perf parse-events: Make term's config const

This avoids casts in tests. Use zfree in a few places to avoid
warnings about a freeing a const pointer.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: K Prateek Nayak <kprateek.nayak@amd.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Wei Li <liwei391@huawei.com>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20230825024002.801955-4-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/tests/pmu.c b/tools/perf/tests/pmu.c
index c204ed1..eb60e5f 100644 (file)
--- a/tools/perf/tests/pmu.c
+++ b/tools/perf/tests/pmu.c
@@ -28,55 +28,55 @@ static struct test_format {
 /* Simulated users input. */
 static struct parse_events_term test_terms[] = {
        {
-               .config    = (char *) "krava01",
+               .config    = "krava01",
                .val.num   = 15,
                .type_val  = PARSE_EVENTS__TERM_TYPE_NUM,
                .type_term = PARSE_EVENTS__TERM_TYPE_USER,
        },
        {
-               .config    = (char *) "krava02",
+               .config    = "krava02",
                .val.num   = 170,
                .type_val  = PARSE_EVENTS__TERM_TYPE_NUM,
                .type_term = PARSE_EVENTS__TERM_TYPE_USER,
        },
        {
-               .config    = (char *) "krava03",
+               .config    = "krava03",
                .val.num   = 1,
                .type_val  = PARSE_EVENTS__TERM_TYPE_NUM,
                .type_term = PARSE_EVENTS__TERM_TYPE_USER,
        },
        {
-               .config    = (char *) "krava11",
+               .config    = "krava11",
                .val.num   = 27,
                .type_val  = PARSE_EVENTS__TERM_TYPE_NUM,
                .type_term = PARSE_EVENTS__TERM_TYPE_USER,
        },
        {
-               .config    = (char *) "krava12",
+               .config    = "krava12",
                .val.num   = 1,
                .type_val  = PARSE_EVENTS__TERM_TYPE_NUM,
                .type_term = PARSE_EVENTS__TERM_TYPE_USER,
        },
        {
-               .config    = (char *) "krava13",
+               .config    = "krava13",
                .val.num   = 2,
                .type_val  = PARSE_EVENTS__TERM_TYPE_NUM,
                .type_term = PARSE_EVENTS__TERM_TYPE_USER,
        },
        {
-               .config    = (char *) "krava21",
+               .config    = "krava21",
                .val.num   = 119,
                .type_val  = PARSE_EVENTS__TERM_TYPE_NUM,
                .type_term = PARSE_EVENTS__TERM_TYPE_USER,
        },
        {
-               .config    = (char *) "krava22",
+               .config    = "krava22",
                .val.num   = 11,
                .type_val  = PARSE_EVENTS__TERM_TYPE_NUM,
                .type_term = PARSE_EVENTS__TERM_TYPE_USER,
        },
        {
-               .config    = (char *) "krava23",
+               .config    = "krava23",
                .val.num   = 2,
                .type_val  = PARSE_EVENTS__TERM_TYPE_NUM,
                .type_term = PARSE_EVENTS__TERM_TYPE_USER,

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 621bdd1..4c812fb 100644 (file)
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -199,7 +199,7 @@ static void fix_raw(struct list_head *config_terms, struct perf_pmu *pmu)
                        continue;
 
                if (perf_pmu__have_event(pmu, term->val.str)) {
-                       free(term->config);
+                       zfree(&term->config);
                        term->config = term->val.str;
                        term->type_val = PARSE_EVENTS__TERM_TYPE_NUM;
                        term->type_term = PARSE_EVENTS__TERM_TYPE_USER;
@@ -208,7 +208,7 @@ static void fix_raw(struct list_head *config_terms, struct perf_pmu *pmu)
                        continue;
                }
 
-               free(term->config);
+               zfree(&term->config);
                term->config = strdup("config");
                errno = 0;
                num = strtoull(term->val.str + 1, NULL, 16);
@@ -1416,7 +1416,7 @@ int parse_events_multi_pmu_add(struct parse_events_state *parse_state,
        struct perf_pmu *pmu = NULL;
        YYLTYPE *loc = loc_;
        int ok = 0;
-       char *config;
+       const char *config;
 
        *listp = NULL;
 
@@ -1435,7 +1435,7 @@ int parse_events_multi_pmu_add(struct parse_events_state *parse_state,
                                   PARSE_EVENTS__TERM_TYPE_USER,
                                   config, 1, false, NULL,
                                        NULL) < 0) {
-               free(config);
+               zfree(&config);
                goto out_err;
        }
        list_add_tail(&term->list, head);
@@ -2378,7 +2378,7 @@ static int new_term(struct parse_events_term **_term,
 }
 
 int parse_events_term__num(struct parse_events_term **term,
-                          int type_term, char *config, u64 num,
+                          int type_term, const char *config, u64 num,
                           bool no_value,
                           void *loc_term_, void *loc_val_)
 {

diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index c4e8d8e..6d75d85 100644 (file)
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -83,7 +83,7 @@ enum {
 };
 
 struct parse_events_term {
-       char *config;
+       const char *config;
        union {
                char *str;
                u64  num;
@@ -138,7 +138,7 @@ bool parse_events__filter_pmu(const struct parse_events_state *parse_state,
 void parse_events__shrink_config_terms(void);
 int parse_events__is_hardcoded_term(struct parse_events_term *term);
 int parse_events_term__num(struct parse_events_term **term,
-                          int type_term, char *config, u64 num,
+                          int type_term, const char *config, u64 num,
                           bool novalue,
                           void *loc_term, void *loc_val);
 int parse_events_term__str(struct parse_events_term **term,

diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index a96ccc5..eb42f98 100644 (file)
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -1418,7 +1418,7 @@ static struct perf_pmu_alias *pmu_find_alias(struct perf_pmu *pmu,
                                             struct parse_events_term *term)
 {
        struct perf_pmu_alias *alias;
-       char *name;
+       const char *name;
 
        if (parse_events__is_hardcoded_term(term))
                return NULL;