[PATCH v2 39/48] perf evsel: Rename variable cpu to index
Ian Rogers
irogers at google.com
Wed Dec 22 23:45:32 PST 2021
Make naming less error prone.
Signed-off-by: Ian Rogers <irogers at google.com>
---
tools/perf/util/evsel.c | 83 +++++++++++++++++++++--------------------
tools/perf/util/evsel.h | 6 +--
tools/perf/util/stat.c | 4 +-
tools/perf/util/stat.h | 2 +-
4 files changed, 48 insertions(+), 47 deletions(-)
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 8911ebde54d6..2b18b29a534f 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -1372,9 +1372,9 @@ int evsel__append_addr_filter(struct evsel *evsel, const char *filter)
}
/* Caller has to clear disabled after going through all CPUs. */
-int evsel__enable_cpu(struct evsel *evsel, int cpu)
+int evsel__enable_cpu(struct evsel *evsel, int cpu_map_idx)
{
- return perf_evsel__enable_cpu(&evsel->core, cpu);
+ return perf_evsel__enable_cpu(&evsel->core, cpu_map_idx);
}
int evsel__enable(struct evsel *evsel)
@@ -1387,9 +1387,9 @@ int evsel__enable(struct evsel *evsel)
}
/* Caller has to set disabled after going through all CPUs. */
-int evsel__disable_cpu(struct evsel *evsel, int cpu)
+int evsel__disable_cpu(struct evsel *evsel, int cpu_map_idx)
{
- return perf_evsel__disable_cpu(&evsel->core, cpu);
+ return perf_evsel__disable_cpu(&evsel->core, cpu_map_idx);
}
int evsel__disable(struct evsel *evsel)
@@ -1455,7 +1455,7 @@ void evsel__delete(struct evsel *evsel)
free(evsel);
}
-void evsel__compute_deltas(struct evsel *evsel, int cpu, int thread,
+void evsel__compute_deltas(struct evsel *evsel, int cpu_map_idx, int thread,
struct perf_counts_values *count)
{
struct perf_counts_values tmp;
@@ -1463,12 +1463,12 @@ void evsel__compute_deltas(struct evsel *evsel, int cpu, int thread,
if (!evsel->prev_raw_counts)
return;
- if (cpu == -1) {
+ if (cpu_map_idx == -1) {
tmp = evsel->prev_raw_counts->aggr;
evsel->prev_raw_counts->aggr = *count;
} else {
- tmp = *perf_counts(evsel->prev_raw_counts, cpu, thread);
- *perf_counts(evsel->prev_raw_counts, cpu, thread) = *count;
+ tmp = *perf_counts(evsel->prev_raw_counts, cpu_map_idx, thread);
+ *perf_counts(evsel->prev_raw_counts, cpu_map_idx, thread) = *count;
}
count->val = count->val - tmp.val;
@@ -1483,20 +1483,21 @@ static int evsel__read_one(struct evsel *evsel, int cpu_map_idx, int thread)
return perf_evsel__read(&evsel->core, cpu_map_idx, thread, count);
}
-static void evsel__set_count(struct evsel *counter, int cpu, int thread, u64 val, u64 ena, u64 run)
+static void evsel__set_count(struct evsel *counter, int cpu_map_idx, int thread,
+ u64 val, u64 ena, u64 run)
{
struct perf_counts_values *count;
- count = perf_counts(counter->counts, cpu, thread);
+ count = perf_counts(counter->counts, cpu_map_idx, thread);
count->val = val;
count->ena = ena;
count->run = run;
- perf_counts__set_loaded(counter->counts, cpu, thread, true);
+ perf_counts__set_loaded(counter->counts, cpu_map_idx, thread, true);
}
-static int evsel__process_group_data(struct evsel *leader, int cpu, int thread, u64 *data)
+static int evsel__process_group_data(struct evsel *leader, int cpu_map_idx, int thread, u64 *data)
{
u64 read_format = leader->core.attr.read_format;
struct sample_read_value *v;
@@ -1515,7 +1516,7 @@ static int evsel__process_group_data(struct evsel *leader, int cpu, int thread,
v = (struct sample_read_value *) data;
- evsel__set_count(leader, cpu, thread, v[0].value, ena, run);
+ evsel__set_count(leader, cpu_map_idx, thread, v[0].value, ena, run);
for (i = 1; i < nr; i++) {
struct evsel *counter;
@@ -1524,7 +1525,7 @@ static int evsel__process_group_data(struct evsel *leader, int cpu, int thread,
if (!counter)
return -EINVAL;
- evsel__set_count(counter, cpu, thread, v[i].value, ena, run);
+ evsel__set_count(counter, cpu_map_idx, thread, v[i].value, ena, run);
}
return 0;
@@ -1643,16 +1644,16 @@ static void evsel__remove_fd(struct evsel *pos, int nr_cpus, int nr_threads, int
}
static int update_fds(struct evsel *evsel,
- int nr_cpus, int cpu_idx,
+ int nr_cpus, int cpu_map_idx,
int nr_threads, int thread_idx)
{
struct evsel *pos;
- if (cpu_idx >= nr_cpus || thread_idx >= nr_threads)
+ if (cpu_map_idx >= nr_cpus || thread_idx >= nr_threads)
return -EINVAL;
evlist__for_each_entry(evsel->evlist, pos) {
- nr_cpus = pos != evsel ? nr_cpus : cpu_idx;
+ nr_cpus = pos != evsel ? nr_cpus : cpu_map_idx;
evsel__remove_fd(pos, nr_cpus, nr_threads, thread_idx);
@@ -1667,7 +1668,7 @@ static int update_fds(struct evsel *evsel,
}
static bool evsel__ignore_missing_thread(struct evsel *evsel,
- int nr_cpus, int cpu,
+ int nr_cpus, int cpu_map_idx,
struct perf_thread_map *threads,
int thread, int err)
{
@@ -1692,7 +1693,7 @@ static bool evsel__ignore_missing_thread(struct evsel *evsel,
* We should remove fd for missing_thread first
* because thread_map__remove() will decrease threads->nr.
