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    Subject[PATCH 2.6.32] ftrace: fix event format export
    For some reason the export of the event print
    format to userspace uses '#fmt' which breaks
    if the format string is anything but a plain
    string, for example if it is built with macros
    then the macro names are exported instead of
    their contents.

    "\"%s\"", fmt
    instead of
    "%s", #fmt
    to export the string and not the way it is built.

    Signed-off-by: Johannes Berg <>
    This is making the export of a bunch of events (only checked the
    wireless ones but those are all affected) unusable, so please apply to

    include/trace/ftrace.h | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- wireless-testing.orig/include/trace/ftrace.h 2009-11-13 13:15:21.000000000 +0100
    +++ wireless-testing/include/trace/ftrace.h 2009-11-13 13:34:03.000000000 +0100
    @@ -159,7 +159,7 @@
    #undef __get_str

    #undef TP_printk
    -#define TP_printk(fmt, args...) "%s, %s\n", #fmt, __stringify(args)
    +#define TP_printk(fmt, args...) "\"%s\", %s\n", fmt, __stringify(args)

    #undef TP_fast_assign
    #define TP_fast_assign(args...) args

     \ /
      Last update: 2009-11-13 13:41    [W:0.018 / U:21.228 seconds]
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