[tip: locking/core] locking: Factor out queued_spin_release()

The following commit has been merged into the locking/core branch of tip:

Commit-ID:     216c6c67f7f1292474de1a3d1ae7d1cb95514264
Gitweb:        https://git.kernel.org/tip/216c6c67f7f1292474de1a3d1ae7d1cb95514264
Author:        Dmitry Ilvokhin <[email protected]>
AuthorDate:    Tue, 04 Aug 2026 07:15:42 
Committer:     Peter Zijlstra <[email protected]>
CommitterDate: Fri, 07 Aug 2026 17:58:09 +02:00

locking: Factor out queued_spin_release()

The contended_release tracepoint needs to hook queued_spin_unlock(), but
architectures with a custom unlock define queued_spin_unlock() directly,
leaving no single generic place to add the tracing.

Introduce queued_spin_release() as the arch-overridable release
primitive and make queued_spin_unlock() a generic wrapper around it.
An architecture that only customizes the release can then override
queued_spin_release() and inherit the generic wrapper.

Rename the MIPS override to queued_spin_release() accordingly. x86
paravirt overrides queued_spin_unlock() directly and is left unchanged.

No functional change intended.

Signed-off-by: Dmitry Ilvokhin <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Acked-by: Juergen Gross <[email protected]>
Link: https://patch.msgid.link/b8daabae6469ad72cc784a911f6cc43a6d45df3a.1785778551.git.d@ilvokhin.com
---
 arch/mips/include/asm/spinlock.h |  6 +++---
 include/asm-generic/qspinlock.h  | 17 ++++++++++++++---
 2 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/arch/mips/include/asm/spinlock.h b/arch/mips/include/asm/spinlock.h
index 6ce2117..c349162 100644
--- a/arch/mips/include/asm/spinlock.h
+++ b/arch/mips/include/asm/spinlock.h
@@ -13,12 +13,12 @@
 
 #include <asm-generic/qspinlock_types.h>
 
-#define	queued_spin_unlock queued_spin_unlock
+#define	queued_spin_release queued_spin_release
 /**
- * queued_spin_unlock - release a queued spinlock
+ * queued_spin_release - release a queued spinlock
  * @lock : Pointer to queued spinlock structure
  */
-static inline void queued_spin_unlock(struct qspinlock *lock)
+static inline void queued_spin_release(struct qspinlock *lock)
 {
 	/* This could be optimised with ARCH_HAS_MMIOWB */
 	mmiowb();
diff --git a/include/asm-generic/qspinlock.h b/include/asm-generic/qspinlock.h
index bf47cca..ae45289 100644
--- a/include/asm-generic/qspinlock.h
+++ b/include/asm-generic/qspinlock.h
@@ -115,12 +115,12 @@ static __always_inline void queued_spin_lock(struct qspinlock *lock)
 }
 #endif
 
-#ifndef queued_spin_unlock
+#ifndef queued_spin_release
 /**
- * queued_spin_unlock - release a queued spinlock
+ * queued_spin_release - release a queued spinlock
  * @lock : Pointer to queued spinlock structure
  */
-static __always_inline void queued_spin_unlock(struct qspinlock *lock)
+static __always_inline void queued_spin_release(struct qspinlock *lock)
 {
 	/*
 	 * unlock() needs release semantics:
@@ -129,6 +129,17 @@ static __always_inline void queued_spin_unlock(struct qspinlock *lock)
 }
 #endif
 
+#ifndef queued_spin_unlock
+/**
+ * queued_spin_unlock - unlock a queued spinlock
+ * @lock : Pointer to queued spinlock structure
+ */
+static __always_inline void queued_spin_unlock(struct qspinlock *lock)
+{
+	queued_spin_release(lock);
+}
+#endif
+
 #ifndef virt_spin_lock
 static __always_inline bool virt_spin_lock(struct qspinlock *lock)
 {