[PATCH v1 03/14] libperf cpumap: Rename perf_cpu_map__empty

From: Ian Rogers
Date: Wed Nov 29 2023 - 01:02:33 EST

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The name perf_cpu_map_empty is misleading as true is also returned
when the map contains an "any" CPU (aka dummy) map. Rename to
perf_cpu_map__has_any_cpu_or_is_empty, later changes will
(re)introduce perf_cpu_map__empty and perf_cpu_map__has_any_cpu.

Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
---
tools/lib/perf/Documentation/libperf.txt | 2 +-
tools/lib/perf/cpumap.c | 2 +-
tools/lib/perf/evlist.c | 4 ++--
tools/lib/perf/include/perf/cpumap.h | 4 ++--
tools/lib/perf/libperf.map | 2 +-
tools/perf/arch/arm/util/cs-etm.c | 10 +++++-----
tools/perf/arch/arm64/util/arm-spe.c | 4 ++--
tools/perf/arch/x86/util/intel-bts.c | 4 ++--
tools/perf/arch/x86/util/intel-pt.c | 10 +++++-----
tools/perf/builtin-c2c.c | 2 +-
tools/perf/builtin-stat.c | 6 +++---
tools/perf/util/auxtrace.c | 4 ++--
tools/perf/util/record.c | 2 +-
tools/perf/util/stat.c | 2 +-
14 files changed, 29 insertions(+), 29 deletions(-)

diff --git a/tools/lib/perf/Documentation/libperf.txt b/tools/lib/perf/Documentation/libperf.txt
index a256a26598b0..fcfb9499ef9c 100644
--- a/tools/lib/perf/Documentation/libperf.txt
+++ b/tools/lib/perf/Documentation/libperf.txt
@@ -46,7 +46,7 @@ SYNOPSIS
void perf_cpu_map__put(struct perf_cpu_map *map);
int perf_cpu_map__cpu(const struct perf_cpu_map *cpus, int idx);
int perf_cpu_map__nr(const struct perf_cpu_map *cpus);
- bool perf_cpu_map__empty(const struct perf_cpu_map *map);
+ bool perf_cpu_map__has_any_cpu_or_is_empty(const struct perf_cpu_map *map);
int perf_cpu_map__max(struct perf_cpu_map *map);
bool perf_cpu_map__has(const struct perf_cpu_map *map, int cpu);

diff --git a/tools/lib/perf/cpumap.c b/tools/lib/perf/cpumap.c
index 463ca8b37d45..49fc98e16514 100644
--- a/tools/lib/perf/cpumap.c
+++ b/tools/lib/perf/cpumap.c
@@ -311,7 +311,7 @@ int perf_cpu_map__nr(const struct perf_cpu_map *cpus)
return cpus ? __perf_cpu_map__nr(cpus) : 1;
}

-bool perf_cpu_map__empty(const struct perf_cpu_map *map)
+bool perf_cpu_map__has_any_cpu_or_is_empty(const struct perf_cpu_map *map)
{
return map ? __perf_cpu_map__cpu(map, 0).cpu == -1 : true;
}
diff --git a/tools/lib/perf/evlist.c b/tools/lib/perf/evlist.c
index 3acbbccc1901..75f36218fdd9 100644
--- a/tools/lib/perf/evlist.c
+++ b/tools/lib/perf/evlist.c
@@ -619,7 +619,7 @@ static int perf_evlist__nr_mmaps(struct perf_evlist *evlist)

/* One for each CPU */
nr_mmaps = perf_cpu_map__nr(evlist->all_cpus);
- if (perf_cpu_map__empty(evlist->all_cpus)) {
+ if (perf_cpu_map__has_any_cpu_or_is_empty(evlist->all_cpus)) {
/* Plus one for each thread */
nr_mmaps += perf_thread_map__nr(evlist->threads);
/* Minus the per-thread CPU (-1) */
@@ -653,7 +653,7 @@ int perf_evlist__mmap_ops(struct perf_evlist *evlist,
if (evlist->pollfd.entries == NULL && perf_evlist__alloc_pollfd(evlist) < 0)
return -ENOMEM;

