[PATCH AUTOSEL 5.5 43/75] scsi: lpfc: Fix erroneous cpu limit of 128 on I/O statistics

From: Sasha Levin
Date: Sat Apr 18 2020 - 10:10:18 EST

From: James Smart <jsmart2021@xxxxxxxxx>

[ Upstream commit 840eda9602d30342486e85e7e96499f565572e4b ]

The cpu io statistics were capped by a hard define limit of 128. This
effectively was a max number of CPUs, not an actual CPU count, nor actual
CPU numbers which can be even larger than both of those values. This made
stats off/misleading and on large CPU count systems, wrong.

Fix the stats so that all CPUs can have a stats struct. Fix the looping
such that it loops by hdwq, finds CPUs that used the hdwq, and sum the
stats, then display.

Link: https://lore.kernel.org/r/20200322181304.37655-9-jsmart2021@xxxxxxxxx
Signed-off-by: James Smart <jsmart2021@xxxxxxxxx>
Signed-off-by: Dick Kennedy <dick.kennedy@xxxxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/scsi/lpfc/lpfc.h | 9 +-
drivers/scsi/lpfc/lpfc_debugfs.c | 204 ++++++++++++++++++-------------
drivers/scsi/lpfc/lpfc_debugfs.h | 1 -
drivers/scsi/lpfc/lpfc_init.c | 28 +++++
drivers/scsi/lpfc/lpfc_nvme.c | 45 ++++---
drivers/scsi/lpfc/lpfc_nvmet.c | 55 ++++-----
drivers/scsi/lpfc/lpfc_scsi.c | 23 +---
drivers/scsi/lpfc/lpfc_sli4.h | 19 +--
8 files changed, 215 insertions(+), 169 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
index 935f988041989..d6a305c4e44ed 100644
--- a/drivers/scsi/lpfc/lpfc.h
+++ b/drivers/scsi/lpfc/lpfc.h
@@ -482,7 +482,7 @@ struct lpfc_vport {
struct dentry *debug_nvmestat;
struct dentry *debug_scsistat;
struct dentry *debug_nvmektime;
- struct dentry *debug_cpucheck;
+ struct dentry *debug_hdwqstat;
struct dentry *vport_debugfs_root;
struct lpfc_debugfs_trc *disc_trc;
atomic_t disc_trc_cnt;
@@ -1175,12 +1175,11 @@ struct lpfc_hba {
uint16_t sfp_warning;

#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
- uint16_t cpucheck_on;
+ uint16_t hdwqstat_on;
#define LPFC_CHECK_OFF 0
#define LPFC_CHECK_NVME_IO 1
-#define LPFC_CHECK_NVMET_RCV 2
-#define LPFC_CHECK_NVMET_IO 4
-#define LPFC_CHECK_SCSI_IO 8
+#define LPFC_CHECK_NVMET_IO 2
+#define LPFC_CHECK_SCSI_IO 4
uint16_t ktime_on;
uint64_t ktime_data_samples;
uint64_t ktime_status_samples;
diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c
index a5ecbce4eda23..7d453047c4b67 100644
--- a/drivers/scsi/lpfc/lpfc_debugfs.c
+++ b/drivers/scsi/lpfc/lpfc_debugfs.c
@@ -1603,42 +1603,50 @@ lpfc_debugfs_nvmeio_trc_data(struct lpfc_hba *phba, char *buf, int size)
}

/**
- * lpfc_debugfs_cpucheck_data - Dump target node list to a buffer
+ * lpfc_debugfs_hdwqstat_data - Dump I/O stats to a buffer
* @vport: The vport to gather target node info from.
* @buf: The buffer to dump log into.
* @size: The maximum amount of data to process.
*
* Description:
- * This routine dumps the NVME statistics associated with @vport
+ * This routine dumps the NVME + SCSI statistics associated with @vport
*
* Return Value:
* This routine returns the amount of bytes that were dumped into @buf and will
* not exceed @size.
**/
static int
-lpfc_debugfs_cpucheck_data(struct lpfc_vport *vport, char *buf, int size)
+lpfc_debugfs_hdwqstat_data(struct lpfc_vport *vport, char *buf, int size)
{
struct lpfc_hba *phba = vport->phba;
struct lpfc_sli4_hdw_queue *qp;
- int i, j, max_cnt;
- int len = 0;
+ struct lpfc_hdwq_stat *c_stat;
+ int i, j, len;
uint32_t tot_xmt;
uint32_t tot_rcv;
uint32_t tot_cmpl;
+ char tmp[LPFC_MAX_SCSI_INFO_TMP_LEN] = {0};

