diff options
| author | Johannes Berg <johannes@sipsolutions.net> | 2009-11-13 23:40:09 +0100 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2009-11-14 04:20:34 +0100 |
| commit | 811cb50baf63461ce0bdb234927046131fc7fa8b (patch) | |
| tree | ea161607e94f11754048c8769b37f58d55fe8de6 /include/trace/ftrace.h | |
| parent | tracing: Fix return value of tracing_stats_read() (diff) | |
| download | linux-811cb50baf63461ce0bdb234927046131fc7fa8b.tar.xz linux-811cb50baf63461ce0bdb234927046131fc7fa8b.zip | |
tracing: 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.
Use
"\"%s\"", fmt
instead of
"%s", #fmt
to export the string and not the way it is built.
For example, in net/mac80211/driver-trace.h for the trace event drv_start
there is:
TP_printk(
LOCAL_PR_FMT, LOCAL_PR_ARG
)
Which use to produce:
print fmt: LOCAL_PR_FMT, REC->wiphy_name
Now produces:
print fmt: "%s", REC->wiphy_name
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
LKML-Reference: <20091113224009.GB23942@elte.hu>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'include/trace/ftrace.h')
| -rw-r--r-- | include/trace/ftrace.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h index cc0d9667e182..dacb8ef67000 100644 --- a/include/trace/ftrace.h +++ b/include/trace/ftrace.h @@ -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 |