- if (perf_cpu_map__empty(cpus))
+ if (perf_cpu_map__has_any_cpu_or_is_empty(cpus))
return mmap_per_thread(evlist, ops, mp);

return mmap_per_cpu(evlist, ops, mp);
diff --git a/tools/lib/perf/include/perf/cpumap.h b/tools/lib/perf/include/perf/cpumap.h
index b24bd8b8f34e..9cf361fc5edc 100644
--- a/tools/lib/perf/include/perf/cpumap.h
+++ b/tools/lib/perf/include/perf/cpumap.h
@@ -47,9 +47,9 @@ LIBPERF_API void perf_cpu_map__put(struct perf_cpu_map *map);
LIBPERF_API struct perf_cpu perf_cpu_map__cpu(const struct perf_cpu_map *cpus, int idx);
LIBPERF_API int perf_cpu_map__nr(const struct perf_cpu_map *cpus);
/**
- * perf_cpu_map__empty - is map either empty or the "any CPU"/dummy value.
+ * perf_cpu_map__has_any_cpu_or_is_empty - is map either empty or has the "any CPU"/dummy value.
*/
-LIBPERF_API bool perf_cpu_map__empty(const struct perf_cpu_map *map);
+LIBPERF_API bool perf_cpu_map__has_any_cpu_or_is_empty(const struct perf_cpu_map *map);
LIBPERF_API struct perf_cpu perf_cpu_map__max(const struct perf_cpu_map *map);
LIBPERF_API bool perf_cpu_map__has(const struct perf_cpu_map *map, struct perf_cpu cpu);
LIBPERF_API bool perf_cpu_map__equal(const struct perf_cpu_map *lhs,
diff --git a/tools/lib/perf/libperf.map b/tools/lib/perf/libperf.map
index 8a71f841498e..10b3f3722642 100644
--- a/tools/lib/perf/libperf.map
+++ b/tools/lib/perf/libperf.map
@@ -9,7 +9,7 @@ LIBPERF_0.0.1 {
perf_cpu_map__read;
perf_cpu_map__nr;
perf_cpu_map__cpu;
- perf_cpu_map__empty;
+ perf_cpu_map__has_any_cpu_or_is_empty;
perf_cpu_map__max;
perf_cpu_map__has;
perf_thread_map__new_array;
diff --git a/tools/perf/arch/arm/util/cs-etm.c b/tools/perf/arch/arm/util/cs-etm.c
index 2cf873d71dff..c6b7b3066324 100644
--- a/tools/perf/arch/arm/util/cs-etm.c
+++ b/tools/perf/arch/arm/util/cs-etm.c
@@ -211,7 +211,7 @@ static int cs_etm_validate_config(struct auxtrace_record *itr,
* program can run on any CPUs in this case, thus don't skip
* validation.
*/
- if (!perf_cpu_map__empty(event_cpus) &&
+ if (!perf_cpu_map__has_any_cpu_or_is_empty(event_cpus) &&
!perf_cpu_map__has(event_cpus, cpu))
continue;

@@ -435,7 +435,7 @@ static int cs_etm_recording_options(struct auxtrace_record *itr,
* Also the case of per-cpu mmaps, need the contextID in order to be notified
* when a context switch happened.
*/
- if (!perf_cpu_map__empty(cpus)) {
+ if (!perf_cpu_map__has_any_cpu_or_is_empty(cpus)) {
evsel__set_config_if_unset(cs_etm_pmu, cs_etm_evsel,
"timestamp", 1);
evsel__set_config_if_unset(cs_etm_pmu, cs_etm_evsel,
@@ -461,7 +461,7 @@ static int cs_etm_recording_options(struct auxtrace_record *itr,
evsel->core.attr.sample_period = 1;