- len += scnprintf(buf + len, PAGE_SIZE - len,
- "CPUcheck %s ",
- (phba->cpucheck_on & LPFC_CHECK_NVME_IO ?
- "Enabled" : "Disabled"));
- if (phba->nvmet_support) {
- len += scnprintf(buf + len, PAGE_SIZE - len,
- "%s\n",
- (phba->cpucheck_on & LPFC_CHECK_NVMET_RCV ?
- "Rcv Enabled\n" : "Rcv Disabled\n"));
- } else {
- len += scnprintf(buf + len, PAGE_SIZE - len, "\n");
- }
- max_cnt = size - LPFC_DEBUG_OUT_LINE_SZ;
+ scnprintf(tmp, sizeof(tmp), "HDWQ Stats:\n\n");
+ if (strlcat(buf, tmp, size) >= size)
+ goto buffer_done;
+
+ scnprintf(tmp, sizeof(tmp), "(NVME Accounting: %s) ",
+ (phba->hdwqstat_on &
+ (LPFC_CHECK_NVME_IO | LPFC_CHECK_NVMET_IO) ?
+ "Enabled" : "Disabled"));
+ if (strlcat(buf, tmp, size) >= size)
+ goto buffer_done;
+
+ scnprintf(tmp, sizeof(tmp), "(SCSI Accounting: %s) ",
+ (phba->hdwqstat_on & LPFC_CHECK_SCSI_IO ?
+ "Enabled" : "Disabled"));
+ if (strlcat(buf, tmp, size) >= size)
+ goto buffer_done;
+
+ scnprintf(tmp, sizeof(tmp), "\n\n");
+ if (strlcat(buf, tmp, size) >= size)
+ goto buffer_done;

for (i = 0; i < phba->cfg_hdw_queue; i++) {
qp = &phba->sli4_hba.hdwq[i];
@@ -1646,46 +1654,76 @@ lpfc_debugfs_cpucheck_data(struct lpfc_vport *vport, char *buf, int size)
tot_rcv = 0;
tot_xmt = 0;
tot_cmpl = 0;
- for (j = 0; j < LPFC_CHECK_CPU_CNT; j++) {
- tot_xmt += qp->cpucheck_xmt_io[j];
- tot_cmpl += qp->cpucheck_cmpl_io[j];
- if (phba->nvmet_support)
- tot_rcv += qp->cpucheck_rcv_io[j];
- }

- /* Only display Hardware Qs with something */
- if (!tot_xmt && !tot_cmpl && !tot_rcv)
- continue;
+ for_each_present_cpu(j) {
+ c_stat = per_cpu_ptr(phba->sli4_hba.c_stat, j);
+
+ /* Only display for this HDWQ */
+ if (i != c_stat->hdwq_no)
+ continue;

