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perf cpumap: Add new map type for aggregation

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Currently this is a duplicate of perf_cpu_map so that it can be used as
a drop in replacement.

In a later commit it will be changed from a map of ints to use the new
cpu_aggr_id struct.

No functional changes.

Signed-off-by: James Clark <james.clark@arm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: John Garry <john.garry@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20201126141328.6509-6-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
James Clark 2020-11-26 16:13:21 +02:00 • committed by Arnaldo Carvalho de Melo
parent 2760f5a14f
commit cea6575fdc
2 changed files with 25 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

17
tools/perf/util/cpumap.c
View file

@ -95,6 +95,23 @@ struct perf_cpu_map *perf_cpu_map__empty_new(int nr)
return cpus; return cpus;
} }
struct cpu_aggr_map *cpu_aggr_map__empty_new(int nr)
{
struct cpu_aggr_map *cpus = malloc(sizeof(*cpus) + sizeof(int) * nr);
if (cpus != NULL) {
int i;
cpus->nr = nr;
for (i = 0; i < nr; i++)
cpus->map[i] = -1;
refcount_set(&cpus->refcnt, 1);
}
return cpus;
}
static int cpu__get_topology_int(int cpu, const char *name, int *value) static int cpu__get_topology_int(int cpu, const char *name, int *value)
{ {
char path[PATH_MAX]; char path[PATH_MAX];

8
tools/perf/util/cpumap.h
View file

@ -11,9 +11,17 @@ struct aggr_cpu_id {
int id; int id;
}; };
struct cpu_aggr_map {
refcount_t refcnt;
int nr;
int map[];
};
struct perf_record_cpu_map_data; struct perf_record_cpu_map_data;
struct perf_cpu_map *perf_cpu_map__empty_new(int nr); struct perf_cpu_map *perf_cpu_map__empty_new(int nr);
struct cpu_aggr_map *cpu_aggr_map__empty_new(int nr);
struct perf_cpu_map *cpu_map__new_data(struct perf_record_cpu_map_data *data); struct perf_cpu_map *cpu_map__new_data(struct perf_record_cpu_map_data *data);
size_t cpu_map__snprint(struct perf_cpu_map *map, char *buf, size_t size); size_t cpu_map__snprint(struct perf_cpu_map *map, char *buf, size_t size);
size_t cpu_map__snprint_mask(struct perf_cpu_map *map, char *buf, size_t size); size_t cpu_map__snprint_mask(struct perf_cpu_map *map, char *buf, size_t size);