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path: root/drivers/block/xen-blkback/blkback.c
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Diffstat (limited to 'drivers/block/xen-blkback/blkback.c')
-rw-r--r--drivers/block/xen-blkback/blkback.c62
1 files changed, 31 insertions, 31 deletions
diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c
index 2a04d341e598..bd2b3bbbb22c 100644
--- a/drivers/block/xen-blkback/blkback.c
+++ b/drivers/block/xen-blkback/blkback.c
@@ -34,6 +34,8 @@
* IN THE SOFTWARE.
*/
+#define pr_fmt(fmt) "xen-blkback: " fmt
+
#include <linux/spinlock.h>
#include <linux/kthread.h>
#include <linux/list.h>
@@ -211,7 +213,7 @@ static int add_persistent_gnt(struct xen_blkif *blkif,
else if (persistent_gnt->gnt > this->gnt)
new = &((*new)->rb_right);
else {
- pr_alert_ratelimited(DRV_PFX " trying to add a gref that's already in the tree\n");
+ pr_alert_ratelimited("trying to add a gref that's already in the tree\n");
return -EINVAL;
}
}
@@ -242,7 +244,7 @@ static struct persistent_gnt *get_persistent_gnt(struct xen_blkif *blkif,
node = node->rb_right;
else {
if(test_bit(PERSISTENT_GNT_ACTIVE, data->flags)) {
- pr_alert_ratelimited(DRV_PFX " requesting a grant already in use\n");
+ pr_alert_ratelimited("requesting a grant already in use\n");
return NULL;
}
set_bit(PERSISTENT_GNT_ACTIVE, data->flags);
@@ -257,7 +259,7 @@ static void put_persistent_gnt(struct xen_blkif *blkif,
struct persistent_gnt *persistent_gnt)
{
if(!test_bit(PERSISTENT_GNT_ACTIVE, persistent_gnt->flags))
- pr_alert_ratelimited(DRV_PFX " freeing a grant already unused");
+ pr_alert_ratelimited("freeing a grant already unused\n");
set_bit(PERSISTENT_GNT_WAS_ACTIVE, persistent_gnt->flags);
clear_bit(PERSISTENT_GNT_ACTIVE, persistent_gnt->flags);
atomic_dec(&blkif->persistent_gnt_in_use);
@@ -374,7 +376,7 @@ static void purge_persistent_gnt(struct xen_blkif *blkif)
}
if (work_pending(&blkif->persistent_purge_work)) {
- pr_alert_ratelimited(DRV_PFX "Scheduled work from previous purge is still pending, cannot purge list\n");
+ pr_alert_ratelimited("Scheduled work from previous purge is still pending, cannot purge list\n");
return;
}
@@ -396,7 +398,7 @@ static void purge_persistent_gnt(struct xen_blkif *blkif)
total = num_clean;
- pr_debug(DRV_PFX "Going to purge %u persistent grants\n", num_clean);
+ pr_debug("Going to purge %u persistent grants\n", num_clean);
BUG_ON(!list_empty(&blkif->persistent_purge_list));
root = &blkif->persistent_gnts;
@@ -428,13 +430,13 @@ purge_list:
* with the requested num
*/
if (!scan_used && !clean_used) {
- pr_debug(DRV_PFX "Still missing %u purged frames\n", num_clean);
+ pr_debug("Still missing %u purged frames\n", num_clean);
scan_used = true;
goto purge_list;
}
finished:
if (!clean_used) {
- pr_debug(DRV_PFX "Finished scanning for grants to clean, removing used flag\n");
+ pr_debug("Finished scanning for grants to clean, removing used flag\n");
clean_used = true;
goto purge_list;
}
@@ -444,7 +446,7 @@ finished:
/* We can defer this work */
schedule_work(&blkif->persistent_purge_work);
- pr_debug(DRV_PFX "Purged %u/%u\n", (total - num_clean), total);