- len += scnprintf(buf + len, PAGE_SIZE - len,
- "HDWQ %03d: ", i);
- for (j = 0; j < LPFC_CHECK_CPU_CNT; j++) {
/* Only display non-zero counters */
- if (!qp->cpucheck_xmt_io[j] &&
- !qp->cpucheck_cmpl_io[j] &&
- !qp->cpucheck_rcv_io[j])
+ if (!c_stat->xmt_io && !c_stat->cmpl_io &&
+ !c_stat->rcv_io)
continue;
+
+ if (!tot_xmt && !tot_cmpl && !tot_rcv) {
+ /* Print HDWQ string only the first time */
+ scnprintf(tmp, sizeof(tmp), "[HDWQ %d]:\t", i);
+ if (strlcat(buf, tmp, size) >= size)
+ goto buffer_done;
+ }
+
+ tot_xmt += c_stat->xmt_io;
+ tot_cmpl += c_stat->cmpl_io;
+ if (phba->nvmet_support)
+ tot_rcv += c_stat->rcv_io;
+
+ scnprintf(tmp, sizeof(tmp), "| [CPU %d]: ", j);
+ if (strlcat(buf, tmp, size) >= size)
+ goto buffer_done;
+
if (phba->nvmet_support) {
- len += scnprintf(buf + len, PAGE_SIZE - len,
- "CPU %03d: %x/%x/%x ", j,
- qp->cpucheck_rcv_io[j],
- qp->cpucheck_xmt_io[j],
- qp->cpucheck_cmpl_io[j]);
+ scnprintf(tmp, sizeof(tmp),
+ "XMT 0x%x CMPL 0x%x RCV 0x%x |",
+ c_stat->xmt_io, c_stat->cmpl_io,
+ c_stat->rcv_io);
+ if (strlcat(buf, tmp, size) >= size)
+ goto buffer_done;
} else {
- len += scnprintf(buf + len, PAGE_SIZE - len,
- "CPU %03d: %x/%x ", j,
- qp->cpucheck_xmt_io[j],
- qp->cpucheck_cmpl_io[j]);
+ scnprintf(tmp, sizeof(tmp),
+ "XMT 0x%x CMPL 0x%x |",
+ c_stat->xmt_io, c_stat->cmpl_io);
+ if (strlcat(buf, tmp, size) >= size)
+ goto buffer_done;
}
}
- len += scnprintf(buf + len, PAGE_SIZE - len,
- "Total: %x\n", tot_xmt);
- if (len >= max_cnt) {
- len += scnprintf(buf + len, PAGE_SIZE - len,
- "Truncated ...\n");
- return len;
+
+ /* Check if nothing to display */
+ if (!tot_xmt && !tot_cmpl && !tot_rcv)
+ continue;
+
+ scnprintf(tmp, sizeof(tmp), "\t->\t[HDWQ Total: ");
+ if (strlcat(buf, tmp, size) >= size)
+ goto buffer_done;
+
+ if (phba->nvmet_support) {
+ scnprintf(tmp, sizeof(tmp),
+ "XMT 0x%x CMPL 0x%x RCV 0x%x]\n\n",
+ tot_xmt, tot_cmpl, tot_rcv);
+ if (strlcat(buf, tmp, size) >= size)
+ goto buffer_done;
+ } else {
+ scnprintf(tmp, sizeof(tmp),
+ "XMT 0x%x CMPL 0x%x]\n\n",
+ tot_xmt, tot_cmpl);
+ if (strlcat(buf, tmp, size) >= size)
+ goto buffer_done;
}
}
+
+buffer_done:
+ len = strnlen(buf, size);
return len;
}

@@ -2914,7 +2952,7 @@ lpfc_debugfs_nvmeio_trc_write(struct file *file, const char __user *buf,
}

static int
-lpfc_debugfs_cpucheck_open(struct inode *inode, struct file *file)
+lpfc_debugfs_hdwqstat_open(struct inode *inode, struct file *file)
{
struct lpfc_vport *vport = inode->i_private;
struct lpfc_debug *debug;
@@ -2925,14 +2963,14 @@ lpfc_debugfs_cpucheck_open(struct inode *inode, struct file *file)
goto out;

/* Round to page boundary */
- debug->buffer = kmalloc(LPFC_CPUCHECK_SIZE, GFP_KERNEL);
+ debug->buffer = kcalloc(1, LPFC_SCSISTAT_SIZE, GFP_KERNEL);
if (!debug->buffer) {
kfree(debug);
goto out;
}

