com> To: mingo@...hat.com, ak@...ux.intel.com, Michael Ellerman <mpe@...erman.id.au>, Jiri Olsa <jolsa@...hat.com>, Arnaldo Carvalho de Melo <acme@...nel.org> Cc: peterz@...radead.org, maddy@...ux.vnet.ibm.com, linuxppc-dev@...ts.ozlabs.org, <linux-kernel@...r.kernel.org> Subject: [PATCH v20 00/20] perf, tools: Add support for PMU events in JSON format CPUs support a large number of performance monitoring events (PMU events) and often these events are very specific to an architecture/model of the CPU. To use most of these PMU events with perf, we currently have to identify them by their raw codes: perf stat -e r100f2 sleep 1 This patchset allows architectures to specify these PMU events in JSON files located in 'tools/perf/pmu-events/arch/' of the mainline tree. The events from the JSON files for the architecture are then built into the perf binary. At run time, perf identifies the specific set of events for the CPU and creates "event aliases". These aliases allow users to specify events by "name" as: perf stat -e pm_1plus_ppc_cmpl sleep 1 The file, 'tools/perf/pmu-events/README' in [PATCH 16/16] gives more details. Note: - All known events tables for the architecture are included in the perf binary. - For architectures that don't have any JSON files, an empty mapping table is created and they should continue to build. Thanks to input from Andi Kleen, Jiri Olsa, Namhyung Kim and Ingo Molnar. These patches are available from: https://github.com/sukadev/linux.git Branch Description ------------------------------------------------------ json-code-v20 Source Code only json-data-v20 x86 and Powerpc datafiles only json-code+data-v20 Both code and data (for build/test) NOTE: Only "source code" patches (i.e those in json-code-v20) are being emailed. Please pull the "data files" from the json-data-v20 branch. Changelog[v20] - Rebase to recent perf/core - Add Patch 20/20 to allow perf-stat to work with the period= field Changelog[v19] Rebase to recent perf/core; fix couple lines >80 chars. Changelog[v18] Rebase to recent perf/core; fix minor merge conflicts. Changelog[v17] Rebase to recent perf/core; couple of small fixes to processing Intel JSON files; allow case-insensitive PMU event names. Changelog[v16] Rebase to recent perf/core; fix minor merge conflicts; drop 3 patches that were merged into perf/core. Changelog[v15] Code changes: - Fix 'perf list' usage string and update man page. - Remove a redundant __maybe_unused tag. - Rebase to recent perf/core branch. Data files updates: json-files-5 branch - Rebase to perf/intel-json-files-5 from Andi Kleen - Add patch from Madhavan Srinivasan for couple more Powerpc models Changelog[v14] Comments from Jiri Olsa: - Change parameter name/type for pmu_add_cpu_aliases (from void *data to list_head *head) - Use asprintf() in file_name_to_tablename() and simplify/reorg code. - Use __weak definition from <linux/compile.h> - Use fopen() with mode "w" and eliminate unlink() - Remove minor TODO. - Add error check for return value from strdup() in print_pmu_events(). - Move independent changes from patches 3,11,12 .. to separate patches for easier review/backport. - Clarify mapfile's "header line support" in patch description. - Fix build failure with DEBUG=1 Comment from Andi Kleen: - In tools/perf/pmu-events/Build, check for 'mapfile.csv' rather than 'mapfile*' Misc: - Minor changes/clarifications to tools/perf/pmu-events/README. Changelog[v13] Version: Individual patches have their own history :-) that I am preserving. Patchset version (v13) is for overall patchset and is somewhat arbitrary. - Added support for "categories" of events to perf - Add mapfile, jevents build dependency on pmu-events.c - Silence jevents when parsing JSON files unless V=1 is specified - Cleanup error messages - Fix memory leak with ->cpuid - Rebase to Arnaldo's tree - Allow overriding CPUID via environment variable - Support long descriptions for events - Handle header line in mapfile.csv - Cleanup JSON files (trim PublicDescription if identical to/prefix of BriefDescription field) Andi Kleen (12): perf, tools: Add jsmn `jasmine' JSON parser perf, tools, jevents: Program to convert JSON file to C style file perf, tools: Support CPU id matching for x86 v2 perf, tools: Support alias descriptions perf, tools: Query terminal width and use in perf list perf, tools: Add a --no-desc flag to perf list perf, tools: Add override support for event list CPUID perf, tools: Add support for event list topics perf, tools: Handle header line in mapfile perf, tools: Make alias matching case-insensitive perf, tools, pmu-events: Fix fixed counters on Intel perf, tools, pmu-events: Add Skylake frontend MSR support Sukadev Bhattiprolu (8): perf, tools: Use pmu_events table to create aliases perf, tools: Support CPU ID matching for Powerpc perf, tools, jevents: Add support for long descriptions perf, tools: Add alias support for long descriptions perf, tools: Support long descriptions with perf list perf, tools, jevents: Add support for event topics perf, tools: Add README for info on parsing JSON/map files Allow period= in perf stat CPU event descriptions. tools/lib/subcmd/pager.c | 15 + tools/lib/subcmd/pager.h | 1 + tools/perf/Documentation/perf-list.txt | 12 +- tools/perf/Makefile.perf | 26 +- tools/perf/arch/powerpc/util/header.c | 11 + tools/perf/arch/x86/util/header.c | 24 +- tools/perf/builtin-list.c | 20 +- tools/perf/pmu-events/Build | 11 + tools/perf/pmu-events/README | 122 ++++++ tools/perf/pmu-events/jevents.c | 737 +++++++++++++++++++++++++++++++++ tools/perf/pmu-events/jevents.h | 18 + tools/perf/pmu-events/jsmn.c | 313 ++++++++++++++ tools/perf/pmu-events/jsmn.h | 67 +++ tools/perf/pmu-events/json.c | 162 ++++++++ tools/perf/pmu-events/json.h | 39 ++ tools/perf/pmu-events/pmu-events.h | 37 ++ tools/perf/util/header.h | 1 + tools/perf/util/parse-events.c | 8 +- tools/perf/util/parse-events.h | 3 +- tools/perf/util/pmu.c | 177 +++++++- tools/perf/util/pmu.h | 6 +- 21 files changed, 1775 insertions(+), 35 deletions(-) create mode 100644 tools/perf/pmu-events/Build create mode 100644 tools/perf/pmu-events/README create mode 100644 tools/perf/pmu-events/jevents.c create mode 100644 tools/perf/pmu-events/jevents.h create mode 100644 tools/perf/pmu-events/jsmn.c create mode 100644 tools/perf/pmu-events/jsmn.h create mode 100644 tools/perf/pmu-events/json.c create mode 100644 tools/perf/pmu-events/json.h create mode 100644 tools/perf/pmu-events/pmu-events.h -- 2.5.3
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