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    Subject[PATCH] trace:add "gfp_t" support in synthetic_events
    Date
    Add "gfp_t" support in synthetic_events, then the "gfp_t" type
    parameter in some functions can be traced.

    Signed-off-by: Zhengjun Xing <zhengjun.xing@linux.intel.com>
    ---
    kernel/trace/trace_events_hist.c | 4 ++++
    1 file changed, 4 insertions(+)

    diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
    index ca6b0dff60c5..0d3ab01b7cb5 100644
    --- a/kernel/trace/trace_events_hist.c
    +++ b/kernel/trace/trace_events_hist.c
    @@ -752,6 +752,8 @@ static int synth_field_size(char *type)
    size = sizeof(unsigned long);
    else if (strcmp(type, "pid_t") == 0)
    size = sizeof(pid_t);
    + else if (strcmp(type, "gfp_t") == 0)
    + size = sizeof(gfp_t);
    else if (synth_field_is_string(type))
    size = synth_field_string_size(type);

    @@ -792,6 +794,8 @@ static const char *synth_field_fmt(char *type)
    fmt = "%lu";
    else if (strcmp(type, "pid_t") == 0)
    fmt = "%d";
    + else if (strcmp(type, "gfp_t") == 0)
    + fmt = "%u";
    else if (synth_field_is_string(type))
    fmt = "%s";

    --
    2.14.1
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