- debug->len = lpfc_debugfs_cpucheck_data(vport, debug->buffer,
- LPFC_CPUCHECK_SIZE);
+ debug->len = lpfc_debugfs_hdwqstat_data(vport, debug->buffer,
+ LPFC_SCSISTAT_SIZE);

debug->i_private = inode->i_private;
file->private_data = debug;
@@ -2943,16 +2981,16 @@ lpfc_debugfs_cpucheck_open(struct inode *inode, struct file *file)
}

static ssize_t
-lpfc_debugfs_cpucheck_write(struct file *file, const char __user *buf,
+lpfc_debugfs_hdwqstat_write(struct file *file, const char __user *buf,
size_t nbytes, loff_t *ppos)
{
struct lpfc_debug *debug = file->private_data;
struct lpfc_vport *vport = (struct lpfc_vport *)debug->i_private;
struct lpfc_hba *phba = vport->phba;
- struct lpfc_sli4_hdw_queue *qp;
+ struct lpfc_hdwq_stat *c_stat;
char mybuf[64];
char *pbuf;
- int i, j;
+ int i;

if (nbytes > 64)
nbytes = 64;
@@ -2965,41 +3003,39 @@ lpfc_debugfs_cpucheck_write(struct file *file, const char __user *buf,

if ((strncmp(pbuf, "on", sizeof("on") - 1) == 0)) {
if (phba->nvmet_support)
- phba->cpucheck_on |= LPFC_CHECK_NVMET_IO;
+ phba->hdwqstat_on |= LPFC_CHECK_NVMET_IO;
else
- phba->cpucheck_on |= (LPFC_CHECK_NVME_IO |
+ phba->hdwqstat_on |= (LPFC_CHECK_NVME_IO |
LPFC_CHECK_SCSI_IO);
return strlen(pbuf);
} else if ((strncmp(pbuf, "nvme_on", sizeof("nvme_on") - 1) == 0)) {
if (phba->nvmet_support)
- phba->cpucheck_on |= LPFC_CHECK_NVMET_IO;
+ phba->hdwqstat_on |= LPFC_CHECK_NVMET_IO;
else
- phba->cpucheck_on |= LPFC_CHECK_NVME_IO;
+ phba->hdwqstat_on |= LPFC_CHECK_NVME_IO;
return strlen(pbuf);
} else if ((strncmp(pbuf, "scsi_on", sizeof("scsi_on") - 1) == 0)) {
- phba->cpucheck_on |= LPFC_CHECK_SCSI_IO;
+ if (!phba->nvmet_support)
+ phba->hdwqstat_on |= LPFC_CHECK_SCSI_IO;
return strlen(pbuf);
- } else if ((strncmp(pbuf, "rcv",
- sizeof("rcv") - 1) == 0)) {
- if (phba->nvmet_support)
- phba->cpucheck_on |= LPFC_CHECK_NVMET_RCV;
- else
- return -EINVAL;
+ } else if ((strncmp(pbuf, "nvme_off", sizeof("nvme_off") - 1) == 0)) {
+ phba->hdwqstat_on &= ~(LPFC_CHECK_NVME_IO |
+ LPFC_CHECK_NVMET_IO);
+ return strlen(pbuf);
+ } else if ((strncmp(pbuf, "scsi_off", sizeof("scsi_off") - 1) == 0)) {
+ phba->hdwqstat_on &= ~LPFC_CHECK_SCSI_IO;
return strlen(pbuf);
} else if ((strncmp(pbuf, "off",
sizeof("off") - 1) == 0)) {
- phba->cpucheck_on = LPFC_CHECK_OFF;
+ phba->hdwqstat_on = LPFC_CHECK_OFF;
return strlen(pbuf);
} else if ((strncmp(pbuf, "zero",
sizeof("zero") - 1) == 0)) {
- for (i = 0; i < phba->cfg_hdw_queue; i++) {
- qp = &phba->sli4_hba.hdwq[i];
-
- for (j = 0; j < LPFC_CHECK_CPU_CNT; j++) {
- qp->cpucheck_rcv_io[j] = 0;
- qp->cpucheck_xmt_io[j] = 0;
- qp->cpucheck_cmpl_io[j] = 0;
- }
+ for_each_present_cpu(i) {
+ c_stat = per_cpu_ptr(phba->sli4_hba.c_stat, i);
+ c_stat->xmt_io = 0;
+ c_stat->cmpl_io = 0;
+ c_stat->rcv_io = 0;
}
return strlen(pbuf);
}
@@ -5444,13 +5480,13 @@ static const struct file_operations lpfc_debugfs_op_nvmeio_trc = {
.release = lpfc_debugfs_release,
};

