diff options
| author | Jiri Olsa <jolsa@redhat.com> | 2010-04-02 19:01:20 +0200 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2010-04-26 16:55:08 -0400 |
| commit | 9106b69382912ddc403a307b69bf894a6f3004e4 (patch) | |
| tree | b4a08ee1cbdfd8c43544231fa3623c45b1bf9a17 /kernel | |
| parent | 77a7f2e94e6998e307917fe63fa4b6d5162d44e9 (diff) | |
| download | linux-9106b69382912ddc403a307b69bf894a6f3004e4.tar.bz2 | |
tracing: Add ftrace events for graph tracer
Add ftrace events for graph tracer, so the graph output could be shared
with other tracers.
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
LKML-Reference: <1270227683-14631-2-git-send-email-jolsa@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/trace_functions_graph.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c index 669b9c31861d..db9e06bb766e 100644 --- a/kernel/trace/trace_functions_graph.c +++ b/kernel/trace/trace_functions_graph.c @@ -40,7 +40,7 @@ struct fgraph_data { #define TRACE_GRAPH_PRINT_OVERHEAD 0x4 #define TRACE_GRAPH_PRINT_PROC 0x8 #define TRACE_GRAPH_PRINT_DURATION 0x10 -#define TRACE_GRAPH_PRINT_ABS_TIME 0X20 +#define TRACE_GRAPH_PRINT_ABS_TIME 0x20 static struct tracer_opt trace_opts[] = { /* Display overruns? (for self-debug purpose) */ @@ -1096,6 +1096,12 @@ print_graph_function(struct trace_iterator *iter) return TRACE_TYPE_HANDLED; } +static enum print_line_t +print_graph_function_event(struct trace_iterator *iter, int flags) +{ + return print_graph_function(iter); +} + static void print_lat_header(struct seq_file *s) { static const char spaces[] = " " /* 16 spaces */ @@ -1199,6 +1205,16 @@ static void graph_trace_close(struct trace_iterator *iter) } } +static struct trace_event graph_trace_entry_event = { + .type = TRACE_GRAPH_ENT, + .trace = print_graph_function_event, +}; + +static struct trace_event graph_trace_ret_event = { + .type = TRACE_GRAPH_RET, + .trace = print_graph_function_event, +}; + static struct tracer graph_trace __read_mostly = { .name = "function_graph", .open = graph_trace_open, @@ -1220,6 +1236,16 @@ static __init int init_graph_trace(void) { max_bytes_for_cpu = snprintf(NULL, 0, "%d", nr_cpu_ids - 1); + if (!register_ftrace_event(&graph_trace_entry_event)) { + pr_warning("Warning: could not register graph trace events\n"); + return 1; + } + + if (!register_ftrace_event(&graph_trace_ret_event)) { + pr_warning("Warning: could not register graph trace events\n"); + return 1; + } + return register_tracer(&graph_trace); } |