/* In per-cpu case, always need the time of mmap events etc */
- if (!perf_cpu_map__empty(cpus))
+ if (!perf_cpu_map__has_any_cpu_or_is_empty(cpus))
evsel__set_sample_bit(evsel, TIME);

err = cs_etm_validate_config(itr, cs_etm_evsel);
@@ -539,7 +539,7 @@ cs_etm_info_priv_size(struct auxtrace_record *itr __maybe_unused,
struct perf_cpu_map *online_cpus = perf_cpu_map__new(NULL);

/* cpu map is not empty, we have specific CPUs to work with */
- if (!perf_cpu_map__empty(event_cpus)) {
+ if (!perf_cpu_map__has_any_cpu_or_is_empty(event_cpus)) {
for (i = 0; i < cpu__max_cpu().cpu; i++) {
struct perf_cpu cpu = { .cpu = i, };

@@ -814,7 +814,7 @@ static int cs_etm_info_fill(struct auxtrace_record *itr,
return -EINVAL;

/* If the cpu_map is empty all online CPUs are involved */
- if (perf_cpu_map__empty(event_cpus)) {
+ if (perf_cpu_map__has_any_cpu_or_is_empty(event_cpus)) {
cpu_map = online_cpus;
} else {
/* Make sure all specified CPUs are online */
diff --git a/tools/perf/arch/arm64/util/arm-spe.c b/tools/perf/arch/arm64/util/arm-spe.c
index e3acc739bd00..51ccbfd3d246 100644
--- a/tools/perf/arch/arm64/util/arm-spe.c
+++ b/tools/perf/arch/arm64/util/arm-spe.c
@@ -232,7 +232,7 @@ static int arm_spe_recording_options(struct auxtrace_record *itr,
* In the case of per-cpu mmaps, sample CPU for AUX event;
* also enable the timestamp tracing for samples correlation.
*/
- if (!perf_cpu_map__empty(cpus)) {
+ if (!perf_cpu_map__has_any_cpu_or_is_empty(cpus)) {
evsel__set_sample_bit(arm_spe_evsel, CPU);
evsel__set_config_if_unset(arm_spe_pmu, arm_spe_evsel,
"ts_enable", 1);
@@ -265,7 +265,7 @@ static int arm_spe_recording_options(struct auxtrace_record *itr,
tracking_evsel->core.attr.sample_period = 1;

/* In per-cpu case, always need the time of mmap events etc */
- if (!perf_cpu_map__empty(cpus)) {
+ if (!perf_cpu_map__has_any_cpu_or_is_empty(cpus)) {
evsel__set_sample_bit(tracking_evsel, TIME);
evsel__set_sample_bit(tracking_evsel, CPU);

diff --git a/tools/perf/arch/x86/util/intel-bts.c b/tools/perf/arch/x86/util/intel-bts.c
index d2c8cac11470..af8ae4647585 100644
--- a/tools/perf/arch/x86/util/intel-bts.c
+++ b/tools/perf/arch/x86/util/intel-bts.c
@@ -143,7 +143,7 @@ static int intel_bts_recording_options(struct auxtrace_record *itr,
if (!opts->full_auxtrace)
return 0;

- if (opts->full_auxtrace && !perf_cpu_map__empty(cpus)) {
+ if (opts->full_auxtrace && !perf_cpu_map__has_any_cpu_or_is_empty(cpus)) {
pr_err(INTEL_BTS_PMU_NAME " does not support per-cpu recording\n");
return -EINVAL;
}
@@ -224,7 +224,7 @@ static int intel_bts_recording_options(struct auxtrace_record *itr,
* In the case of per-cpu mmaps, we need the CPU on the
* AUX event.
*/
- if (!perf_cpu_map__empty(cpus))
+ if (!perf_cpu_map__has_any_cpu_or_is_empty(cpus))
evsel__set_sample_bit(intel_bts_evsel, CPU);
}

diff --git a/tools/perf/arch/x86/util/intel-pt.c b/tools/perf/arch/x86/util/intel-pt.c
index fa0c718b9e72..d199619df3ab 100644
--- a/tools/perf/arch/x86/util/intel-pt.c
+++ b/tools/perf/arch/x86/util/intel-pt.c
@@ -369,7 +369,7 @@ static int intel_pt_info_fill(struct auxtrace_record *itr,
ui__warning("Intel Processor Trace: TSC not available\n");
}

