[PATCH v2 13/30] cxlflash: Fix to avoid spamming the kernel log
Matthew R. Ochs
mrochs at linux.vnet.ibm.com
Thu Sep 17 07:30:04 AEST 2015
During run-time the driver can be very chatty and spam the system
kernel log. Various print statements can be limited and/or moved
to development-only mode. Additionally, numerous prints can be
converted to trace the corresponding device.
The following changes were made:
- pr_debug to pr_devel
- pr_debug to pr_debug_ratelimited
- pr_err to dev_err
- pr_debug to dev_dbg
Signed-off-by: Matthew R. Ochs <mrochs at linux.vnet.ibm.com>
Signed-off-by: Manoj N. Kumar <manoj at linux.vnet.ibm.com>
---
drivers/scsi/cxlflash/main.c | 105 ++++++++++++++++++++++++-------------------
1 file changed, 58 insertions(+), 47 deletions(-)
diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
index 919dfb1..600c7f9 100644
--- a/drivers/scsi/cxlflash/main.c
+++ b/drivers/scsi/cxlflash/main.c
@@ -58,8 +58,8 @@ static struct afu_cmd *cmd_checkout(struct afu *afu)
cmd = &afu->cmd[k];
if (!atomic_dec_if_positive(&cmd->free)) {
- pr_debug("%s: returning found index=%d\n",
- __func__, cmd->slot);
+ pr_devel("%s: returning found index=%d cmd=%p\n",
+ __func__, cmd->slot, cmd);
memset(cmd->buf, 0, CMD_BUFSIZE);
memset(cmd->rcb.cdb, 0, sizeof(cmd->rcb.cdb));
return cmd;
@@ -93,7 +93,7 @@ static void cmd_checkin(struct afu_cmd *cmd)
return;
}
- pr_debug("%s: released cmd %p index=%d\n", __func__, cmd, cmd->slot);
+ pr_devel("%s: released cmd %p index=%d\n", __func__, cmd, cmd->slot);
}
/**
@@ -127,7 +127,7 @@ static void process_cmd_err(struct afu_cmd *cmd, struct scsi_cmnd *scp)
}
pr_debug("%s: cmd failed afu_rc=%d scsi_rc=%d fc_rc=%d "
- "afu_extra=0x%X, scsi_entra=0x%X, fc_extra=0x%X\n",
+ "afu_extra=0x%X, scsi_extra=0x%X, fc_extra=0x%X\n",
__func__, ioasa->rc.afu_rc, ioasa->rc.scsi_rc,
ioasa->rc.fc_rc, ioasa->afu_extra, ioasa->scsi_extra,
ioasa->fc_extra);
@@ -240,9 +240,9 @@ static void cmd_complete(struct afu_cmd *cmd)
cmd_is_tmf = cmd->cmd_tmf;
cmd_checkin(cmd); /* Don't use cmd after here */
- pr_debug("%s: calling scsi_set_resid, scp=%p "
- "result=%X resid=%d\n", __func__,
- scp, scp->result, resid);
+ pr_debug_ratelimited("%s: calling scsi_done scp=%p result=%X "
+ "ioasc=%d\n", __func__, scp, scp->result,
+ cmd->sa.ioasc);
scsi_set_resid(scp, resid);
scsi_dma_unmap(scp);
@@ -417,12 +417,13 @@ static int send_tmf(struct afu *afu, struct scsi_cmnd *scp, u64 tmfcmd)
short lflag = 0;
struct Scsi_Host *host = scp->device->host;
struct cxlflash_cfg *cfg = (struct cxlflash_cfg *)host->hostdata;
+ struct device *dev = &cfg->dev->dev;
ulong lock_flags;
int rc = 0;
cmd = cmd_checkout(afu);
if (unlikely(!cmd)) {
- pr_err("%s: could not get a free command\n", __func__);
+ dev_err(dev, "%s: could not get a free command\n", __func__);
rc = SCSI_MLQUEUE_HOST_BUSY;
goto out;
}
@@ -493,7 +494,7 @@ static int cxlflash_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scp)
{
struct cxlflash_cfg *cfg = (struct cxlflash_cfg *)host->hostdata;
struct afu *afu = cfg->afu;
- struct pci_dev *pdev = cfg->dev;
+ struct device *dev = &cfg->dev->dev;
struct afu_cmd *cmd;
u32 port_sel = scp->device->channel + 1;
int nseg, i, ncount;
@@ -502,13 +503,14 @@ static int cxlflash_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scp)
short lflag = 0;
int rc = 0;
- pr_debug("%s: (scp=%p) %d/%d/%d/%llu cdb=(%08X-%08X-%08X-%08X)\n",
- __func__, scp, host->host_no, scp->device->channel,
- scp->device->id, scp->device->lun,
- get_unaligned_be32(&((u32 *)scp->cmnd)[0]),
- get_unaligned_be32(&((u32 *)scp->cmnd)[1]),
- get_unaligned_be32(&((u32 *)scp->cmnd)[2]),
- get_unaligned_be32(&((u32 *)scp->cmnd)[3]));
+ dev_dbg_ratelimited(dev, "%s: (scp=%p) %d/%d/%d/%llu "
+ "cdb=(%08X-%08X-%08X-%08X)\n",
+ __func__, scp, host->host_no, scp->device->channel,
+ scp->device->id, scp->device->lun,
+ get_unaligned_be32(&((u32 *)scp->cmnd)[0]),
+ get_unaligned_be32(&((u32 *)scp->cmnd)[1]),
+ get_unaligned_be32(&((u32 *)scp->cmnd)[2]),
+ get_unaligned_be32(&((u32 *)scp->cmnd)[3]));
/* If a Task Management Function is active, wait for it to complete
* before continuing with regular commands.
