[PATCH v2 07/16] perf stat: Move stat_config into config.c

Ian Rogers
2024-10-16T04:24:52Z

stat_config is accessed by config.c via helper functions, but declared
in builtin-stat. Move to util/config.c so that stub functions aren't
needed in python.c which doesn't link against the builtin files.

To avoid name conflicts change builtin-script to use the same
stat_config as builtin-stat. Rename local variables in tests to avoid
shadow declaration warnings.

Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/perf/builtin-script.c | 1 -
tools/perf/builtin-stat.c | 27 ---------------------------
tools/perf/tests/stat.c | 16 +++++++++-------
tools/perf/util/config.c | 27 +++++++++++++++++++++++++++
tools/perf/util/path.c | 10 ++++++++++
tools/perf/util/path.h | 1 +
tools/perf/util/python.c | 9 ---------
tools/perf/util/stat.h | 3 ++-
8 files changed, 49 insertions(+), 45 deletions(-)

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 27b2fb08ad67..1ce7b71f1f46 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -85,7 +85,6 @@ static bool system_wide;
static bool print_flags;
static const char *cpu_list;
static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
-static struct perf_stat_config stat_config;
static int max_blocks;
static bool native_arch;
static struct dlfilter *dlfilter;
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index b5e18853982c..7c7424824b0e 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -112,8 +112,6 @@ static struct target target = {
.uid = UINT_MAX,
};

-#define METRIC_ONLY_LEN 20
-
static volatile sig_atomic_t child_pid = -1;
static int detailed_run = 0;
static bool transaction_run;
@@ -151,21 +149,6 @@ static struct perf_stat perf_stat;

static volatile sig_atomic_t done = 0;

-static struct perf_stat_config stat_config = {
- .aggr_mode = AGGR_GLOBAL,
- .aggr_level = MAX_CACHE_LVL + 1,
- .scale = true,
- .unit_width = 4, /* strlen("unit") */
- .run_count = 1,
- .metric_only_len = METRIC_ONLY_LEN,
- .walltime_nsecs_stats = &walltime_nsecs_stats,
- .ru_stats = &ru_stats,
- .big_num = true,
- .ctl_fd = -1,
- .ctl_fd_ack = -1,
- .iostat_run = false,
-};
-
/* Options set from the command line. */
struct opt_aggr_mode {
bool node, socket, die, cluster, cache, core, thread, no_aggr;
@@ -1059,16 +1042,6 @@ static void sig_atexit(void)
kill(getpid(), signr);
}

-void perf_stat__set_big_num(int set)
-{
- stat_config.big_num = (set != 0);
-}
-
-void perf_stat__set_no_csv_summary(int set)
-{
- stat_config.no_csv_summary = (set != 0);
-}
-
static int stat__set_big_num(const struct option *opt __maybe_unused,
const char *s __maybe_unused, int unset)
{
diff --git a/tools/perf/tests/stat.c b/tools/perf/tests/stat.c
index 6468cc0d0204..d60983657bad 100644
--- a/tools/perf/tests/stat.c
+++ b/tools/perf/tests/stat.c
@@ -27,7 +27,7 @@ static int process_stat_config_event(const struct perf_tool *tool __maybe_unused
struct machine *machine __maybe_unused)
{
struct perf_record_stat_config *config = &event->stat_config;
- struct perf_stat_config stat_config = {};
+ struct perf_stat_config test_stat_config = {};

#define HAS(term, val) \
has_term(config, PERF_STAT_CONFIG_TERM__##term, val)
@@ -39,25 +39,27 @@ static int process_stat_config_event(const struct perf_tool *tool __maybe_unused

#undef HAS

- perf_event__read_stat_config(&stat_config, config);
+ perf_event__read_stat_config(&test_stat_config, config);

- TEST_ASSERT_VAL("wrong aggr_mode", stat_config.aggr_mode == AGGR_CORE);
- TEST_ASSERT_VAL("wrong scale", stat_config.scale == 1);
- TEST_ASSERT_VAL("wrong interval", stat_config.interval == 1);
+ TEST_ASSERT_VAL("wrong aggr_mode", test_stat_config.aggr_mode == AGGR_CORE);
+ TEST_ASSERT_VAL("wrong scale", test_stat_config.scale == 1);
+ TEST_ASSERT_VAL("wrong interval", test_stat_config.interval == 1);
return 0;
}

static int test__synthesize_stat_config(struct test_suite *test __maybe_unused,
int subtest __maybe_unused)
{
- struct perf_stat_config stat_config = {
+ struct perf_stat_config test_stat_config = {
.aggr_mode = AGGR_CORE,
.scale = 1,
.interval = 1,
};

