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authorThomas Gleixner <tglx@linutronix.de>2020-05-21 23:05:16 +0300
committerIngo Molnar <mingo@kernel.org>2020-05-26 20:05:11 +0300
commit07325d4a90d2d84de45cc07b134fd0f023dbb971 (patch)
tree0c0437193ef9e2501abb778d25a7f5a3d3429935 /include/linux/rcutree.h
parentaaf2bc50df1f4bfc6857fc601fc7b21d5a18c6a1 (diff)
downloadlinux-07325d4a90d2d84de45cc07b134fd0f023dbb971.tar.xz
rcu: Provide rcu_irq_exit_check_preempt()
Provide a debug check which can be invoked from exception return to kernel mode before an attempt is made to schedule. Warn if RCU is not ready for this. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Paul E. McKenney <paulmck@kernel.org> Link: https://lore.kernel.org/r/20200521202117.089709607@linutronix.de
Diffstat (limited to 'include/linux/rcutree.h')
-rw-r--r--include/linux/rcutree.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h
index 9366fa4d0717..d5cc9d675987 100644
--- a/include/linux/rcutree.h
+++ b/include/linux/rcutree.h
@@ -51,6 +51,12 @@ void rcu_irq_exit_preempt(void);
void rcu_irq_enter_irqson(void);
void rcu_irq_exit_irqson(void);
+#ifdef CONFIG_PROVE_RCU
+void rcu_irq_exit_check_preempt(void);
+#else
+static inline void rcu_irq_exit_check_preempt(void) { }
+#endif
+
void exit_rcu(void);
void rcu_scheduler_starting(void);