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    Subject[PATCH 3/4] tracing: graph output support for preemptirqsoff/preemptoff tracers
    Date
    hi,

    adding support for graph output for preemptirqsoff/preemptoff tracers.

    wbr,
    jirka


    Signed-off-by: Jiri Olsa <jolsa@redhat.com>
    ---
    kernel/trace/trace_irqsoff.c | 22 +++++++++++++++++-----
    1 files changed, 17 insertions(+), 5 deletions(-)

    diff --git a/kernel/trace/trace_irqsoff.c b/kernel/trace/trace_irqsoff.c
    index f3f43fc..15e05c9 100644
    --- a/kernel/trace/trace_irqsoff.c
    +++ b/kernel/trace/trace_irqsoff.c
    @@ -58,12 +58,12 @@ irq_trace(void)
    # define irq_trace() (0)
    #endif

    -#define TRACE_IRQSOFF_GRAPH 1
    +#define TRACE_DISPLAY_GRAPH 1

    static struct tracer_opt trace_opts[] = {
    #ifdef CONFIG_FUNCTION_GRAPH_TRACER
    /* display latency trace as call graph */
    - { TRACER_OPT(irqsoff-graph, TRACE_IRQSOFF_GRAPH) },
    + { TRACER_OPT(display-graph, TRACE_DISPLAY_GRAPH) },
    #endif
    { } /* Empty entry */
    };
    @@ -73,7 +73,7 @@ static struct tracer_flags tracer_flags = {
    .opts = trace_opts,
    };

    -#define is_graph() (tracer_flags.val & TRACE_IRQSOFF_GRAPH)
    +#define is_graph() (tracer_flags.val & TRACE_DISPLAY_GRAPH)

    /*
    * Sequence count - we record it when starting a measurement and
    @@ -133,7 +133,7 @@ static int irqsoff_set_flag(u32 old_flags, u32 bit, int set)
    {
    int cpu;

    - if (!(bit & TRACE_IRQSOFF_GRAPH))
    + if (!(bit & TRACE_DISPLAY_GRAPH))
    return -EINVAL;

    if (!(is_graph() ^ set))
    @@ -550,8 +550,8 @@ static struct tracer irqsoff_tracer __read_mostly =
    .reset = irqsoff_tracer_reset,
    .start = irqsoff_tracer_start,
    .stop = irqsoff_tracer_stop,
    - .flags = &tracer_flags,
    .print_max = 1,
    + .flags = &tracer_flags,
    .set_flag = irqsoff_set_flag,
    #ifdef CONFIG_FTRACE_SELFTEST
    .selftest = trace_selftest_startup_irqsoff,
    @@ -583,9 +583,15 @@ static struct tracer preemptoff_tracer __read_mostly =
    .start = irqsoff_tracer_start,
    .stop = irqsoff_tracer_stop,
    .print_max = 1,
    + .flags = &tracer_flags,
    + .set_flag = irqsoff_set_flag,
    #ifdef CONFIG_FTRACE_SELFTEST
    .selftest = trace_selftest_startup_preemptoff,
    #endif
    +#ifdef CONFIG_FUNCTION_GRAPH_TRACER
    + .open = irqsoff_trace_open,
    + .close = irqsoff_trace_close,
    +#endif
    };
    # define register_preemptoff(trace) register_tracer(&trace)
    #else
    @@ -611,9 +617,15 @@ static struct tracer preemptirqsoff_tracer __read_mostly =
    .start = irqsoff_tracer_start,
    .stop = irqsoff_tracer_stop,
    .print_max = 1,
    + .flags = &tracer_flags,
    + .set_flag = irqsoff_set_flag,
    #ifdef CONFIG_FTRACE_SELFTEST
    .selftest = trace_selftest_startup_preemptirqsoff,
    #endif
    +#ifdef CONFIG_FUNCTION_GRAPH_TRACER
    + .open = irqsoff_trace_open,
    + .close = irqsoff_trace_close,
    +#endif
    };

    # define register_preemptirqsoff(trace) register_tracer(&trace)
    --
    1.6.6


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