@@ -523,13 +525,11 @@ static int cxlflash_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scp)
switch (cfg->state) {
case STATE_RESET:
- dev_dbg_ratelimited(&cfg->dev->dev, "%s: device is in reset!\n",
- __func__);
+ dev_dbg_ratelimited(dev, "%s: device is in reset!\n", __func__);
rc = SCSI_MLQUEUE_HOST_BUSY;
goto out;
case STATE_FAILTERM:
- dev_dbg_ratelimited(&cfg->dev->dev, "%s: device has failed!\n",
- __func__);
+ dev_dbg_ratelimited(dev, "%s: device has failed!\n", __func__);
scp->result = (DID_NO_CONNECT << 16);
scp->scsi_done(scp);
rc = 0;
@@ -540,7 +540,7 @@ static int cxlflash_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scp)
cmd = cmd_checkout(afu);
if (unlikely(!cmd)) {
- pr_err("%s: could not get a free command\n", __func__);
+ dev_err(dev, "%s: could not get a free command\n", __func__);
rc = SCSI_MLQUEUE_HOST_BUSY;
goto out;
}
@@ -562,7 +562,7 @@ static int cxlflash_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scp)
nseg = scsi_dma_map(scp);
if (unlikely(nseg < 0)) {
- dev_err(&pdev->dev, "%s: Fail DMA map! nseg=%d\n",
+ dev_err(dev, "%s: Fail DMA map! nseg=%d\n",
__func__, nseg);
rc = SCSI_MLQUEUE_HOST_BUSY;
goto out;
@@ -585,6 +585,7 @@ static int cxlflash_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scp)
}
out:
+ pr_devel("%s: returning rc=%d\n", __func__, rc);
return rc;
}
@@ -657,9 +658,10 @@ static void term_mc(struct cxlflash_cfg *cfg, enum undo_level level)
{
int rc = 0;
struct afu *afu = cfg->afu;
+ struct device *dev = &cfg->dev->dev;
if (!afu || !cfg->mcctx) {
- pr_err("%s: returning from term_mc with NULL afu or MC\n",
+ dev_err(dev, "%s: returning from term_mc with NULL afu or MC\n",
__func__);
return;
}
@@ -756,6 +758,7 @@ static int alloc_mem(struct cxlflash_cfg *cfg)
int rc = 0;
int i;
char *buf = NULL;
+ struct device *dev = &cfg->dev->dev;
/* This allocation is about 12K, i.e. only 1 64k page
* and upto 4 4k pages
@@ -763,8 +766,8 @@ static int alloc_mem(struct cxlflash_cfg *cfg)
cfg->afu = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
get_order(sizeof(struct afu)));
if (unlikely(!cfg->afu)) {
- pr_err("%s: cannot get %d free pages\n",
- __func__, get_order(sizeof(struct afu)));
+ dev_err(dev, "%s: cannot get %d free pages\n",
+ __func__, get_order(sizeof(struct afu)));
rc = -ENOMEM;
goto out;
}
@@ -775,7 +778,8 @@ static int alloc_mem(struct cxlflash_cfg *cfg)
if (!((u64)buf & (PAGE_SIZE - 1))) {
buf = (void *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
if (unlikely(!buf)) {
- pr_err("%s: Allocate command buffers fail!\n",
+ dev_err(dev,
+ "%s: Allocate command buffers fail!\n",
__func__);
rc = -ENOMEM;
free_mem(cfg);
@@ -1289,6 +1293,7 @@ static irqreturn_t cxlflash_async_err_irq(int irq, void *data)
{
struct afu *afu = (struct afu *)data;
struct cxlflash_cfg *cfg = afu->parent;
+ struct device *dev = &cfg->dev->dev;
u64 reg_unmasked;
const struct asyc_intr_info *info;
