scsi: Implement sg_printk()
Update the sg driver to use dev_printk() variants instead of
plain printk(); this will prefix logging messages with the
appropriate device.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Acked-by: Doug Gilbert <dgilbert@interlog.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 1de183d..7a291f5 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -200,11 +200,11 @@
static int sg_common_write(Sg_fd * sfp, Sg_request * srp,
unsigned char *cmnd, int timeout, int blocking);
static int sg_read_oxfer(Sg_request * srp, char __user *outp, int num_read_xfer);
-static void sg_remove_scat(Sg_scatter_hold * schp);
+static void sg_remove_scat(Sg_fd * sfp, Sg_scatter_hold * schp);
static void sg_build_reserve(Sg_fd * sfp, int req_size);
static void sg_link_reserve(Sg_fd * sfp, Sg_request * srp, int size);
static void sg_unlink_reserve(Sg_fd * sfp, Sg_request * srp);
-static Sg_fd *sg_add_sfp(Sg_device * sdp, int dev);
+static Sg_fd *sg_add_sfp(Sg_device * sdp);
static void sg_remove_sfp(struct kref *);
static Sg_request *sg_get_rq_mark(Sg_fd * sfp, int pack_id);
static Sg_request *sg_add_request(Sg_fd * sfp);
@@ -218,6 +218,10 @@
#define SZ_SG_IOVEC sizeof(sg_iovec_t)
#define SZ_SG_REQ_INFO sizeof(sg_req_info_t)
+#define sg_printk(prefix, sdp, fmt, a...) \
+ sdev_printk(prefix, (sdp)->device, "[%s] " fmt, \
+ (sdp)->disk->disk_name, ##a)
+
static int sg_allow_access(struct file *filp, unsigned char *cmd)
{
struct sg_fd *sfp = filp->private_data;
@@ -276,13 +280,15 @@
int retval;
nonseekable_open(inode, filp);
- SCSI_LOG_TIMEOUT(3, printk("sg_open: dev=%d, flags=0x%x\n", dev, flags));
if ((flags & O_EXCL) && (O_RDONLY == (flags & O_ACCMODE)))
return -EPERM; /* Can't lock it with read only access */
sdp = sg_get_dev(dev);
if (IS_ERR(sdp))
return PTR_ERR(sdp);
+ SCSI_LOG_TIMEOUT(3, sg_printk(KERN_INFO, sdp,
+ "sg_open: flags=0x%x\n", flags));
+
/* This driver's module count bumped by fops_get in <linux/fs.h> */
/* Prevent the device driver from vanishing while we sleep */
retval = scsi_device_get(sdp->device);
@@ -331,7 +337,7 @@
q = sdp->device->request_queue;
sdp->sg_tablesize = queue_max_segments(q);
}
- sfp = sg_add_sfp(sdp, dev);
+ sfp = sg_add_sfp(sdp);
if (IS_ERR(sfp)) {
retval = PTR_ERR(sfp);
goto out_undo;
@@ -370,7 +376,7 @@
if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp)))
return -ENXIO;
- SCSI_LOG_TIMEOUT(3, printk("sg_release: %s\n", sdp->disk->disk_name));
+ SCSI_LOG_TIMEOUT(3, sg_printk(KERN_INFO, sdp, "sg_release\n"));
mutex_lock(&sdp->open_rel_lock);
scsi_autopm_put_device(sdp->device);
@@ -402,8 +408,8 @@
if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp)))
return -ENXIO;
- SCSI_LOG_TIMEOUT(3, printk("sg_read: %s, count=%d\n",
- sdp->disk->disk_name, (int) count));
+ SCSI_LOG_TIMEOUT(3, sg_printk(KERN_INFO, sdp,
+ "sg_read: count=%d\n", (int) count));
if (!access_ok(VERIFY_WRITE, buf, count))
