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Message-Id: <20211007165647.3514803-5-irogers@google.com>
Date: Thu, 7 Oct 2021 09:56:30 -0700
From: Ian Rogers <irogers@...gle.com>
To: Andi Kleen <ak@...ux.intel.com>, Jiri Olsa <jolsa@...hat.com>,
Jin Yao <yao.jin@...ux.intel.com>,
Namhyung Kim <namhyung@...nel.org>,
John Garry <john.garry@...wei.com>,
Kajol Jain <kjain@...ux.ibm.com>,
"Paul A . Clarke" <pc@...ibm.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Riccardo Mancini <rickyman7@...il.com>,
Kan Liang <kan.liang@...ux.intel.com>,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Kees Cook <keescook@...omium.org>,
Sami Tolvanen <samitolvanen@...gle.com>,
Nick Desaulniers <ndesaulniers@...gle.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Jacob Keller <jacob.e.keller@...el.com>,
Zhen Lei <thunder.leizhen@...wei.com>,
ToastC <mrtoastcheng@...il.com>,
Joakim Zhang <qiangqing.zhang@....com>,
Felix Fietkau <nbd@....name>,
Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>,
Song Liu <songliubraving@...com>, Fabian Hemmer <copy@...y.sh>,
Alexander Antonov <alexander.antonov@...ux.intel.com>,
Nicholas Fraser <nfraser@...eweavers.com>,
Adrian Hunter <adrian.hunter@...el.com>,
Denys Zagorui <dzagorui@...co.com>,
Wan Jiabing <wanjiabing@...o.com>,
Thomas Richter <tmricht@...ux.ibm.com>,
Sumanth Korikkar <sumanthk@...ux.ibm.com>,
Heiko Carstens <hca@...ux.ibm.com>,
Changbin Du <changbin.du@...el.com>,
linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org
Cc: Stephane Eranian <eranian@...gle.com>,
Ian Rogers <irogers@...gle.com>
Subject: [PATCH 04/21] perf pmu: Make pmu_event tables const.
Make lookup nature of data structures clearer through their type.
Signed-off-by: Ian Rogers <irogers@...gle.com>
---
tools/perf/arch/powerpc/util/header.c | 2 +-
tools/perf/pmu-events/jevents.c | 2 +-
tools/perf/pmu-events/pmu-events.h | 4 +--
tools/perf/tests/pmu-events.c | 16 ++++++------
tools/perf/util/metricgroup.c | 36 +++++++++++++--------------
tools/perf/util/metricgroup.h | 6 ++---
tools/perf/util/pmu.c | 8 +++---
tools/perf/util/pmu.h | 2 +-
tools/perf/util/s390-sample-raw.c | 2 +-
9 files changed, 39 insertions(+), 39 deletions(-)
diff --git a/tools/perf/arch/powerpc/util/header.c b/tools/perf/arch/powerpc/util/header.c
index 58b2d610aadb..e8fe36b10d20 100644
--- a/tools/perf/arch/powerpc/util/header.c
+++ b/tools/perf/arch/powerpc/util/header.c
@@ -40,7 +40,7 @@ get_cpuid_str(struct perf_pmu *pmu __maybe_unused)
return bufp;
}
-int arch_get_runtimeparam(struct pmu_event *pe)
+int arch_get_runtimeparam(const struct pmu_event *pe)
{
int count;
char path[PATH_MAX] = "/devices/hv_24x7/interface/";
diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
index a31de0f77097..b3431c11c9cb 100644
--- a/tools/perf/pmu-events/jevents.c
+++ b/tools/perf/pmu-events/jevents.c
@@ -362,7 +362,7 @@ static int close_table;
static void print_events_table_prefix(FILE *fp, const char *tblname)
{
- fprintf(fp, "struct pmu_event %s[] = {\n", tblname);
+ fprintf(fp, "const struct pmu_event %s[] = {\n", tblname);
close_table = 1;
}
diff --git a/tools/perf/pmu-events/pmu-events.h b/tools/perf/pmu-events/pmu-events.h
index f6c9c9fc4ab2..6efe73976440 100644
--- a/tools/perf/pmu-events/pmu-events.h
+++ b/tools/perf/pmu-events/pmu-events.h
@@ -41,12 +41,12 @@ struct pmu_events_map {
const char *cpuid;
const char *version;
const char *type; /* core, uncore etc */
- struct pmu_event *table;
+ const struct pmu_event *table;
};
struct pmu_sys_events {
const char *name;
- struct pmu_event *table;
+ const struct pmu_event *table;
};
/*
diff --git a/tools/perf/tests/pmu-events.c b/tools/perf/tests/pmu-events.c
index c0f8b61871c8..cc5cea141beb 100644
--- a/tools/perf/tests/pmu-events.c
+++ b/tools/perf/tests/pmu-events.c
@@ -256,7 +256,7 @@ static const struct pmu_events_map *__test_pmu_get_events_map(void)
return NULL;
}
-static struct pmu_event *__test_pmu_get_sys_events_table(void)
+static const struct pmu_event *__test_pmu_get_sys_events_table(void)
{
const struct pmu_sys_events *tables = &pmu_sys_event_tables[0];
@@ -268,7 +268,7 @@ static struct pmu_event *__test_pmu_get_sys_events_table(void)
return NULL;
}
-static int compare_pmu_events(struct pmu_event *e1, const struct pmu_event *e2)
+static int compare_pmu_events(const struct pmu_event *e1, const struct pmu_event *e2)
{
if (!is_same(e1->name, e2->name)) {
pr_debug2("testing event e1 %s: mismatched name string, %s vs %s\n",
@@ -420,9 +420,9 @@ static int compare_alias_to_test_event(struct perf_pmu_alias *alias,
/* Verify generated events from pmu-events.c are as expected */
static int test_pmu_event_table(void)
{
- struct pmu_event *sys_event_tables = __test_pmu_get_sys_events_table();
+ const struct pmu_event *sys_event_tables = __test_pmu_get_sys_events_table();
const struct pmu_events_map *map = __test_pmu_get_events_map();
- struct pmu_event *table;
+ const struct pmu_event *table;
int map_events = 0, expected_events;
/* ignore 3x sentinels */
@@ -774,7 +774,7 @@ static int check_parse_id(const char *id, struct parse_events_error *error,
return ret;
}
-static int check_parse_cpu(const char *id, bool same_cpu, struct pmu_event *pe)
+static int check_parse_cpu(const char *id, bool same_cpu, const struct pmu_event *pe)
{
struct parse_events_error error = { .idx = 0, };
@@ -838,7 +838,7 @@ static int resolve_metric_simple(struct expr_parse_ctx *pctx,
all = true;
hashmap__for_each_entry_safe(pctx->ids, cur, cur_tmp, bkt) {
struct metric_ref *ref;
- struct pmu_event *pe;
+ const struct pmu_event *pe;
pe = metricgroup__find_metric(cur->key, map);
if (!pe)
@@ -887,7 +887,7 @@ static int test_parsing(void)
{
const struct pmu_events_map *cpus_map = pmu_events_map__find();
const struct pmu_events_map *map;
- struct pmu_event *pe;
+ const struct pmu_event *pe;
int i, j, k;
int ret = 0;
struct expr_parse_ctx *ctx;
@@ -1028,7 +1028,7 @@ static int metric_parse_fake(const char *str)
static int test_parsing_fake(void)
{
const struct pmu_events_map *map;
- struct pmu_event *pe;
+ const struct pmu_event *pe;
unsigned int i, j;
int err = 0;
diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
index 74ea0a3540ce..b60ccbbf0829 100644
--- a/tools/perf/util/metricgroup.c
+++ b/tools/perf/util/metricgroup.c
@@ -427,7 +427,7 @@ static bool match_metric(const char *n, const char *list)
return false;
}
-static bool match_pe_metric(struct pmu_event *pe, const char *metric)
+static bool match_pe_metric(const struct pmu_event *pe, const char *metric)
{
return match_metric(pe->metric_group, metric) ||
match_metric(pe->metric_name, metric);
@@ -511,7 +511,7 @@ static void metricgroup__print_strlist(struct strlist *metrics, bool raw)
putchar('\n');
}
-static int metricgroup__print_pmu_event(struct pmu_event *pe,
+static int metricgroup__print_pmu_event(const struct pmu_event *pe,
bool metricgroups, char *filter,
bool raw, bool details,
struct rblist *groups,
@@ -586,14 +586,14 @@ struct metricgroup_print_sys_idata {
bool details;
};
-typedef int (*metricgroup_sys_event_iter_fn)(struct pmu_event *pe, void *);
+typedef int (*metricgroup_sys_event_iter_fn)(const struct pmu_event *pe, void *);
struct metricgroup_iter_data {
metricgroup_sys_event_iter_fn fn;
void *data;
};
-static int metricgroup__sys_event_iter(struct pmu_event *pe, void *data)
+static int metricgroup__sys_event_iter(const struct pmu_event *pe, void *data)