TEST_ASSERT_VAL("failed to synthesize stat_config",
- !perf_event__synthesize_stat_config(NULL, &stat_config, process_stat_config_event, NULL));
+ !perf_event__synthesize_stat_config(NULL, &test_stat_config,
+ process_stat_config_event,
+ NULL));

return 0;
}
diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 68f9407ca74b..2d07c9257a1a 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -13,6 +13,7 @@
#include <sys/param.h>
#include "cache.h"
#include "callchain.h"
+#include "header.h"
#include <subcmd/exec-cmd.h>
#include "util/event.h" /* proc_map_timeout */
#include "util/hist.h" /* perf_hist_config */
@@ -34,6 +35,22 @@

#define DEBUG_CACHE_DIR ".debug"

+#define METRIC_ONLY_LEN 20
+
+struct perf_stat_config stat_config = {
+ .aggr_mode = AGGR_GLOBAL,
+ .aggr_level = MAX_CACHE_LVL + 1,
+ .scale = true,
+ .unit_width = 4, /* strlen("unit") */
+ .run_count = 1,
+ .metric_only_len = METRIC_ONLY_LEN,
+ .walltime_nsecs_stats = &walltime_nsecs_stats,
+ .ru_stats = &ru_stats,
+ .big_num = true,
+ .ctl_fd = -1,
+ .ctl_fd_ack = -1,
+ .iostat_run = false,
+};

char buildid_dir[MAXPATHLEN]; /* root dir for buildid, binary cache */

@@ -455,6 +472,16 @@ static int perf_ui_config(const char *var, const char *value)
return 0;
}

+void perf_stat__set_big_num(int set)
+{
+ stat_config.big_num = (set != 0);
+}
+
+static void perf_stat__set_no_csv_summary(int set)
+{
+ stat_config.no_csv_summary = (set != 0);
+}
+
static int perf_stat_config(const char *var, const char *value)
{
if (!strcmp(var, "stat.big-num"))
diff --git a/tools/perf/util/path.c b/tools/perf/util/path.c
index 00adf872bf00..9712466c51e2 100644
--- a/tools/perf/util/path.c
+++ b/tools/perf/util/path.c
@@ -68,6 +68,16 @@ bool is_directory(const char *base_path, const struct dirent *dent)
return S_ISDIR(st.st_mode);
}

+bool is_directory_at(int dir_fd, const char *path)
+{
+ struct stat st;
+
+ if (fstatat(dir_fd, path, &st, /*flags=*/0))
+ return false;
+
+ return S_ISDIR(st.st_mode);
+}
+
bool is_executable_file(const char *base_path, const struct dirent *dent)
{
char path[PATH_MAX];
diff --git a/tools/perf/util/path.h b/tools/perf/util/path.h
index d94902c22222..fbafbe7015dd 100644
--- a/tools/perf/util/path.h
+++ b/tools/perf/util/path.h
@@ -12,6 +12,7 @@ int path__join3(char *bf, size_t size, const char *path1, const char *path2, con

bool is_regular_file(const char *file);
bool is_directory(const char *base_path, const struct dirent *dent);
+bool is_directory_at(int dir_fd, const char *path);
bool is_executable_file(const char *base_path, const struct dirent *dent);

#endif /* _PERF_PATH_H */
diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c
index 5f11ae88943d..0fa8e27769be 100644
--- a/tools/perf/util/python.c
+++ b/tools/perf/util/python.c
@@ -17,7 +17,6 @@
#include "trace-event.h"
#include "mmap.h"
#include "util/env.h"
-#include "util/kvm-stat.h"
#include "util/kwork.h"
#include "util/sample.h"
#include "util/lock-contention.h"
@@ -1306,14 +1305,6 @@ PyMODINIT_FUNC PyInit_perf(void)
/* The following are stubs to avoid dragging in builtin-* objects. */
/* TODO: move the code out of the builtin-* file into util. */

-void perf_stat__set_no_csv_summary(int set __maybe_unused)
-{
-}
-
-void perf_stat__set_big_num(int set __maybe_unused)
-{
-}
-
int script_spec_register(const char *spec __maybe_unused, struct scripting_ops *ops __maybe_unused)
{
return -1;
diff --git a/tools/perf/util/stat.h b/tools/perf/util/stat.h
index fd7a187551bd..78ddc14507b7 100644
--- a/tools/perf/util/stat.h
+++ b/tools/perf/util/stat.h
@@ -117,8 +117,9 @@ struct perf_stat_config {
unsigned int topdown_level;
};

+extern struct perf_stat_config stat_config;
+
void perf_stat__set_big_num(int set);
-void perf_stat__set_no_csv_summary(int set);

void update_stats(struct stats *stats, u64 val);
double avg_stats(struct stats *stats);
--
2.47.0.rc1.288.g06298d1525-goog