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Ian Rogers 6ed249441a perf list: Add JSON output option 
Output events and metrics in a JSON format by overriding the print
callbacks. Currently other command line options aren't supported and
metrics are repeated once per metric group.

Committer testing:

  $ perf list cache

  List of pre-defined events (to be used in -e or -M):

    L1-dcache-load-misses                              [Hardware cache event]
    L1-dcache-loads                                    [Hardware cache event]
    L1-dcache-prefetches                               [Hardware cache event]
    L1-icache-load-misses                              [Hardware cache event]
    L1-icache-loads                                    [Hardware cache event]
    branch-load-misses                                 [Hardware cache event]
    branch-loads                                       [Hardware cache event]
    dTLB-load-misses                                   [Hardware cache event]
    dTLB-loads                                         [Hardware cache event]
    iTLB-load-misses                                   [Hardware cache event]
    iTLB-loads                                         [Hardware cache event]
  $ perf list --json cache
  [
  {
          "Unit": "cache",
          "EventName": "L1-dcache-load-misses",
          "EventType": "Hardware cache event"
  },
  {
          "Unit": "cache",
          "EventName": "L1-dcache-loads",
          "EventType": "Hardware cache event"
  },
  {
          "Unit": "cache",
          "EventName": "L1-dcache-prefetches",
          "EventType": "Hardware cache event"
  },
  {
          "Unit": "cache",
          "EventName": "L1-icache-load-misses",
          "EventType": "Hardware cache event"
  },
  {
          "Unit": "cache",
          "EventName": "L1-icache-loads",
          "EventType": "Hardware cache event"
  },
  {
          "Unit": "cache",
          "EventName": "branch-load-misses",
          "EventType": "Hardware cache event"
  },
  {
          "Unit": "cache",
          "EventName": "branch-loads",
          "EventType": "Hardware cache event"
  },
  {
          "Unit": "cache",
          "EventName": "dTLB-load-misses",
          "EventType": "Hardware cache event"
  },
  {
          "Unit": "cache",
          "EventName": "dTLB-loads",
          "EventType": "Hardware cache event"
  },
  {
          "Unit": "cache",
          "EventName": "iTLB-load-misses",
          "EventType": "Hardware cache event"
  },
  {
          "Unit": "cache",
          "EventName": "iTLB-loads",
          "EventType": "Hardware cache event"
  }
  ]
  $

Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: Xin Gao <gaoxin@cdjrlc.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: http://lore.kernel.org/lkml/20221114210723.2749751-11-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 		2022-11-23 10:29:59 -03:00
..
Documentation perf list: Add JSON output option 2022-11-23 10:29:59 -03:00
arch perf cpumap: Tidy libperf includes 2022-11-16 16:00:45 -03:00
bench perf tools: Move 'struct perf_sample' to a separate header file to disentangle headers 2022-10-31 11:06:41 -03:00
dlfilters perf dlfilter dlfilter-show-cycles: Fix types for print format 2022-09-08 12:17:45 -03:00
examples/bpf perf trace: Add augmenter for clock_gettime's rqtp timespec arg 2022-11-10 15:30:10 -03:00
include/perf perf bpf: Remove now unused BPF headers 2022-11-04 11:41:48 -03:00
jvmti
…
pmu-events perf vendor events: Add Arm Neoverse V2 PMU events 2022-11-10 15:41:18 -03:00
python perf python: Convert tracepoint.py example to python3 2022-04-01 16:19:35 -03:00
scripts perf scripts python: intel-pt-events.py: Add ability interleave output 2022-10-27 16:37:26 -03:00
tests perf test: Replace data symbol test workload with datasym 2022-11-23 10:29:59 -03:00
trace perf trace: Add augmenter for clock_gettime's rqtp timespec arg 2022-11-10 15:30:10 -03:00
ui perf tools: Fix "kernel lock contention analysis" test by not printing warnings in quiet mode 2022-10-27 16:37:26 -03:00
util perf list: Reorganize to use callbacks to allow honouring command line options 2022-11-23 10:29:59 -03:00
.gitignore perf build: Install libsymbol locally when building 2022-11-16 12:17:15 -03:00
Build perf kwork: New tool to trace time properties of kernel work (such as softirq, and workqueue) 2022-07-26 16:01:24 -03:00
CREDITS
…
MANIFEST perf build: Install libsymbol locally when building 2022-11-16 12:17:15 -03:00
Makefile perf tools: Add a build-test variant to use in builds from a tarball 2021-04-20 08:43:58 -03:00
Makefile.config perf build: Use tools/lib headers from install path 2022-11-16 16:00:49 -03:00
Makefile.perf perf build: Fix LIBTRACEEVENT_DYNAMIC 2022-11-23 10:29:59 -03:00
builtin-annotate.c perf tools: Make quiet mode consistent between tools 2022-10-27 16:37:26 -03:00
builtin-bench.c perf bench: Add breakpoint benchmarks 2022-05-13 11:00:38 -03:00
builtin-buildid-cache.c perf record: Disable debuginfod by default 2022-01-15 17:41:25 -03:00
builtin-buildid-list.c perf buildid-list: Add a "-m" option to show kernel and modules build-ids 2022-07-18 16:35:34 -03:00
builtin-c2c.c perf mem/c2c: Set PERF_SAMPLE_WEIGHT for LOAD_STORE events 2022-10-06 16:29:32 -03:00
builtin-config.c
…
builtin-daemon.c perf daemon: Use sig_atomic_t to avoid UB 2022-11-03 09:35:44 -03:00
builtin-data.c perf data: Don't mention --to-ctf if it's not supported 2022-02-22 21:23:08 -03:00
builtin-diff.c perf tools: Make quiet mode consistent between tools 2022-10-27 16:37:26 -03:00
builtin-evlist.c perf tools: Remove repipe argument from perf_session__new() 2021-08-02 10:06:51 -03:00
builtin-ftrace.c perf ftrace: Use sig_atomic_t to avoid UB 2022-11-03 09:36:09 -03:00
builtin-help.c
…
builtin-inject.c perf dso: Hold lock when accessing nsinfo 2022-10-04 08:55:20 -03:00
builtin-kallsyms.c
…
builtin-kmem.c perf tools: Enhance the matching of sub-commands abbreviations 2022-03-26 10:55:57 -03:00
builtin-kvm.c perf kvm: Fix subcommand matching error 2022-08-10 10:44:02 -03:00
builtin-kwork.c perf kwork: Remove includes not needed in kwork.h 2022-10-31 11:06:46 -03:00
builtin-list.c perf list: Add JSON output option 2022-11-23 10:29:59 -03:00
builtin-lock.c perf lock: Allow concurrent record and report 2022-11-10 15:34:19 -03:00
builtin-mem.c perf tools: Move 'struct perf_sample' to a separate header file to disentangle headers 2022-10-31 11:06:41 -03:00
builtin-probe.c perf tools: Make quiet mode consistent between tools 2022-10-27 16:37:26 -03:00
builtin-record.c perf record: Use sig_atomic_t for signal handlers 2022-11-03 09:34:40 -03:00
builtin-report.c perf tools: Make quiet mode consistent between tools 2022-10-27 16:37:26 -03:00
builtin-sched.c perf sched: Factor out destroy_tasks() 2022-10-04 08:55:21 -03:00
builtin-script.c perf stat: Allocate evsel->stats->aggr properly 2022-10-27 16:37:25 -03:00
builtin-stat.c perf thread_map: Reduce exposure of libperf internal API 2022-11-16 12:17:15 -03:00
builtin-timechart.c perf timechart: Add p_state_end helper 2022-10-04 08:55:21 -03:00
builtin-top.c perf top: Use sig_atomic_t to avoid undefined behaviour in a signal handler 2022-11-03 09:38:01 -03:00
builtin-trace.c perf thread_map: Reduce exposure of libperf internal API 2022-11-16 12:17:15 -03:00
builtin-version.c perf version: Add HAVE_DEBUGINFOD_SUPPORT to built-in features 2022-04-20 13:32:09 -03:00
builtin.h perf kwork: New tool to trace time properties of kernel work (such as softirq, and workqueue) 2022-07-26 16:01:24 -03:00
check-headers.sh tools headers: Update the copy of x86's memcpy_64.S used in 'perf bench' 2022-10-25 17:40:48 -03:00
command-list.txt perf kwork: New tool to trace time properties of kernel work (such as softirq, and workqueue) 2022-07-26 16:01:24 -03:00
design.txt perf design.txt: Synchronize the definition of enum perf_hw_id with code 2021-11-13 18:11:50 -03:00
perf-archive.sh
…
perf-completion.sh
…
perf-iostat.sh perf stat: Enable iostat mode for x86 platforms 2021-04-20 08:40:20 -03:00
perf-read-vdso.c
…
perf-sys.h
…
perf.c perf tools: Add same_cmd_with_prefix() helper 2022-10-04 08:55:21 -03:00
perf.h
…