Messages in this thread Patch in this message | | | Subject | [PATCH][GIT PULL][v2.6.32] tracing: Fix event format export | From | Steven Rostedt <> | Date | Fri, 13 Nov 2009 23:12:44 -0500 |
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Ingo,
Please pull the latest tip/tracing/urgent tree, which can be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace.git tip/tracing/urgent
Johannes Berg (1): tracing: Fix event format export
---- include/trace/ftrace.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) --------------------------- commit 811cb50baf63461ce0bdb234927046131fc7fa8b Author: Johannes Berg <johannes@sipsolutions.net> Date: Fri Nov 13 23:40:09 2009 +0100
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>
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h index cc0d966..dacb8ef 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
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