xen/blkback: Use the DRV_PFX in the pr_.. macros.

To make it easier to read.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c
index 5c9568e..09fe528 100644 (file)
--- a/drivers/block/xen-blkback/blkback.c
+++ b/drivers/block/xen-blkback/blkback.c
@@ -196,20 +196,20 @@ static void vbd_resize(struct blkif_st *blkif)
        struct xenbus_device *dev = xen_blkbk_xenbus(blkif->be);
        unsigned long long new_size = vbd_sz(vbd);
 
-       pr_info("xen-blkback: VBD Resize: Domid: %d, Device: (%d, %d)\n",
+       pr_info(DRV_PFX "VBD Resize: Domid: %d, Device: (%d, %d)\n",
                blkif->domid, MAJOR(vbd->pdevice), MINOR(vbd->pdevice));
-       pr_info("xen-blkback: VBD Resize: new size %llu\n", new_size);
+       pr_info(DRV_PFX "VBD Resize: new size %llu\n", new_size);
        vbd->size = new_size;
 again:
        err = xenbus_transaction_start(&xbt);
        if (err) {
-               pr_warn("xen-blkback: Error starting transaction");
+               pr_warn(DRV_PFX "Error starting transaction");
                return;
        }
        err = xenbus_printf(xbt, dev->nodename, "sectors", "%llu",
                            (unsigned long long)vbd_sz(vbd));
        if (err) {
-               pr_warn("xen-blkback: Error writing new size");
+               pr_warn(DRV_PFX "Error writing new size");
                goto abort;
        }
        /*
@@ -219,7 +219,7 @@ again:
         */
        err = xenbus_printf(xbt, dev->nodename, "state", "%d", dev->state);
        if (err) {
-               pr_warn("xen-blkback: Error writing the state");
+               pr_warn(DRV_PFX "Error writing the state");
                goto abort;
        }
 
@@ -227,7 +227,7 @@ again:
        if (err == -EAGAIN)
                goto again;
        if (err)
-               pr_warn("xen-blkback: Error ending transaction");
+               pr_warn(DRV_PFX "Error ending transaction");
 abort:
        xenbus_transaction_end(xbt, 1);
 }
@@ -270,7 +270,7 @@ int xen_blkif_schedule(void *arg)
        xen_blkif_get(blkif);
 
        if (debug_lvl)
-               pr_debug("xen-blkback: %s: started\n", current->comm);
+               pr_debug(DRV_PFX "%s: started\n", current->comm);
 
        while (!kthread_should_stop()) {
                if (try_to_freeze())
@@ -299,7 +299,7 @@ int xen_blkif_schedule(void *arg)
        if (log_stats)
                print_stats(blkif);
        if (debug_lvl)
-               pr_debug("xen-blkback: %s: exiting\n", current->comm);
+               pr_debug(DRV_PFX "%s: exiting\n", current->comm);
 
        blkif->xenblkd = NULL;
        xen_blkif_put(blkif);
@@ -343,7 +343,7 @@ static void xen_blkbk_unmap(struct pending_req *req)
                ret = m2p_remove_override(
                        virt_to_page(unmap[i].host_addr), false);
                if (ret) {
-                       pr_alert("xen-blkback: Failed to remove M2P override for %lx\n",
+                       pr_alert(DRV_PFX "Failed to remove M2P override for %lx\n",
                                 (unsigned long)unmap[i].host_addr);
                        continue;
                }
@@ -385,7 +385,7 @@ static int xen_blkbk_map(struct blkif_request *req,
         */
        for (i = 0; i < nseg; i++) {
                if (unlikely(map[i].status != 0)) {
-                       pr_debug("xen-blkback: invalid buffer -- could not remap it\n");
+                       pr_debug(DRV_PFX "invalid buffer -- could not remap it\n");
                        map[i].handle = BLKBACK_INVALID_HANDLE;
                        ret |= 1;
                }
@@ -398,7 +398,7 @@ static int xen_blkbk_map(struct blkif_request *req,
                ret = m2p_add_override(PFN_DOWN(map[i].dev_bus_addr),
                        blkbk->pending_page(pending_req, i), false);
                if (ret) {
-                       pr_alert("xen-blkback: Failed to install M2P override for %lx (ret: %d)\n",
+                       pr_alert(DRV_PFX "Failed to install M2P override for %lx (ret: %d)\n",
                                 (unsigned long)map[i].dev_bus_addr, ret);
                        /* We could switch over to GNTTABOP_copy */
                        continue;
@@ -419,11 +419,11 @@ static void __end_block_io_op(struct pending_req *pending_req, int error)
        /* An error fails the entire request. */
        if ((pending_req->operation == BLKIF_OP_FLUSH_DISKCACHE) &&
            (error == -EOPNOTSUPP)) {
-               pr_debug("xen-blkback: flush diskcache op failed, not supported\n");
+               pr_debug(DRV_PFX "flush diskcache op failed, not supported\n");
                xen_blkbk_flush_diskcache(XBT_NIL, pending_req->blkif->be, 0);
                pending_req->status = BLKIF_RSP_EOPNOTSUPP;
        } else if (error) {
-               pr_debug("xen-blkback: Buffer not up-to-date at end of operation,"
+               pr_debug(DRV_PFX "Buffer not up-to-date at end of operation,"
                         " error=%d\n", error);
                pending_req->status = BLKIF_RSP_ERROR;
        }
@@ -561,7 +561,7 @@ static int dispatch_rw_block_io(struct blkif_st *blkif,
        nseg = req->nr_segments;
        if (unlikely(nseg == 0 && operation != WRITE_FLUSH) ||
            unlikely(nseg > BLKIF_MAX_SEGMENTS_PER_REQUEST)) {
-               pr_debug("xen-blkback: Bad number of segments in request (%d)\n",
+               pr_debug(DRV_PFX "Bad number of segments in request (%d)\n",
                         nseg);
                /* Haven't submitted any bio's yet. */
                goto fail_response;
@@ -588,7 +588,7 @@ static int dispatch_rw_block_io(struct blkif_st *blkif,
        }
 
