aboutsummaryrefslogtreecommitdiff
path: root/kernel/trace/trace.h
diff options
context:
space:
mode:
authorPekka Paalanen <pq@iki.fi>2008-09-16 22:06:42 +0300
committerIngo Molnar <mingo@elte.hu>2008-10-14 10:37:20 +0200
commit5bf9a1ee350a10feb94107de32a203d81fbbe706 (patch)
treeac6b11aaa35194aed9fe9f1403c9542d070d0c62 /kernel/trace/trace.h
parent4427414170a63331a9cc36b9598502c5cdfe453b (diff)
ftrace: inject markers via trace_marker file
Allow a user to inject a marker (TRACE_PRINT entry) into the trace ring buffer. The related file operations are derived from code by Frédéric Weisbecker <fweisbec@gmail.com>. Signed-off-by: Pekka Paalanen <pq@iki.fi> Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace/trace.h')
-rw-r--r--kernel/trace/trace.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 648433d18cc..42f65d0097f 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -124,6 +124,10 @@ struct trace_entry {
};
#define TRACE_ENTRY_SIZE sizeof(struct trace_entry)
+#define TRACE_BUF_SIZE 1024
+#define TRACE_PRINT_BUF_SIZE \
+ (sizeof(struct trace_field) - offsetof(struct trace_field, print.buf))
+#define TRACE_CONT_BUF_SIZE sizeof(struct trace_field)
/*
* The CPU trace array - it consists of thousands of trace entries