-#undef lpfc_debugfs_op_cpucheck
-static const struct file_operations lpfc_debugfs_op_cpucheck = {
+#undef lpfc_debugfs_op_hdwqstat
+static const struct file_operations lpfc_debugfs_op_hdwqstat = {
.owner = THIS_MODULE,
- .open = lpfc_debugfs_cpucheck_open,
+ .open = lpfc_debugfs_hdwqstat_open,
.llseek = lpfc_debugfs_lseek,
.read = lpfc_debugfs_read,
- .write = lpfc_debugfs_cpucheck_write,
+ .write = lpfc_debugfs_hdwqstat_write,
.release = lpfc_debugfs_release,
};

@@ -6074,11 +6110,11 @@ lpfc_debugfs_initialize(struct lpfc_vport *vport)
vport->vport_debugfs_root,
vport, &lpfc_debugfs_op_nvmektime);

- snprintf(name, sizeof(name), "cpucheck");
- vport->debug_cpucheck =
+ snprintf(name, sizeof(name), "hdwqstat");
+ vport->debug_hdwqstat =
debugfs_create_file(name, 0644,
vport->vport_debugfs_root,
- vport, &lpfc_debugfs_op_cpucheck);
+ vport, &lpfc_debugfs_op_hdwqstat);

/*
* The following section is for additional directories/files for the
@@ -6212,8 +6248,8 @@ lpfc_debugfs_terminate(struct lpfc_vport *vport)
debugfs_remove(vport->debug_nvmektime); /* nvmektime */
vport->debug_nvmektime = NULL;

- debugfs_remove(vport->debug_cpucheck); /* cpucheck */
- vport->debug_cpucheck = NULL;
+ debugfs_remove(vport->debug_hdwqstat); /* hdwqstat */
+ vport->debug_hdwqstat = NULL;

if (vport->vport_debugfs_root) {
debugfs_remove(vport->vport_debugfs_root); /* vportX */
diff --git a/drivers/scsi/lpfc/lpfc_debugfs.h b/drivers/scsi/lpfc/lpfc_debugfs.h
index 20f2537af511c..6643b9bfd4f39 100644
--- a/drivers/scsi/lpfc/lpfc_debugfs.h
+++ b/drivers/scsi/lpfc/lpfc_debugfs.h
@@ -47,7 +47,6 @@
/* nvmestat output buffer size */
#define LPFC_NVMESTAT_SIZE 8192
#define LPFC_NVMEKTIME_SIZE 8192
-#define LPFC_CPUCHECK_SIZE 8192
#define LPFC_NVMEIO_TRC_SIZE 8192

/* scsistat output buffer size */
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 6a04fdb3fbf21..d4a90bec93899 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -6935,6 +6935,17 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
rc = -ENOMEM;
goto out_free_hba_cpu_map;
}
+
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ phba->sli4_hba.c_stat = alloc_percpu(struct lpfc_hdwq_stat);
+ if (!phba->sli4_hba.c_stat) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+ "3332 Failed allocating per cpu hdwq stats\n");
+ rc = -ENOMEM;
+ goto out_free_hba_eq_info;
+ }
+#endif
+
/*
* Enable sr-iov virtual functions if supported and configured
* through the module parameter.
@@ -6954,6 +6965,10 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)

return 0;

+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+out_free_hba_eq_info:
+ free_percpu(phba->sli4_hba.eq_info);
+#endif
out_free_hba_cpu_map:
kfree(phba->sli4_hba.cpu_map);
out_free_hba_eq_hdl:
@@ -6992,6 +7007,9 @@ lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba)
struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;

free_percpu(phba->sli4_hba.eq_info);
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ free_percpu(phba->sli4_hba.c_stat);
+#endif

