Update the documentation of --build-id and --buildid-all options to
clarify the difference between them. The former requires full sample
processing to find which DSOs are actually used. While the latter simply
injects every DSO's build-id from MMAP{,2} records, skipping SAMPLEs.
Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20220923173142.805896-3-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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-b::
--build-ids::
- Inject build-ids into the output stream
+ Inject build-ids of DSOs hit by samples into the output stream.
+ This means it needs to process all SAMPLE records to find the DSOs.
--buildid-all::
- Inject build-ids of all DSOs into the output stream
+ Inject build-ids of all DSOs into the output stream regardless of hits
+ and skip SAMPLE processing.
--known-build-ids=::
Override build-ids to inject using these comma-separated pairs of