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libperf: Add perf_evsel__alloc_id/perf_evsel__free_id functions

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Add perf_evsel__alloc_id()/perf_evsel__free_id() functions to libperf as
internal functions.

Move 'struct perf_sample_id' to internal/evsel.h header and change
'struct perf_sample_id::evsel' to 'struct perf_evsel' and the related
code that touches it.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lore.kernel.org/lkml/20190913132355.21634-28-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa
2019-09-03 10:34:29 +02:00
committed by Arnaldo Carvalho de Melo
parent 1d5af02d7a
commit 70c20369ee
8 changed files with 71 additions and 67 deletions
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27
tools/perf/lib/include/internal/evsel.h
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@@ -5,11 +5,35 @@
#include <linux/types.h>
#include <linux/perf_event.h>
#include <stdbool.h>
#include <sys/types.h>
struct perf_cpu_map;
struct perf_thread_map;
struct xyarray;
/*
* Per fd, to map back from PERF_SAMPLE_ID to evsel, only used when there are
* more than one entry in the evlist.
*/
struct perf_sample_id {
struct hlist_node node;
u64 id;
struct perf_evsel *evsel;
/*
* 'idx' will be used for AUX area sampling. A sample will have AUX area
* data that will be queued for decoding, where there are separate
* queues for each CPU (per-cpu tracing) or task (per-thread tracing).
* The sample ID can be used to lookup 'idx' which is effectively the
* queue number.
*/
int idx;
int cpu;
pid_t tid;
/* Holds total ID period value for PERF_SAMPLE_READ processing. */
u64 period;
};
struct perf_evsel {
struct list_head node;
struct perf_event_attr attr;
@@ -32,4 +56,7 @@ void perf_evsel__free_fd(struct perf_evsel *evsel);
int perf_evsel__read_size(struct perf_evsel *evsel);
int perf_evsel__apply_filter(struct perf_evsel *evsel, const char *filter);
int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads);
void perf_evsel__free_id(struct perf_evsel *evsel);
#endif /* __LIBPERF_INTERNAL_EVSEL_H */