linux-master/kernel/tracepoint.c

101 /* Called in removal of a func but failed to allocate a new tp_funcs */
175 	for (i = 0; funcs[i].func; i++)
176 		printk(KERN_DEBUG "Probe %d : %p\n", i, funcs[i].func);
188 	if (WARN_ON(!tp_func->func))
195 		for (iter_probes = 0; old[iter_probes].func; iter_probes++) {
196 			if (old[iter_probes].func == tp_stub_func)
198 			if (old[iter_probes].func == tp_func->func &&
204 	/* + 2 : one for new probe, one for NULL func */
210 		for (iter_probes = 0; old[iter_probes].func; iter_probes++) {
211 			if (old[iter_probes].func == tp_stub_func)
226 	new[nr_probes].func = NULL;
245 	if (tp_func->func) {
246 		for (nr_probes = 0; old[nr_probes].func; nr_probes++) {
247 			if ((old[nr_probes].func == tp_func->func &&
249 			    old[nr_probes].func == tp_stub_func)
269 			for (i = 0; old[i].func; i++) {
270 				if ((old[i].func != tp_func->func ||
272 				    old[i].func != tp_stub_func)
275 			new[nr_probes - nr_del].func = NULL;
282 			for (i = 0; old[i].func; i++) {
283 				if (old[i].func == tp_func->func &&
285 					WRITE_ONCE(old[i].func, tp_stub_func);
301 	if (!tp_funcs[1].func)
303 	if (!tp_funcs[2].func)
310 	void *func = tp->iterator;
316 		func = tp_funcs[0].func;
317 	__static_call_update(tp->static_call_key, tp->static_call_tramp, func);
324 			       struct tracepoint_func *func, int prio,
338 	old = func_add(&tp_funcs, func, prio);
353 		 * Make sure new static func never uses old data after a
375 		 * Make sure static func never uses incorrect data after a
397 		struct tracepoint_func *func)
403 	old = func_remove(&tp_funcs, func);
408 		/* Failed allocating new tp_funcs, replaced func with stub */
423 		 * Make sure new static func never uses old data after a
431 		 * Make sure static func never uses incorrect data after a
448 		 * Make sure static func never uses incorrect data after a
479 	tp_func.func = probe;
508 	tp_func.func = probe;
549 	tp_func.func = probe;