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    Subject[RFC v2 03/17] perf kwork: Add softirq kwork record support
    Date
    Record softirq events irq:softirq_raise, irq:softirq_entry &
    irq:softirq_exit.

    Test cases:
    Record all events:

    # perf kwork record -o perf_kwork.date -- sleep 1
    [ perf record: Woken up 0 times to write data ]
    [ perf record: Captured and wrote 0.897 MB perf_kwork.date ]
    #
    # perf evlist -i perf_kwork.date
    irq:irq_handler_entry
    irq:irq_handler_exit
    irq:softirq_raise
    irq:softirq_entry
    irq:softirq_exit
    dummy:HG
    # Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events

    Record softirq events:

    # perf kwork -k softirq record -o perf_kwork.date -- sleep 1
    [ perf record: Woken up 1 times to write data ]
    [ perf record: Captured and wrote 0.141 MB perf_kwork.date ]
    #
    # perf evlist -i perf_kwork.date
    irq:softirq_raise
    irq:softirq_entry
    irq:softirq_exit
    dummy:HG
    # Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events

    Signed-off-by: Yang Jihong <yangjihong1@huawei.com>
    ---
    tools/perf/Documentation/perf-kwork.txt | 2 +-
    tools/perf/builtin-kwork.c | 16 +++++++++++++++-
    tools/perf/util/kwork.h | 1 +
    3 files changed, 17 insertions(+), 2 deletions(-)

    diff --git a/tools/perf/Documentation/perf-kwork.txt b/tools/perf/Documentation/perf-kwork.txt
    index 57bd5fa7d5c9..abfdeca2ad39 100644
    --- a/tools/perf/Documentation/perf-kwork.txt
    +++ b/tools/perf/Documentation/perf-kwork.txt
    @@ -32,7 +32,7 @@ OPTIONS

    -k::
    --kwork::
    - List of kwork to profile (irq, etc)
    + List of kwork to profile (irq, softirq, etc)

    -v::
    --verbose::
    diff --git a/tools/perf/builtin-kwork.c b/tools/perf/builtin-kwork.c
    index a26b7fde1e38..2c492c8fd019 100644
    --- a/tools/perf/builtin-kwork.c
    +++ b/tools/perf/builtin-kwork.c
    @@ -37,8 +37,22 @@ static struct kwork_class kwork_irq = {
    .tp_handlers = irq_tp_handlers,
    };

    +const struct evsel_str_handler softirq_tp_handlers[] = {
    + { "irq:softirq_raise", NULL, },
    + { "irq:softirq_entry", NULL, },
    + { "irq:softirq_exit", NULL, },
    +};
    +
    +static struct kwork_class kwork_softirq = {
    + .name = "softirq",
    + .type = KWORK_CLASS_SOFTIRQ,
    + .nr_tracepoints = 3,
    + .tp_handlers = softirq_tp_handlers,
    +};
    +
    static struct kwork_class *kwork_class_supported_list[KWORK_CLASS_MAX] = {
    [KWORK_CLASS_IRQ] = &kwork_irq,
    + [KWORK_CLASS_SOFTIRQ] = &kwork_softirq,
    };

    static void setup_event_list(struct perf_kwork *kwork,
    @@ -145,7 +159,7 @@ int cmd_kwork(int argc, const char **argv)
    OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
    "dump raw trace in ASCII"),
    OPT_STRING('k', "kwork", &kwork.event_list_str, "kwork",
    - "list of kwork to profile (irq, etc)"),
    + "list of kwork to profile (irq, softirq, etc)"),
    OPT_BOOLEAN('f', "force", &kwork.force, "don't complain, do it"),
    OPT_END()
    };
    diff --git a/tools/perf/util/kwork.h b/tools/perf/util/kwork.h
    index f1d89cb058fc..669a81626cb4 100644
    --- a/tools/perf/util/kwork.h
    +++ b/tools/perf/util/kwork.h
    @@ -14,6 +14,7 @@

    enum kwork_class_type {
    KWORK_CLASS_IRQ,
    + KWORK_CLASS_SOFTIRQ,
    KWORK_CLASS_MAX,
    };

    --
    2.30.GIT
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