return -EFAULT;
@@ -588,8 +594,8 @@
if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp)))
return -ENXIO;
- SCSI_LOG_TIMEOUT(3, printk("sg_write: %s, count=%d\n",
- sdp->disk->disk_name, (int) count));
+ SCSI_LOG_TIMEOUT(3, sg_printk(KERN_INFO, sdp,
+ "sg_write: count=%d\n", (int) count));
if (atomic_read(&sdp->detaching))
return -ENODEV;
if (!((filp->f_flags & O_NONBLOCK) ||
@@ -610,7 +616,8 @@
return -EIO; /* The minimum scsi command length is 6 bytes. */
if (!(srp = sg_add_request(sfp))) {
- SCSI_LOG_TIMEOUT(1, printk("sg_write: queue full\n"));
+ SCSI_LOG_TIMEOUT(1, sg_printk(KERN_INFO, sdp,
+ "sg_write: queue full\n"));
return -EDOM;
}
buf += SZ_SG_HEADER;
@@ -623,7 +630,7 @@
if ((opcode >= 0xc0) && old_hdr.twelve_byte)
cmd_size = 12;
}
- SCSI_LOG_TIMEOUT(4, printk(
+ SCSI_LOG_TIMEOUT(4, sg_printk(KERN_INFO, sdp,
"sg_write: scsi opcode=0x%02x, cmd_size=%d\n", (int) opcode, cmd_size));
/* Determine buffer size. */
input_size = count - cmd_size;
@@ -698,7 +705,8 @@
sfp->cmd_q = 1; /* when sg_io_hdr seen, set command queuing on */
if (!(srp = sg_add_request(sfp))) {
- SCSI_LOG_TIMEOUT(1, printk("sg_new_write: queue full\n"));
+ SCSI_LOG_TIMEOUT(1, sg_printk(KERN_INFO, sfp->parentdp,
+ "sg_new_write: queue full\n"));
return -EDOM;
}
srp->sg_io_owned = sg_io_owned;
@@ -767,12 +775,14 @@
hp->host_status = 0;
hp->driver_status = 0;
hp->resid = 0;
- SCSI_LOG_TIMEOUT(4, printk("sg_common_write: scsi opcode=0x%02x, cmd_size=%d\n",
- (int) cmnd[0], (int) hp->cmd_len));
+ SCSI_LOG_TIMEOUT(4, sg_printk(KERN_INFO, sfp->parentdp,
+ "sg_common_write: scsi opcode=0x%02x, cmd_size=%d\n",
+ (int) cmnd[0], (int) hp->cmd_len));
k = sg_start_req(srp, cmnd);
if (k) {
- SCSI_LOG_TIMEOUT(1, printk("sg_common_write: start_req err=%d\n", k));
+ SCSI_LOG_TIMEOUT(1, sg_printk(KERN_INFO, sfp->parentdp,
+ "sg_common_write: start_req err=%d\n", k));
sg_finish_rem_req(srp);
return k; /* probably out of space --> ENOMEM */
}
@@ -846,8 +856,8 @@
if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp)))
return -ENXIO;
- SCSI_LOG_TIMEOUT(3, printk("sg_ioctl: %s, cmd=0x%x\n",
- sdp->disk->disk_name, (int) cmd_in));
+ SCSI_LOG_TIMEOUT(3, sg_printk(KERN_INFO, sdp,
+ "sg_ioctl: cmd=0x%x\n", (int) cmd_in));
read_only = (O_RDWR != (filp->f_flags & O_ACCMODE));
switch (cmd_in) {
@@ -899,7 +909,7 @@
sfp->low_dma = 1;
if ((0 == sfp->low_dma) && (0 == sg_res_in_use(sfp))) {
val = (int) sfp->reserve.bufflen;
- sg_remove_scat(&sfp->reserve);
+ sg_remove_scat(sfp, &sfp->reserve);
sg_build_reserve(sfp, val);
}
} else {
@@ -975,7 +985,7 @@
if (val != sfp->reserve.bufflen) {
if (sg_res_in_use(sfp) || sfp->mmap_called)
return -EBUSY;
- sg_remove_scat(&sfp->reserve);
+ sg_remove_scat(sfp, &sfp->reserve);
sg_build_reserve(sfp, val);
}
return 0;
@@ -1198,8 +1208,8 @@
res |= POLLOUT | POLLWRNORM;
} else if (count < SG_MAX_QUEUE)
res |= POLLOUT | POLLWRNORM;
