diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_debugfs.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_debugfs.c | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c index 218642d7c488..2a2c46766eb6 100644 --- a/drivers/scsi/lpfc/lpfc_debugfs.c +++ b/drivers/scsi/lpfc/lpfc_debugfs.c @@ -378,6 +378,126 @@ skipit: return len; } +/** + * lpfc_debugfs_multixripools_data - Display multi-XRI pools information + * @phba: The HBA to gather host buffer info from. + * @buf: The buffer to dump log into. + * @size: The maximum amount of data to process. + * + * Description: + * This routine displays current multi-XRI pools information including XRI + * count in public, private and txcmplq. It also displays current high and + * low watermark. + * + * Return Value: + * This routine returns the amount of bytes that were dumped into @buf and will + * not exceed @size. + **/ +static int +lpfc_debugfs_multixripools_data(struct lpfc_hba *phba, char *buf, int size) +{ + u32 i; + u32 hwq_count; + struct lpfc_sli4_hdw_queue *qp; + struct lpfc_multixri_pool *multixri_pool; + struct lpfc_pvt_pool *pvt_pool; + struct lpfc_pbl_pool *pbl_pool; + u32 txcmplq_cnt; + char tmp[LPFC_DEBUG_OUT_LINE_SZ] = {0}; + + /* + * Pbl: Current number of free XRIs in public pool + * Pvt: Current number of free XRIs in private pool + * Busy: Current number of outstanding XRIs + * HWM: Current high watermark + * pvt_empty: Incremented by 1 when IO submission fails (no xri) + * pbl_empty: Incremented by 1 when all pbl_pool are empty during + * IO submission + */ + scnprintf(tmp, sizeof(tmp), + "HWQ: Pbl Pvt Busy HWM | pvt_empty pbl_empty "); + if (strlcat(buf, tmp, size) >= size) + return strnlen(buf, size); + +#ifdef LPFC_MXP_STAT + /* + * MAXH: Max high watermark seen so far + * above_lmt: Incremented by 1 if xri_owned > xri_limit during + * IO submission + * below_lmt: Incremented by 1 if xri_owned <= xri_limit during + * IO submission + * locPbl_hit: Incremented by 1 if successfully get a batch of XRI from + * local pbl_pool + * othPbl_hit: Incremented by 1 if successfully get a batch of XRI from + * other pbl_pool + */ + scnprintf(tmp, sizeof(tmp), + "MAXH above_lmt below_lmt locPbl_hit othPbl_hit"); + if (strlcat(buf, tmp, size) >= size) + return strnlen(buf, size); + + /* + * sPbl: snapshot of Pbl 15 sec after stat gets cleared + * sPvt: snapshot of Pvt 15 sec after stat gets cleared + * sBusy: snapshot of Busy 15 sec after stat gets cleared + */ + scnprintf(tmp, sizeof(tmp), + " | sPbl sPvt sBusy"); + if (strlcat(buf, tmp, size) >= size) + return strnlen(buf, size); +#endif + + scnprintf(tmp, sizeof(tmp), "\n"); + if (strlcat(buf, tmp, size) >= size) + return strnlen(buf, size); + + hwq_count = phba->cfg_hdw_queue; + for (i = 0; i < hwq_count; i++) { + qp = &phba->sli4_hba.hdwq[i]; + multixri_pool = qp->p_multixri_pool; + if (!multixri_pool) + continue; + pbl_pool = &multixri_pool->pbl_pool; + pvt_pool = &multixri_pool->pvt_pool; + txcmplq_cnt = qp->fcp_wq->pring->txcmplq_cnt; + if (qp->nvme_wq) + txcmplq_cnt += qp->nvme_wq->pring->txcmplq_cnt; + + scnprintf(tmp, sizeof(tmp), + "%03d: %4d %4d %4d %4d | %10d %10d ", + i, pbl_pool->count, pvt_pool->count, + txcmplq_cnt, pvt_pool->high_watermark, + qp->empty_io_bufs, multixri_pool->pbl_empty_count); + if (strlcat(buf, tmp, size) >= size) + break; + +#ifdef LPFC_MXP_STAT + scnprintf(tmp, sizeof(tmp), + "%4d %10d %10d %10d %10d", + multixri_pool->stat_max_hwm, + multixri_pool->above_limit_count, + multixri_pool->below_limit_count, + multixri_pool->local_pbl_hit_count, + multixri_pool->other_pbl_hit_count); + if (strlcat(buf, tmp, size) >= size) + break; + + scnprintf(tmp, sizeof(tmp), + " | %4d %4d %5d", + multixri_pool->stat_pbl_count, + multixri_pool->stat_pvt_count, + multixri_pool->stat_busy_count); + if (strlcat(buf, tmp, size) >= size) + break; +#endif + + scnprintf(tmp, sizeof(tmp), "\n"); + if (strlcat(buf, tmp, size) >= size) + break; + } + return strnlen(buf, size); +} + static int lpfc_debugfs_last_hdwq; /** @@ -1752,6 +1872,53 @@ out: } /** + * lpfc_debugfs_multixripools_open - Open the multixripool debugfs buffer + * @inode: The inode pointer that contains a hba pointer. + * @file: The file pointer to attach the log output. + * + * Description: + * This routine is the entry point for the debugfs open file operation. It gets + * the hba from the i_private field in @inode, allocates the necessary buffer + * for the log, fills the buffer from the in-memory log for this hba, and then + * returns a pointer to that log in the private_data field in @file. + * + * Returns: + * This function returns zero if successful. On error it will return a negative + * error value. + **/ +static int +lpfc_debugfs_multixripools_open(struct inode *inode, struct file *file) +{ + struct lpfc_hba *phba = inode->i_private; + struct lpfc_debug *debug; + int rc = -ENOMEM; + + debug = kmalloc(sizeof(*debug), GFP_KERNEL); + if (!debug) + goto out; + + /* Round to page boundary */ + debug->buffer = kzalloc(LPFC_DUMP_MULTIXRIPOOL_SIZE, GFP_KERNEL); + if (!debug->buffer) { + kfree(debug); + goto out; + } + + if (phba->cfg_xri_rebalancing) + debug->len = lpfc_debugfs_multixripools_data( + phba, debug->buffer, LPFC_DUMP_MULTIXRIPOOL_SIZE); + else + debug->len = 0; + + debug->i_private = inode->i_private; + file->private_data = debug; + + rc = 0; +out: + return rc; +} + +/** * lpfc_debugfs_hdwqinfo_open - Open the hdwqinfo debugfs buffer * @inode: The inode pointer that contains a vport pointer. * @file: The file pointer to attach the log output. @@ -2182,6 +2349,75 @@ lpfc_debugfs_dumpDataDif_release(struct inode *inode, struct file *file) return 0; } +/** + * lpfc_debugfs_multixripools_write - Clear multi-XRI pools statistics + * @file: The file pointer to read from. + * @buf: The buffer to copy the user data from. + * @nbytes: The number of bytes to get. + * @ppos: The position in the file to start reading from. + * + * Description: + * This routine clears multi-XRI pools statistics when buf contains "clear". + * + * Return Value: + * It returns the @nbytges passing in from debugfs user space when successful. + * In case of error conditions, it returns proper error code back to the user + * space. + **/ +static ssize_t +lpfc_debugfs_multixripools_write(struct file *file, const char __user *buf, + size_t nbytes, loff_t *ppos) +{ + struct lpfc_debug *debug = file->private_data; + struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private; + char mybuf[64]; + char *pbuf; + u32 i; + u32 hwq_count; + struct lpfc_sli4_hdw_queue *qp; + struct lpfc_multixri_pool *multixri_pool; + + if (nbytes > 64) + nbytes = 64; + + /* Protect copy from user */ + if (!access_ok(buf, nbytes)) + return -EFAULT; + + memset(mybuf, 0, sizeof(mybuf)); + + if (copy_from_user(mybuf, buf, nbytes)) + return -EFAULT; + pbuf = &mybuf[0]; + + if ((strncmp(pbuf, "clear", strlen("clear"))) == 0) { + hwq_count = phba->cfg_hdw_queue; + for (i = 0; i < hwq_count; i++) { + qp = &phba->sli4_hba.hdwq[i]; + multixri_pool = qp->p_multixri_pool; + if (!multixri_pool) + continue; + + qp->empty_io_bufs = 0; + multixri_pool->pbl_empty_count = 0; +#ifdef LPFC_MXP_STAT + multixri_pool->above_limit_count = 0; + multixri_pool->below_limit_count = 0; + multixri_pool->stat_max_hwm = 0; + multixri_pool->local_pbl_hit_count = 0; + multixri_pool->other_pbl_hit_count = 0; + + multixri_pool->stat_pbl_count = 0; + multixri_pool->stat_pvt_count = 0; + multixri_pool->stat_busy_count = 0; + multixri_pool->stat_snapshot_taken = 0; +#endif + } + return strlen(pbuf); + } + + return -EINVAL; +} static int lpfc_debugfs_nvmestat_open(struct inode *inode, struct file *file) @@ -5044,6 +5280,16 @@ static const struct file_operations lpfc_debugfs_op_nodelist = { .release = lpfc_debugfs_release, }; +#undef lpfc_debugfs_op_multixripools +static const struct file_operations lpfc_debugfs_op_multixripools = { + .owner = THIS_MODULE, + .open = lpfc_debugfs_multixripools_open, + .llseek = lpfc_debugfs_lseek, + .read = lpfc_debugfs_read, + .write = lpfc_debugfs_multixripools_write, + .release = lpfc_debugfs_release, +}; + #undef lpfc_debugfs_op_hbqinfo static const struct file_operations lpfc_debugfs_op_hbqinfo = { .owner = THIS_MODULE, @@ -5490,6 +5736,19 @@ lpfc_debugfs_initialize(struct lpfc_vport *vport) atomic_inc(&lpfc_debugfs_hba_count); atomic_set(&phba->debugfs_vport_count, 0); + /* Multi-XRI pools */ + snprintf(name, sizeof(name), "multixripools"); + phba->debug_multixri_pools = + debugfs_create_file(name, S_IFREG | 0644, + phba->hba_debugfs_root, + phba, + &lpfc_debugfs_op_multixripools); + if (!phba->debug_multixri_pools) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, + "0527 Cannot create debugfs multixripools\n"); + goto debug_failed; + } + /* Setup hbqinfo */ snprintf(name, sizeof(name), "hbqinfo"); phba->debug_hbqinfo = @@ -5906,6 +6165,9 @@ lpfc_debugfs_terminate(struct lpfc_vport *vport) if (atomic_read(&phba->debugfs_vport_count) == 0) { + debugfs_remove(phba->debug_multixri_pools); /* multixripools*/ + phba->debug_multixri_pools = NULL; + debugfs_remove(phba->debug_hbqinfo); /* hbqinfo */ phba->debug_hbqinfo = NULL; |