Commit-ID: 20c7e5abbd0cdfaa656f46af052a6e6a8ce94775 Gitweb: http://git.kernel.org/tip/20c7e5abbd0cdfaa656f46af052a6e6a8ce94775 Author: Namhyung Kim <[email protected]> AuthorDate: Thu, 16 Jan 2014 11:31:08 +0900 Committer: Arnaldo Carvalho de Melo <[email protected]> CommitDate: Thu, 16 Jan 2014 16:26:24 -0300
tools lib traceevent: Add pevent_unregister_print_function() When a plugin unloaded it needs to unregister its print handler from pevent. So add an unregister function to do it. Signed-off-by: Namhyung Kim <[email protected]> Reviewed-by: Jiri Olsa <[email protected]> Acked-by: Steven Rostedt <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Steven Rostedt <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- tools/lib/traceevent/event-parse.c | 23 +++++++++++++++++++++++ tools/lib/traceevent/event-parse.h | 2 ++ 2 files changed, 25 insertions(+) diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c index d1973cb..1587ea39 100644 --- a/tools/lib/traceevent/event-parse.c +++ b/tools/lib/traceevent/event-parse.c @@ -5560,6 +5560,29 @@ int pevent_register_print_function(struct pevent *pevent, return ret; } +/** + * pevent_unregister_print_function - unregister a helper function + * @pevent: the handle to the pevent + * @func: the function to process the helper function + * @name: the name of the helper function + * + * This function removes existing print handler for function @name. + * + * Returns 0 if the handler was removed successully, -1 otherwise. + */ +int pevent_unregister_print_function(struct pevent *pevent, + pevent_func_handler func, char *name) +{ + struct pevent_function_handler *func_handle; + + func_handle = find_func_handler(pevent, name); + if (func_handle && func_handle->func == func) { + remove_func_handler(pevent, name); + return 0; + } + return -1; +} + static struct event_format *pevent_search_event(struct pevent *pevent, int id, const char *sys_name, const char *event_name) diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h index c48acfb..791c539 100644 --- a/tools/lib/traceevent/event-parse.h +++ b/tools/lib/traceevent/event-parse.h @@ -631,6 +631,8 @@ int pevent_register_print_function(struct pevent *pevent, pevent_func_handler func, enum pevent_func_arg_type ret_type, char *name, ...); +int pevent_unregister_print_function(struct pevent *pevent, + pevent_func_handler func, char *name); struct format_field *pevent_find_common_field(struct event_format *event, const char *name); struct format_field *pevent_find_field(struct event_format *event, const char *name); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