- per_cpu_mmaps = !perf_cpu_map__empty(session->evlist->core.user_requested_cpus);
+ per_cpu_mmaps = !perf_cpu_map__has_any_cpu_or_is_empty(session->evlist->core.user_requested_cpus);

auxtrace_info->type = PERF_AUXTRACE_INTEL_PT;
auxtrace_info->priv[INTEL_PT_PMU_TYPE] = intel_pt_pmu->type;
@@ -774,7 +774,7 @@ static int intel_pt_recording_options(struct auxtrace_record *itr,
* Per-cpu recording needs sched_switch events to distinguish different
* threads.
*/
- if (have_timing_info && !perf_cpu_map__empty(cpus) &&
+ if (have_timing_info && !perf_cpu_map__has_any_cpu_or_is_empty(cpus) &&
!record_opts__no_switch_events(opts)) {
if (perf_can_record_switch_events()) {
bool cpu_wide = !target__none(&opts->target) &&
@@ -832,7 +832,7 @@ static int intel_pt_recording_options(struct auxtrace_record *itr,
* In the case of per-cpu mmaps, we need the CPU on the
* AUX event.
*/
- if (!perf_cpu_map__empty(cpus))
+ if (!perf_cpu_map__has_any_cpu_or_is_empty(cpus))
evsel__set_sample_bit(intel_pt_evsel, CPU);
}

@@ -858,7 +858,7 @@ static int intel_pt_recording_options(struct auxtrace_record *itr,
tracking_evsel->immediate = true;

/* In per-cpu case, always need the time of mmap events etc */
- if (!perf_cpu_map__empty(cpus)) {
+ if (!perf_cpu_map__has_any_cpu_or_is_empty(cpus)) {
evsel__set_sample_bit(tracking_evsel, TIME);
/* And the CPU for switch events */
evsel__set_sample_bit(tracking_evsel, CPU);
@@ -870,7 +870,7 @@ static int intel_pt_recording_options(struct auxtrace_record *itr,
* Warn the user when we do not have enough information to decode i.e.
* per-cpu with no sched_switch (except workload-only).
*/
- if (!ptr->have_sched_switch && !perf_cpu_map__empty(cpus) &&
+ if (!ptr->have_sched_switch && !perf_cpu_map__has_any_cpu_or_is_empty(cpus) &&
!target__none(&opts->target) &&
!intel_pt_evsel->core.attr.exclude_user)
ui__warning("Intel Processor Trace decoding will not be possible except for kernel tracing!\n");
diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index a4cf9de7a7b5..f78eea9e2153 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -2320,7 +2320,7 @@ static int setup_nodes(struct perf_session *session)
nodes[node] = set;

/* empty node, skip */
- if (perf_cpu_map__empty(map))
+ if (perf_cpu_map__has_any_cpu_or_is_empty(map))
continue;

perf_cpu_map__for_each_cpu(cpu, idx, map) {
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index a3af805a1d57..3303aa20f326 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -1316,7 +1316,7 @@ static int cpu__get_cache_id_from_map(struct perf_cpu cpu, char *map)
* be the first online CPU in the cache domain else use the
* first online CPU of the cache domain as the ID.
*/
- if (perf_cpu_map__empty(cpu_map))
+ if (perf_cpu_map__has_any_cpu_or_is_empty(cpu_map))
id = cpu.cpu;
else
id = perf_cpu_map__cpu(cpu_map, 0).cpu;
@@ -1622,7 +1622,7 @@ static int perf_stat_init_aggr_mode(void)
* taking the highest cpu number to be the size of
* the aggregation translate cpumap.
*/
- if (!perf_cpu_map__empty(evsel_list->core.user_requested_cpus))
+ if (!perf_cpu_map__has_any_cpu_or_is_empty(evsel_list->core.user_requested_cpus))
nr = perf_cpu_map__max(evsel_list->core.user_requested_cpus).cpu;
else
nr = 0;
@@ -2289,7 +2289,7 @@ int process_stat_config_event(struct perf_session *session,

perf_event__read_stat_config(&stat_config, &event->stat_config);

