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]>

6 files changed, 13 insertions, 13 deletions

diff --git a/tools/perf/tests/cpumap.c b/tools/perf/tests/cpumap.c
index bd8e396f3e57..2f0168b2a5a9 100644
--- a/tools/perf/tests/cpumap.c
+++ b/tools/perf/tests/cpumap.c
@@ -11,7 +11,7 @@
 
 struct machine;
 
-static int process_event_mask(struct perf_tool *tool __maybe_unused,
+static int process_event_mask(const struct perf_tool *tool __maybe_unused,
 			 union perf_event *event,
 			 struct perf_sample *sample __maybe_unused,
 			 struct machine *machine __maybe_unused)
@@ -47,7 +47,7 @@ static int process_event_mask(struct perf_tool *tool __maybe_unused,
 	return 0;
 }
 
-static int process_event_cpus(struct perf_tool *tool __maybe_unused,
+static int process_event_cpus(const struct perf_tool *tool __maybe_unused,
 			 union perf_event *event,
 			 struct perf_sample *sample __maybe_unused,
 			 struct machine *machine __maybe_unused)
@@ -73,7 +73,7 @@ static int process_event_cpus(struct perf_tool *tool __maybe_unused,
 	return 0;
 }
 
-static int process_event_range_cpus(struct perf_tool *tool __maybe_unused,
+static int process_event_range_cpus(const struct perf_tool *tool __maybe_unused,
 				union perf_event *event,
 				struct perf_sample *sample __maybe_unused,
 				struct machine *machine __maybe_unused)
diff --git a/tools/perf/tests/dlfilter-test.c b/tools/perf/tests/dlfilter-test.c
index da3a9b50b1b1..54f59d1246bc 100644
--- a/tools/perf/tests/dlfilter-test.c
+++ b/tools/perf/tests/dlfilter-test.c
@@ -62,7 +62,7 @@ static int test_result(const char *msg, int ret)
 	return ret;
 }
 
-static int process(struct perf_tool *tool, union perf_event *event,
+static int process(const struct perf_tool *tool, union perf_event *event,
 		   struct perf_sample *sample __maybe_unused,
 		   struct machine *machine __maybe_unused)
 {
diff --git a/tools/perf/tests/dwarf-unwind.c b/tools/perf/tests/dwarf-unwind.c
index d01aa931fe81..f85d391ced98 100644
--- a/tools/perf/tests/dwarf-unwind.c
+++ b/tools/perf/tests/dwarf-unwind.c
@@ -37,7 +37,7 @@
 #define NO_TAIL_CALL_BARRIER __asm__ __volatile__("" : : : "memory");
 #endif
 
-static int mmap_handler(struct perf_tool *tool __maybe_unused,
+static int mmap_handler(const struct perf_tool *tool __maybe_unused,
 			union perf_event *event,
 			struct perf_sample *sample,
 			struct machine *machine)
diff --git a/tools/perf/tests/event_update.c b/tools/perf/tests/event_update.c
index d093a9b878d1..fdecad920f59 100644
--- a/tools/perf/tests/event_update.c
+++ b/tools/perf/tests/event_update.c
@@ -12,7 +12,7 @@
 #include "tests.h"
 #include "debug.h"
 
-static int process_event_unit(struct perf_tool *tool __maybe_unused,
+static int process_event_unit(const struct perf_tool *tool __maybe_unused,
 			      union perf_event *event,
 			      struct perf_sample *sample __maybe_unused,
 			      struct machine *machine __maybe_unused)
@@ -25,7 +25,7 @@ static int process_event_unit(struct perf_tool *tool __maybe_unused,
 	return 0;
 }
 
-static int process_event_scale(struct perf_tool *tool __maybe_unused,
+static int process_event_scale(const struct perf_tool *tool __maybe_unused,
 			       union perf_event *event,
 			       struct perf_sample *sample __maybe_unused,
 			       struct machine *machine __maybe_unused)
@@ -43,7 +43,7 @@ struct event_name {
 	const char *name;
 };
 
-static int process_event_name(struct perf_tool *tool,
+static int process_event_name(const struct perf_tool *tool,
 			      union perf_event *event,
 			      struct perf_sample *sample __maybe_unused,
 			      struct machine *machine __maybe_unused)
@@ -57,7 +57,7 @@ static int process_event_name(struct perf_tool *tool,
 	return 0;
 }
 
-static int process_event_cpus(struct perf_tool *tool __maybe_unused,
+static int process_event_cpus(const struct perf_tool *tool __maybe_unused,
 			      union perf_event *event,
 			      struct perf_sample *sample __maybe_unused,
 			      struct machine *machine __maybe_unused)
diff --git a/tools/perf/tests/stat.c b/tools/perf/tests/stat.c
index 706780fb5695..6468cc0d0204 100644
--- a/tools/perf/tests/stat.c
+++ b/tools/perf/tests/stat.c
@@ -21,7 +21,7 @@ static bool has_term(struct perf_record_stat_config *config,
 	return false;
 }
 
-static int process_stat_config_event(struct perf_tool *tool __maybe_unused,
+static int process_stat_config_event(const struct perf_tool *tool __maybe_unused,
 				     union perf_event *event,
 				     struct perf_sample *sample __maybe_unused,
 				     struct machine *machine __maybe_unused)
@@ -62,7 +62,7 @@ static int test__synthesize_stat_config(struct test_suite *test __maybe_unused,
 	return 0;
 }
 
-static int process_stat_event(struct perf_tool *tool __maybe_unused,
+static int process_stat_event(const struct perf_tool *tool __maybe_unused,
 			      union perf_event *event,
 			      struct perf_sample *sample __maybe_unused,
 			      struct machine *machine __maybe_unused)
@@ -93,7 +93,7 @@ static int test__synthesize_stat(struct test_suite *test __maybe_unused, int sub
 	return 0;
 }
 
-static int process_stat_round_event(struct perf_tool *tool __maybe_unused,
+static int process_stat_round_event(const struct perf_tool *tool __maybe_unused,
 				    union perf_event *event,
 				    struct perf_sample *sample __maybe_unused,
 				    struct machine *machine __maybe_unused)
diff --git a/tools/perf/tests/thread-map.c b/tools/perf/tests/thread-map.c
index 74308c1368fe..1fe521466bf4 100644
--- a/tools/perf/tests/thread-map.c
+++ b/tools/perf/tests/thread-map.c
@@ -60,7 +60,7 @@ static int test__thread_map(struct test_suite *test __maybe_unused, int subtest
 	return 0;
 }
 
-static int process_event(struct perf_tool *tool __maybe_unused,
+static int process_event(const struct perf_tool *tool __maybe_unused,
 			 union perf_event *event,
 			 struct perf_sample *sample __maybe_unused,
 			 struct machine *machine __maybe_unused)