/* Free memory allocated for msi-x interrupt vector to CPU mapping */
kfree(phba->sli4_hba.cpu_map);
@@ -10837,6 +10855,9 @@ lpfc_cpu_affinity_check(struct lpfc_hba *phba, int vectors)
#ifdef CONFIG_X86
struct cpuinfo_x86 *cpuinfo;
#endif
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ struct lpfc_hdwq_stat *c_stat;
+#endif

max_phys_id = 0;
min_phys_id = LPFC_VECTOR_MAP_EMPTY;
@@ -11088,10 +11109,17 @@ lpfc_cpu_affinity_check(struct lpfc_hba *phba, int vectors)
idx = 0;
for_each_possible_cpu(cpu) {
cpup = &phba->sli4_hba.cpu_map[cpu];
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ c_stat = per_cpu_ptr(phba->sli4_hba.c_stat, cpu);
+ c_stat->hdwq_no = cpup->hdwq;
+#endif
if (cpup->hdwq != LPFC_VECTOR_MAP_EMPTY)
continue;

cpup->hdwq = idx++ % phba->cfg_hdw_queue;
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ c_stat->hdwq_no = cpup->hdwq;
+#endif
lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
"3340 Set Affinity: not present "
"CPU %d hdwq %d\n",
diff --git a/drivers/scsi/lpfc/lpfc_nvme.c b/drivers/scsi/lpfc/lpfc_nvme.c
index 32b28651039e0..38936b7ce043f 100644
--- a/drivers/scsi/lpfc/lpfc_nvme.c
+++ b/drivers/scsi/lpfc/lpfc_nvme.c
@@ -1012,6 +1012,9 @@ lpfc_nvme_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
uint32_t code, status, idx;
uint16_t cid, sqhd, data;
uint32_t *ptr;
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ int cpu;
+#endif

/* Sanity check on return of outstanding command */
if (!lpfc_ncmd) {
@@ -1184,19 +1187,15 @@ lpfc_nvme_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
phba->ktime_last_cmd = lpfc_ncmd->ts_data_nvme;
lpfc_nvme_ktime(phba, lpfc_ncmd);
}
- if (unlikely(phba->cpucheck_on & LPFC_CHECK_NVME_IO)) {
- uint32_t cpu;
- idx = lpfc_ncmd->cur_iocbq.hba_wqidx;
+ if (unlikely(phba->hdwqstat_on & LPFC_CHECK_NVME_IO)) {
cpu = raw_smp_processor_id();
- if (cpu < LPFC_CHECK_CPU_CNT) {
- if (lpfc_ncmd->cpu != cpu)
- lpfc_printf_vlog(vport,
- KERN_INFO, LOG_NVME_IOERR,
- "6701 CPU Check cmpl: "
- "cpu %d expect %d\n",
- cpu, lpfc_ncmd->cpu);
- phba->sli4_hba.hdwq[idx].cpucheck_cmpl_io[cpu]++;
- }
+ this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io);
+ if (lpfc_ncmd->cpu != cpu)
+ lpfc_printf_vlog(vport,
+ KERN_INFO, LOG_NVME_IOERR,
+ "6701 CPU Check cmpl: "
+ "cpu %d expect %d\n",
+ cpu, lpfc_ncmd->cpu);
}
#endif

@@ -1745,19 +1744,17 @@ lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port *pnvme_lport,
if (lpfc_ncmd->ts_cmd_start)
lpfc_ncmd->ts_cmd_wqput = ktime_get_ns();

- if (phba->cpucheck_on & LPFC_CHECK_NVME_IO) {
+ if (phba->hdwqstat_on & LPFC_CHECK_NVME_IO) {
cpu = raw_smp_processor_id();
- if (cpu < LPFC_CHECK_CPU_CNT) {
- lpfc_ncmd->cpu = cpu;
- if (idx != cpu)
- lpfc_printf_vlog(vport,
- KERN_INFO, LOG_NVME_IOERR,
- "6702 CPU Check cmd: "
- "cpu %d wq %d\n",
- lpfc_ncmd->cpu,
- lpfc_queue_info->index);
- phba->sli4_hba.hdwq[idx].cpucheck_xmt_io[cpu]++;
- }
+ this_cpu_inc(phba->sli4_hba.c_stat->xmt_io);
+ lpfc_ncmd->cpu = cpu;
+ if (idx != cpu)
+ lpfc_printf_vlog(vport,
+ KERN_INFO, LOG_NVME_IOERR,
+ "6702 CPU Check cmd: "
+ "cpu %d wq %d\n",
+ lpfc_ncmd->cpu,
+ lpfc_queue_info->index);
}
#endif
return 0;
diff --git a/drivers/scsi/lpfc/lpfc_nvmet.c b/drivers/scsi/lpfc/lpfc_nvmet.c
index 9dc9afe1c2550..f3760a4827d82 100644
--- a/drivers/scsi/lpfc/lpfc_nvmet.c
+++ b/drivers/scsi/lpfc/lpfc_nvmet.c
@@ -707,7 +707,7 @@ lpfc_nvmet_xmt_fcp_op_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
struct lpfc_nvmet_rcv_ctx *ctxp;
uint32_t status, result, op, start_clean, logerr;
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
- uint32_t id;
+ int id;
#endif

