Messages in this thread Patch in this message | | | From | kan.liang@linux ... | Subject | [PATCH 09/12] perf tools: Add support for PERF_SAMPLE_CODE_PAGE_SIZE | Date | Tue, 17 Nov 2020 11:56:34 -0800 |
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From: Stephane Eranian <eranian@google.com>
Adds the infrastructure to sample the code address page size.
Introduce a new --code-page-size option for perf record.
Signed-off-by: Stephane Eranian <eranian@google.com> --- tools/perf/Documentation/perf-record.txt | 3 +++ tools/perf/builtin-record.c | 2 ++ tools/perf/util/event.h | 1 + tools/perf/util/evsel.c | 9 +++++++++ tools/perf/util/perf_event_attr_fprintf.c | 2 +- tools/perf/util/record.h | 1 + tools/perf/util/synthetic-events.c | 8 ++++++++ 7 files changed, 25 insertions(+), 1 deletion(-)
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index e6605b2ecd55..4d1531289124 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -296,6 +296,9 @@ OPTIONS --data-page-size:: Record the sampled data address data page size +--code-page-size:: + Record the sampled code address (ip) page size + -T:: --timestamp:: Record the sample timestamps. Use it with 'perf report -D' to see the diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 29901f6a51bb..50c2593623e3 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -2478,6 +2478,8 @@ static struct option __record_options[] = { "Record the sample physical addresses"), OPT_BOOLEAN(0, "data-page-size", &record.opts.sample_data_page_size, "Record the sampled data address data page size"), + OPT_BOOLEAN(0, "code-page-size", &record.opts.sample_code_page_size, + "Record the sampled code address (ip) page size"), OPT_BOOLEAN(0, "sample-cpu", &record.opts.sample_cpu, "Record the sample cpu"), OPT_BOOLEAN_SET('T', "timestamp", &record.opts.sample_time, &record.opts.sample_time_set, diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h index 2e5aec3ead9f..01bd26c78e69 100644 --- a/tools/perf/util/event.h +++ b/tools/perf/util/event.h @@ -136,6 +136,7 @@ struct perf_sample { u64 data_src; u64 phys_addr; u64 data_page_size; + u64 code_page_size; u64 cgroup; u32 flags; u16 insn_len; diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 3190cb165183..806b39b7988d 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -1193,6 +1193,9 @@ void evsel__config(struct evsel *evsel, struct record_opts *opts, if (opts->sample_data_page_size) evsel__set_sample_bit(evsel, DATA_PAGE_SIZE); + if (opts->sample_code_page_size) + evsel__set_sample_bit(evsel, CODE_PAGE_SIZE); + if (opts->record_switch_events) attr->context_switch = track; @@ -2374,6 +2377,12 @@ int evsel__parse_sample(struct evsel *evsel, union perf_event *event, array++; } + data->code_page_size = 0; + if (type & PERF_SAMPLE_CODE_PAGE_SIZE) { + data->code_page_size = *array; + array++; + } + if (type & PERF_SAMPLE_AUX) { OVERFLOW_CHECK_u64(array); sz = *array++; diff --git a/tools/perf/util/perf_event_attr_fprintf.c b/tools/perf/util/perf_event_attr_fprintf.c index fb0bb6684438..3a2eb25d07a7 100644 --- a/tools/perf/util/perf_event_attr_fprintf.c +++ b/tools/perf/util/perf_event_attr_fprintf.c @@ -35,7 +35,7 @@ static void __p_sample_type(char *buf, size_t size, u64 value) bit_name(BRANCH_STACK), bit_name(REGS_USER), bit_name(STACK_USER), bit_name(IDENTIFIER), bit_name(REGS_INTR), bit_name(DATA_SRC), bit_name(WEIGHT), bit_name(PHYS_ADDR), bit_name(AUX), - bit_name(CGROUP), bit_name(DATA_PAGE_SIZE), + bit_name(CGROUP), bit_name(DATA_PAGE_SIZE), bit_name(CODE_PAGE_SIZE), { .name = NULL, } }; #undef bit_name diff --git a/tools/perf/util/record.h b/tools/perf/util/record.h index 694b351dcd27..22dc86b1dab5 100644 --- a/tools/perf/util/record.h +++ b/tools/perf/util/record.h @@ -23,6 +23,7 @@ struct record_opts { bool sample_address; bool sample_phys_addr; bool sample_data_page_size; + bool sample_code_page_size; bool sample_weight; bool sample_time; bool sample_time_set; diff --git a/tools/perf/util/synthetic-events.c b/tools/perf/util/synthetic-events.c index 0884a19f313b..81bc174f83f3 100644 --- a/tools/perf/util/synthetic-events.c +++ b/tools/perf/util/synthetic-events.c @@ -1409,6 +1409,9 @@ size_t perf_event__sample_event_size(const struct perf_sample *sample, u64 type, if (type & PERF_SAMPLE_DATA_PAGE_SIZE) result += sizeof(u64); + if (type & PERF_SAMPLE_CODE_PAGE_SIZE) + result += sizeof(u64); + if (type & PERF_SAMPLE_AUX) { result += sizeof(u64); result += sample->aux_sample.size; @@ -1593,6 +1596,11 @@ int perf_event__synthesize_sample(union perf_event *event, u64 type, u64 read_fo array++; } + if (type & PERF_SAMPLE_CODE_PAGE_SIZE) { + *array = sample->code_page_size; + array++; + } + if (type & PERF_SAMPLE_AUX) { sz = sample->aux_sample.size; *array++ = sz; -- 2.17.1
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