diff options
Diffstat (limited to 'drivers/block/xen-blkback/xenbus.c')
| -rw-r--r-- | drivers/block/xen-blkback/xenbus.c | 31 |
1 files changed, 18 insertions, 13 deletions
diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c index b33083e67f8c..5448dc899d32 100644 --- a/drivers/block/xen-blkback/xenbus.c +++ b/drivers/block/xen-blkback/xenbus.c @@ -14,6 +14,8 @@ */ +#define pr_fmt(fmt) "xen-blkback: " fmt + #include <stdarg.h> #include <linux/module.h> #include <linux/kthread.h> @@ -426,14 +428,14 @@ static int xen_vbd_create(struct xen_blkif *blkif, blkif_vdev_t handle, FMODE_READ : FMODE_WRITE, NULL); if (IS_ERR(bdev)) { - DPRINTK("xen_vbd_create: device %08x could not be opened.\n", + pr_warn("xen_vbd_create: device %08x could not be opened\n", vbd->pdevice); return -ENOENT; } vbd->bdev = bdev; if (vbd->bdev->bd_disk == NULL) { - DPRINTK("xen_vbd_create: device %08x doesn't exist.\n", + pr_warn("xen_vbd_create: device %08x doesn't exist\n", vbd->pdevice); xen_vbd_free(vbd); return -ENOENT; @@ -452,7 +454,7 @@ static int xen_vbd_create(struct xen_blkif *blkif, blkif_vdev_t handle, if (q && blk_queue_secdiscard(q)) vbd->discard_secure = true; - DPRINTK("Successful creation of handle=%04x (dom=%u)\n", + pr_debug("Successful creation of handle=%04x (dom=%u)\n", handle, blkif->domid); return 0; } @@ -460,7 +462,7 @@ static int xen_blkbk_remove(struct xenbus_device *dev) { struct backend_info *be = dev_get_drvdata(&dev->dev); - DPRINTK(""); + pr_debug("%s %p %d\n", __func__, dev, dev->otherend_id); if (be->major || be->minor) xenvbd_sysfs_delif(dev); @@ -566,6 +568,10 @@ static int xen_blkbk_probe(struct xenbus_device *dev, int err; struct backend_info *be = kzalloc(sizeof(struct backend_info), GFP_KERNEL); + + /* match the pr_debug in xen_blkbk_remove */ + pr_debug("%s %p %d\n", __func__, dev, dev->otherend_id); + if (!be) { xenbus_dev_fatal(dev, -ENOMEM, "allocating backend structure"); @@ -597,7 +603,7 @@ static int xen_blkbk_probe(struct xenbus_device *dev, return 0; fail: - DPRINTK("failed"); + pr_warn("%s failed\n", __func__); xen_blkbk_remove(dev); return err; } @@ -621,7 +627,7 @@ static void backend_changed(struct xenbus_watch *watch, unsigned long handle; char *device_type; - DPRINTK(""); + pr_debug("%s %p %d\n", __func__, dev, dev->otherend_id); err = xenbus_scanf(XBT_NIL, dev->nodename, "physical-device", "%x:%x", &major, &minor); @@ -640,7 +646,7 @@ static void backend_changed(struct xenbus_watch *watch, if (be->major | be->minor) { if (be->major != major || be->minor != minor) - pr_warn(DRV_PFX "changing physical device (from %x:%x to %x:%x) not supported.\n", + pr_warn("changing physical device (from %x:%x to %x:%x) not supported.\n", be->major, be->minor, major, minor); return; } @@ -701,13 +707,12 @@ static void frontend_changed(struct xenbus_device *dev, struct backend_info *be = dev_get_drvdata(&dev->dev); int err; - DPRINTK("%s", xenbus_strstate(frontend_state)); + pr_debug("%s %p %s\n", __func__, dev, xenbus_strstate(frontend_state)); switch (frontend_state) { case XenbusStateInitialising: if (dev->state == XenbusStateClosed) { - pr_info(DRV_PFX "%s: prepare for reconnect\n", - dev->nodename); + pr_info("%s: prepare for reconnect\n", dev->nodename); xenbus_switch_state(dev, XenbusStateInitWait); } break; @@ -774,7 +779,7 @@ static void connect(struct backend_info *be) int err; struct xenbus_device *dev = be->dev; - DPRINTK("%s", dev->otherend); + pr_debug("%s %s\n", __func__, dev->otherend); /* Supply the information about the device the frontend needs */ again: @@ -860,7 +865,7 @@ static int connect_ring(struct backend_info *be) char protocol[64] = ""; int err; - DPRINTK("%s", dev->otherend); + pr_debug("%s %s\n", __func__, dev->otherend); err = xenbus_gather(XBT_NIL, dev->otherend, "ring-ref", "%lu", &ring_ref, "event-channel", "%u", &evtchn, NULL); @@ -895,7 +900,7 @@ static int connect_ring(struct backend_info *be) be->blkif->vbd.feature_gnt_persistent = pers_grants; be->blkif->vbd.overflow_max_grants = 0; - pr_info(DRV_PFX "ring-ref %ld, event-channel %d, protocol %d (%s) %s\n", + pr_info("ring-ref %ld, event-channel %d, protocol %d (%s) %s\n", ring_ref, evtchn, be->blkif->blk_protocol, protocol, pers_grants ? "persistent grants" : ""); |