diff options
Diffstat (limited to 'kernel/trace/trace_dynevent.h')
| -rw-r--r-- | kernel/trace/trace_dynevent.h | 52 |
1 files changed, 44 insertions, 8 deletions
diff --git a/kernel/trace/trace_dynevent.h b/kernel/trace/trace_dynevent.h index 8c334064e4d6..beee3f8d7544 100644 --- a/kernel/trace/trace_dynevent.h +++ b/kernel/trace/trace_dynevent.h @@ -29,21 +29,22 @@ struct dyn_event; * @show: Showing method. This is invoked when user reads the event definitions * via dynamic_events interface. * @is_busy: Check whether given event is busy so that it can not be deleted. - * Return true if it is busy, otherwides false. - * @free: Delete the given event. Return 0 if success, otherwides error. - * @match: Check whether given event and system name match this event. - * Return true if it matches, otherwides false. + * Return true if it is busy, otherwise false. + * @free: Delete the given event. Return 0 if success, otherwise error. + * @match: Check whether given event and system name match this event. The argc + * and argv is used for exact match. Return true if it matches, otherwise + * false. * * Except for @create, these methods are called under holding event_mutex. */ struct dyn_event_operations { struct list_head list; - int (*create)(int argc, const char *argv[]); + int (*create)(const char *raw_command); int (*show)(struct seq_file *m, struct dyn_event *ev); bool (*is_busy)(struct dyn_event *ev); int (*free)(struct dyn_event *ev); bool (*match)(const char *system, const char *event, - struct dyn_event *ev); + int argc, const char **argv, struct dyn_event *ev); }; /* Register new dyn_event type -- must be called at first */ @@ -75,13 +76,15 @@ int dyn_event_init(struct dyn_event *ev, struct dyn_event_operations *ops) return 0; } -static inline int dyn_event_add(struct dyn_event *ev) +static inline int dyn_event_add(struct dyn_event *ev, + struct trace_event_call *call) { lockdep_assert_held(&event_mutex); if (!ev || !ev->ops) return -EINVAL; + call->flags |= TRACE_EVENT_FL_DYNAMIC; list_add_tail(&ev->list, &dyn_event_list); return 0; } @@ -96,7 +99,8 @@ void *dyn_event_seq_start(struct seq_file *m, loff_t *pos); void *dyn_event_seq_next(struct seq_file *m, void *v, loff_t *pos); void dyn_event_seq_stop(struct seq_file *m, void *v); int dyn_events_release_all(struct dyn_event_operations *type); -int dyn_event_release(int argc, char **argv, struct dyn_event_operations *type); +int dyn_event_release(const char *raw_command, struct dyn_event_operations *type); +int dyn_event_create(const char *raw_command, struct dyn_event_operations *type); /* * for_each_dyn_event - iterate over the dyn_event list @@ -116,4 +120,36 @@ int dyn_event_release(int argc, char **argv, struct dyn_event_operations *type); #define for_each_dyn_event_safe(pos, n) \ list_for_each_entry_safe(pos, n, &dyn_event_list, list) +extern void dynevent_cmd_init(struct dynevent_cmd *cmd, char *buf, int maxlen, + enum dynevent_type type, + dynevent_create_fn_t run_command); + +typedef int (*dynevent_check_arg_fn_t)(void *data); + +struct dynevent_arg { + const char *str; + char separator; /* e.g. ';', ',', or nothing */ +}; + +extern void dynevent_arg_init(struct dynevent_arg *arg, + char separator); +extern int dynevent_arg_add(struct dynevent_cmd *cmd, + struct dynevent_arg *arg, + dynevent_check_arg_fn_t check_arg); + +struct dynevent_arg_pair { + const char *lhs; + const char *rhs; + char operator; /* e.g. '=' or nothing */ + char separator; /* e.g. ';', ',', or nothing */ +}; + +extern void dynevent_arg_pair_init(struct dynevent_arg_pair *arg_pair, + char operator, char separator); + +extern int dynevent_arg_pair_add(struct dynevent_cmd *cmd, + struct dynevent_arg_pair *arg_pair, + dynevent_check_arg_fn_t check_arg); +extern int dynevent_str_add(struct dynevent_cmd *cmd, const char *str); + #endif |