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authorLai Jiangshan <laijs@cn.fujitsu.com>2009-03-06 17:21:48 +0100
committerIngo Molnar <mingo@elte.hu>2009-03-06 17:59:11 +0100
commit1ba28e02a18cbdbea123836f6c98efb09cbf59ec (patch)
tree41df06a06c702152902ffd7250f284a6efe9b0da /include/linux/module.h
parent1427cdf0592368bdec57276edaf714040ee8744f (diff)
downloadop-kernel-dev-1ba28e02a18cbdbea123836f6c98efb09cbf59ec.zip
op-kernel-dev-1ba28e02a18cbdbea123836f6c98efb09cbf59ec.tar.gz
tracing: add trace_bprintk()
Impact: add a generic printk() for tracing, like trace_printk() trace_bprintk() uses the infrastructure to record events on ring_buffer. [ fweisbec@gmail.com: ported to latest -tip, made it work if !CONFIG_MODULES, never free the format strings from modules because we can't keep track of them and conditionnaly create the ftrace format strings section (reported by Steven Rostedt) ] Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <1236356510-8381-4-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/module.h')
-rw-r--r--include/linux/module.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/module.h b/include/linux/module.h
index 145a755..8cbec97 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -329,6 +329,11 @@ struct module
unsigned int num_tracepoints;
#endif
+#ifdef CONFIG_TRACE_BPRINTK
+ const char **trace_bprintk_fmt_start;
+ unsigned int num_trace_bprintk_fmt;
+#endif
+
#ifdef CONFIG_MODULE_UNLOAD
/* What modules depend on me? */
struct list_head modules_which_use_me;
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