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perf trace: Skip unnecessary synthesis for summary-only mode

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It needs to synthesize task info for the comm name.  The mmap
information is only needed for callchain symbolization which is not used
by the summary mode.  Also total or cgroup summary mode don't require
the task info.  Let's skip the processing if possible.

Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Namhyung Kim
2026-04-01 16:05:09 -07:00
parent b5708a308a
commit 4cbceeca56
1 changed files with 5 additions and 1 deletions
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6
tools/perf/builtin-trace.c
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@@ -2004,9 +2004,13 @@ static int trace__symbols_init(struct trace *trace, int argc, const char **argv,
if (err < 0)
goto out;
if (trace->summary_only && trace->summary_mode != SUMMARY__BY_THREAD)
goto out;
err = __machine__synthesize_threads(trace->host, &trace->tool, &trace->opts.target,
evlist->core.threads, trace__tool_process,
/*needs_mmap=*/callchain_param.enabled,
/*needs_mmap=*/callchain_param.enabled &&
!trace->summary_only,
/*mmap_data=*/false,
/*nr_threads_synthesize=*/1);
out: