From 2c935bc57221cc2edc787c72ea0e2d30cdcd3d5e Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Mon, 14 Nov 2016 17:29:48 +0100 Subject: locking/atomic, kref: Add kref_read() Since we need to change the implementation, stop exposing internals. Provide kref_read() to read the current reference count; typically used for debug messages. Kills two anti-patterns: atomic_read(&kref->refcount) kref->refcount.counter Signed-off-by: Peter Zijlstra (Intel) Cc: Andrew Morton Cc: Greg Kroah-Hartman Cc: Linus Torvalds Cc: Paul E. McKenney Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar --- drivers/pci/slot.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/pci/slot.c') diff --git a/drivers/pci/slot.c b/drivers/pci/slot.c index 429d34c348b9..e42909524dee 100644 --- a/drivers/pci/slot.c +++ b/drivers/pci/slot.c @@ -345,7 +345,7 @@ EXPORT_SYMBOL_GPL(pci_create_slot); void pci_destroy_slot(struct pci_slot *slot) { dev_dbg(&slot->bus->dev, "dev %02x, dec refcount to %d\n", - slot->number, atomic_read(&slot->kobj.kref.refcount) - 1); + slot->number, kref_read(&slot->kobj.kref) - 1); mutex_lock(&pci_slot_mutex); kobject_put(&slot->kobj); -- cgit v1.2.3-58-ga151