ctxp = cmdwqe->context2;
@@ -814,16 +814,14 @@ lpfc_nvmet_xmt_fcp_op_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
rsp->done(rsp);
}
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
- if (phba->cpucheck_on & LPFC_CHECK_NVMET_IO) {
+ if (phba->hdwqstat_on & LPFC_CHECK_NVMET_IO) {
id = raw_smp_processor_id();
- if (id < LPFC_CHECK_CPU_CNT) {
- if (ctxp->cpu != id)
- lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
- "6704 CPU Check cmdcmpl: "
- "cpu %d expect %d\n",
- id, ctxp->cpu);
- phba->sli4_hba.hdwq[rsp->hwqid].cpucheck_cmpl_io[id]++;
- }
+ this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io);
+ if (ctxp->cpu != id)
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
+ "6704 CPU Check cmdcmpl: "
+ "cpu %d expect %d\n",
+ id, ctxp->cpu);
}
#endif
}
@@ -931,6 +929,9 @@ lpfc_nvmet_xmt_fcp_op(struct nvmet_fc_target_port *tgtport,
struct lpfc_sli_ring *pring;
unsigned long iflags;
int rc;
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ int id;
+#endif

if (phba->pport->load_flag & FC_UNLOADING) {
rc = -ENODEV;
@@ -954,16 +955,14 @@ lpfc_nvmet_xmt_fcp_op(struct nvmet_fc_target_port *tgtport,
if (!ctxp->hdwq)
ctxp->hdwq = &phba->sli4_hba.hdwq[rsp->hwqid];

- if (phba->cpucheck_on & LPFC_CHECK_NVMET_IO) {
- int id = raw_smp_processor_id();
- if (id < LPFC_CHECK_CPU_CNT) {
- if (rsp->hwqid != id)
- lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
- "6705 CPU Check OP: "
- "cpu %d expect %d\n",
- id, rsp->hwqid);
- phba->sli4_hba.hdwq[rsp->hwqid].cpucheck_xmt_io[id]++;
- }
+ if (phba->hdwqstat_on & LPFC_CHECK_NVMET_IO) {
+ id = raw_smp_processor_id();
+ this_cpu_inc(phba->sli4_hba.c_stat->xmt_io);
+ if (rsp->hwqid != id)
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
+ "6705 CPU Check OP: "
+ "cpu %d expect %d\n",
+ id, rsp->hwqid);
ctxp->cpu = id; /* Setup cpu for cmpl check */
}
#endif
@@ -2270,15 +2269,13 @@ lpfc_nvmet_unsol_fcp_buffer(struct lpfc_hba *phba,
size = nvmebuf->bytes_recv;

#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
- if (phba->cpucheck_on & LPFC_CHECK_NVMET_RCV) {
- if (current_cpu < LPFC_CHECK_CPU_CNT) {
- if (idx != current_cpu)
- lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
- "6703 CPU Check rcv: "
- "cpu %d expect %d\n",
- current_cpu, idx);
- phba->sli4_hba.hdwq[idx].cpucheck_rcv_io[current_cpu]++;
- }
+ if (phba->hdwqstat_on & LPFC_CHECK_NVMET_IO) {
+ this_cpu_inc(phba->sli4_hba.c_stat->rcv_io);
+ if (idx != current_cpu)
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
+ "6703 CPU Check rcv: "
+ "cpu %d expect %d\n",
+ current_cpu, idx);
}
#endif

diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index b138d9fee6757..328e000f1b109 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -3803,9 +3803,6 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
struct Scsi_Host *shost;
int idx;
uint32_t logit = LOG_FCP;
-#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
- int cpu;
-#endif

