markers: use rcu_*_sched_notrace and notrace

 * though the function pointer change and the marker enabling are two distinct

 * operations that modifies the execution flow of preemptible code.

 */

void __mark_empty_function(void *probe_private, void *call_private,

notrace void __mark_empty_function(void *probe_private, void *call_private,

	const char *fmt, va_list *args)

{

}

 * need to put a full smp_rmb() in this branch. This is why we do not use

 * rcu_dereference() for the pointer read.

 */

void marker_probe_cb(const struct marker *mdata, void *call_private, ...)

notrace void marker_probe_cb(const struct marker *mdata,

		void *call_private, ...)

{

	va_list args;

	char ptype;

	 * sure the teardown of the callbacks can be done correctly when they

	 * are in modules and they insure RCU read coherency.

	 */

	rcu_read_lock_sched();

	rcu_read_lock_sched_notrace();

	ptype = mdata->ptype;

	if (likely(!ptype)) {

		marker_probe_func *func;

			va_end(args);

		}

	}

	rcu_read_unlock_sched();

	rcu_read_unlock_sched_notrace();

}

EXPORT_SYMBOL_GPL(marker_probe_cb);

 *

 * Should be connected to markers "MARK_NOARGS".

 */

static void marker_probe_cb_noarg(const struct marker *mdata, void *call_private, ...)

static notrace void marker_probe_cb_noarg(const struct marker *mdata,

		void *call_private, ...)

{

	va_list args;	/* not initialized */

	char ptype;

	rcu_read_lock_sched();

	rcu_read_lock_sched_notrace();

	ptype = mdata->ptype;

	if (likely(!ptype)) {

		marker_probe_func *func;

			multi[i].func(multi[i].probe_private, call_private,

				mdata->format, &args);

	}

	rcu_read_unlock_sched();

	rcu_read_unlock_sched_notrace();

}

static void free_old_closure(struct rcu_head *head)