locking/percpu-rwsem: Convert to bool

Use bool where possible.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Davidlohr Bueso <dbueso@suse.de>
Acked-by: Will Deacon <will@kernel.org>
Acked-by: Waiman Long <longman@redhat.com>
Tested-by: Juri Lelli <juri.lelli@redhat.com>
Link: https://lkml.kernel.org/r/20200131151539.984626569@infradead.org

diff --git a/include/linux/percpu-rwsem.h b/include/linux/percpu-rwsem.h
index f2c36fb..4ceaa19 100644 (file)
--- a/include/linux/percpu-rwsem.h
+++ b/include/linux/percpu-rwsem.h
@@ -41,7 +41,7 @@ is_static struct percpu_rw_semaphore name = {                         \
 #define DEFINE_STATIC_PERCPU_RWSEM(name)       \
        __DEFINE_PERCPU_RWSEM(name, static)
 
-extern int __percpu_down_read(struct percpu_rw_semaphore *, int);
+extern bool __percpu_down_read(struct percpu_rw_semaphore *, bool);
 extern void __percpu_up_read(struct percpu_rw_semaphore *);
 
 static inline void percpu_down_read(struct percpu_rw_semaphore *sem)
@@ -69,9 +69,9 @@ static inline void percpu_down_read(struct percpu_rw_semaphore *sem)
        preempt_enable();
 }
 
-static inline int percpu_down_read_trylock(struct percpu_rw_semaphore *sem)
+static inline bool percpu_down_read_trylock(struct percpu_rw_semaphore *sem)
 {
-       int ret = 1;
+       bool ret = true;
 
        preempt_disable();
        /*

diff --git a/kernel/locking/percpu-rwsem.c b/kernel/locking/percpu-rwsem.c
index aa2b118..969389d 100644 (file)
--- a/kernel/locking/percpu-rwsem.c
+++ b/kernel/locking/percpu-rwsem.c
@@ -45,7 +45,7 @@ void percpu_free_rwsem(struct percpu_rw_semaphore *sem)
 }
 EXPORT_SYMBOL_GPL(percpu_free_rwsem);
 
-int __percpu_down_read(struct percpu_rw_semaphore *sem, int try)
+bool __percpu_down_read(struct percpu_rw_semaphore *sem, bool try)
 {
        /*
         * Due to having preemption disabled the decrement happens on
@@ -69,7 +69,7 @@ int __percpu_down_read(struct percpu_rw_semaphore *sem, int try)
         * release in percpu_up_write().
         */
        if (likely(!smp_load_acquire(&sem->readers_block)))
-               return 1;
+               return true;
 
        /*
         * Per the above comment; we still have preemption disabled and
@@ -78,7 +78,7 @@ int __percpu_down_read(struct percpu_rw_semaphore *sem, int try)
        __percpu_up_read(sem);
 
        if (try)
-               return 0;
+               return false;
 
        /*
         * We either call schedule() in the wait, or we'll fall through
@@ -94,7 +94,7 @@ int __percpu_down_read(struct percpu_rw_semaphore *sem, int try)
        __up_read(&sem->rw_sem);
 
        preempt_disable();
-       return 1;
+       return true;
 }
 EXPORT_SYMBOL_GPL(__percpu_down_read);