- SCSI_LOG_TIMEOUT(3, printk("sg_poll: %s, res=0x%x\n",
- sdp->disk->disk_name, (int) res));
+ SCSI_LOG_TIMEOUT(3, sg_printk(KERN_INFO, sdp,
+ "sg_poll: res=0x%x\n", (int) res));
return res;
}
@@ -1211,8 +1221,8 @@
if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp)))
return -ENXIO;
- SCSI_LOG_TIMEOUT(3, printk("sg_fasync: %s, mode=%d\n",
- sdp->disk->disk_name, mode));
+ SCSI_LOG_TIMEOUT(3, sg_printk(KERN_INFO, sdp,
+ "sg_fasync: mode=%d\n", mode));
return fasync_helper(fd, filp, mode, &sfp->async_qp);
}
@@ -1231,8 +1241,9 @@
offset = vmf->pgoff << PAGE_SHIFT;
if (offset >= rsv_schp->bufflen)
return VM_FAULT_SIGBUS;
- SCSI_LOG_TIMEOUT(3, printk("sg_vma_fault: offset=%lu, scatg=%d\n",
- offset, rsv_schp->k_use_sg));
+ SCSI_LOG_TIMEOUT(3, sg_printk(KERN_INFO, sfp->parentdp,
+ "sg_vma_fault: offset=%lu, scatg=%d\n",
+ offset, rsv_schp->k_use_sg));
sa = vma->vm_start;
length = 1 << (PAGE_SHIFT + rsv_schp->page_order);
for (k = 0; k < rsv_schp->k_use_sg && sa < vma->vm_end; k++) {
@@ -1267,8 +1278,9 @@
if ((!filp) || (!vma) || (!(sfp = (Sg_fd *) filp->private_data)))
return -ENXIO;
req_sz = vma->vm_end - vma->vm_start;
- SCSI_LOG_TIMEOUT(3, printk("sg_mmap starting, vm_start=%p, len=%d\n",
- (void *) vma->vm_start, (int) req_sz));
+ SCSI_LOG_TIMEOUT(3, sg_printk(KERN_INFO, sfp->parentdp,
+ "sg_mmap starting, vm_start=%p, len=%d\n",
+ (void *) vma->vm_start, (int) req_sz));
if (vma->vm_pgoff)
return -EINVAL; /* want no offset */
rsv_schp = &sfp->reserve;
@@ -1330,8 +1342,9 @@
result = rq->errors;
resid = rq->resid_len;
- SCSI_LOG_TIMEOUT(4, printk("sg_cmd_done: %s, pack_id=%d, res=0x%x\n",
- sdp->disk->disk_name, srp->header.pack_id, result));
+ SCSI_LOG_TIMEOUT(4, sg_printk(KERN_INFO, sdp,
+ "sg_cmd_done: pack_id=%d, res=0x%x\n",
+ srp->header.pack_id, result));
srp->header.resid = resid;
ms = jiffies_to_msecs(jiffies);
srp->header.duration = (ms > srp->header.duration) ?
@@ -1441,7 +1454,8 @@
}
k = error;
- SCSI_LOG_TIMEOUT(3, printk("sg_alloc: dev=%d \n", k));
+ SCSI_LOG_TIMEOUT(3, sdev_printk(KERN_INFO, scsidp,
+ "sg_alloc: dev=%d \n", k));
sprintf(disk->disk_name, "sg%d", k);
disk->first_minor = k;
sdp->disk = disk;
@@ -1561,8 +1575,7 @@
write_unlock_irqrestore(&sg_index_lock, flags);
SCSI_LOG_TIMEOUT(3,
- printk("sg_device_destroy: %s\n",
- sdp->disk->disk_name));
+ sg_printk(KERN_INFO, sdp, "sg_device_destroy\n"));
put_disk(sdp->disk);
kfree(sdp);
@@ -1584,8 +1597,8 @@
if (val > 1)
return; /* only want to do following once per device */
- SCSI_LOG_TIMEOUT(3, printk("%s: %s\n", __func__,
- sdp->disk->disk_name));
+ SCSI_LOG_TIMEOUT(3, sg_printk(KERN_INFO, sdp,
+ "%s\n", __func__));
read_lock_irqsave(&sdp->sfd_lock, iflags);
list_for_each_entry(sfp, &sdp->sfds, sfd_siblings) {
@@ -1687,8 +1700,9 @@
int rw = hp->dxfer_direction == SG_DXFER_TO_DEV ? WRITE : READ;
unsigned char *long_cmdp = NULL;
- SCSI_LOG_TIMEOUT(4, printk(KERN_INFO "sg_start_req: dxfer_len=%d\n",