+ pr_debug("Purged %u/%u\n", (total - num_clean), total);
return;
}
@@ -520,20 +522,20 @@ static void xen_vbd_resize(struct xen_blkif *blkif)
struct xenbus_device *dev = xen_blkbk_xenbus(blkif->be);
unsigned long long new_size = vbd_sz(vbd);
- pr_info(DRV_PFX "VBD Resize: Domid: %d, Device: (%d, %d)\n",
+ pr_info("VBD Resize: Domid: %d, Device: (%d, %d)\n",
blkif->domid, MAJOR(vbd->pdevice), MINOR(vbd->pdevice));
- pr_info(DRV_PFX "VBD Resize: new size %llu\n", new_size);
+ pr_info("VBD Resize: new size %llu\n", new_size);
vbd->size = new_size;
again:
err = xenbus_transaction_start(&xbt);
if (err) {
- pr_warn(DRV_PFX "Error starting transaction");
+ pr_warn("Error starting transaction\n");
return;
}
err = xenbus_printf(xbt, dev->nodename, "sectors", "%llu",
(unsigned long long)vbd_sz(vbd));
if (err) {
- pr_warn(DRV_PFX "Error writing new size");
+ pr_warn("Error writing new size\n");
goto abort;
}
/*
@@ -543,7 +545,7 @@ again:
*/
err = xenbus_printf(xbt, dev->nodename, "state", "%d", dev->state);
if (err) {
- pr_warn(DRV_PFX "Error writing the state");
+ pr_warn("Error writing the state\n");
goto abort;
}
@@ -551,7 +553,7 @@ again:
if (err == -EAGAIN)
goto again;
if (err)
- pr_warn(DRV_PFX "Error ending transaction");
+ pr_warn("Error ending transaction\n");
return;
abort:
xenbus_transaction_end(xbt, 1);
@@ -578,7 +580,7 @@ irqreturn_t xen_blkif_be_int(int irq, void *dev_id)
static void print_stats(struct xen_blkif *blkif)
{
- pr_info("xen-blkback (%s): oo %3llu | rd %4llu | wr %4llu | f %4llu"
+ pr_info("(%s): oo %3llu | rd %4llu | wr %4llu | f %4llu"
" | ds %4llu | pg: %4u/%4d\n",
current->comm, blkif->st_oo_req,
blkif->st_rd_req, blkif->st_wr_req,
@@ -855,7 +857,7 @@ again:
/* This is a newly mapped grant */
BUG_ON(new_map_idx >= segs_to_map);
if (unlikely(map[new_map_idx].status != 0)) {
- pr_debug(DRV_PFX "invalid buffer -- could not remap it\n");
+ pr_debug("invalid buffer -- could not remap it\n");
put_free_pages(blkif, &pages[seg_idx]->page, 1);
pages[seg_idx]->handle = BLKBACK_INVALID_HANDLE;
ret |= 1;
@@ -891,14 +893,14 @@ again:
goto next;
}
pages[seg_idx]->persistent_gnt = persistent_gnt;
- pr_debug(DRV_PFX " grant %u added to the tree of persistent grants, using %u/%u\n",
+ pr_debug("grant %u added to the tree of persistent grants, using %u/%u\n",
persistent_gnt->gnt, blkif->persistent_gnt_c,
xen_blkif_max_pgrants);
goto next;
}
if (use_persistent_gnts && !blkif->vbd.overflow_max_grants) {
blkif->vbd.overflow_max_grants = 1;
- pr_debug(DRV_PFX " domain %u, device %#x is using maximum number of persistent grants\n",
+ pr_debug("domain %u, device %#x is using maximum number of persistent grants\n",
blkif->domid, blkif->vbd.handle);
}
/*
@@ -916,7 +918,7 @@ next:
return ret;
out_of_memory:
- pr_alert(DRV_PFX "%s: out of memory\n", __func__);
+ pr_alert("%s: out of memory\n", __func__);
put_free_pages(blkif, pages_to_gnt, segs_to_map);
return -ENOMEM;
}
@@ -996,7 +998,7 @@ static int dispatch_discard_io(struct xen_blkif *blkif,
err = xen_vbd_translate(&preq, blkif, WRITE);
if (err) {
- pr_warn(DRV_PFX "access denied: DISCARD [%llu->%llu] on dev=%04x\n",
+ pr_warn("access denied: DISCARD [%llu->%llu] on dev=%04x\n",
preq.sector_number,
preq.sector_number + preq.nr_sects, blkif->vbd.pdevice);
goto fail_response;
@@ -1012,7 +1014,7 @@ static int dispatch_discard_io(struct xen_blkif *blkif,
GFP_KERNEL, secure);
fail_response:
if (err == -EOPNOTSUPP) {
- pr_debug(DRV_PFX "discard op failed, not supported\n");
+ pr_debug("discard op failed, not supported\n");
status = BLKIF_RSP_EOPNOTSUPP;
} else if (err)
status = BLKIF_RSP_ERROR;
@@ -1056,16 +1058,16 @@ 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(DRV_PFX "flush diskcache op failed, not supported\n");
+ pr_debug("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 ((pending_req->operation == BLKIF_OP_WRITE_BARRIER) &&
(error == -EOPNOTSUPP)) {
- pr_debug(DRV_PFX "write barrier op failed, not supported\n");
+ pr_debug("write barrier op failed, not supported\n");
xen_blkbk_barrier(XBT_NIL, pending_req->blkif->be, 0);
pending_req->status = BLKIF_RSP_EOPNOTSUPP;
} else if (error) {
- pr_debug(DRV_PFX "Buffer not up-to-date at end of operation,"
+ pr_debug("Buffer not up-to-date at end of operation,"
" error=%d\n", error);
pending_req->status = BLKIF_RSP_ERROR;
}
@@ -1110,7 +1112,7 @@ __do_block_io_op(struct xen_blkif *blkif)
if (RING_REQUEST_PROD_OVERFLOW(&blk_rings->common, rp)) {
rc = blk_rings->common.rsp_prod_pvt;
- pr_warn(DRV_PFX "Frontend provided bogus ring requests (%d - %d = %d). Halting ring processing on dev=%04x\n",
+ pr_warn("Frontend provided bogus ring requests (%d - %d = %d). Halting ring processing on dev=%04x\n",
rp, rc, rp - rc, blkif->vbd.pdevice);
return -EACCES;
}
@@ -1217,8 +1219,7 @@ static int dispatch_rw_block_io(struct xen_blkif *blkif,
if ((req->operation == BLKIF_OP_INDIRECT) &&
(req_operation != BLKIF_OP_READ) &&
(req_operation != BLKIF_OP_WRITE)) {
- pr_debug(DRV_PFX "Invalid indirect operation (%u)\n",
- req_operation);
+ pr_debug("Invalid indirect operation (%u)\n", req_operation);
goto fail_response;
}
@@ -1252,8 +1253,7 @@ static int dispatch_rw_block_io(struct xen_blkif *blkif,
(nseg > BLKIF_MAX_SEGMENTS_PER_REQUEST)) ||
unlikely((req->operation == BLKIF_OP_INDIRECT) &&
(nseg > MAX_INDIRECT_SEGMENTS))) {
- pr_debug(DRV_PFX "Bad number of segments in request (%d)\n",
- nseg);
+ pr_debug("Bad number of segments in request (%d)\n", nseg);
/* Haven't submitted any bio's yet. */
goto fail_response;
}
@@ -1288,7 +1288,7 @@ static int dispatch_rw_block_io(struct xen_blkif *blkif,
}
if (xen_vbd_translate(&preq, blkif, operation) != 0) {
- pr_debug(DRV_PFX "access denied: %s of [%llu,%llu] on dev=%04x\n",
+ pr_debug("access denied: %s of [%llu,%llu] on dev=%04x\n",
operation == READ ? "read" : "write",
preq.sector_number,
preq.sector_number + preq.nr_sects,
@@ -1303,7 +1303,7 @@ static int dispatch_rw_block_io(struct xen_blkif *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(DRV_PFX "Misaligned I/O request from domain %d",
+ pr_debug("Misaligned I/O request from domain %d\n",
blkif->domid);
goto fail_response;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-04 21:07:30 +0300