Introduce a new option to print trace output to files named by the monitored events and update perf-script documentation accordingly.
Shown below is output of perf script command with the newly introduced option. $perf record -e cycles -e context-switches -ag -- sleep 10 $perf script --per-event-dump $ls / cycles.stacks context-switches.stacks Without per-event-dump support, drawing flamegraphs for different events is really hard. You can only monitor one event at a time for perf record. Using this option, we can get the trace output files named by the monitored events, and could draw flamegraphs according to the event's name. yuzhoujian (4): Add a new element for the struct perf_tool, and add the --per-event-dump option for perf script Add fp argument to print functions Replace printf with fprintf for all print functions Makes all print functions receive the fp argument, and opens a dump file in process_event. changes in v2: - remove the set of script.tool.per_event_dump varible. - add the __maybe_unused attribute for the fp argument in the second patch. - remove the fp_selection_helper function for setting the fp argument. - split the original second patch(Makes all those related functions receive the FILE pointer) to two patches. - modify the file name of per-event-dump to <ORIGINAL PERF DATA FILE NAME>-script-dump-<EVENT NAME>.txt tools/perf/builtin-script.c | 455 ++++++++++++++++++++++++-------------------- tools/perf/util/tool.h | 1 + 2 files changed, 253 insertions(+), 203 deletions(-) -- 1.8.3.1