*/
- if (update_fds(evsel, nr_cpus, cpu, threads->nr, thread))
+ if (update_fds(evsel, nr_cpus, cpu_map_idx, threads->nr, thread))
return false;
if (thread_map__remove(threads, thread))
@@ -1974,9 +1975,9 @@ bool evsel__increase_rlimit(enum rlimit_action *set_rlimit)
static int evsel__open_cpu(struct evsel *evsel, struct perf_cpu_map *cpus,
struct perf_thread_map *threads,
- int start_cpu, int end_cpu)
+ int start_cpu_map_idx, int end_cpu_map_idx)
{
- int cpu, thread, nthreads;
+ int idx, thread, nthreads;
int pid = -1, err, old_errno;
enum rlimit_action set_rlimit = NO_CHANGE;
@@ -2003,7 +2004,7 @@ static int evsel__open_cpu(struct evsel *evsel, struct perf_cpu_map *cpus,
display_attr(&evsel->core.attr);
- for (cpu = start_cpu; cpu < end_cpu; cpu++) {
+ for (idx = start_cpu_map_idx; idx < end_cpu_map_idx; idx++) {
for (thread = 0; thread < nthreads; thread++) {
int fd, group_fd;
@@ -2014,17 +2015,17 @@ static int evsel__open_cpu(struct evsel *evsel, struct perf_cpu_map *cpus,
if (!evsel->cgrp && !evsel->core.system_wide)
pid = perf_thread_map__pid(threads, thread);
- group_fd = get_group_fd(evsel, cpu, thread);
+ group_fd = get_group_fd(evsel, idx, thread);
test_attr__ready();
pr_debug2_peo("sys_perf_event_open: pid %d cpu %d group_fd %d flags %#lx",
- pid, cpus->map[cpu], group_fd, evsel->open_flags);
+ pid, cpus->map[idx], group_fd, evsel->open_flags);
- fd = sys_perf_event_open(&evsel->core.attr, pid, cpus->map[cpu],
+ fd = sys_perf_event_open(&evsel->core.attr, pid, cpus->map[idx],
group_fd, evsel->open_flags);
- FD(evsel, cpu, thread) = fd;
+ FD(evsel, idx, thread) = fd;
if (fd < 0) {
err = -errno;
@@ -2034,10 +2035,10 @@ static int evsel__open_cpu(struct evsel *evsel, struct perf_cpu_map *cpus,
goto try_fallback;
}
- bpf_counter__install_pe(evsel, cpu, fd);
+ bpf_counter__install_pe(evsel, idx, fd);
if (unlikely(test_attr__enabled)) {
- test_attr__open(&evsel->core.attr, pid, cpus->map[cpu],
+ test_attr__open(&evsel->core.attr, pid, cpus->map[idx],
fd, group_fd, evsel->open_flags);
}
@@ -2078,7 +2079,7 @@ static int evsel__open_cpu(struct evsel *evsel, struct perf_cpu_map *cpus,
if (evsel__precise_ip_fallback(evsel))
goto retry_open;
- if (evsel__ignore_missing_thread(evsel, cpus->nr, cpu, threads, thread, err)) {
+ if (evsel__ignore_missing_thread(evsel, cpus->nr, idx, threads, thread, err)) {
/* We just removed 1 thread, so lower the upper nthreads limit. */
nthreads--;
@@ -2093,7 +2094,7 @@ static int evsel__open_cpu(struct evsel *evsel, struct perf_cpu_map *cpus,
if (err == -EMFILE && evsel__increase_rlimit(&set_rlimit))
goto retry_open;
- if (err != -EINVAL || cpu > 0 || thread > 0)
+ if (err != -EINVAL || idx > 0 || thread > 0)
goto out_close;
if (evsel__detect_missing_features(evsel))
@@ -2105,12 +2106,12 @@ static int evsel__open_cpu(struct evsel *evsel, struct perf_cpu_map *cpus,
old_errno = errno;
do {
while (--thread >= 0) {
- if (FD(evsel, cpu, thread) >= 0)
- close(FD(evsel, cpu, thread));
- FD(evsel, cpu, thread) = -1;
+ if (FD(evsel, idx, thread) >= 0)
+ close(FD(evsel, idx, thread));
+ FD(evsel, idx, thread) = -1;
}
thread = nthreads;
- } while (--cpu >= 0);
+ } while (--idx >= 0);
errno = old_errno;
return err;
}
@@ -2127,13 +2128,13 @@ void evsel__close(struct evsel *evsel)
perf_evsel__free_id(&evsel->core);
}
-int evsel__open_per_cpu(struct evsel *evsel, struct perf_cpu_map *cpus, int cpu)
+int evsel__open_per_cpu(struct evsel *evsel, struct perf_cpu_map *cpus, int cpu_map_idx)
{
