perf namespaces: Fixup the nsinfo__in_pidns() return type, its bool

[ Upstream commit 64a7617 ]

When adding support for refconunt checking a cut'n'paste made this
function, that is just an accessor to a bool member of 'struct nsinfo',
return a pid_t, when that member is a boolean, fix it.

Fixes: bcaf0a9 ("perf namespaces: Add functions to access nsinfo")
Reported-by: Francesco Nigro <fnigro@redhat.com>
Reported-by: Ilan Green <igreen@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Clark Williams <williams@redhat.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yonatan Goldschmidt <yonatan.goldschmidt@granulate.io>
Link: https://lore.kernel.org/r/20241206204828.507527-6-acme@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
(cherry picked from commit e7a7412df70843354acba617ec71af0fe4998ad6)

Author: acmel

tools/perf/util/namespaces.c

@@ -266,7 +266,7 @@ pid_t nsinfo__pid(const struct nsinfo  *nsi)
 	return RC_CHK_ACCESS(nsi)->pid;
 }
 
-pid_t nsinfo__in_pidns(const struct nsinfo  *nsi)
+bool nsinfo__in_pidns(const struct nsinfo *nsi)
 {
 	return RC_CHK_ACCESS(nsi)->in_pidns;
 }

tools/perf/util/namespaces.h

@@ -58,7 +58,7 @@ void nsinfo__clear_need_setns(struct nsinfo *nsi);
 pid_t nsinfo__tgid(const struct nsinfo  *nsi);
 pid_t nsinfo__nstgid(const struct nsinfo  *nsi);
 pid_t nsinfo__pid(const struct nsinfo  *nsi);
-pid_t nsinfo__in_pidns(const struct nsinfo  *nsi);
+bool nsinfo__in_pidns(const struct nsinfo  *nsi);
 void nsinfo__set_in_pidns(struct nsinfo *nsi);
 
 void nsinfo__mountns_enter(struct nsinfo *nsi, struct nscookie *nc);