struct sisl_global_map *global = &afu->afu_map->global;
@@ -1303,8 +1308,8 @@ static irqreturn_t cxlflash_async_err_irq(int irq, void *data)
reg_unmasked = (reg & SISL_ASTATUS_UNMASK);
if (reg_unmasked == 0) {
- pr_err("%s: spurious interrupt, aintr_status 0x%016llX\n",
- __func__, reg);
+ dev_err(dev, "%s: spurious interrupt, aintr_status 0x%016llX\n",
+ __func__, reg);
goto out;
}
@@ -1319,8 +1324,8 @@ static irqreturn_t cxlflash_async_err_irq(int irq, void *data)
port = info->port;
- pr_err("%s: FC Port %d -> %s, fc_status 0x%08llX\n",
- __func__, port, info->desc,
+ dev_err(dev, "%s: FC Port %d -> %s, fc_status 0x%08llX\n",
+ __func__, port, info->desc,
readq_be(&global->fc_regs[port][FC_STATUS / 8]));
/*
@@ -1328,8 +1333,8 @@ static irqreturn_t cxlflash_async_err_irq(int irq, void *data)
* again if cleared before or w/o a reset
*/
if (info->action & LINK_RESET) {
- pr_err("%s: FC Port %d: resetting link\n",
- __func__, port);
+ dev_err(dev, "%s: FC Port %d: resetting link\n",
+ __func__, port);
cfg->lr_state = LINK_RESET_REQUIRED;
cfg->lr_port = port;
schedule_work(&cfg->work_q);
@@ -1343,8 +1348,8 @@ static irqreturn_t cxlflash_async_err_irq(int irq, void *data)
* should be the same and tracing one is sufficient.
*/
- pr_err("%s: fc %d: clearing fc_error 0x%08llX\n",
- __func__, port, reg);
+ dev_err(dev, "%s: fc %d: clearing fc_error 0x%08llX\n",
+ __func__, port, reg);
writeq_be(reg, &global->fc_regs[port][FC_ERROR / 8]);
writeq_be(0, &global->fc_regs[port][FC_ERRCAP / 8]);
@@ -1352,7 +1357,7 @@ static irqreturn_t cxlflash_async_err_irq(int irq, void *data)
}
out:
- pr_debug("%s: returning rc=%d, afu=%p\n", __func__, IRQ_HANDLED, afu);
+ dev_dbg(dev, "%s: returning IRQ_HANDLED, afu=%p\n", __func__, afu);
return IRQ_HANDLED;
}
@@ -1396,7 +1401,7 @@ static int read_vpd(struct cxlflash_cfg *cfg, u64 wwpn[])
/* Get the VPD data from the device */
vpd_size = pci_read_vpd(dev, 0, sizeof(vpd_data), vpd_data);
if (unlikely(vpd_size <= 0)) {
- pr_err("%s: Unable to read VPD (size = %ld)\n",
+ dev_err(&dev->dev, "%s: Unable to read VPD (size = %ld)\n",
__func__, vpd_size);
rc = -ENODEV;
goto out;
@@ -1406,7 +1411,8 @@ static int read_vpd(struct cxlflash_cfg *cfg, u64 wwpn[])
ro_start = pci_vpd_find_tag(vpd_data, 0, vpd_size,
PCI_VPD_LRDT_RO_DATA);
if (unlikely(ro_start < 0)) {
- pr_err("%s: VPD Read-only data not found\n", __func__);
+ dev_err(&dev->dev, "%s: VPD Read-only data not found\n",
+ __func__);
rc = -ENODEV;
goto out;
}
@@ -1435,8 +1441,8 @@ static int read_vpd(struct cxlflash_cfg *cfg, u64 wwpn[])
i = pci_vpd_find_info_keyword(vpd_data, i, j, wwpn_vpd_tags[k]);
if (unlikely(i < 0)) {
- pr_err("%s: Port %d WWPN not found in VPD\n",
- __func__, k);
+ dev_err(&dev->dev, "%s: Port %d WWPN not found "
+ "in VPD\n", __func__, k);
rc = -ENODEV;
goto out;
}
@@ -1444,7 +1450,8 @@ static int read_vpd(struct cxlflash_cfg *cfg, u64 wwpn[])
