linux-kernel - [PATCH 03/13 v3] perf tools: Add new struct for cpu aggregation

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Message-Id: <20201113171923.29721-4-james.clark@arm.com>
Date:   Fri, 13 Nov 2020 19:19:13 +0200
From:   James Clark <james.clark@....com>
To:     linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        jolsa@...hat.com
Cc:     james.clark@....com, Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Thomas Richter <tmricht@...ux.ibm.com>,
        John Garry <john.garry@...wei.com>
Subject: [PATCH 03/13 v3] perf tools: Add new struct for cpu aggregation

This struct currently has only a single int member so that
it can be used as a drop in replacement for the existing
behaviour.

Comparison and constructor functions have also been added
that will replace usages of '==' and '= -1'.

No functional changes.

Signed-off-by: James Clark <james.clark@....com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Thomas Richter <tmricht@...ux.ibm.com>
Cc: John Garry <john.garry@...wei.com>
---
 tools/perf/util/cpumap.c | 18 ++++++++++++++++++
 tools/perf/util/cpumap.h |  8 ++++++++
 2 files changed, 26 insertions(+)

diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c
index fd7d0a77a9e6..e6b4def17839 100644
--- a/tools/perf/util/cpumap.c
+++ b/tools/perf/util/cpumap.c
@@ -587,3 +587,21 @@ const struct perf_cpu_map *cpu_map__online(void) /* thread unsafe */
 
 	return online;
 }
+
+bool cpu_map__compare_aggr_cpu_id(struct aggr_cpu_id a, struct aggr_cpu_id b)
+{
+	return a.id == b.id;
+}
+
+bool cpu_map__aggr_cpu_id_is_empty(struct aggr_cpu_id a)
+{
+	return a.id == -1;
+}
+
+struct aggr_cpu_id cpu_map__empty_aggr_cpu_id(void)
+{
+	struct aggr_cpu_id ret = {
+		.id = -1
+	};
+	return ret;
+}
diff --git a/tools/perf/util/cpumap.h b/tools/perf/util/cpumap.h
index 3a442f021468..1cdccc69cd4b 100644
--- a/tools/perf/util/cpumap.h
+++ b/tools/perf/util/cpumap.h
@@ -7,6 +7,10 @@
 #include <internal/cpumap.h>
 #include <perf/cpumap.h>
 
+struct aggr_cpu_id {
+	int id;
+};
+
 struct perf_record_cpu_map_data;
 
 struct perf_cpu_map *perf_cpu_map__empty_new(int nr);
@@ -64,4 +68,8 @@ int cpu_map__build_map(struct perf_cpu_map *cpus, struct perf_cpu_map **res,
 int cpu_map__cpu(struct perf_cpu_map *cpus, int idx);
 bool cpu_map__has(struct perf_cpu_map *cpus, int cpu);
 
+bool cpu_map__compare_aggr_cpu_id(struct aggr_cpu_id a, struct aggr_cpu_id b);
+bool cpu_map__aggr_cpu_id_is_empty(struct aggr_cpu_id a);
+struct aggr_cpu_id cpu_map__empty_aggr_cpu_id(void);
+
 #endif /* __PERF_CPUMAP_H */
-- 
2.28.0