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This is similar to the behavior of -b where only build_id events are inserted when a dso is accessed in a sample. File size savings can be significant in system-wide mode, consider: ``` $ perf record -g -a -o perf.data sleep 1 $ perf inject -B -i perf.data -o perf.new.data $ ls -al perf.data perf.new.data 5147049 perf.data 2248493 perf.new.data ``` Give test coverage of the new option in pipe test. Signed-off-by: Ian Rogers --- tools/perf/builtin-inject.c | 62 +++++++++++++++++++++++------ tools/perf/tests/shell/pipe_test.sh | 1 + tools/perf/util/map.c | 1 + tools/perf/util/map.h | 11 +++++ 4 files changed, 63 insertions(+), 12 deletions(-) diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c index 86425cade30e..2ff246f56a44 100644 --- a/tools/perf/builtin-inject.c +++ b/tools/perf/builtin-inject.c @@ -108,6 +108,7 @@ enum build_id_rewrite_style { BID_RWS__INJECT_HEADER_LAZY, BID_RWS__INJECT_HEADER_ALL, BID_RWS__MMAP2_BUILDID_ALL, + BID_RWS__MMAP2_BUILDID_LAZY, }; struct perf_inject { @@ -527,7 +528,8 @@ static int perf_event__repipe_common_mmap(const struct perf_tool *tool, * Remember the evsel for lazy build id generation. It is used * for the sample id header type. */ - if (inject->build_id_style == BID_RWS__INJECT_HEADER_LAZY && + if ((inject->build_id_style == BID_RWS__INJECT_HEADER_LAZY || + inject->build_id_style == BID_RWS__MMAP2_BUILDID_LAZY) && !inject->mmap_evsel) inject->mmap_evsel = evlist__event2evsel(inject->session->evlist, event); @@ -560,6 +562,9 @@ static int perf_event__repipe_common_mmap(const struct perf_tool *tool, } } dso__put(dso); + if (inject->build_id_style == BID_RWS__MMAP2_BUILDID_LAZY) + return 0; + return perf_event__repipe(tool, event, sample, machine); } @@ -825,7 +830,8 @@ static int dso__inject_mmap2_build_id(const struct perf_tool *tool, return 0; } -static int mark_dso_hit(const struct perf_tool *tool, +static int mark_dso_hit(const struct perf_inject *inject, + const struct perf_tool *tool, struct perf_sample *sample, struct machine *machine, const struct evsel *mmap_evsel, @@ -854,16 +860,39 @@ static int mark_dso_hit(const struct perf_tool *tool, } } dso = map__dso(map); - if (dso && !dso__hit(dso)) { - dso__set_hit(dso); - dso__inject_build_id(tool, sample, machine, - mmap_evsel, misc, dso__long_name(dso), dso, - map__flags(map)); + if (inject->build_id_style == BID_RWS__INJECT_HEADER_LAZY) { + if (dso && !dso__hit(dso)) { + dso__set_hit(dso); + dso__inject_build_id(tool, sample, machine, + mmap_evsel, misc, dso__long_name(dso), dso, + map__flags(map)); + } + } else if (inject->build_id_style == BID_RWS__MMAP2_BUILDID_LAZY) { + if (!map__hit(map)) { + const struct build_id null_bid = { .size = 0 }; + const struct build_id *bid = dso ? dso__bid(dso) : &null_bid; + const char *filename = dso ? dso__long_name(dso) : ""; + + map__set_hit(map); + perf_event__synthesize_mmap2_build_id(tool, sample, machine, + perf_event__repipe, + mmap_evsel, + misc, + sample->pid, sample->tid, + map__start(map), + map__end(map) - map__start(map), + map__pgoff(map), + bid, + map__prot(map), + map__flags(map), + filename); + } } return 0; } struct mark_dso_hit_args { + const struct perf_inject *inject; const struct perf_tool *tool; struct perf_sample *sample; struct machine *machine; @@ -875,7 +904,7 @@ static int mark_dso_hit_callback(struct callchain_cursor_node *node, void *data) struct mark_dso_hit_args *args = data; struct map *map = node->ms.map; - return mark_dso_hit(args->tool, args->sample, args->machine, + return mark_dso_hit(args->inject, args->tool, args->sample, args->machine, args->mmap_evsel, map, /*sample_in_dso=*/false); } @@ -888,6 +917,7 @@ int perf_event__inject_buildid(const struct perf_tool *tool, union perf_event *e struct thread *thread; struct perf_inject *inject = container_of(tool, struct perf_inject, tool); struct mark_dso_hit_args args = { + .inject = inject, .tool = tool, /* * Use the parsed sample data of the sample event, which will @@ -907,7 +937,7 @@ int perf_event__inject_buildid(const struct perf_tool *tool, union perf_event *e } if (thread__find_map(thread, sample->cpumode, sample->ip, &al)) { - mark_dso_hit(tool, sample, machine, args.mmap_evsel, al.map, + mark_dso_hit(inject, tool, sample, machine, args.mmap_evsel, al.map, /*sample_in_dso=*/true); } @@ -2151,7 +2181,8 @@ static int __cmd_inject(struct perf_inject *inject) output_data_offset = perf_session__data_offset(session->evlist); - if (inject->build_id_style == BID_RWS__INJECT_HEADER_LAZY) { + if (inject->build_id_style == BID_RWS__INJECT_HEADER_LAZY || + inject->build_id_style == BID_RWS__MMAP2_BUILDID_LAZY) { inject->tool.sample = perf_event__inject_buildid; } else if (inject->sched_stat) { struct evsel *evsel; @@ -2334,6 +2365,7 @@ int cmd_inject(int argc, const char **argv) const char *known_build_ids = NULL; bool build_ids; bool build_id_all; + bool mmap2_build_ids; bool mmap2_build_id_all; struct option options[] = { @@ -2341,6 +2373,8 @@ int cmd_inject(int argc, const char **argv) "Inject build-ids into the output stream"), OPT_BOOLEAN(0, "buildid-all", &build_id_all, "Inject build-ids of all DSOs into the output stream"), + OPT_BOOLEAN('B', "mmap2-buildids", &mmap2_build_ids, + "Drop unused mmap events, make others mmap2 with build IDs"), OPT_BOOLEAN(0, "mmap2-buildid-all", &mmap2_build_id_all, "Rewrite all mmap events as mmap2 events with build IDs"), OPT_STRING(0, "known-build-ids", &known_build_ids, @@ -2439,6 +2473,8 @@ int cmd_inject(int argc, const char **argv) return -1; } } + if (mmap2_build_ids) + inject.build_id_style = BID_RWS__MMAP2_BUILDID_LAZY; if (mmap2_build_id_all) inject.build_id_style = BID_RWS__MMAP2_BUILDID_ALL; if (build_ids) @@ -2458,7 +2494,8 @@ int cmd_inject(int argc, const char **argv) repipe = false; } ordered_events = inject.jit_mode || inject.sched_stat || - (inject.build_id_style == BID_RWS__INJECT_HEADER_LAZY); + inject.build_id_style == BID_RWS__INJECT_HEADER_LAZY || + inject.build_id_style == BID_RWS__MMAP2_BUILDID_LAZY; perf_tool__init(&inject.tool, ordered_events); inject.tool.sample = perf_event__repipe_sample; inject.tool.read = perf_event__repipe_sample; @@ -2530,7 +2567,8 @@ int cmd_inject(int argc, const char **argv) goto out_delete; } - if (inject.build_id_style == BID_RWS__INJECT_HEADER_LAZY) { + if (inject.build_id_style == BID_RWS__INJECT_HEADER_LAZY || + inject.build_id_style == BID_RWS__MMAP2_BUILDID_LAZY) { /* * to make sure the mmap records are ordered correctly * and so that the correct especially due to jitted code diff --git a/tools/perf/tests/shell/pipe_test.sh b/tools/perf/tests/shell/pipe_test.sh index 1cacd6f15bcb..9b1fcbfeb837 100755 --- a/tools/perf/tests/shell/pipe_test.sh +++ b/tools/perf/tests/shell/pipe_test.sh @@ -90,6 +90,7 @@ test_inject_bids() { } test_record_report +test_inject_bids -B test_inject_bids -b test_inject_bids --buildid-all test_inject_bids --mmap2-buildid-all diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index e781c8d56a9a..d729438b7d65 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -116,6 +116,7 @@ static void map__init(struct map *map, u64 start, u64 end, u64 pgoff, map__set_mapping_type(map, MAPPING_TYPE__DSO); assert(map__erange_warned(map) == false); assert(map__priv(map) == false); + assert(map__hit(map) == false); } struct map *map__new(struct machine *machine, u64 start, u64 len, diff --git a/tools/perf/util/map.h b/tools/perf/util/map.h index 6c43f31a9fe0..4262f5a143be 100644 --- a/tools/perf/util/map.h +++ b/tools/perf/util/map.h @@ -35,6 +35,7 @@ DECLARE_RC_STRUCT(map) { enum mapping_type mapping_type:8; bool erange_warned; bool priv; + bool hit; }; struct kmap; @@ -83,6 +84,11 @@ static inline bool map__priv(const struct map *map) return RC_CHK_ACCESS(map)->priv; } +static inline bool map__hit(const struct map *map) +{ + return RC_CHK_ACCESS(map)->hit; +} + static inline refcount_t *map__refcnt(struct map *map) { return &RC_CHK_ACCESS(map)->refcnt; @@ -287,6 +293,11 @@ static inline void map__set_priv(struct map *map) RC_CHK_ACCESS(map)->priv = true; } +static inline void map__set_hit(struct map *map) +{ + RC_CHK_ACCESS(map)->hit = true; +} + static inline void map__set_erange_warned(struct map *map) { RC_CHK_ACCESS(map)->erange_warned = true; -- 2.46.0.184.g6999bdac58-goog