Lines Matching refs:user
194 typedef void (*user_event_func_t) (struct user_event *user, struct iov_iter *i,
202 static struct user_event_mm *user_event_mm_get_all(struct user_event *user);
204 static int destroy_user_event(struct user_event *user);
205 static bool user_fields_match(struct user_event *user, int argc,
224 static struct user_event *user_event_get(struct user_event *user) in user_event_get() argument
226 refcount_inc(&user->refcnt); in user_event_get()
228 return user; in user_event_get()
233 struct user_event *user = container_of( in delayed_destroy_user_event() local
238 if (!refcount_dec_and_test(&user->refcnt)) in delayed_destroy_user_event()
241 if (destroy_user_event(user)) { in delayed_destroy_user_event()
249 refcount_set(&user->refcnt, 1); in delayed_destroy_user_event()
255 static void user_event_put(struct user_event *user, bool locked) in user_event_put() argument
259 if (unlikely(!user)) in user_event_put()
275 delete = refcount_dec_and_mutex_lock(&user->refcnt, &event_mutex); in user_event_put()
278 delete = refcount_dec_and_test(&user->refcnt); in user_event_put()
291 if (user->reg_flags & USER_EVENT_REG_PERSIST) { in user_event_put()
302 INIT_WORK(&user->put_work, delayed_destroy_user_event); in user_event_put()
315 refcount_set(&user->refcnt, 1); in user_event_put()
317 if (WARN_ON_ONCE(!schedule_work(&user->put_work))) { in user_event_put()
438 struct user_event *user = enabler->event; in user_event_enabler_fault_fixup() local
441 mm->mm, (unsigned long long)uaddr, EVENT_NAME(user)); in user_event_enabler_fault_fixup()
574 static void user_event_enabler_update(struct user_event *user) in user_event_enabler_update() argument
594 mm = user_event_mm_get_all(user); in user_event_enabler_update()
601 if (enabler->event == user) { in user_event_enabler_update()
646 static struct user_event_mm *user_event_mm_get_all(struct user_event *user) in user_event_mm_get_all() argument
674 if (enabler->event == user) { in user_event_mm_get_all()
864 *user_event_enabler_create(struct user_reg *reg, struct user_event *user, in user_event_enabler_create() argument
882 enabler->event = user; in user_event_enabler_create()
910 user_event_get(user); in user_event_enabler_create()
931 bool user_event_last_ref(struct user_event *user) in user_event_last_ref() argument
935 if (user->reg_flags & USER_EVENT_REG_PERSIST) in user_event_last_ref()
938 return refcount_read(&user->refcnt) == last; in user_event_last_ref()
957 struct user_event *user = (struct user_event *)call->data; in user_event_get_fields() local
959 return &user->fields; in user_event_get_fields()
1068 static void user_event_destroy_validators(struct user_event *user) in user_event_destroy_validators() argument
1071 struct list_head *head = &user->validators; in user_event_destroy_validators()
1079 static void user_event_destroy_fields(struct user_event *user) in user_event_destroy_fields() argument
1082 struct list_head *head = &user->fields; in user_event_destroy_fields()
1090 static int user_event_add_field(struct user_event *user, const char *type, in user_event_add_field() argument
1128 list_add_tail(&validator->user_event_link, &user->validators); in user_event_add_field()
1141 list_add(&field->link, &user->fields); in user_event_add_field()
1147 user->min_size = (offset + size) - sizeof(struct trace_entry); in user_event_add_field()
1156 static int user_event_parse_field(char *field, struct user_event *user, in user_event_parse_field() argument
1243 return user_event_add_field(user, type, name, saved_offset, size, in user_event_parse_field()
1247 static int user_event_parse_fields(struct user_event *user, char *args) in user_event_parse_fields() argument
1257 ret = user_event_parse_field(field, user, &offset); in user_event_parse_fields()
1368 static int user_event_set_print_fmt(struct user_event *user, char *buf, int len) in user_event_set_print_fmt() argument
1371 struct list_head *head = &user->fields; in user_event_set_print_fmt()
1402 static int user_event_create_print_fmt(struct user_event *user) in user_event_create_print_fmt() argument
1407 len = user_event_set_print_fmt(user, NULL, 0); in user_event_create_print_fmt()
1414 user_event_set_print_fmt(user, print_fmt, len); in user_event_create_print_fmt()
