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    Subject[PATCH 073/107] libperf: Add perf_evsel__new() function
    Date
    From: Jiri Olsa <jolsa@kernel.org>

    Add a perf_evsel__new() function to create and init a perf_evsel struct
    dynamicaly.

    Signed-off-by: Jiri Olsa <jolsa@kernel.org>
    Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
    Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
    Cc: Andi Kleen <ak@linux.intel.com>
    Cc: Michael Petlan <mpetlan@redhat.com>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Link: http://lkml.kernel.org/r/20190721112506.12306-47-jolsa@kernel.org
    Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
    ---
    tools/perf/lib/evsel.c | 11 +++++++++++
    tools/perf/lib/include/perf/evsel.h | 1 +
    tools/perf/lib/libperf.map | 1 +
    3 files changed, 13 insertions(+)

    diff --git a/tools/perf/lib/evsel.c b/tools/perf/lib/evsel.c
    index 17cba35becc7..8e91738c5c38 100644
    --- a/tools/perf/lib/evsel.c
    +++ b/tools/perf/lib/evsel.c
    @@ -2,9 +2,20 @@
    #include <perf/evsel.h>
    #include <linux/list.h>
    #include <internal/evsel.h>
    +#include <linux/zalloc.h>

    void perf_evsel__init(struct perf_evsel *evsel, struct perf_event_attr *attr)
    {
    INIT_LIST_HEAD(&evsel->node);
    evsel->attr = *attr;
    }
    +
    +struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr)
    +{
    + struct perf_evsel *evsel = zalloc(sizeof(*evsel));
    +
    + if (evsel != NULL)
    + perf_evsel__init(evsel, attr);
    +
    + return evsel;
    +}
    diff --git a/tools/perf/lib/include/perf/evsel.h b/tools/perf/lib/include/perf/evsel.h
    index 295583b89f46..21b66fc1937f 100644
    --- a/tools/perf/lib/include/perf/evsel.h
    +++ b/tools/perf/lib/include/perf/evsel.h
    @@ -9,5 +9,6 @@ struct perf_event_attr;

    LIBPERF_API void perf_evsel__init(struct perf_evsel *evsel,
    struct perf_event_attr *attr);
    +LIBPERF_API struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr);

    #endif /* __LIBPERF_EVSEL_H */
    diff --git a/tools/perf/lib/libperf.map b/tools/perf/lib/libperf.map
    index 5e685d6c7a95..e3eac9b60726 100644
    --- a/tools/perf/lib/libperf.map
    +++ b/tools/perf/lib/libperf.map
    @@ -11,6 +11,7 @@ LIBPERF_0.0.1 {
    perf_thread_map__comm;
    perf_thread_map__get;
    perf_thread_map__put;
    + perf_evsel__new;
    perf_evsel__init;
    perf_evlist__new;
    perf_evlist__init;
    --
    2.21.0
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