- dxfer_len));
+ SCSI_LOG_TIMEOUT(4, sg_printk(KERN_INFO, sfp->parentdp,
+ "sg_start_req: dxfer_len=%d\n",
+ dxfer_len));
if (hp->cmd_len > BLK_MAX_CDB) {
long_cmdp = kzalloc(hp->cmd_len, GFP_KERNEL);
@@ -1786,7 +1800,9 @@
Sg_fd *sfp = srp->parentfp;
Sg_scatter_hold *req_schp = &srp->data;
- SCSI_LOG_TIMEOUT(4, printk("sg_finish_rem_req: res_used=%d\n", (int) srp->res_used));
+ SCSI_LOG_TIMEOUT(4, sg_printk(KERN_INFO, sfp->parentdp,
+ "sg_finish_rem_req: res_used=%d\n",
+ (int) srp->res_used));
if (srp->rq) {
if (srp->bio)
ret = blk_rq_unmap_user(srp->bio);
@@ -1799,7 +1815,7 @@
if (srp->res_used)
sg_unlink_reserve(sfp, srp);
else
- sg_remove_scat(req_schp);
+ sg_remove_scat(sfp, req_schp);
sg_remove_request(sfp, srp);
@@ -1833,8 +1849,9 @@
++blk_size; /* don't know why */
/* round request up to next highest SG_SECTOR_SZ byte boundary */
blk_size = ALIGN(blk_size, SG_SECTOR_SZ);
- SCSI_LOG_TIMEOUT(4, printk("sg_build_indirect: buff_size=%d, blk_size=%d\n",
- buff_size, blk_size));
+ SCSI_LOG_TIMEOUT(4, sg_printk(KERN_INFO, sfp->parentdp,
+ "sg_build_indirect: buff_size=%d, blk_size=%d\n",
+ buff_size, blk_size));
/* N.B. ret_sz carried into this block ... */
mx_sc_elems = sg_build_sgat(schp, sfp, sg_tablesize);
@@ -1877,14 +1894,16 @@
}
}
- SCSI_LOG_TIMEOUT(5, printk("sg_build_indirect: k=%d, num=%d, "
- "ret_sz=%d\n", k, num, ret_sz));
+ SCSI_LOG_TIMEOUT(5, sg_printk(KERN_INFO, sfp->parentdp,
+ "sg_build_indirect: k=%d, num=%d, ret_sz=%d\n",
+ k, num, ret_sz));
} /* end of for loop */
schp->page_order = order;
schp->k_use_sg = k;
- SCSI_LOG_TIMEOUT(5, printk("sg_build_indirect: k_use_sg=%d, "
- "rem_sz=%d\n", k, rem_sz));
+ SCSI_LOG_TIMEOUT(5, sg_printk(KERN_INFO, sfp->parentdp,
+ "sg_build_indirect: k_use_sg=%d, rem_sz=%d\n",
+ k, rem_sz));
schp->bufflen = blk_size;
if (rem_sz > 0) /* must have failed */
@@ -1901,17 +1920,19 @@
}
static void
-sg_remove_scat(Sg_scatter_hold * schp)
+sg_remove_scat(Sg_fd * sfp, Sg_scatter_hold * schp)
{
- SCSI_LOG_TIMEOUT(4, printk("sg_remove_scat: k_use_sg=%d\n", schp->k_use_sg));
+ SCSI_LOG_TIMEOUT(4, sg_printk(KERN_INFO, sfp->parentdp,
+ "sg_remove_scat: k_use_sg=%d\n", schp->k_use_sg));
if (schp->pages && schp->sglist_len > 0) {
if (!schp->dio_in_use) {
int k;
for (k = 0; k < schp->k_use_sg && schp->pages[k]; k++) {
- SCSI_LOG_TIMEOUT(5, printk(
- "sg_remove_scat: k=%d, pg=0x%p\n",
- k, schp->pages[k]));
+ SCSI_LOG_TIMEOUT(5,
+ sg_printk(KERN_INFO, sfp->parentdp,
+ "sg_remove_scat: k=%d, pg=0x%p\n",
+ k, schp->pages[k]));
__free_pages(schp->pages[k], schp->page_order);
}
@@ -1927,8 +1948,9 @@
Sg_scatter_hold *schp = &srp->data;
int k, num;
- SCSI_LOG_TIMEOUT(4, printk("sg_read_oxfer: num_read_xfer=%d\n",
- num_read_xfer));
+ SCSI_LOG_TIMEOUT(4, sg_printk(KERN_INFO, srp->parentfp->parentdp,
+ "sg_read_oxfer: num_read_xfer=%d\n",
+ num_read_xfer));
if ((!outp) || (num_read_xfer <= 0))
return 0;