1416 user->call.print_fmt = print_fmt; in user_event_create_print_fmt()
1432 static int user_event_set_call_visible(struct user_event *user, bool visible) in user_event_set_call_visible() argument
1457 ret = trace_add_event_call(&user->call); in user_event_set_call_visible()
1459 ret = trace_remove_event_call(&user->call); in user_event_set_call_visible()
1467 static int destroy_user_event(struct user_event *user) in destroy_user_event() argument
1474 user_event_destroy_fields(user); in destroy_user_event()
1476 ret = user_event_set_call_visible(user, false); in destroy_user_event()
1481 dyn_event_remove(&user->devent); in destroy_user_event()
1482 hash_del(&user->node); in destroy_user_event()
1484 user_event_destroy_validators(user); in destroy_user_event()
1485 kfree(user->call.print_fmt); in destroy_user_event()
1486 kfree(EVENT_NAME(user)); in destroy_user_event()
1487 kfree(user); in destroy_user_event()
1501 struct user_event *user; in find_user_event() local
1506 hash_for_each_possible(group->register_table, user, node, key) { in find_user_event()
1507 if (strcmp(EVENT_NAME(user), name)) in find_user_event()
1510 if (user_fields_match(user, argc, argv)) in find_user_event()
1511 return user_event_get(user); in find_user_event()
1519 static int user_event_validate(struct user_event *user, void *data, int len) in user_event_validate() argument
1521 struct list_head *head = &user->validators; in user_event_validate()
1555 static void user_event_ftrace(struct user_event *user, struct iov_iter *i, in user_event_ftrace() argument
1579 if (!list_empty(&user->validators) && in user_event_ftrace()
1580 unlikely(user_event_validate(user, entry, size))) in user_event_ftrace()
1596 static void user_event_perf(struct user_event *user, struct iov_iter *i, in user_event_perf() argument
1601 perf_head = this_cpu_ptr(user->call.perf_events); in user_event_perf()
1620 if (!list_empty(&user->validators) && in user_event_perf()
1621 unlikely(user_event_validate(user, perf_entry, size))) in user_event_perf()
1625 user->call.event.type, 1, regs, in user_event_perf()
1639 static void update_enable_bit_for(struct user_event *user) in update_enable_bit_for() argument
1641 struct tracepoint *tp = &user->tracepoint; in update_enable_bit_for()
1670 user->status = status; in update_enable_bit_for()
1672 user_event_enabler_update(user); in update_enable_bit_for()
1682 struct user_event *user = (struct user_event *)call->data; in user_event_reg() local
1685 if (!user) in user_event_reg()
1728 user_event_get(user); in user_event_reg()
1729 update_enable_bit_for(user); in user_event_reg()
1732 update_enable_bit_for(user); in user_event_reg()
1733 user_event_put(user, true); in user_event_reg()
1740 struct user_event *user; in user_event_create() local
1765 ret = user_event_parse_cmd(group, name, &user, USER_EVENT_REG_PERSIST); in user_event_create()
1768 user_event_put(user, false); in user_event_create()
1780 struct user_event *user = container_of(ev, struct user_event, devent); in user_event_show() local
1785 seq_printf(m, "%s%s", USER_EVENTS_PREFIX, EVENT_NAME(user)); in user_event_show()
1787 head = trace_get_fields(&user->call); in user_event_show()
1810 struct user_event *user = container_of(ev, struct user_event, devent); in user_event_is_busy() local
1812 return !user_event_last_ref(user); in user_event_is_busy()
1817 struct user_event *user = container_of(ev, struct user_event, devent); in user_event_free() local
1819 if (!user_event_last_ref(user)) in user_event_free()
1822 if (!user_event_capable(user->reg_flags)) in user_event_free()
1825 return destroy_user_event(user); in user_event_free()
1865 static bool user_fields_match(struct user_event *user, int argc, in user_fields_match() argument
1869 struct list_head *head = &user->fields; in user_fields_match()
1889 struct user_event *user = container_of(ev, struct user_event, devent); in user_event_match() local
1892 match = strcmp(EVENT_NAME(user), event) == 0 && in user_event_match()
1896 match = user_fields_match(user, argc, argv); in user_event_match()
1909 static int user_event_trace_register(struct user_event *user) in user_event_trace_register() argument
1913 ret = register_trace_event(&user->call.event); in user_event_trace_register()
