Re: [PATCH v7 1/5] locking/qspinlock: Rename mcs lock/unlock macros and make... | linux-arm-kernel

quoted hunk

On Mon, Nov 25, 2019 at 04:07:05PM -0500, Alex Kogan wrote:

--- a/arch/arm/include/asm/mcs_spinlock.h
+++ b/arch/arm/include/asm/mcs_spinlock.h
@@ -6,7 +6,7 @@
 #include <asm/spinlock.h>
 
 /* MCS spin-locking. */
-#define arch_mcs_spin_lock_contended(lock)				\
+#define arch_mcs_spin_lock(lock)				\
 do {									\
 	/* Ensure prior stores are observed before we enter wfe. */	\
 	smp_mb();							\
@@ -14,9 +14,9 @@ do {									\
 		wfe();							\
 } while (0)								\
 
-#define arch_mcs_spin_unlock_contended(lock)				\
+#define arch_mcs_pass_lock(lock, val)					\
 do {									\
-	smp_store_release(lock, 1);					\
+	smp_store_release((lock), (val));				\
 	dsb_sev();							\
 } while (0)
So I hate those names; it used to be clear this was the contended path,
not so anymore. arch_mcs_spin_lock() in particular is grossly misnamed
now.

's/arch_mcs_spin_lock/arch_mcs_spin_wait/g' could perhaps work, if you
really want to get rid of the _contended suffix.

Also, pass_lock seems unfortunately named...

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