tracing: Add event record param to trigger_ops.func()
Some triggers may need access to the trace event, so pass it in. Also fix up the existing trigger funcs and their callers. Link: http://lkml.kernel.org/r/543e31e9fc445ef61077421ab219033401c39846.1449767187.git.tom.zanussi@linux.intel.com Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com> Tested-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Reviewed-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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@ -430,7 +430,8 @@ extern int call_filter_check_discard(struct trace_event_call *call, void *rec,
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extern enum event_trigger_type event_triggers_call(struct trace_event_file *file,
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void *rec);
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extern void event_triggers_post_call(struct trace_event_file *file,
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enum event_trigger_type tt);
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enum event_trigger_type tt,
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void *rec);
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bool trace_event_ignore_this_pid(struct trace_event_file *trace_file);
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@ -517,7 +518,7 @@ event_trigger_unlock_commit(struct trace_event_file *file,
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trace_buffer_unlock_commit(file->tr, buffer, event, irq_flags, pc);
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if (tt)
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event_triggers_post_call(file, tt);
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event_triggers_post_call(file, tt, entry);
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}
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/**
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@ -550,7 +551,7 @@ event_trigger_unlock_commit_regs(struct trace_event_file *file,
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irq_flags, pc, regs);
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if (tt)
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event_triggers_post_call(file, tt);
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event_triggers_post_call(file, tt, entry);
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}
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#ifdef CONFIG_BPF_EVENTS
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@ -1201,7 +1201,8 @@ extern int register_event_command(struct event_command *cmd);
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* @func: The trigger 'probe' function called when the triggering
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* event occurs. The data passed into this callback is the data
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* that was supplied to the event_command @reg() function that
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* registered the trigger (see struct event_command).
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* registered the trigger (see struct event_command) along with
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* the trace record, rec.
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*
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* @init: An optional initialization function called for the trigger
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* when the trigger is registered (via the event_command reg()
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@ -1226,7 +1227,8 @@ extern int register_event_command(struct event_command *cmd);
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* (see trace_event_triggers.c).
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*/
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struct event_trigger_ops {
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void (*func)(struct event_trigger_data *data);
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void (*func)(struct event_trigger_data *data,
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void *rec);
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int (*init)(struct event_trigger_ops *ops,
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struct event_trigger_data *data);
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void (*free)(struct event_trigger_ops *ops,
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@ -73,7 +73,7 @@ event_triggers_call(struct trace_event_file *file, void *rec)
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list_for_each_entry_rcu(data, &file->triggers, list) {
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if (!rec) {
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data->ops->func(data);
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data->ops->func(data, rec);
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continue;
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}
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filter = rcu_dereference_sched(data->filter);
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@ -83,7 +83,7 @@ event_triggers_call(struct trace_event_file *file, void *rec)
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tt |= data->cmd_ops->trigger_type;
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continue;
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}
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data->ops->func(data);
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data->ops->func(data, rec);
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}
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return tt;
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}
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@ -93,6 +93,7 @@ EXPORT_SYMBOL_GPL(event_triggers_call);
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* event_triggers_post_call - Call 'post_triggers' for a trace event
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* @file: The trace_event_file associated with the event
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* @tt: enum event_trigger_type containing a set bit for each trigger to invoke
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* @rec: The trace entry for the event
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*
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* For each trigger associated with an event, invoke the trigger
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* function registered with the associated trigger command, if the
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@ -103,13 +104,14 @@ EXPORT_SYMBOL_GPL(event_triggers_call);
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*/
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void
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event_triggers_post_call(struct trace_event_file *file,
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enum event_trigger_type tt)
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enum event_trigger_type tt,
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void *rec)
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{
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struct event_trigger_data *data;
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list_for_each_entry_rcu(data, &file->triggers, list) {
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if (data->cmd_ops->trigger_type & tt)
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data->ops->func(data);
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data->ops->func(data, rec);
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}
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}
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EXPORT_SYMBOL_GPL(event_triggers_post_call);
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@ -745,7 +747,7 @@ int set_trigger_filter(char *filter_str,
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}
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static void
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traceon_trigger(struct event_trigger_data *data)
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traceon_trigger(struct event_trigger_data *data, void *rec)
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{
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if (tracing_is_on())
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return;
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@ -754,7 +756,7 @@ traceon_trigger(struct event_trigger_data *data)
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}
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static void
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traceon_count_trigger(struct event_trigger_data *data)
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traceon_count_trigger(struct event_trigger_data *data, void *rec)
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{
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if (tracing_is_on())
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return;
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@ -769,7 +771,7 @@ traceon_count_trigger(struct event_trigger_data *data)
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}
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static void
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traceoff_trigger(struct event_trigger_data *data)
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traceoff_trigger(struct event_trigger_data *data, void *rec)
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{
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if (!tracing_is_on())
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return;
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@ -778,7 +780,7 @@ traceoff_trigger(struct event_trigger_data *data)
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}
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static void
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traceoff_count_trigger(struct event_trigger_data *data)
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traceoff_count_trigger(struct event_trigger_data *data, void *rec)
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{
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if (!tracing_is_on())
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return;
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@ -874,13 +876,13 @@ static struct event_command trigger_traceoff_cmd = {
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#ifdef CONFIG_TRACER_SNAPSHOT
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static void
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snapshot_trigger(struct event_trigger_data *data)
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snapshot_trigger(struct event_trigger_data *data, void *rec)
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{
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tracing_snapshot();
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}
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static void
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snapshot_count_trigger(struct event_trigger_data *data)
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snapshot_count_trigger(struct event_trigger_data *data, void *rec)
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{
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if (!data->count)
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return;
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@ -888,7 +890,7 @@ snapshot_count_trigger(struct event_trigger_data *data)
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if (data->count != -1)
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(data->count)--;
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snapshot_trigger(data);
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snapshot_trigger(data, rec);
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}
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static int
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@ -967,13 +969,13 @@ static __init int register_trigger_snapshot_cmd(void) { return 0; }
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#define STACK_SKIP 3
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static void
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stacktrace_trigger(struct event_trigger_data *data)
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stacktrace_trigger(struct event_trigger_data *data, void *rec)
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{
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trace_dump_stack(STACK_SKIP);
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}
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static void
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stacktrace_count_trigger(struct event_trigger_data *data)
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stacktrace_count_trigger(struct event_trigger_data *data, void *rec)
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{
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if (!data->count)
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return;
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@ -981,7 +983,7 @@ stacktrace_count_trigger(struct event_trigger_data *data)
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if (data->count != -1)
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(data->count)--;
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stacktrace_trigger(data);
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stacktrace_trigger(data, rec);
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}
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static int
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@ -1052,7 +1054,7 @@ struct enable_trigger_data {
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};
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static void
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event_enable_trigger(struct event_trigger_data *data)
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event_enable_trigger(struct event_trigger_data *data, void *rec)
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{
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struct enable_trigger_data *enable_data = data->private_data;
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@ -1063,7 +1065,7 @@ event_enable_trigger(struct event_trigger_data *data)
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}
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static void
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event_enable_count_trigger(struct event_trigger_data *data)
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event_enable_count_trigger(struct event_trigger_data *data, void *rec)
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{
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struct enable_trigger_data *enable_data = data->private_data;
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@ -1077,7 +1079,7 @@ event_enable_count_trigger(struct event_trigger_data *data)
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if (data->count != -1)
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(data->count)--;
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event_enable_trigger(data);
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event_enable_trigger(data, rec);
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}
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static int
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