linux-kernel - [PATCH 1/2] perf record: Fix sample cgroup & namespace tracking

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Message-ID: <20240818212948.2873156-1-namhyung@kernel.org>
Date: Sun, 18 Aug 2024 14:29:47 -0700
From: Namhyung Kim <namhyung@...nel.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>,
	Ian Rogers <irogers@...gle.com>,
	Kan Liang <kan.liang@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-perf-users@...r.kernel.org
Subject: [PATCH 1/2] perf record: Fix sample cgroup & namespace tracking

The recent change in perf_tool constification broke the cgroup and/or
namespace tracking by resetting tool fields.  It should set the values
after perf_tool__init().

Fixes: cecb1cf154b30 ("perf record: Use perf_tool__init()")
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/builtin-record.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 39367709fd99..adbaf80b398c 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -2374,13 +2374,8 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
 	signal(SIGTERM, sig_handler);
 	signal(SIGSEGV, sigsegv_handler);
 
-	if (rec->opts.record_namespaces)
-		tool->namespace_events = true;
-
 	if (rec->opts.record_cgroup) {
-#ifdef HAVE_FILE_HANDLE
-		tool->cgroup_events = true;
-#else
+#ifndef HAVE_FILE_HANDLE
 		pr_err("cgroup tracking is not supported\n");
 		return -1;
 #endif
@@ -2406,6 +2401,8 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
 	tool->mmap2		= build_id__process_mmap2;
 	tool->itrace_start	= process_timestamp_boundary;
 	tool->aux		= process_timestamp_boundary;
+	tool->namespace_events	= rec->opts.record_namespaces;
+	tool->cgroup_events	= rec->opts.record_cgroup;
 	session = perf_session__new(data, tool);
 	if (IS_ERR(session)) {
 		pr_err("Perf session creation failed.\n");
-- 
2.46.0.184.g6999bdac58-goog