        if (vbd_translate(&preq, blkif, operation) != 0) {
-               pr_debug("xen-blkback: access denied: %s of [%llu,%llu] on dev=%04x\n",
+               pr_debug(DRV_PFX "access denied: %s of [%llu,%llu] on dev=%04x\n",
                         operation == READ ? "read" : "write",
                         preq.sector_number,
                         preq.sector_number + preq.nr_sects, preq.dev);
@@ -602,7 +602,7 @@ static int dispatch_rw_block_io(struct blkif_st *blkif,
        for (i = 0; i < nseg; i++) {
                if (((int)preq.sector_number|(int)seg[i].nsec) &
                    ((bdev_logical_block_size(preq.bdev) >> 9) - 1)) {
-                       pr_debug("xen-blkback: Misaligned I/O request from domain %d",
+                       pr_debug(DRV_PFX "Misaligned I/O request from domain %d",
                                 blkif->domid);
                        goto fail_response;
                }
@@ -759,7 +759,7 @@ static int __init xen_blkif_init(void)
 
        blkbk = kzalloc(sizeof(struct xen_blkbk), GFP_KERNEL);
        if (!blkbk) {
-               pr_alert("xen-blkback: %s: out of memory!\n", __func__);
+               pr_alert(DRV_PFX "%s: out of memory!\n", __func__);
                return -ENOMEM;
        }
 
@@ -807,7 +807,7 @@ static int __init xen_blkif_init(void)
        return 0;
 
  out_of_memory:
-       pr_alert("xen-blkback: %s: out of memory\n", __func__);
+       pr_alert(DRV_PFX "%s: out of memory\n", __func__);
  failed_init:
        kfree(blkbk->pending_reqs);
        kfree(blkbk->pending_grant_handles);

diff --git a/drivers/block/xen-blkback/common.h b/drivers/block/xen-blkback/common.h
index 46e5d06..da96e3e 100644 (file)
--- a/drivers/block/xen-blkback/common.h
+++ b/drivers/block/xen-blkback/common.h
@@ -42,8 +42,9 @@
 #include <xen/grant_table.h>
 #include <xen/xenbus.h>
 
+#define DRV_PFX "xen-blkback:"
 #define DPRINTK(fmt, args...)                          \
-       pr_debug("xen-blkback: (%s:%d) " fmt ".\n",     \
+       pr_debug(DRV_PFX "(%s:%d) " fmt ".\n",  \
                 __func__, __LINE__, ##args)
 
 struct vbd {

diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
index fa01dbb..1c3fa65 100644 (file)
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -504,7 +504,7 @@ static void backend_changed(struct xenbus_watch *watch,
 
        if ((be->major || be->minor) &&
            ((be->major != major) || (be->minor != minor))) {
-               pr_warn("xen-blkback: changing physical device (from %x:%x to %x:%x) not supported.\n",
+               pr_warn(DRV_PFX "changing physical device (from %x:%x to %x:%x) not supported.\n",
                        be->major, be->minor, major, minor);
                return;
        }
@@ -571,7 +571,7 @@ static void frontend_changed(struct xenbus_device *dev,
        switch (frontend_state) {
        case XenbusStateInitialising:
                if (dev->state == XenbusStateClosed) {
-                       pr_info("xen-blkback: %s: prepare for reconnect\n",
+                       pr_info(DRV_PFX "%s: prepare for reconnect\n",
                                dev->nodename);
                        xenbus_switch_state(dev, XenbusStateInitWait);
                }
@@ -726,7 +726,7 @@ static int connect_ring(struct backend_info *be)
                xenbus_dev_fatal(dev, err, "unknown fe protocol %s", protocol);
                return -1;
        }
-       pr_info("xen-blkback: ring-ref %ld, event-channel %d, protocol %d (%s)\n",
+       pr_info(DRV_PFX "ring-ref %ld, event-channel %d, protocol %d (%s)\n",
                ring_ref, evtchn, be->blkif->blk_protocol, protocol);
 
        /* Map the shared frame, irq etc. */