- if (cpu == -1)
+ if (cpu_map_idx == -1)
return evsel__open_cpu(evsel, cpus, NULL, 0,
cpus ? cpus->nr : 1);
- return evsel__open_cpu(evsel, cpus, NULL, cpu, cpu + 1);
+ return evsel__open_cpu(evsel, cpus, NULL, cpu_map_idx, cpu_map_idx + 1);
}
int evsel__open_per_thread(struct evsel *evsel, struct perf_thread_map *threads)
@@ -2954,15 +2955,15 @@ struct perf_env *evsel__env(struct evsel *evsel)
static int store_evsel_ids(struct evsel *evsel, struct evlist *evlist)
{
- int cpu, thread;
+ int cpu_map_idx, thread;
- for (cpu = 0; cpu < xyarray__max_x(evsel->core.fd); cpu++) {
+ for (cpu_map_idx = 0; cpu_map_idx < xyarray__max_x(evsel->core.fd); cpu_map_idx++) {
for (thread = 0; thread < xyarray__max_y(evsel->core.fd);
thread++) {
- int fd = FD(evsel, cpu, thread);
+ int fd = FD(evsel, cpu_map_idx, thread);
if (perf_evlist__id_add_fd(&evlist->core, &evsel->core,
- cpu, thread, fd) < 0)
+ cpu_map_idx, thread, fd) < 0)
return -1;
}
}
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 84e597f6c395..5720ceebffac 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -284,12 +284,12 @@ void arch_evsel__fixup_new_cycles(struct perf_event_attr *attr);
int evsel__set_filter(struct evsel *evsel, const char *filter);
int evsel__append_tp_filter(struct evsel *evsel, const char *filter);
int evsel__append_addr_filter(struct evsel *evsel, const char *filter);
-int evsel__enable_cpu(struct evsel *evsel, int cpu);
+int evsel__enable_cpu(struct evsel *evsel, int cpu_map_idx);
int evsel__enable(struct evsel *evsel);
int evsel__disable(struct evsel *evsel);
-int evsel__disable_cpu(struct evsel *evsel, int cpu);
+int evsel__disable_cpu(struct evsel *evsel, int cpu_map_idx);
-int evsel__open_per_cpu(struct evsel *evsel, struct perf_cpu_map *cpus, int cpu);
+int evsel__open_per_cpu(struct evsel *evsel, struct perf_cpu_map *cpus, int cpu_map_idx);
int evsel__open_per_thread(struct evsel *evsel, struct perf_thread_map *threads);
int evsel__open(struct evsel *evsel, struct perf_cpu_map *cpus,
struct perf_thread_map *threads);
diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c
index 995cb5003133..f7f9757eba23 100644
--- a/tools/perf/util/stat.c
+++ b/tools/perf/util/stat.c
@@ -531,7 +531,7 @@ size_t perf_event__fprintf_stat_config(union perf_event *event, FILE *fp)
int create_perf_stat_counter(struct evsel *evsel,
struct perf_stat_config *config,
struct target *target,
- int cpu)
+ int cpu_map_idx)
{
struct perf_event_attr *attr = &evsel->core.attr;
struct evsel *leader = evsel__leader(evsel);
@@ -585,7 +585,7 @@ int create_perf_stat_counter(struct evsel *evsel,
}
if (target__has_cpu(target) && !target__has_per_thread(target))
- return evsel__open_per_cpu(evsel, evsel__cpus(evsel), cpu);
+ return evsel__open_per_cpu(evsel, evsel__cpus(evsel), cpu_map_idx);
return evsel__open_per_thread(evsel, evsel->core.threads);
}
diff --git a/tools/perf/util/stat.h b/tools/perf/util/stat.h
index 32cf24186229..5e25d53e891b 100644
--- a/tools/perf/util/stat.h
+++ b/tools/perf/util/stat.h
@@ -248,7 +248,7 @@ size_t perf_event__fprintf_stat_config(union perf_event *event, FILE *fp);
int create_perf_stat_counter(struct evsel *evsel,
struct perf_stat_config *config,
struct target *target,
- int cpu);
+ int cpu_map_idx);
void evlist__print_counters(struct evlist *evlist, struct perf_stat_config *config,
struct target *_target, struct timespec *ts, int argc, const char **argv);
--
2.34.1.307.g9b7440fafd-goog
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