[xen master] xen/common: Constify the parameter of _spin_is_locked()

[patchbot@xxxxxxx]

commit 543f426eceded943f76f6a943e057b2917d0e72b
Author:     Julien Grall <jgrall@xxxxxxxxxx>
AuthorDate: Fri Jan 27 19:05:16 2023 +0000
Commit:     Julien Grall <julien@xxxxxxx>
CommitDate: Thu Feb 16 21:56:09 2023 +0000

    xen/common: Constify the parameter of _spin_is_locked()
    
    The lock is not meant to be modified by _spin_is_locked(). So constify
    it.
    
    This is helpful to be able to assert the locked is taken when the
    underlying structure is const.
    
    Signed-off-by: Julien Grall <jgrall@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Henry Wang <Henry.Wang@xxxxxxx>
    Tested-by: Henry Wang <Henry.Wang@xxxxxxx> #Arm
---
 xen/common/spinlock.c      | 2 +-
 xen/include/xen/spinlock.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/common/spinlock.c b/xen/common/spinlock.c
index 84996c3fbc..a15f0a2eb6 100644
--- a/xen/common/spinlock.c
+++ b/xen/common/spinlock.c
@@ -368,7 +368,7 @@ void _spin_unlock_irqrestore(spinlock_t *lock, unsigned 
long flags)
     local_irq_restore(flags);
 }
 
-int _spin_is_locked(spinlock_t *lock)
+int _spin_is_locked(const spinlock_t *lock)
 {
     /*
      * Recursive locks may be locked by another CPU, yet we return
diff --git a/xen/include/xen/spinlock.h b/xen/include/xen/spinlock.h
index 2fa6ba3654..ca40c71c88 100644
--- a/xen/include/xen/spinlock.h
+++ b/xen/include/xen/spinlock.h
@@ -185,7 +185,7 @@ void _spin_unlock(spinlock_t *lock);
 void _spin_unlock_irq(spinlock_t *lock);
 void _spin_unlock_irqrestore(spinlock_t *lock, unsigned long flags);
 
-int _spin_is_locked(spinlock_t *lock);
+int _spin_is_locked(const spinlock_t *lock);
 int _spin_trylock(spinlock_t *lock);
 void _spin_barrier(spinlock_t *lock);
 
--
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