diff options
Diffstat (limited to 'kernel/trace/trace.h')
| -rw-r--r-- | kernel/trace/trace.h | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index da5d9527ebd6..b9c59d9f9a0c 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -1791,6 +1791,7 @@ extern void clear_event_triggers(struct trace_array *tr); enum { EVENT_TRIGGER_FL_PROBE = BIT(0), + EVENT_TRIGGER_FL_COUNT = BIT(1), }; struct event_trigger_data { @@ -1822,6 +1823,10 @@ struct enable_trigger_data { bool hist; }; +bool event_trigger_count(struct event_trigger_data *data, + struct trace_buffer *buffer, void *rec, + struct ring_buffer_event *event); + extern int event_enable_trigger_print(struct seq_file *m, struct event_trigger_data *data); extern void event_enable_trigger_free(struct event_trigger_data *data); @@ -1909,6 +1914,11 @@ extern void event_file_put(struct trace_event_file *file); * registered the trigger (see struct event_command) along with * the trace record, rec. * + * @count_func: If defined and a numeric parameter is passed to the + * trigger, then this function will be called before @trigger + * is called. If this function returns false, then @trigger is not + * executed. + * * @init: An optional initialization function called for the trigger * when the trigger is registered (via the event_command reg() * function). This can be used to perform per-trigger @@ -1936,6 +1946,10 @@ struct event_trigger_ops { struct trace_buffer *buffer, void *rec, struct ring_buffer_event *rbe); + bool (*count_func)(struct event_trigger_data *data, + struct trace_buffer *buffer, + void *rec, + struct ring_buffer_event *rbe); int (*init)(struct event_trigger_data *data); void (*free)(struct event_trigger_data *data); int (*print)(struct seq_file *m, @@ -1962,6 +1976,9 @@ struct event_trigger_ops { * @name: The unique name that identifies the event command. This is * the name used when setting triggers via trigger files. * + * @trigger_ops: The event_trigger_ops implementation associated with + * the command. + * * @trigger_type: A unique id that identifies the event command * 'type'. This value has two purposes, the first to ensure that * only one trigger of the same type can be set at a given time @@ -2013,17 +2030,11 @@ struct event_trigger_ops { * event command, filters set by the user for the command will be * ignored. This is usually implemented by the generic utility * function @set_trigger_filter() (see trace_event_triggers.c). - * - * @get_trigger_ops: The callback function invoked to retrieve the - * event_trigger_ops implementation associated with the command. - * This callback function allows a single event_command to - * support multiple trigger implementations via different sets of - * event_trigger_ops, depending on the value of the @param - * string. */ struct event_command { struct list_head list; char *name; + const struct event_trigger_ops *trigger_ops; enum event_trigger_type trigger_type; int flags; int (*parse)(struct event_command *cmd_ops, @@ -2040,7 +2051,6 @@ struct event_command { int (*set_filter)(char *filter_str, struct event_trigger_data *data, struct trace_event_file *file); - const struct event_trigger_ops *(*get_trigger_ops)(char *cmd, char *param); }; /** |