perf pmu: Make pmu_sys_event_tables const.

Make lookup nature of data structures clearer through their type.

Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Antonov <alexander.antonov@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andrew Kilroy <andrew.kilroy@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Changbin Du <changbin.du@intel.com>
Cc: Denys Zagorui <dzagorui@cisco.com>
Cc: Fabian Hemmer <copy@copy.sh>
Cc: Felix Fietkau <nbd@nbd.name>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jacob Keller <jacob.e.keller@intel.com>
Cc: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Joakim Zhang <qiangqing.zhang@nxp.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kees Kook <keescook@chromium.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nicholas Fraser <nfraser@codeweavers.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Paul Clarke <pc@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Riccardo Mancini <rickyman7@gmail.com>
Cc: Sami Tolvanen <samitolvanen@google.com>
Cc: ShihCheng Tu <mrtoastcheng@gmail.com>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Wan Jiabing <wanjiabing@vivo.com>
Cc: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20211015172132.1162559-4-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
index bff8f92733fe482c33bca26c9fffa27a96ca2379..cff06604f1692d52ddc67084e4fb54534276fd58 100644 (file)
--- a/tools/perf/pmu-events/jevents.c
+++ b/tools/perf/pmu-events/jevents.c
@@ -832,7 +832,7 @@ static void print_mapping_test_table(FILE *outfp)
 
 static void print_system_event_mapping_table_prefix(FILE *outfp)
 {
-       fprintf(outfp, "\nstruct pmu_sys_events pmu_sys_event_tables[] = {");
+       fprintf(outfp, "\nconst struct pmu_sys_events pmu_sys_event_tables[] = {");
 }
 
 static void print_system_event_mapping_table_suffix(FILE *outfp)

diff --git a/tools/perf/pmu-events/pmu-events.h b/tools/perf/pmu-events/pmu-events.h
index 42c6db6bedec373457c52ad16aa847617e43ab2f..f6c9c9fc4ab27d0a2d25f50b909ddcdb57f6880e 100644 (file)
--- a/tools/perf/pmu-events/pmu-events.h
+++ b/tools/perf/pmu-events/pmu-events.h
@@ -54,6 +54,6 @@ struct pmu_sys_events {
  * table of PMU events.
  */
 extern const struct pmu_events_map pmu_events_map[];
-extern struct pmu_sys_events pmu_sys_event_tables[];
+extern const struct pmu_sys_events pmu_sys_event_tables[];
 
 #endif

diff --git a/tools/perf/tests/pmu-events.c b/tools/perf/tests/pmu-events.c
index 8a1fdcd072f52b3936bb376dc635339fa69b0372..c0f8b61871c889c90c7f2b98ded5145445ee4d38 100644 (file)
--- a/tools/perf/tests/pmu-events.c
+++ b/tools/perf/tests/pmu-events.c
@@ -258,7 +258,7 @@ static const struct pmu_events_map *__test_pmu_get_events_map(void)
 
 static struct pmu_event *__test_pmu_get_sys_events_table(void)
 {
-       struct pmu_sys_events *tables = &pmu_sys_event_tables[0];
+       const struct pmu_sys_events *tables = &pmu_sys_event_tables[0];
 
        for ( ; tables->name; tables++) {
                if (!strcmp("pme_test_soc_sys", tables->name))

diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 4bcdc595ce5e9138ea68bfaffcc46576230bd559..c04a89cc7cef94e18979855e4b0fd603851127cb 100644 (file)
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -873,7 +873,7 @@ void pmu_for_each_sys_event(pmu_sys_event_iter_fn fn, void *data)
        int i = 0;
 
        while (1) {
-               struct pmu_sys_events *event_table;
+               const struct pmu_sys_events *event_table;
                int j = 0;
 
                event_table = &pmu_sys_event_tables[i++];