{
struct metricgroup_iter_data *d = data;
struct perf_pmu *pmu = NULL;
@@ -612,7 +612,7 @@ static int metricgroup__sys_event_iter(struct pmu_event *pe, void *data)
return 0;
}
-static int metricgroup__print_sys_event_iter(struct pmu_event *pe, void *data)
+static int metricgroup__print_sys_event_iter(const struct pmu_event *pe, void *data)
{
struct metricgroup_print_sys_idata *d = data;
@@ -624,7 +624,7 @@ void metricgroup__print(bool metrics, bool metricgroups, char *filter,
bool raw, bool details)
{
const struct pmu_events_map *map = pmu_events_map__find();
- struct pmu_event *pe;
+ const struct pmu_event *pe;
int i;
struct rblist groups;
struct rb_node *node, *next;
@@ -756,7 +756,7 @@ static void metricgroup___watchdog_constraint_hint(const char *name, bool foot)
" echo 1 > /proc/sys/kernel/nmi_watchdog\n");
}
-static bool metricgroup__has_constraint(struct pmu_event *pe)
+static bool metricgroup__has_constraint(const struct pmu_event *pe)
{
if (!pe->metric_constraint)
return false;
@@ -770,7 +770,7 @@ static bool metricgroup__has_constraint(struct pmu_event *pe)
return false;
}
-int __weak arch_get_runtimeparam(struct pmu_event *pe __maybe_unused)
+int __weak arch_get_runtimeparam(const struct pmu_event *pe __maybe_unused)
{
return 1;
}
@@ -785,7 +785,7 @@ struct metricgroup_add_iter_data {
};
static int __add_metric(struct list_head *metric_list,
- struct pmu_event *pe,
+ const struct pmu_event *pe,
bool metric_no_group,
int runtime,
struct metric **mp,
@@ -909,10 +909,10 @@ static int __add_metric(struct list_head *metric_list,
(match_metric(__pe->metric_group, __metric) || \
match_metric(__pe->metric_name, __metric)))
-struct pmu_event *metricgroup__find_metric(const char *metric,
- const struct pmu_events_map *map)
+const struct pmu_event *metricgroup__find_metric(const char *metric,
+ const struct pmu_events_map *map)
{
- struct pmu_event *pe;
+ const struct pmu_event *pe;
int i;
map_for_each_event(pe, i, map) {
@@ -968,7 +968,7 @@ static int recursion_check(struct metric *m, const char *id, struct expr_id **pa
}
static int add_metric(struct list_head *metric_list,
- struct pmu_event *pe,
+ const struct pmu_event *pe,
bool metric_no_group,
struct metric **mp,
struct expr_id *parent,
@@ -993,7 +993,7 @@ static int __resolve_metric(struct metric *m,
all = true;
hashmap__for_each_entry(m->pctx->ids, cur, bkt) {
struct expr_id *parent;
- struct pmu_event *pe;
+ const struct pmu_event *pe;
pe = metricgroup__find_metric(cur->key, map);
if (!pe)
@@ -1040,7 +1040,7 @@ static int resolve_metric(bool metric_no_group,
}
static int add_metric(struct list_head *metric_list,
- struct pmu_event *pe,
+ const struct pmu_event *pe,
bool metric_no_group,
struct metric **m,
struct expr_id *parent,
@@ -1070,7 +1070,7 @@ static int add_metric(struct list_head *metric_list,
return ret;
}
-static int metricgroup__add_metric_sys_event_iter(struct pmu_event *pe,
+static int metricgroup__add_metric_sys_event_iter(const struct pmu_event *pe,
void *data)
{
struct metricgroup_add_iter_data *d = data;
@@ -1102,7 +1102,7 @@ static int metricgroup__add_metric(const char *metric, bool metric_no_group,
const struct pmu_events_map *map)
{
struct expr_ids ids = { .cnt = 0, };
- struct pmu_event *pe;
+ const struct pmu_event *pe;
struct metric *m;
LIST_HEAD(list);
int i, ret;
@@ -1286,7 +1286,7 @@ int metricgroup__parse_groups_test(struct evlist *evlist,
bool metricgroup__has_metric(const char *metric)
{
const struct pmu_events_map *map = pmu_events_map__find();
- struct pmu_event *pe;
+ const struct pmu_event *pe;
int i;
if (!map)
diff --git a/tools/perf/util/metricgroup.h b/tools/perf/util/metricgroup.h
index c931596557bf..88ba939a3082 100644
