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| author |   Pekka Paalanen <pq@iki.fi> | 2008-09-16 22:06:42 +0300 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2008-10-14 10:37:20 +0200 |
| commit | 5bf9a1ee350a10feb94107de32a203d81fbbe706 (patch) | |
| tree | ac6b11aaa35194aed9fe9f1403c9542d070d0c62 /kernel/trace/trace.h | |
| parent | mmiotrace: remove left-over marker cruft (diff) | |
| download | linux-dev-5bf9a1ee350a10feb94107de32a203d81fbbe706.tar.xz linux-dev-5bf9a1ee350a10feb94107de32a203d81fbbe706.zip | |
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.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 648433d18ccb..42f65d0097f0 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 |