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    Subject[PATCH 03/22] tools lib traceevent: Add traceevent_host_bigendian function
    Date
    Adding traceevent_host_bigendian function to get host
    endianity. It's used in following patches.

    Signed-off-by: Jiri Olsa <jolsa@redhat.com>
    Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
    Cc: Frederic Weisbecker <fweisbec@gmail.com>
    Cc: Ingo Molnar <mingo@elte.hu>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Paul Mackerras <paulus@samba.org>
    Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
    Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
    Cc: Steven Rostedt <rostedt@goodmis.org>
    Cc: David Ahern <dsahern@gmail.com>
    ---
    tools/lib/traceevent/event-parse.h | 9 +++++++++
    1 file changed, 9 insertions(+)

    diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h
    index a288860..0ad7f6b 100644
    --- a/tools/lib/traceevent/event-parse.h
    +++ b/tools/lib/traceevent/event-parse.h
    @@ -527,6 +527,15 @@ __data2host8(struct pevent *pevent, unsigned long long data)
    __data2host8(pevent, __val); \
    })

    +static inline int traceevent_host_bigendian(void)
    +{
    + unsigned char str[] = { 0x1, 0x2, 0x3, 0x4 };
    + unsigned int *ptr;
    +
    + ptr = (unsigned int *)str;
    + return *ptr == 0x01020304;
    +}
    +
    /* taken from kernel/trace/trace.h */
    enum trace_flag_type {
    TRACE_FLAG_IRQS_OFF = 0x01,
    --
    1.8.3.1


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