- if (perf_cpu_map__empty(st->cpus)) {
+ if (perf_cpu_map__has_any_cpu_or_is_empty(st->cpus)) {
if (st->aggr_mode != AGGR_UNSET)
pr_warning("warning: processing task data, aggregation mode not set\n");
} else if (st->aggr_mode != AGGR_UNSET) {
diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c
index f528c4364d23..3684e6009b63 100644
--- a/tools/perf/util/auxtrace.c
+++ b/tools/perf/util/auxtrace.c
@@ -174,7 +174,7 @@ void auxtrace_mmap_params__set_idx(struct auxtrace_mmap_params *mp,
struct evlist *evlist,
struct evsel *evsel, int idx)
{
- bool per_cpu = !perf_cpu_map__empty(evlist->core.user_requested_cpus);
+ bool per_cpu = !perf_cpu_map__has_any_cpu_or_is_empty(evlist->core.user_requested_cpus);

mp->mmap_needed = evsel->needs_auxtrace_mmap;

@@ -648,7 +648,7 @@ int auxtrace_parse_snapshot_options(struct auxtrace_record *itr,

static int evlist__enable_event_idx(struct evlist *evlist, struct evsel *evsel, int idx)
{
- bool per_cpu_mmaps = !perf_cpu_map__empty(evlist->core.user_requested_cpus);
+ bool per_cpu_mmaps = !perf_cpu_map__has_any_cpu_or_is_empty(evlist->core.user_requested_cpus);

if (per_cpu_mmaps) {
struct perf_cpu evlist_cpu = perf_cpu_map__cpu(evlist->core.all_cpus, idx);
diff --git a/tools/perf/util/record.c b/tools/perf/util/record.c
index 9eb5c6a08999..40290382b2d7 100644
--- a/tools/perf/util/record.c
+++ b/tools/perf/util/record.c
@@ -237,7 +237,7 @@ bool evlist__can_select_event(struct evlist *evlist, const char *str)

evsel = evlist__last(temp_evlist);

- if (!evlist || perf_cpu_map__empty(evlist->core.user_requested_cpus)) {
+ if (!evlist || perf_cpu_map__has_any_cpu_or_is_empty(evlist->core.user_requested_cpus)) {
struct perf_cpu_map *cpus = perf_cpu_map__new(NULL);

if (cpus)
diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c
index ec3506042217..012c4946b9c4 100644
--- a/tools/perf/util/stat.c
+++ b/tools/perf/util/stat.c
@@ -315,7 +315,7 @@ static int check_per_pkg(struct evsel *counter, struct perf_counts_values *vals,
if (!counter->per_pkg)
return 0;

- if (perf_cpu_map__empty(cpus))
+ if (perf_cpu_map__has_any_cpu_or_is_empty(cpus))
return 0;

if (!mask) {
--
2.43.0.rc1.413.gea7ed67945-goog

Next message: Ian Rogers: "[PATCH v1 04/14] libperf cpumap: Replace usage of perf_cpu_map__new(NULL)"
Previous message: Sia Jee Heng: "[PATCH v2 6/6] riscv: dts: starfive: Add initial StarFive JH8100 device tree"
In reply to: Ian Rogers: "[PATCH v1 02/14] libperf cpumap: Rename and prefer sysfs for perf_cpu_map__default_new"
Next in thread: Ian Rogers: "[PATCH v1 04/14] libperf cpumap: Replace usage of perf_cpu_map__new(NULL)"
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