linux-kernel - [PATCH v4 15/48] perf cpumap: Document cpu__get

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Date:   Tue,  4 Jan 2022 22:13:18 -0800
From:   Ian Rogers <irogers@...gle.com>
To:     Andi Kleen <ak@...ux.intel.com>, Jiri Olsa <jolsa@...hat.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>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        Vineet Singh <vineet.singh@...el.com>,
        James Clark <james.clark@....com>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Mike Leach <mike.leach@...aro.org>,
        Leo Yan <leo.yan@...aro.org>, coresight@...ts.linaro.org,
        linux-arm-kernel@...ts.infradead.org, zhengjun.xing@...el.com
Cc:     eranian@...gle.com, Ian Rogers <irogers@...gle.com>
Subject: [PATCH v4 15/48] perf cpumap: Document cpu__get_node and remove
 redundant function

cpu_map__get_node_id isn't used externally and merely delegates to
cpu__get_node.

Reviewed-by: James Clark <james.clark@....com>
Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/util/cpumap.c | 11 +++++------
 tools/perf/util/cpumap.h |  5 ++++-
 2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c
index b3e1304aca0c..1626b0991408 100644
--- a/tools/perf/util/cpumap.c
+++ b/tools/perf/util/cpumap.c
@@ -16,6 +16,10 @@
 static int max_cpu_num;
 static int max_present_cpu_num;
 static int max_node_num;
+/**
+ * The numa node X as read from /sys/devices/system/node/nodeX indexed by the
+ * CPU number.
+ */
 static int *cpunode_map;
 
 static struct perf_cpu_map *cpu_map__from_entries(struct cpu_map_entries *cpus)
@@ -222,11 +226,6 @@ int cpu_map__get_core_id(int cpu)
 	return ret ?: value;
 }
 
-int cpu_map__get_node_id(int cpu)
-{
-	return cpu__get_node(cpu);
-}
-
 struct aggr_cpu_id cpu_map__get_core_aggr_by_cpu(int cpu, void *data)
 {
 	struct aggr_cpu_id id;
@@ -250,7 +249,7 @@ struct aggr_cpu_id cpu_map__get_node_aggr_by_cpu(int cpu, void *data __maybe_unu
 {
 	struct aggr_cpu_id id = aggr_cpu_id__empty();
 
-	id.node = cpu_map__get_node_id(cpu);
+	id.node = cpu__get_node(cpu);
 	return id;
 }
 
diff --git a/tools/perf/util/cpumap.h b/tools/perf/util/cpumap.h
index 9589b0001a28..f849f01c5860 100644
--- a/tools/perf/util/cpumap.h
+++ b/tools/perf/util/cpumap.h
@@ -45,7 +45,6 @@ int cpu_map__get_die_id(int cpu);
 struct aggr_cpu_id cpu_map__get_die_aggr_by_cpu(int cpu, void *data);
 int cpu_map__get_core_id(int cpu);
 struct aggr_cpu_id cpu_map__get_core_aggr_by_cpu(int cpu, void *data);
-int cpu_map__get_node_id(int cpu);
 struct aggr_cpu_id cpu_map__get_node_aggr_by_cpu(int cpu, void *data);
 int cpu_map__build_socket_map(struct perf_cpu_map *cpus, struct cpu_aggr_map **sockp);
 int cpu_map__build_die_map(struct perf_cpu_map *cpus, struct cpu_aggr_map **diep);
@@ -58,6 +57,10 @@ int cpu__setup_cpunode_map(void);
 int cpu__max_node(void);
 int cpu__max_cpu(void);
 int cpu__max_present_cpu(void);
+/**
+ * cpu__get_node - Returns the numa node X as read from
+ * /sys/devices/system/node/nodeX for the given CPU.
+ */
 int cpu__get_node(int cpu);
 
 int cpu_map__build_map(struct perf_cpu_map *cpus, struct cpu_aggr_map **res,
-- 
2.34.1.448.ga2b2bfdf31-goog