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tracing: Give event triggers access to ring_buffer_event

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The ring_buffer event can provide a timestamp that may be useful to
various triggers - pass it into the handlers for that purpose.

Link: http://lkml.kernel.org/r/6de592683b59fa70ffa5d43d0109896623fc1367.1516069914.git.tom.zanussi@linux.intel.com

Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Tom Zanussi
2018-01-15 20:51:42 -06:00
committed by Steven Rostedt (VMware)
parent 2c1ea60b19
commit 1ac4f51c0e
4 changed files with 49 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel/trace/trace_events_trigger.c
+29 -18
View File
@@ -63,7 +63,8 @@ void trigger_data_free(struct event_trigger_data *data)
* any trigger that should be deferred, ETT_NONE if nothing to defer.
*/
enum event_trigger_type
event_triggers_call(struct trace_event_file *file, void *rec)
event_triggers_call(struct trace_event_file *file, void *rec,
struct ring_buffer_event *event)
{
struct event_trigger_data *data;
enum event_trigger_type tt = ETT_NONE;
@@ -76,7 +77,7 @@ event_triggers_call(struct trace_event_file *file, void *rec)
if (data->paused)
continue;
if (!rec) {
data->ops->func(data, rec);
data->ops->func(data, rec, event);
continue;
}
filter = rcu_dereference_sched(data->filter);
@@ -86,7 +87,7 @@ event_triggers_call(struct trace_event_file *file, void *rec)
tt |= data->cmd_ops->trigger_type;
continue;
}
data->ops->func(data, rec);
data->ops->func(data, rec, event);
}
return tt;
}
@@ -108,7 +109,7 @@ EXPORT_SYMBOL_GPL(event_triggers_call);
void
event_triggers_post_call(struct trace_event_file *file,
enum event_trigger_type tt,
void *rec)
void *rec, struct ring_buffer_event *event)
{
struct event_trigger_data *data;
@@ -116,7 +117,7 @@ event_triggers_post_call(struct trace_event_file *file,
if (data->paused)
continue;
if (data->cmd_ops->trigger_type & tt)
data->ops->func(data, rec);
data->ops->func(data, rec, event);
}
}
EXPORT_SYMBOL_GPL(event_triggers_post_call);
@@ -909,7 +910,8 @@ void set_named_trigger_data(struct event_trigger_data *data,
}
static void
traceon_trigger(struct event_trigger_data *data, void *rec)
traceon_trigger(struct event_trigger_data *data, void *rec,
struct ring_buffer_event *event)
{
if (tracing_is_on())
return;
@@ -918,7 +920,8 @@ traceon_trigger(struct event_trigger_data *data, void *rec)
}
static void
traceon_count_trigger(struct event_trigger_data *data, void *rec)
traceon_count_trigger(struct event_trigger_data *data, void *rec,
struct ring_buffer_event *event)
{
if (tracing_is_on())
return;
@@ -933,7 +936,8 @@ traceon_count_trigger(struct event_trigger_data *data, void *rec)
}
static void
traceoff_trigger(struct event_trigger_data *data, void *rec)
traceoff_trigger(struct event_trigger_data *data, void *rec,
struct ring_buffer_event *event)
{
if (!tracing_is_on())
return;
@@ -942,7 +946,8 @@ traceoff_trigger(struct event_trigger_data *data, void *rec)
}
static void
traceoff_count_trigger(struct event_trigger_data *data, void *rec)
traceoff_count_trigger(struct event_trigger_data *data, void *rec,
struct ring_buffer_event *event)
{
if (!tracing_is_on())
return;
@@ -1039,13 +1044,15 @@ static struct event_command trigger_traceoff_cmd = {
#ifdef CONFIG_TRACER_SNAPSHOT
static void
snapshot_trigger(struct event_trigger_data *data, void *rec)
snapshot_trigger(struct event_trigger_data *data, void *rec,
struct ring_buffer_event *event)
{
tracing_snapshot();
}
static void
snapshot_count_trigger(struct event_trigger_data *data, void *rec)
snapshot_count_trigger(struct event_trigger_data *data, void *rec,
struct ring_buffer_event *event)
{
if (!data->count)
return;
@@ -1053,7 +1060,7 @@ snapshot_count_trigger(struct event_trigger_data *data, void *rec)
if (data->count != -1)
(data->count)--;
snapshot_trigger(data, rec);
snapshot_trigger(data, rec, event);
}
static int
@@ -1141,13 +1148,15 @@ static __init int register_trigger_snapshot_cmd(void) { return 0; }
#endif
static void
stacktrace_trigger(struct event_trigger_data *data, void *rec)
stacktrace_trigger(struct event_trigger_data *data, void *rec,
struct ring_buffer_event *event)
{
trace_dump_stack(STACK_SKIP);
}
static void
stacktrace_count_trigger(struct event_trigger_data *data, void *rec)
stacktrace_count_trigger(struct event_trigger_data *data, void *rec,
struct ring_buffer_event *event)
{
if (!data->count)
return;
@@ -1155,7 +1164,7 @@ stacktrace_count_trigger(struct event_trigger_data *data, void *rec)
if (data->count != -1)
(data->count)--;
stacktrace_trigger(data, rec);
stacktrace_trigger(data, rec, event);
}
static int
@@ -1217,7 +1226,8 @@ static __init void unregister_trigger_traceon_traceoff_cmds(void)
}
static void
event_enable_trigger(struct event_trigger_data *data, void *rec)
event_enable_trigger(struct event_trigger_data *data, void *rec,
struct ring_buffer_event *event)
{
struct enable_trigger_data *enable_data = data->private_data;
@@ -1228,7 +1238,8 @@ event_enable_trigger(struct event_trigger_data *data, void *rec)
}
static void
event_enable_count_trigger(struct event_trigger_data *data, void *rec)
event_enable_count_trigger(struct event_trigger_data *data, void *rec,
struct ring_buffer_event *event)
{
struct enable_trigger_data *enable_data = data->private_data;
@@ -1242,7 +1253,7 @@ event_enable_count_trigger(struct event_trigger_data *data, void *rec)
if (data->count != -1)
(data->count)--;
event_enable_trigger(data, rec);
event_enable_trigger(data, rec, event);
}
int event_enable_trigger_print(struct seq_file *m,