@@ -1958,14 +1980,15 @@
{
Sg_scatter_hold *schp = &sfp->reserve;
- SCSI_LOG_TIMEOUT(4, printk("sg_build_reserve: req_size=%d\n", req_size));
+ SCSI_LOG_TIMEOUT(4, sg_printk(KERN_INFO, sfp->parentdp,
+ "sg_build_reserve: req_size=%d\n", req_size));
do {
if (req_size < PAGE_SIZE)
req_size = PAGE_SIZE;
if (0 == sg_build_indirect(schp, sfp, req_size))
return;
else
- sg_remove_scat(schp);
+ sg_remove_scat(sfp, schp);
req_size >>= 1; /* divide by 2 */
} while (req_size > (PAGE_SIZE / 2));
}
@@ -1978,7 +2001,8 @@
int k, num, rem;
srp->res_used = 1;
- SCSI_LOG_TIMEOUT(4, printk("sg_link_reserve: size=%d\n", size));
+ SCSI_LOG_TIMEOUT(4, sg_printk(KERN_INFO, sfp->parentdp,
+ "sg_link_reserve: size=%d\n", size));
rem = size;
num = 1 << (PAGE_SHIFT + rsv_schp->page_order);
@@ -1996,7 +2020,8 @@
}
if (k >= rsv_schp->k_use_sg)
- SCSI_LOG_TIMEOUT(1, printk("sg_link_reserve: BAD size\n"));
+ SCSI_LOG_TIMEOUT(1, sg_printk(KERN_INFO, sfp->parentdp,
+ "sg_link_reserve: BAD size\n"));
}
static void
@@ -2004,8 +2029,9 @@
{
Sg_scatter_hold *req_schp = &srp->data;
- SCSI_LOG_TIMEOUT(4, printk("sg_unlink_reserve: req->k_use_sg=%d\n",
- (int) req_schp->k_use_sg));
+ SCSI_LOG_TIMEOUT(4, sg_printk(KERN_INFO, srp->parentfp->parentdp,
+ "sg_unlink_reserve: req->k_use_sg=%d\n",
+ (int) req_schp->k_use_sg));
req_schp->k_use_sg = 0;
req_schp->bufflen = 0;
req_schp->pages = NULL;
@@ -2110,7 +2136,7 @@
}
static Sg_fd *
-sg_add_sfp(Sg_device * sdp, int dev)
+sg_add_sfp(Sg_device * sdp)
{
Sg_fd *sfp;
unsigned long iflags;
@@ -2139,15 +2165,18 @@
}
list_add_tail(&sfp->sfd_siblings, &sdp->sfds);
write_unlock_irqrestore(&sdp->sfd_lock, iflags);
- SCSI_LOG_TIMEOUT(3, printk("sg_add_sfp: sfp=0x%p\n", sfp));
+ SCSI_LOG_TIMEOUT(3, sg_printk(KERN_INFO, sdp,
+ "sg_add_sfp: sfp=0x%p\n", sfp));
if (unlikely(sg_big_buff != def_reserved_size))
sg_big_buff = def_reserved_size;
bufflen = min_t(int, sg_big_buff,
max_sectors_bytes(sdp->device->request_queue));
sg_build_reserve(sfp, bufflen);
- SCSI_LOG_TIMEOUT(3, printk("sg_add_sfp: bufflen=%d, k_use_sg=%d\n",
- sfp->reserve.bufflen, sfp->reserve.k_use_sg));
+ SCSI_LOG_TIMEOUT(3, sg_printk(KERN_INFO, sdp,
+ "sg_add_sfp: bufflen=%d, k_use_sg=%d\n",
+ sfp->reserve.bufflen,
+ sfp->reserve.k_use_sg));
kref_get(&sdp->d_ref);
__module_get(THIS_MODULE);
@@ -2165,17 +2194,15 @@
sg_finish_rem_req(sfp->headrp);
if (sfp->reserve.bufflen > 0) {
- SCSI_LOG_TIMEOUT(6,
- printk("sg_remove_sfp: bufflen=%d, k_use_sg=%d\n",
+ SCSI_LOG_TIMEOUT(6, sg_printk(KERN_INFO, sdp,
+ "sg_remove_sfp: bufflen=%d, k_use_sg=%d\n",
(int) sfp->reserve.bufflen,
(int) sfp->reserve.k_use_sg));
- sg_remove_scat(&sfp->reserve);
+ sg_remove_scat(sfp, &sfp->reserve);
}
- SCSI_LOG_TIMEOUT(6,
- printk("sg_remove_sfp: %s, sfp=0x%p\n",
- sdp->disk->disk_name,
- sfp));
+ SCSI_LOG_TIMEOUT(6, sg_printk(KERN_INFO, sdp,
+ "sg_remove_sfp: sfp=0x%p\n", sfp));
kfree(sfp);
scsi_device_put(sdp->device);