#endif
#define MODULE_PARAM_PREFIX "rcupdate."
+#ifndef CONFIG_TINY_RCU
module_param(rcu_expedited, int, 0);
+module_param(rcu_normal, int, 0);
+static int rcu_normal_after_boot;
+module_param(rcu_normal_after_boot, int, 0);
+#endif /* #ifndef CONFIG_TINY_RCU */
#if defined(CONFIG_DEBUG_LOCK_ALLOC) && defined(CONFIG_PREEMPT_COUNT)
/**
#ifndef CONFIG_TINY_RCU
+/*
+ * Should expedited grace-period primitives always fall back to their
+ * non-expedited counterparts? Intended for use within RCU. Note
+ * that if the user specifies both rcu_expedited and rcu_normal, then
+ * rcu_normal wins.
+ */
+bool rcu_gp_is_normal(void)
+{
+ return READ_ONCE(rcu_normal);
+}
+
static atomic_t rcu_expedited_nesting =
ATOMIC_INIT(IS_ENABLED(CONFIG_RCU_EXPEDITE_BOOT) ? 1 : 0);
}
EXPORT_SYMBOL_GPL(rcu_unexpedite_gp);
-#endif /* #ifndef CONFIG_TINY_RCU */
-
/*
* Inform RCU of the end of the in-kernel boot sequence.
*/
{
if (IS_ENABLED(CONFIG_RCU_EXPEDITE_BOOT))
rcu_unexpedite_gp();
+ if (rcu_normal_after_boot)
+ WRITE_ONCE(rcu_normal, 1);
}
+#endif /* #ifndef CONFIG_TINY_RCU */
+
#ifdef CONFIG_PREEMPT_RCU
/*