/* Guard against abort handler being called at same time */
spin_lock(&lpfc_cmd->buf_lock);
@@ -3824,11 +3821,8 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
phba->sli4_hba.hdwq[idx].scsi_cstat.io_cmpls++;

#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
- if (unlikely(phba->cpucheck_on & LPFC_CHECK_SCSI_IO)) {
- cpu = raw_smp_processor_id();
- if (cpu < LPFC_CHECK_CPU_CNT && phba->sli4_hba.hdwq)
- phba->sli4_hba.hdwq[idx].cpucheck_cmpl_io[cpu]++;
- }
+ if (unlikely(phba->hdwqstat_on & LPFC_CHECK_SCSI_IO))
+ this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io);
#endif
shost = cmd->device->host;

@@ -4501,9 +4495,6 @@ lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
struct lpfc_io_buf *lpfc_cmd;
struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
int err, idx;
-#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
- int cpu;
-#endif

rdata = lpfc_rport_data_from_scsi_device(cmnd->device);

@@ -4624,14 +4615,8 @@ lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp);

#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
- if (unlikely(phba->cpucheck_on & LPFC_CHECK_SCSI_IO)) {
- cpu = raw_smp_processor_id();
- if (cpu < LPFC_CHECK_CPU_CNT) {
- struct lpfc_sli4_hdw_queue *hdwq =
- &phba->sli4_hba.hdwq[lpfc_cmd->hdwq_no];
- hdwq->cpucheck_xmt_io[cpu]++;
- }
- }
+ if (unlikely(phba->hdwqstat_on & LPFC_CHECK_SCSI_IO))
+ this_cpu_inc(phba->sli4_hba.c_stat->xmt_io);
#endif
err = lpfc_sli_issue_iocb(phba, LPFC_FCP_RING,
&lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB);
diff --git a/drivers/scsi/lpfc/lpfc_sli4.h b/drivers/scsi/lpfc/lpfc_sli4.h
index d963ca8713833..8da7429e385a5 100644
--- a/drivers/scsi/lpfc/lpfc_sli4.h
+++ b/drivers/scsi/lpfc/lpfc_sli4.h
@@ -697,13 +697,6 @@ struct lpfc_sli4_hdw_queue {
struct lpfc_lock_stat lock_conflict;
#endif

-#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
-#define LPFC_CHECK_CPU_CNT 128
- uint32_t cpucheck_rcv_io[LPFC_CHECK_CPU_CNT];
- uint32_t cpucheck_xmt_io[LPFC_CHECK_CPU_CNT];
- uint32_t cpucheck_cmpl_io[LPFC_CHECK_CPU_CNT];
-#endif
-
/* Per HDWQ pool resources */
struct list_head sgl_list;
struct list_head cmd_rsp_buf_list;
@@ -740,6 +733,15 @@ struct lpfc_sli4_hdw_queue {
#define lpfc_qp_spin_lock(lock, qp, lstat) spin_lock(lock)
#endif

+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+struct lpfc_hdwq_stat {
+ u32 hdwq_no;
+ u32 rcv_io;
+ u32 xmt_io;
+ u32 cmpl_io;
+};
+#endif
+
struct lpfc_sli4_hba {
void __iomem *conf_regs_memmap_p; /* Kernel memory mapped address for
* config space registers
@@ -921,6 +923,9 @@ struct lpfc_sli4_hba {
struct cpumask numa_mask;
uint16_t curr_disp_cpu;
struct lpfc_eq_intr_info __percpu *eq_info;
+#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
+ struct lpfc_hdwq_stat __percpu *c_stat;
+#endif
uint32_t conf_trunk;
#define lpfc_conf_trunk_port0_WORD conf_trunk
#define lpfc_conf_trunk_port0_SHIFT 0
--
2.20.1