perf tool: Constify tool pointers

The tool pointer (to a struct largely of function pointers) is passed
around but is unchanged except at initialization. Change parameter and
variable types to be const to lower the possibilities of what could
happen with a tool.

Reviewed-by: Adrian Hunter <[email protected]>
Signed-off-by: Ian Rogers <[email protected]>
Tested-by: Adrian Hunter <[email protected]>
Tested-by: Leo Yan <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Anshuman Khandual <[email protected]>
Cc: Athira Rajeev <[email protected]>
Cc: Huacai Chen <[email protected]>
Cc: Ilkka Koskinen <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: James Clark <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: John Garry <[email protected]>
Cc: Jonathan Cameron <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Leo Yan <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Mike Leach <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Nick Desaulniers <[email protected]>
Cc: Nick Terrell <[email protected]>
Cc: Oliver Upton <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Song Liu <[email protected]>
Cc: Sun Haiyong <[email protected]>
Cc: Suzuki Poulouse <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Yanteng Si <[email protected]>
Cc: Yicong Yang <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

1 files changed, 3 insertions, 3 deletions

diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c
index 1fc03bfd14c3..fd2597613f3d 100644
--- a/tools/perf/util/intel-pt.c
+++ b/tools/perf/util/intel-pt.c
@@ -3449,7 +3449,7 @@ out:
 static int intel_pt_process_event(struct perf_session *session,
 				  union perf_event *event,
 				  struct perf_sample *sample,
-				  struct perf_tool *tool)
+				  const struct perf_tool *tool)
 {
 	struct intel_pt *pt = container_of(session->auxtrace, struct intel_pt,
 					   auxtrace);
@@ -3533,7 +3533,7 @@ static int intel_pt_process_event(struct perf_session *session,
 	return err;
 }
 
-static int intel_pt_flush(struct perf_session *session, struct perf_tool *tool)
+static int intel_pt_flush(struct perf_session *session, const struct perf_tool *tool)
 {
 	struct intel_pt *pt = container_of(session->auxtrace, struct intel_pt,
 					   auxtrace);
@@ -3600,7 +3600,7 @@ static bool intel_pt_evsel_is_auxtrace(struct perf_session *session,
 
 static int intel_pt_process_auxtrace_event(struct perf_session *session,
 					   union perf_event *event,
-					   struct perf_tool *tool __maybe_unused)
+					   const struct perf_tool *tool __maybe_unused)
 {
 	struct intel_pt *pt = container_of(session->auxtrace, struct intel_pt,
 					   auxtrace);