locking/spinlocks: Make __raw_* lock ops static

If CONFIG_GENERIC_LOCKBREAK=y and CONFIG_DEBUG_LOCK_ALLOC=n
(e.g. sh/sdk7786_defconfig):

    kernel/locking/spinlock.c:68:17: warning: no previous prototype for '__raw_spin_lock' [-Wmissing-prototypes]
    kernel/locking/spinlock.c:80:26: warning: no previous prototype for '__raw_spin_lock_irqsave' [-Wmissing-prototypes]
    kernel/locking/spinlock.c:98:17: warning: no previous prototype for '__raw_spin_lock_irq' [-Wmissing-prototypes]
    kernel/locking/spinlock.c:103:17: warning: no previous prototype for '__raw_spin_lock_bh' [-Wmissing-prototypes]
    kernel/locking/spinlock.c:68:17: warning: no previous prototype for '__raw_read_lock' [-Wmissing-prototypes]
    kernel/locking/spinlock.c:80:26: warning: no previous prototype for '__raw_read_lock_irqsave' [-Wmissing-prototypes]
    kernel/locking/spinlock.c:98:17: warning: no previous prototype for '__raw_read_lock_irq' [-Wmissing-prototypes]
    kernel/locking/spinlock.c:103:17: warning: no previous prototype for '__raw_read_lock_bh' [-Wmissing-prototypes]
    kernel/locking/spinlock.c:68:17: warning: no previous prototype for '__raw_write_lock' [-Wmissing-prototypes]
    kernel/locking/spinlock.c:80:26: warning: no previous prototype for '__raw_write_lock_irqsave' [-Wmissing-prototypes]
    kernel/locking/spinlock.c:98:17: warning: no previous prototype for '__raw_write_lock_irq' [-Wmissing-prototypes]
    kernel/locking/spinlock.c:103:17: warning: no previous prototype for '__raw_write_lock_bh' [-Wmissing-prototypes]

All __raw_* lock ops are internal functions without external callers.
Hence fix this by making them static.

Note that if CONFIG_GENERIC_LOCKBREAK=y, no lock ops are inlined, as all
of CONFIG_INLINE_*_LOCK* depend on !GENERIC_LOCKBREAK.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Waiman Long <longman@redhat.com>
Link: https://lkml.kernel.org/r/7201d7fb408375c6c4df541270d787b1b4a32354.1727879348.git.geert+renesas@glider.be

diff --git a/kernel/locking/spinlock.c b/kernel/locking/spinlock.c
index 438c6086d540ecc4cac819091c03ea9ec5f829da..7685defd7c5262e47815e250f6c7a3b377231987 100644 (file)
--- a/kernel/locking/spinlock.c
+++ b/kernel/locking/spinlock.c
@@ -65,7 +65,7 @@ EXPORT_PER_CPU_SYMBOL(__mmiowb_state);
  * towards that other CPU that it should break the lock ASAP.
  */
 #define BUILD_LOCK_OPS(op, locktype)                                   \
-void __lockfunc __raw_##op##_lock(locktype##_t *lock)                  \
+static void __lockfunc __raw_##op##_lock(locktype##_t *lock)           \
 {                                                                      \
        for (;;) {                                                      \
                preempt_disable();                                      \
@@ -77,7 +77,7 @@ void __lockfunc __raw_##op##_lock(locktype##_t *lock)                 \
        }                                                               \
 }                                                                      \
                                                                        \
-unsigned long __lockfunc __raw_##op##_lock_irqsave(locktype##_t *lock) \
+static unsigned long __lockfunc __raw_##op##_lock_irqsave(locktype##_t *lock) \
 {                                                                      \
        unsigned long flags;                                            \
                                                                        \
@@ -95,12 +95,12 @@ unsigned long __lockfunc __raw_##op##_lock_irqsave(locktype##_t *lock)      \
        return flags;                                                   \
 }                                                                      \
                                                                        \
-void __lockfunc __raw_##op##_lock_irq(locktype##_t *lock)              \
+static void __lockfunc __raw_##op##_lock_irq(locktype##_t *lock)       \
 {                                                                      \
        _raw_##op##_lock_irqsave(lock);                                 \
 }                                                                      \
                                                                        \
-void __lockfunc __raw_##op##_lock_bh(locktype##_t *lock)               \
+static void __lockfunc __raw_##op##_lock_bh(locktype##_t *lock)                \
 {                                                                      \
        unsigned long flags;                                            \
                                                                        \