diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/trace_events.c | 4 | ||||
| -rw-r--r-- | kernel/trace/trace_events_filter.c | 73 | ||||
| -rw-r--r-- | kernel/trace/trace_uprobe.c | 3 |
3 files changed, 19 insertions, 61 deletions
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index 3154eb39241..ef06ce7e9cf 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -1621,7 +1621,6 @@ static void event_remove(struct ftrace_event_call *call) if (file->event_call != call) continue; ftrace_event_enable_disable(file, 0); - destroy_preds(file); /* * The do_for_each_event_file() is * a double loop. After finding the call for this @@ -1748,7 +1747,8 @@ static void __trace_remove_event_call(struct ftrace_event_call *call) { event_remove(call); trace_destroy_fields(call); - destroy_call_preds(call); + free_event_filter(call->filter); + call->filter = NULL; } static int probe_remove_event_call(struct ftrace_event_call *call) diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c index 8a8631926a0..7a8c1528e14 100644 --- a/kernel/trace/trace_events_filter.c +++ b/kernel/trace/trace_events_filter.c @@ -774,17 +774,12 @@ static void __free_preds(struct event_filter *filter) filter->n_preds = 0; } -static void call_filter_disable(struct ftrace_event_call *call) -{ - call->flags &= ~TRACE_EVENT_FL_FILTERED; -} - static void filter_disable(struct ftrace_event_file *file) { struct ftrace_event_call *call = file->event_call; if (call->flags & TRACE_EVENT_FL_USE_CALL_FILTER) - call_filter_disable(call); + call->flags &= ~TRACE_EVENT_FL_FILTERED; else file->flags &= ~FTRACE_EVENT_FL_FILTERED; } @@ -804,32 +799,6 @@ void free_event_filter(struct event_filter *filter) __free_filter(filter); } -void destroy_call_preds(struct ftrace_event_call *call) -{ - __free_filter(call->filter); - call->filter = NULL; -} - -static void destroy_file_preds(struct ftrace_event_file *file) -{ - __free_filter(file->filter); - file->filter = NULL; -} - -/* - * Called when destroying the ftrace_event_file. - * The file is being freed, so we do not need to worry about - * the file being currently used. This is for module code removing - * the tracepoints from within it. - */ -void destroy_preds(struct ftrace_event_file *file) -{ - if (file->event_call->flags & TRACE_EVENT_FL_USE_CALL_FILTER) - destroy_call_preds(file->event_call); - else - destroy_file_preds(file); -} - static struct event_filter *__alloc_filter(void) { struct event_filter *filter; @@ -873,17 +842,14 @@ static inline void __remove_filter(struct ftrace_event_file *file) remove_filter_string(file->filter); } -static void filter_free_subsystem_preds(struct event_subsystem *system, +static void filter_free_subsystem_preds(struct ftrace_subsystem_dir *dir, struct trace_array *tr) { struct ftrace_event_file *file; - struct ftrace_event_call *call; list_for_each_entry(file, &tr->events, list) { - call = file->event_call; - if (strcmp(call->class->system, system->name) != 0) + if (file->system != dir) continue; - __remove_filter(file); } } @@ -901,15 +867,13 @@ static inline void __free_subsystem_filter(struct ftrace_event_file *file) } } -static void filter_free_subsystem_filters(struct event_subsystem *system, +static void filter_free_subsystem_filters(struct ftrace_subsystem_dir *dir, struct trace_array *tr) { struct ftrace_event_file *file; - struct ftrace_event_call *call; list_for_each_entry(file, &tr->events, list) { - call = file->event_call; - if (strcmp(call->class->system, system->name) != 0) + if (file->system != dir) continue; __free_subsystem_filter(file); } @@ -1582,7 +1546,6 @@ static int fold_pred_tree(struct event_filter *filter, static int replace_preds(struct ftrace_event_call *call, struct event_filter *filter, struct filter_parse_state *ps, - char *filter_string, bool dry_run) { char *operand1 = NULL, *operand2 = NULL; @@ -1755,13 +1718,12 @@ struct filter_list { struct event_filter *filter; }; -static int