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    Subject[PATCH 13/21] perf evsel: Expose the perf_missing_features struct
    Date
    From: Arnaldo Carvalho de Melo <acme@redhat.com>

    As tools may need to adjust to missing features, as 'perf top' will, in
    the next csets, to cope with a missing 'write_backward' feature.

    Cc: Andi Kleen <ak@linux.intel.com>
    Cc: Jin Yao <yao.jin@linux.intel.com>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Cc: Kan Liang <kan.liang@intel.com>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Wang Nan <wangnan0@huawei.com>
    Link: https://lkml.kernel.org/n/tip-jelngl9q1ooaizvkcput9tic@git.kernel.org
    Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
    ---
    tools/perf/util/evsel.c | 12 +-----------
    tools/perf/util/evsel.h | 14 ++++++++++++++
    2 files changed, 15 insertions(+), 11 deletions(-)

    diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
    index ff359c9ece2e..ef351688b797 100644
    --- a/tools/perf/util/evsel.c
    +++ b/tools/perf/util/evsel.c
    @@ -41,17 +41,7 @@

    #include "sane_ctype.h"

    -static struct {
    - bool sample_id_all;
    - bool exclude_guest;
    - bool mmap2;
    - bool cloexec;
    - bool clockid;
    - bool clockid_wrong;
    - bool lbr_flags;
    - bool write_backward;
    - bool group_read;
    -} perf_missing_features;
    +struct perf_missing_features perf_missing_features;

    static clockid_t clockid;

    diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
    index 846e41644525..a7487c6d1866 100644
    --- a/tools/perf/util/evsel.h
    +++ b/tools/perf/util/evsel.h
    @@ -149,6 +149,20 @@ union u64_swap {
    u32 val32[2];
    };

    +struct perf_missing_features {
    + bool sample_id_all;
    + bool exclude_guest;
    + bool mmap2;
    + bool cloexec;
    + bool clockid;
    + bool clockid_wrong;
    + bool lbr_flags;
    + bool write_backward;
    + bool group_read;
    +};
    +
    +extern struct perf_missing_features perf_missing_features;
    +
    struct cpu_map;
    struct target;
    struct thread_map;
    --
    2.14.3
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