user/sven/linux.git/tools/perf/util/session.h, branch v5.16

perf session: Introduce decompressor in reader object

2021-10-25T16:47:41Z

Introduce a decompressor data structure with pointers to decomp objects and to zstd object. We cannot just move session->zstd_data to decomp_data as session->zstd_data is not only used for decompression. Adding decompressor data object to reader object and introducing active_decomp into perf_session object to select current decompressor. Thus decompression could be executed separately for each data file. Reviewed-by: Jiri Olsa Reviewed-by: Riccardo Mancini Signed-off-by: Alexey Bayduraev Tested-by: Riccardo Mancini Acked-by: Namhyung Kim Cc: Adrian Hunter Cc: Alexander Antonov Cc: Alexander Shishkin Cc: Alexei Budankov Cc: Andi Kleen Cc: Ingo Molnar Cc: Namhyung Kim Cc: Peter Zijlstra Link: https://lore.kernel.org/r/0eee270cb52aebcbd029c8445d9009fd17709d53.1634113027.git.alexey.v.bayduraev@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Pass a fd to perf_file_header__read_pipe()

2021-08-02T13:09:05Z

Currently it unconditionally writes to stdout for repipe. But perf inject can direct its output to a regular file. Then it needs to write the header to the file as well. Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: Andi Kleen Cc: Ian Rogers Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/20210719223153.1618812-3-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Remove repipe argument from perf_session__new()

2021-08-02T13:06:51Z

The repipe argument is only used by perf inject and the all others passes 'false'. Let's remove it from the function signature and add __perf_session__new() to be called from perf inject directly. This is a preparation of the change the pipe input/output. Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: Andi Kleen Cc: Ian Rogers Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/20210719223153.1618812-2-namhyung@kernel.org [ Fixed up some trivial conflicts as this patchset fell thru the cracks ;-( ] Signed-off-by: Arnaldo Carvalho de Melo

perf report: Add --skip-empty option to suppress 0 event stat

2021-04-29T13:30:59Z

To make the output more readable, I think it's better to remove 0's in the output. Also the dummy event has no event stats so it just wasts the space. Let's use the --skip-empty option to suppress it. $ perf report --stat --skip-empty Aggregated stats: TOTAL events: 16530 MMAP events: 226 COMM events: 1596 EXIT events: 2 THROTTLE events: 121 UNTHROTTLE events: 117 FORK events: 1595 SAMPLE events: 719 MMAP2 events: 12147 CGROUP events: 2 FINISHED_ROUND events: 2 THREAD_MAP events: 1 CPU_MAP events: 1 TIME_CONV events: 1 cycles stats: SAMPLE events: 719 Reviewed-by: Andi Kleen Signed-off-by: Namhyung Kim Tested-by: Arnaldo Carvalho de Melo Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Ian Rogers Cc: Ingo Molnar Cc: Mark Rutland Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20210427013717.1651674-5-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf session: Add facility to peek at all events

2019-11-22T13:48:13Z

AUX area samples are not limited in how far back in time the sample could start. Consequently samples must be queued in advance to allow for time-ordered processing. To achieve that, add perf_session__peek_events() that walks and peeks at all the events. Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: http://lore.kernel.org/lkml/20191115124225.5247-11-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf evlist: Adopt __set_tracepoint_handlers method from perf_session

2019-10-07T15:22:17Z

It all operates on the evsels in the session's evlist, so move it to the evlist layer to make it useful to tools not using perf_session, just evlists, like 'perf trace' in live mode. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-9oc53gnfi53vg82fvolkm85g@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Move event synthesizing routines to separate header

2019-09-20T12:19:22Z

Those are the only routines using the perf_event__handler_t typedef and are all related, so move to a separate header to reduce the header dependency tree, lots of places were getting event.h and even stdio.h, limits.h indirectly, so fix those as well. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-yvx9u1mf7baq6cu1abfhbqgs@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

libperf: Rename the PERF_RECORD_ structs to have a "perf" prefix

2019-08-29T11:36:12Z

Even more, to have a "perf_record_" prefix, so that they match the PERF_RECORD_ enum they map to. Signed-off-by: Jiri Olsa Cc: Alexander Shishkin Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20190828135717.7245-23-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf evlist: Rename struct perf_evlist to struct evlist

2019-07-29T21:34:42Z

Rename struct perf_evlist to struct evlist, so we don't have a name clash when we add struct perf_evlist in libperf. Committer notes: Added fixes to build on arm64, from Jiri and from me (tools/perf/util/cs-etm.c) Signed-off-by: Jiri Olsa Cc: Alexander Shishkin Cc: Alexey Budankov Cc: Andi Kleen Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20190721112506.12306-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf evsel: Rename struct perf_evsel to struct evsel

2019-07-29T21:34:42Z

Rename struct perf_evsel to struct evsel, so we don't have a name clash when we add struct perf_evsel in libperf. Committer notes: Added fixes for arm64, provided by Jiri. Signed-off-by: Jiri Olsa Cc: Alexander Shishkin Cc: Alexey Budankov Cc: Andi Kleen Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20190721112506.12306-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo