From: Ian Rogers <irogers@google.com>
Date: Sat, 18 Oct 2025 04:59:02 +0000 (-0700)
Subject: perf trace: Don't synthesize mmaps unless callchains are enabled
X-Git-Tag: v6.19-rc1~61^2~182
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ad1a008bf0d01747a84e0090ac3aa6aa44ff8f54;p=thirdparty%2Fkernel%2Flinux.git

perf trace: Don't synthesize mmaps unless callchains are enabled

Synthesizing mmaps in perf trace is unnecessary unless call chains are
being generated.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Howard Chu <howardchu95@gmail.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index c607f39b8c8bb..a743bda294bd3 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -2005,7 +2005,9 @@ static int trace__symbols_init(struct trace *trace, int argc, const char **argv,
 
 	err = __machine__synthesize_threads(trace->host, &trace->tool, &trace->opts.target,
 					    evlist->core.threads, trace__tool_process,
-					    true, false, 1);
+					    /*needs_mmap=*/callchain_param.enabled,
+					    /*mmap_data=*/false,
+					    /*nr_threads_synthesize=*/1);
 out:
 	if (err) {
 		perf_env__exit(&trace->host_env);