1918 ret = user_event_set_call_visible(user, true); in user_event_trace_register()
1921 unregister_trace_event(&user->call.event); in user_event_trace_register()
2009 struct user_event *user; in user_event_parse() local
2031 user = find_user_event(group, name, argc, (const char **)argv, in user_event_parse()
2038 if (IS_ERR(user)) in user_event_parse()
2039 return PTR_ERR(user); in user_event_parse()
2041 if (user) { in user_event_parse()
2042 *newuser = user; in user_event_parse()
2052 user = kzalloc(sizeof(*user), GFP_KERNEL_ACCOUNT); in user_event_parse()
2054 if (!user) in user_event_parse()
2057 INIT_LIST_HEAD(&user->class.fields); in user_event_parse()
2058 INIT_LIST_HEAD(&user->fields); in user_event_parse()
2059 INIT_LIST_HEAD(&user->validators); in user_event_parse()
2061 user->group = group; in user_event_parse()
2062 user->tracepoint.name = name; in user_event_parse()
2064 ret = user_event_parse_fields(user, args); in user_event_parse()
2069 ret = user_event_create_print_fmt(user); in user_event_parse()
2074 user->call.data = user; in user_event_parse()
2075 user->call.class = &user->class; in user_event_parse()
2076 user->call.name = name; in user_event_parse()
2077 user->call.flags = TRACE_EVENT_FL_TRACEPOINT; in user_event_parse()
2078 user->call.tp = &user->tracepoint; in user_event_parse()
2079 user->call.event.funcs = &user_event_funcs; in user_event_parse()
2080 user->class.system = group->system_name; in user_event_parse()
2082 user->class.fields_array = user_event_fields_array; in user_event_parse()
2083 user->class.get_fields = user_event_get_fields; in user_event_parse()
2084 user->class.reg = user_event_reg; in user_event_parse()
2085 user->class.probe = user_event_ftrace; in user_event_parse()
2087 user->class.perf_probe = user_event_perf; in user_event_parse()
2097 ret = user_event_trace_register(user); in user_event_parse()
2102 user->reg_flags = reg_flags; in user_event_parse()
2104 if (user->reg_flags & USER_EVENT_REG_PERSIST) { in user_event_parse()
2106 refcount_set(&user->refcnt, 2); in user_event_parse()
2109 refcount_set(&user->refcnt, 1); in user_event_parse()
2112 dyn_event_init(&user->devent, &user_event_dops); in user_event_parse()
2113 dyn_event_add(&user->devent, &user->call); in user_event_parse()
2114 hash_add(group->register_table, &user->node, key); in user_event_parse()
2119 *newuser = user; in user_event_parse()
2124 user_event_destroy_fields(user); in user_event_parse()
2125 user_event_destroy_validators(user); in user_event_parse()
2126 kfree(user->call.print_fmt); in user_event_parse()
2127 kfree(user); in user_event_parse()
2136 struct user_event *user; in delete_user_event() local
2142 hash_for_each_possible_safe(group->register_table, user, tmp, node, key) { in delete_user_event()
2143 if (strcmp(EVENT_NAME(user), name)) in delete_user_event()
2146 if (!user_event_last_ref(user)) in delete_user_event()
2149 if (!user_event_capable(user->reg_flags)) in delete_user_event()
2152 ret = destroy_user_event(user); in delete_user_event()
2168 struct user_event *user = NULL; in user_events_write_core() local
2189 user = refs->events[idx]; in user_events_write_core()
2193 if (unlikely(user == NULL)) in user_events_write_core()
2196 if (unlikely(i->count < user->min_size)) in user_events_write_core()
2199 tp = &user->tracepoint; in user_events_write_core()
2226 probe_func(user, ©, tpdata, &faulted); in user_events_write_core()
2284 struct user_event *user) in user_events_ref_add() argument
2297 if (refs->events[i] == user) in user_events_ref_add()
2313 new_refs->events[i] = user_event_get(user); in user_events_ref_add()
2388 struct user_event *user; in user_events_ioctl_reg() local
2417 ret = user_event_parse_cmd(info->group, name, &user, reg.flags); in user_events_ioctl_reg()
2424 ret = user_events_ref_add(info, user); in user_events_ioctl_reg()
2427 user_event_put(user, false); in user_events_ioctl_reg()
2445 enabler = user_event_enabler_create(®, user, &write_result); in user_events_ioctl_reg()
2706 struct user_event *user; in user_seq_show() local
2715 hash_for_each(group->register_table, i, user, node) { in user_seq_show()
2716 status = user->status; in user_seq_show()
2718 seq_printf(m, "%s", EVENT_NAME(user)); in user_seq_show()