From 374fb9e362f64e730388abc1de9bb93829670a54 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Sun, 25 Oct 2015 15:51:27 +0100 Subject: [PATCH] perf tools: Add stat config user level event Adding the stat config event to pass/store stat config data, so report tools (report/script) know how to interpret stat data. The config data is stored in a 'tag|value' way to allow for easy extension and backwards compatibility. Signed-off-by: Jiri Olsa Tested-by: Kan Liang Cc: David Ahern Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1445784728-21732-12-git-send-email-jolsa@kernel.org [ stat_config_term_event -> stat_config_event_entry ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/event.c | 1 + tools/perf/util/event.h | 20 ++++++++++++++++++++ tools/perf/util/session.c | 24 ++++++++++++++++++++++++ tools/perf/util/tool.h | 3 ++- 4 files changed, 47 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index f31ab3b8f918..43e2dfc2c73b 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -39,6 +39,7 @@ static const char *perf_event__names[] = { [PERF_RECORD_AUXTRACE_ERROR] = "AUXTRACE_ERROR", [PERF_RECORD_THREAD_MAP] = "THREAD_MAP", [PERF_RECORD_CPU_MAP] = "CPU_MAP", + [PERF_RECORD_STAT_CONFIG] = "STAT_CONFIG", }; const char *perf_event__name(unsigned int id) diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h index 74a434116b2c..16cee44de56b 100644 --- a/tools/perf/util/event.h +++ b/tools/perf/util/event.h @@ -228,6 +228,7 @@ enum perf_user_event_type { /* above any possible kernel type */ PERF_RECORD_AUXTRACE_ERROR = 72, PERF_RECORD_THREAD_MAP = 73, PERF_RECORD_CPU_MAP = 74, + PERF_RECORD_STAT_CONFIG = 75, PERF_RECORD_HEADER_MAX }; @@ -395,6 +396,24 @@ struct thread_map_event { struct thread_map_event_entry entries[]; }; +enum { + PERF_STAT_CONFIG_TERM__AGGR_MODE = 0, + PERF_STAT_CONFIG_TERM__INTERVAL = 1, + PERF_STAT_CONFIG_TERM__SCALE = 2, + PERF_STAT_CONFIG_TERM__MAX = 3, +}; + +struct stat_config_event_entry { + u64 tag; + u64 val; +}; + +struct stat_config_event { + struct perf_event_header header; + u64 nr; + struct stat_config_event_entry data[]; +}; + union perf_event { struct perf_event_header header; struct mmap_event mmap; @@ -419,6 +438,7 @@ union perf_event { struct context_switch_event context_switch; struct thread_map_event thread_map; struct cpu_map_event cpu_map; + struct stat_config_event stat_config; }; void perf_event__print_totals(void); diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 4350f5e85bf5..fbc52ab3eb75 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -315,6 +315,15 @@ int process_event_cpu_map_stub(struct perf_tool *tool __maybe_unused, return 0; } +static +int process_event_stat_config_stub(struct perf_tool *tool __maybe_unused, + union perf_event *event __maybe_unused, + struct perf_session *session __maybe_unused) +{ + dump_printf(": unhandled!\n"); + return 0; +} + void perf_tool__fill_defaults(struct perf_tool *tool) { if (tool->sample == NULL) @@ -369,6 +378,8 @@ void perf_tool__fill_defaults(struct perf_tool *tool) tool->thread_map = process_event_thread_map_stub; if (tool->cpu_map == NULL) tool->cpu_map = process_event_cpu_map_stub; + if (tool->stat_config == NULL) + tool->stat_config = process_event_stat_config_stub; } static void swap_sample_id_all(union perf_event *event, void *data) @@ -686,6 +697,16 @@ static void perf_event__cpu_map_swap(union perf_event *event, } } +static void perf_event__stat_config_swap(union perf_event *event, + bool sample_id_all __maybe_unused) +{ + u64 size; + + size = event->stat_config.nr * sizeof(event->stat_config.data[0]); + size += 1; /* nr item itself */ + mem_bswap_64(&event->stat_config.nr, size); +} + typedef void (*perf_event__swap_op)(union perf_event *event, bool sample_id_all); @@ -715,6 +736,7 @@ static perf_event__swap_op perf_event__swap_ops[] = { [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap, [PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap, [PERF_RECORD_CPU_MAP] = perf_event__cpu_map_swap, + [PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap, [PERF_RECORD_HEADER_MAX] = NULL, }; @@ -1255,6 +1277,8 @@ static s64 perf_session__process_user_event(struct perf_session *session, return tool->thread_map(tool, event, session); case PERF_RECORD_CPU_MAP: return tool->cpu_map(tool, event, session); + case PERF_RECORD_STAT_CONFIG: + return tool->stat_config(tool, event, session); default: return -EINVAL; } diff --git a/tools/perf/util/tool.h b/tools/perf/util/tool.h index 9e5925c78519..aa7ae73d76b4 100644 --- a/tools/perf/util/tool.h +++ b/tools/perf/util/tool.h @@ -57,7 +57,8 @@ struct perf_tool { auxtrace_info, auxtrace_error, thread_map, - cpu_map; + cpu_map, + stat_config; event_op3 auxtrace; bool ordered_events; bool ordering_requires_timestamps;