j = pci_vpd_info_field_size(&vpd_data[i]);
i += PCI_VPD_INFO_FLD_HDR_SIZE;
if (unlikely((i + j > vpd_size) || (j != WWPN_LEN))) {
- pr_err("%s: Port %d WWPN incomplete or VPD corrupt\n",
+ dev_err(&dev->dev, "%s: Port %d WWPN incomplete or "
+ "VPD corrupt\n",
__func__, k);
rc = -ENODEV;
goto out;
@@ -1453,8 +1460,8 @@ static int read_vpd(struct cxlflash_cfg *cfg, u64 wwpn[])
memcpy(tmp_buf, &vpd_data[i], WWPN_LEN);
rc = kstrtoul(tmp_buf, WWPN_LEN, (ulong *)&wwpn[k]);
if (unlikely(rc)) {
- pr_err("%s: Fail to convert port %d WWPN to integer\n",
- __func__, k);
+ dev_err(&dev->dev, "%s: Fail to convert port %d WWPN "
+ "to integer\n", __func__, k);
rc = -ENODEV;
goto out;
}
@@ -1511,6 +1518,7 @@ static void init_pcr(struct cxlflash_cfg *cfg)
static int init_global(struct cxlflash_cfg *cfg)
{
struct afu *afu = cfg->afu;
+ struct device *dev = &cfg->dev->dev;
u64 wwpn[NUM_FC_PORTS]; /* wwpn of AFU ports */
int i = 0, num_ports = 0;
int rc = 0;
@@ -1518,7 +1526,7 @@ static int init_global(struct cxlflash_cfg *cfg)
rc = read_vpd(cfg, &wwpn[0]);
if (rc) {
- pr_err("%s: could not read vpd rc=%d\n", __func__, rc);
+ dev_err(dev, "%s: could not read vpd rc=%d\n", __func__, rc);
goto out;
}
@@ -1561,7 +1569,7 @@ static int init_global(struct cxlflash_cfg *cfg)
afu_set_wwpn(afu, i,
&afu->afu_map->global.fc_regs[i][0],
wwpn[i])) {
- pr_err("%s: failed to set WWPN on port %d\n",
+ dev_err(dev, "%s: failed to set WWPN on port %d\n",
__func__, i);
rc = -EIO;
goto out;
@@ -1804,6 +1812,7 @@ int cxlflash_afu_sync(struct afu *afu, ctx_hndl_t ctx_hndl_u,
res_hndl_t res_hndl_u, u8 mode)
{
struct cxlflash_cfg *cfg = afu->parent;
+ struct device *dev = &cfg->dev->dev;
struct afu_cmd *cmd = NULL;
int rc = 0;
int retry_cnt = 0;
@@ -1822,7 +1831,7 @@ retry:
udelay(1000 * retry_cnt);
if (retry_cnt < MC_RETRY_CNT)
goto retry;
- pr_err("%s: could not get a free command\n", __func__);
+ dev_err(dev, "%s: could not get a free command\n", __func__);
rc = -1;
goto out;
}
@@ -2310,6 +2319,7 @@ static void cxlflash_worker_thread(struct work_struct *work)
struct cxlflash_cfg *cfg = container_of(work, struct cxlflash_cfg,
work_q);
struct afu *afu = cfg->afu;
+ struct device *dev = &cfg->dev->dev;
int port;
ulong lock_flags;
@@ -2323,7 +2333,8 @@ static void cxlflash_worker_thread(struct work_struct *work)
if (cfg->lr_state == LINK_RESET_REQUIRED) {
port = cfg->lr_port;
if (port < 0)
- pr_err("%s: invalid port index %d\n", __func__, port);
+ dev_err(dev, "%s: invalid port index %d\n",
+ __func__, port);
else {
spin_unlock_irqrestore(cfg->host->host_lock,
lock_flags);
@@ -2428,7 +2439,7 @@ static int cxlflash_probe(struct pci_dev *pdev,
*/
phys_dev = cxl_get_phys_dev(pdev);
if (!dev_is_pci(phys_dev)) {
- pr_err("%s: not a pci dev\n", __func__);
+ dev_err(&pdev->dev, "%s: not a pci dev\n", __func__);
rc = -ENODEV;
goto out_remove;
}
--
2.1.0
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