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authorTom Zanussi <tzanussi@gmail.com>2009-11-25 01:15:48 -0600
committerIngo Molnar <mingo@elte.hu>2009-11-28 10:04:26 +0100
commit16c632de64a74644a46e7636db26b2cfb530ca13 (patch)
tree4e7fdb4f84a1fba8b299c61a97bc76a8033e0565 /tools/perf/util/trace-event-parse.c
parenteb9a42caa7a926beb935a22bc59d981b35f0b652 (diff)
downloadop-kernel-dev-16c632de64a74644a46e7636db26b2cfb530ca13.zip
op-kernel-dev-16c632de64a74644a46e7636db26b2cfb530ca13.tar.gz
perf trace: Add Perl scripting support
Implement trace_scripting_ops to make Perl a supported perf trace scripting language. Additionally adds code that allows Perl trace scripts to access the 'flag' and 'symbolic' (__print_flags(), __print_symbolic()) field information parsed from the trace format files. Also adds the Perl implementation of the generate_script() trace_scripting_op, which creates a ready-to-run perf trace Perl script based on existing trace data. Scripts generated by this implementation print out all the fields for each event mentioned in perf.data (and will detect and generate the proper scripting code for 'flag' and 'symbolic' fields), and will additionally generate handlers for the special 'trace_unhandled', 'trace_begin' and 'trace_end' handlers. Script authors can simply remove the printing code to implement their own custom event handling. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Cc: fweisbec@gmail.com Cc: rostedt@goodmis.org Cc: anton@samba.org Cc: hch@infradead.org LKML-Reference: <1259133352-23685-4-git-send-email-tzanussi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/util/trace-event-parse.c')
-rw-r--r--tools/perf/util/trace-event-parse.c18
1 files changed, 13 insertions, 5 deletions
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 85d7163..1f16495 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1888,7 +1888,7 @@ find_any_field(struct event *event, const char *name)
return find_field(event, name);
}
-static unsigned long long read_size(void *ptr, int size)
+unsigned long long read_size(void *ptr, int size)
{
switch (size) {
case 1:
@@ -1973,7 +1973,7 @@ int trace_parse_common_type(void *data)
"common_type");
}
-static int parse_common_pid(void *data)
+int trace_parse_common_pid(void *data)
{
static int pid_offset;
static int pid_size;
@@ -2025,6 +2025,14 @@ struct event *trace_find_event(int id)
return event;
}
+struct event *trace_find_next_event(struct event *event)
+{
+ if (!event)
+ return event_list;
+
+ return event->next;
+}
+
static unsigned long long eval_num_arg(void *data, int size,
struct event *event, struct print_arg *arg)
{
@@ -2164,7 +2172,7 @@ static const struct flag flags[] = {
{ "HRTIMER_RESTART", 1 },
};
-static unsigned long long eval_flag(const char *flag)
+unsigned long long eval_flag(const char *flag)
{
int i;
@@ -2694,7 +2702,7 @@ get_return_for_leaf(int cpu, int cur_pid, unsigned long long cur_func,
if (!(event->flags & EVENT_FL_ISFUNCRET))
return NULL;
- pid = parse_common_pid(next->data);
+ pid = trace_parse_common_pid(next->data);
field = find_field(event, "func");
if (!field)
die("function return does not have field func");
@@ -2980,7 +2988,7 @@ void print_event(int cpu, void *data, int size, unsigned long long nsecs,
return;
}
- pid = parse_common_pid(data);
+ pid = trace_parse_common_pid(data);
if (event->flags & (EVENT_FL_ISFUNCENT | EVENT_FL_ISFUNCRET))
return pretty_print_func_graph(data, size, event, cpu,
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