replace_system_preds(struct event_subsystem *system, +static int replace_system_preds(struct ftrace_subsystem_dir *dir, struct trace_array *tr, struct filter_parse_state *ps, char *filter_string) { struct ftrace_event_file *file; - struct ftrace_event_call *call; struct filter_list *filter_item; struct filter_list *tmp; LIST_HEAD(filter_list); @@ -1769,15 +1731,14 @@ static int replace_system_preds(struct event_subsystem *system, int err; list_for_each_entry(file, &tr->events, list) { - call = file->event_call; - if (strcmp(call->class->system, system->name) != 0) + if (file->system != dir) continue; /* * Try to see if the filter can be applied * (filter arg is ignored on dry_run) */ - err = replace_preds(call, NULL, ps, filter_string, true); + err = replace_preds(file->event_call, NULL, ps, true); if (err) event_set_no_set_filter_flag(file); else @@ -1787,9 +1748,7 @@ static int replace_system_preds(struct event_subsystem *system, list_for_each_entry(file, &tr->events, list) { struct event_filter *filter; - call = file->event_call; - - if (strcmp(call->class->system, system->name) != 0) + if (file->system != dir) continue; if (event_no_set_filter_flag(file)) @@ -1811,7 +1770,7 @@ static int replace_system_preds(struct event_subsystem *system, if (err) goto fail_mem; - err = replace_preds(call, filter, ps, filter_string, false); + err = replace_preds(file->event_call, filter, ps, false); if (err) { filter_disable(file); parse_error(ps, FILT_ERR_BAD_SUBSYS_FILTER, 0); @@ -1933,7 +1892,7 @@ static int create_filter(struct ftrace_event_call *call, err = create_filter_start(filter_str, set_str, &ps, &filter); if (!err) { - err = replace_preds(call, filter, ps, filter_str, false); + err = replace_preds(call, filter, ps, false); if (err && set_str) append_filter_err(ps, filter); } @@ -1959,7 +1918,7 @@ int create_event_filter(struct ftrace_event_call *call, * Identical to create_filter() except that it creates a subsystem filter * and always remembers @filter_str. */ -static int create_system_filter(struct event_subsystem *system, +static int create_system_filter(struct ftrace_subsystem_dir *dir, struct trace_array *tr, char *filter_str, struct event_filter **filterp) { @@ -1969,7 +1928,7 @@ static int create_system_filter(struct event_subsystem *system, err = create_filter_start(filter_str, true, &ps, &filter); if (!err) { - err = replace_system_preds(system, tr, ps, filter_str); + err = replace_system_preds(dir, tr, ps, filter_str); if (!err) { /* System filters just show a default message */ kfree(filter->filter_string); @@ -2053,18 +2012,18 @@ int apply_subsystem_event_filter(struct ftrace_subsystem_dir *dir, } if (!strcmp(strstrip(filter_string), "0")) { - filter_free_subsystem_preds(system, tr); + filter_free_subsystem_preds(dir, tr); remove_filter_string(system->filter); filter = system->filter; system->filter = NULL; /* Ensure all filters are no longer used */ synchronize_sched(); - filter_free_subsystem_filters(system, tr); + filter_free_subsystem_filters(dir, tr); __free_filter(filter); goto out_unlock; } - err = create_system_filter(system, tr, filter_string, &filter); + err = create_system_filter(dir, tr, filter_string, &filter); if (filter) { /* * No event actually uses the system filter diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c index 3c9b97e6b1f..33ff6a24b80 100644 --- a/kernel/trace/trace_uprobe.c +++ b/kernel/trace/trace_uprobe.c @@ -265,7 +265,6 @@ alloc_trace_uprobe(const char *group, const char *event, int nargs, bool is_ret) if (is_ret) tu->consumer.ret_handler = uretprobe_dispatcher; init_trace_uprobe_filter(&tu->filter); - tu->tp.call.flags |= TRACE_EVENT_FL_USE_CALL_FILTER; return tu; error: @@ -1292,7 +1291,7 @@ static int register_uprobe_event(struct trace_uprobe *tu) kfree(call->print_fmt); return -ENODEV; } - call->flags = 0; + call->class->reg = trace_uprobe_register; call->data = tu; ret = trace_add_event_call(call); |