From 2f529f9b558ca1c1bd74be7437a84e4711743404 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 01 Nov 2024 02:11:33 +0000
Subject: [PATCH] add xenomai
---
kernel/include/linux/rcupdate.h | 14 +++++++++++++-
1 files changed, 13 insertions(+), 1 deletions(-)
diff --git a/kernel/include/linux/rcupdate.h b/kernel/include/linux/rcupdate.h
index 095b3b3..a4388ef 100644
--- a/kernel/include/linux/rcupdate.h
+++ b/kernel/include/linux/rcupdate.h
@@ -118,6 +118,14 @@
static inline void rcu_nocb_flush_deferred_wakeup(void) { }
#endif /* #else #ifdef CONFIG_RCU_NOCB_CPU */
+#ifdef CONFIG_IRQ_PIPELINE
+void rcu_oob_prepare_lock(void);
+void rcu_oob_finish_lock(void);
+#else
+#define rcu_oob_prepare_lock() do { } while (0)
+#define rcu_oob_finish_lock() do { } while (0)
+#endif
+
/**
* RCU_NONIDLE - Indicate idle-loop code that needs RCU readers
* @a: Code that RCU needs to pay attention to.
@@ -290,7 +298,7 @@
static inline int rcu_read_lock_sched_held(void)
{
- return !preemptible();
+ return !running_inband() || !preemptible();
}
static inline int rcu_read_lock_any_held(void)
@@ -646,6 +654,7 @@
*/
static __always_inline void rcu_read_lock(void)
{
+ rcu_oob_prepare_lock();
__rcu_read_lock();
__acquire(RCU);
rcu_lock_acquire(&rcu_lock_map);
@@ -702,6 +711,7 @@
"rcu_read_unlock() used illegally while idle");
__release(RCU);
__rcu_read_unlock();
+ rcu_oob_finish_lock();
rcu_lock_release(&rcu_lock_map); /* Keep acq info for rls diags. */
}
@@ -755,6 +765,7 @@
static inline void rcu_read_lock_sched(void)
{
preempt_disable();
+ rcu_oob_prepare_lock();
__acquire(RCU_SCHED);
rcu_lock_acquire(&rcu_sched_lock_map);
RCU_LOCKDEP_WARN(!rcu_is_watching(),
@@ -779,6 +790,7 @@
"rcu_read_unlock_sched() used illegally while idle");
rcu_lock_release(&rcu_sched_lock_map);
__release(RCU_SCHED);
+ rcu_oob_finish_lock();
preempt_enable();
}
--
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