--- a/tools/perf/util/metricgroup.h
+++ b/tools/perf/util/metricgroup.h
@@ -43,8 +43,8 @@ int metricgroup__parse_groups(const struct option *opt,
bool metric_no_group,
bool metric_no_merge,
struct rblist *metric_events);
-struct pmu_event *metricgroup__find_metric(const char *metric,
- const struct pmu_events_map *map);
+const struct pmu_event *metricgroup__find_metric(const char *metric,
+ const struct pmu_events_map *map);
int metricgroup__parse_groups_test(struct evlist *evlist,
const struct pmu_events_map *map,
const char *str,
@@ -55,7 +55,7 @@ int metricgroup__parse_groups_test(struct evlist *evlist,
void metricgroup__print(bool metrics, bool groups, char *filter,
bool raw, bool details);
bool metricgroup__has_metric(const char *metric);
-int arch_get_runtimeparam(struct pmu_event *pe __maybe_unused);
+int arch_get_runtimeparam(const struct pmu_event *pe __maybe_unused);
void metricgroup__rblist_exit(struct rblist *metric_events);
int metricgroup__copy_metric_events(struct evlist *evlist, struct cgroup *cgrp,
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index c04a89cc7cef..cdd6c3f6caf1 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -315,7 +315,7 @@ static bool perf_pmu_merge_alias(struct perf_pmu_alias *newalias,
}
static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
- char *desc, char *val, struct pmu_event *pe)
+ char *desc, char *val, const struct pmu_event *pe)
{
struct parse_events_term *term;
struct perf_pmu_alias *alias;
@@ -834,7 +834,7 @@ void pmu_add_cpu_aliases_map(struct list_head *head, struct perf_pmu *pmu,
i = 0;
while (1) {
const char *cpu_name = is_arm_pmu_core(name) ? name : "cpu";
- struct pmu_event *pe = &map->table[i++];
+ const struct pmu_event *pe = &map->table[i++];
const char *pname = pe->pmu ? pe->pmu : cpu_name;
if (!pe->name) {
@@ -882,7 +882,7 @@ void pmu_for_each_sys_event(pmu_sys_event_iter_fn fn, void *data)
break;
while (1) {
- struct pmu_event *pe = &event_table->table[j++];
+ const struct pmu_event *pe = &event_table->table[j++];
int ret;
if (!pe->name && !pe->metric_group && !pe->metric_name)
@@ -900,7 +900,7 @@ struct pmu_sys_event_iter_data {
struct perf_pmu *pmu;
};
-static int pmu_add_sys_aliases_iter_fn(struct pmu_event *pe, void *data)
+static int pmu_add_sys_aliases_iter_fn(const struct pmu_event *pe, void *data)
{
struct pmu_sys_event_iter_data *idata = data;
struct perf_pmu *pmu = idata->pmu;
diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h
index dd5cdde6a3d0..cc9f9e001347 100644
--- a/tools/perf/util/pmu.h
+++ b/tools/perf/util/pmu.h
@@ -127,7 +127,7 @@ const struct pmu_events_map *pmu_events_map__find(void);
bool pmu_uncore_alias_match(const char *pmu_name, const char *name);
void perf_pmu_free_alias(struct perf_pmu_alias *alias);
-typedef int (*pmu_sys_event_iter_fn)(struct pmu_event *pe, void *data);
+typedef int (*pmu_sys_event_iter_fn)(const struct pmu_event *pe, void *data);
void pmu_for_each_sys_event(pmu_sys_event_iter_fn fn, void *data);
int perf_pmu__convert_scale(const char *scale, char **end, double *sval);
diff --git a/tools/perf/util/s390-sample-raw.c b/tools/perf/util/s390-sample-raw.c
index 13f33d1ddb78..cd3a34840389 100644
--- a/tools/perf/util/s390-sample-raw.c
+++ b/tools/perf/util/s390-sample-raw.c
@@ -140,7 +140,7 @@ static const char *get_counter_name(int set, int nr, const struct pmu_events_map
int rc, event_nr, wanted = get_counterset_start(set) + nr;
if (map) {
- struct pmu_event *evp = map->table;
+ const struct pmu_event *evp = map->table;
for (; evp->name || evp->event || evp->desc; ++evp) {
if (evp->name == NULL || evp->event == NULL)
--
2.33.0.882.g93a45727a2-goog
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