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tracing: Add graph output support for irqsoff tracer

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Add function graph output to irqsoff tracer.

The graph output is enabled by setting new 'display-graph' trace option.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
LKML-Reference: <1270227683-14631-4-git-send-email-jolsa@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Jiri Olsa
2010-04-02 19:01:22 +02:00
committed by Steven Rostedt
parent d7a8d9e907
commit 62b915f106
5 changed files with 324 additions and 33 deletions
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35
kernel/trace/trace.c
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@@ -1808,7 +1808,7 @@ static void print_func_help_header(struct seq_file *m)
}
static void
void
print_trace_header(struct seq_file *m, struct trace_iterator *iter)
{
unsigned long sym_flags = (trace_flags & TRACE_ITER_SYM_MASK);
@@ -2017,7 +2017,7 @@ static enum print_line_t print_bin_fmt(struct trace_iterator *iter)
return event ? event->binary(iter, 0) : TRACE_TYPE_HANDLED;
}
static int trace_empty(struct trace_iterator *iter)
int trace_empty(struct trace_iterator *iter)
{
int cpu;
@@ -2084,6 +2084,23 @@ static enum print_line_t print_trace_line(struct trace_iterator *iter)
return print_trace_fmt(iter);
}
void trace_default_header(struct seq_file *m)
{
struct trace_iterator *iter = m->private;
if (iter->iter_flags & TRACE_FILE_LAT_FMT) {
/* print nothing if the buffers are empty */
if (trace_empty(iter))
return;
print_trace_header(m, iter);
if (!(trace_flags & TRACE_ITER_VERBOSE))
print_lat_help_header(m);
} else {
if (!(trace_flags & TRACE_ITER_VERBOSE))
print_func_help_header(m);
}
}
static int s_show(struct seq_file *m, void *v)
{
struct trace_iterator *iter = v;
@@ -2096,17 +2113,9 @@ static int s_show(struct seq_file *m, void *v)
}
if (iter->trace && iter->trace->print_header)
iter->trace->print_header(m);
else if (iter->iter_flags & TRACE_FILE_LAT_FMT) {
/* print nothing if the buffers are empty */
if (trace_empty(iter))
return 0;
print_trace_header(m, iter);
if (!(trace_flags & TRACE_ITER_VERBOSE))
print_lat_help_header(m);
} else {
if (!(trace_flags & TRACE_ITER_VERBOSE))
print_func_help_header(m);
}
else
trace_default_header(m);
} else if (iter->leftover) {
/*
* If we filled the seq_file buffer earlier, we