1 files changed, 43 insertions, 0 deletions
diff --git a/debian/patches-rt/0314-locking-rtmutex-switch-to-EXPORT_SYMBOL-for-ww_mutex.patch b/debian/patches-rt/0314-locking-rtmutex-switch-to-EXPORT_SYMBOL-for-ww_mutex.patch
new file mode 100644
index 000000000..4cb76be05
--- /dev/null
+++ b/debian/patches-rt/0314-locking-rtmutex-switch-to-EXPORT_SYMBOL-for-ww_mutex.patch
@@ -0,0 +1,43 @@
+From a02b1841d962977869e02fff684931b53c8d4232 Mon Sep 17 00:00:00 2001
+From: Yajun Deng <yajun.deng@linux.dev>
+Date: Wed, 3 Aug 2022 14:24:30 +0800
+Subject: [PATCH 314/323] locking/rtmutex: switch to EXPORT_SYMBOL() for
+ ww_mutex_lock{,_interruptible}()
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.204-rt100.tar.xz
+
+We can use EXPORT_SYMBOL() instead of EXPORT_SYMBOL_GPL() in
+ww_mutex_lock_interruptible() and ww_mutex_lock(). That match
+ww_mutex_unlock() well. And also good for 3rd kernel modules.
+
+Link: https://lore.kernel.org/r/20220803062430.1307312-1-yajun.deng@linux.dev
+Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
+Signed-off-by: Luis Claudio R. Goncalves <lgoncalv@redhat.com>
+---
+ kernel/locking/rtmutex.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c
+index 31b374d36d04..b110fc57f733 100644
+--- a/kernel/locking/rtmutex.c
++++ b/kernel/locking/rtmutex.c
+@@ -2513,7 +2513,7 @@ ww_mutex_lock_interruptible(struct ww_mutex *lock, struct ww_acquire_ctx *ctx)
+ 
+ 	return ret;
+ }
+-EXPORT_SYMBOL_GPL(ww_mutex_lock_interruptible);
++EXPORT_SYMBOL(ww_mutex_lock_interruptible);
+ 
+ int __sched
+ ww_mutex_lock(struct ww_mutex *lock, struct ww_acquire_ctx *ctx)
+@@ -2533,7 +2533,7 @@ ww_mutex_lock(struct ww_mutex *lock, struct ww_acquire_ctx *ctx)
+ 
+ 	return ret;
+ }
+-EXPORT_SYMBOL_GPL(ww_mutex_lock);
++EXPORT_SYMBOL(ww_mutex_lock);
+ 
+ void __sched ww_mutex_unlock(struct ww_mutex *lock)
+ {
+-- 
+2.43.0
+