diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2016-11-14 19:29:48 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-01-14 13:37:18 +0300 |
| commit | 2c935bc57221cc2edc787c72ea0e2d30cdcd3d5e (patch) | |
| tree | 4ccb975ac9142887b4e7e7bf1c0cca5c53d4cf99 /net/bluetooth | |
| parent | 1e24edca0557dba6486d39d3c24c288475432bcf (diff) | |
| download | linux-2c935bc57221cc2edc787c72ea0e2d30cdcd3d5e.tar.xz | |
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) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'net/bluetooth')
| -rw-r--r-- | net/bluetooth/6lowpan.c | 2 | ||||
| -rw-r--r-- | net/bluetooth/a2mp.c | 4 | ||||
| -rw-r--r-- | net/bluetooth/amp.c | 4 | ||||
| -rw-r--r-- | net/bluetooth/l2cap_core.c | 4 |
4 files changed, 7 insertions, 7 deletions
diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c index 1904a93f47d5..d491529332f4 100644 --- a/net/bluetooth/6lowpan.c +++ b/net/bluetooth/6lowpan.c @@ -920,7 +920,7 @@ static void chan_close_cb(struct l2cap_chan *chan) BT_DBG("dev %p removing %speer %p", dev, last ? "last " : "1 ", peer); BT_DBG("chan %p orig refcnt %d", chan, - atomic_read(&chan->kref.refcount)); + kref_read(&chan->kref)); l2cap_chan_put(chan); break; diff --git a/net/bluetooth/a2mp.c b/net/bluetooth/a2mp.c index 5f123c3320a7..f0095fd79818 100644 --- a/net/bluetooth/a2mp.c +++ b/net/bluetooth/a2mp.c @@ -810,7 +810,7 @@ static struct l2cap_chan *a2mp_chan_open(struct l2cap_conn *conn, bool locked) /* AMP Manager functions */ struct amp_mgr *amp_mgr_get(struct amp_mgr *mgr) { - BT_DBG("mgr %p orig refcnt %d", mgr, atomic_read(&mgr->kref.refcount)); + BT_DBG("mgr %p orig refcnt %d", mgr, kref_read(&mgr->kref)); kref_get(&mgr->kref); @@ -833,7 +833,7 @@ static void amp_mgr_destroy(struct kref *kref) int amp_mgr_put(struct amp_mgr *mgr) { - BT_DBG("mgr %p orig refcnt %d", mgr, atomic_read(&mgr->kref.refcount)); + BT_DBG("mgr %p orig refcnt %d", mgr, kref_read(&mgr->kref)); return kref_put(&mgr->kref, &_mgr_destroy); } diff --git a/net/bluetooth/amp.c b/net/bluetooth/amp.c index e32f34189007..02a4ccc04e1e 100644 --- a/net/bluetooth/amp.c +++ b/net/bluetooth/amp.c @@ -24,7 +24,7 @@ void amp_ctrl_get(struct amp_ctrl *ctrl) { BT_DBG("ctrl %p orig refcnt %d", ctrl, - atomic_read(&ctrl->kref.refcount)); + kref_read(&ctrl->kref)); kref_get(&ctrl->kref); } @@ -42,7 +42,7 @@ static void amp_ctrl_destroy(struct kref *kref) int amp_ctrl_put(struct amp_ctrl *ctrl) { BT_DBG("ctrl %p orig refcnt %d", ctrl, - atomic_read(&ctrl->kref.refcount)); + kref_read(&ctrl->kref)); return kref_put(&ctrl->kref, &_ctrl_destroy); } diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index ce0b5dd01953..fc7f321a3823 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -481,14 +481,14 @@ static void l2cap_chan_destroy(struct kref *kref) void l2cap_chan_hold(struct l2cap_chan *c) { - BT_DBG("chan %p orig refcnt %d", c, atomic_read(&c->kref.refcount)); + BT_DBG("chan %p orig refcnt %d", c, kref_read(&c->kref)); kref_get(&c->kref); } void l2cap_chan_put(struct l2cap_chan *c) { - BT_DBG("chan %p orig refcnt %d", c, atomic_read(&c->kref.refcount)); + BT_DBG("chan %p orig refcnt %d", c, kref_read(&c->kref)); kref_put(&c->kref, l2cap_chan_destroy); } |