forked from luck/tmp_suning_uos_patched
[SCSI] lpfc 8.3.39: Fixed driver vector mapping to CPU affinity
Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
James Smart
James Bottomley
parent
6a485eb9a9
commit
7bb03bbf1e
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@ -709,6 +709,7 @@ struct lpfc_hba {
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uint32_t cfg_poll_tmo;
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uint32_t cfg_use_msi;
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uint32_t cfg_fcp_imax;
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uint32_t cfg_fcp_cpu_map;
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uint32_t cfg_fcp_wq_count;
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uint32_t cfg_fcp_eq_count;
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uint32_t cfg_fcp_io_channel;
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@ -3799,6 +3799,141 @@ lpfc_fcp_imax_init(struct lpfc_hba *phba, int val)
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static DEVICE_ATTR(lpfc_fcp_imax, S_IRUGO | S_IWUSR,
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lpfc_fcp_imax_show, lpfc_fcp_imax_store);
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/**
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* lpfc_state_show - Display current driver CPU affinity
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* @dev: class converted to a Scsi_host structure.
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* @attr: device attribute, not used.
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* @buf: on return contains text describing the state of the link.
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*
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* Returns: size of formatted string.
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**/
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static ssize_t
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lpfc_fcp_cpu_map_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct Scsi_Host *shost = class_to_shost(dev);
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struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
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struct lpfc_hba *phba = vport->phba;
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struct lpfc_vector_map_info *cpup;
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int idx, len = 0;
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if ((phba->sli_rev != LPFC_SLI_REV4) ||
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(phba->intr_type != MSIX))
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return len;
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switch (phba->cfg_fcp_cpu_map) {
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case 0:
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len += snprintf(buf + len, PAGE_SIZE-len,
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"fcp_cpu_map: No mapping (%d)\n",
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phba->cfg_fcp_cpu_map);
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return len;
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case 1:
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len += snprintf(buf + len, PAGE_SIZE-len,
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"fcp_cpu_map: HBA centric mapping (%d): "
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"%d online CPUs\n",
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phba->cfg_fcp_cpu_map,
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phba->sli4_hba.num_online_cpu);
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break;
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case 2:
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len += snprintf(buf + len, PAGE_SIZE-len,
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"fcp_cpu_map: Driver centric mapping (%d): "
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"%d online CPUs\n",
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phba->cfg_fcp_cpu_map,
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phba->sli4_hba.num_online_cpu);
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break;
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}
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cpup = phba->sli4_hba.cpu_map;
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for (idx = 0; idx < phba->sli4_hba.num_present_cpu; idx++) {
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if (cpup->irq == LPFC_VECTOR_MAP_EMPTY)
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len += snprintf(buf + len, PAGE_SIZE-len,
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"CPU %02d io_chan %02d "
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"physid %d coreid %d\n",
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idx, cpup->channel_id, cpup->phys_id,
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cpup->core_id);
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else
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len += snprintf(buf + len, PAGE_SIZE-len,
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"CPU %02d io_chan %02d "
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"physid %d coreid %d IRQ %d\n",
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idx, cpup->channel_id, cpup->phys_id,
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cpup->core_id, cpup->irq);
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cpup++;
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}
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return len;
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}
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/**
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* lpfc_fcp_cpu_map_store - Change CPU affinity of driver vectors
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* @dev: class device that is converted into a Scsi_host.
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* @attr: device attribute, not used.
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* @buf: one or more lpfc_polling_flags values.
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* @count: not used.
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*
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* Returns:
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* -EINVAL - Not implemented yet.
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**/
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static ssize_t
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lpfc_fcp_cpu_map_store(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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int status = -EINVAL;
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return status;
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}
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/*
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# lpfc_fcp_cpu_map: Defines how to map CPUs to IRQ vectors
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# for the HBA.
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#
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# Value range is [0 to 2]. Default value is LPFC_DRIVER_CPU_MAP (2).
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# 0 - Do not affinitze IRQ vectors
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# 1 - Affintize HBA vectors with respect to each HBA
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# (start with CPU0 for each HBA)
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# 2 - Affintize HBA vectors with respect to the entire driver
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# (round robin thru all CPUs across all HBAs)
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*/
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static int lpfc_fcp_cpu_map = LPFC_DRIVER_CPU_MAP;
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module_param(lpfc_fcp_cpu_map, int, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(lpfc_fcp_cpu_map,
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"Defines how to map CPUs to IRQ vectors per HBA");
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/**
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* lpfc_fcp_cpu_map_init - Set the initial sr-iov virtual function enable
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* @phba: lpfc_hba pointer.
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* @val: link speed value.
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*
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* Description:
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* If val is in a valid range [0-2], then affinitze the adapter's
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* MSIX vectors.
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*
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* Returns:
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* zero if val saved.
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* -EINVAL val out of range
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**/
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static int
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lpfc_fcp_cpu_map_init(struct lpfc_hba *phba, int val)
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{
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if (phba->sli_rev != LPFC_SLI_REV4) {
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phba->cfg_fcp_cpu_map = 0;
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return 0;
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}
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if (val >= LPFC_MIN_CPU_MAP && val <= LPFC_MAX_CPU_MAP) {
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phba->cfg_fcp_cpu_map = val;
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return 0;
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}
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lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
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"3326 fcp_cpu_map: %d out of range, using default\n",
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val);
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phba->cfg_fcp_cpu_map = LPFC_DRIVER_CPU_MAP;
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return 0;
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}
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static DEVICE_ATTR(lpfc_fcp_cpu_map, S_IRUGO | S_IWUSR,
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lpfc_fcp_cpu_map_show, lpfc_fcp_cpu_map_store);
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/*
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# lpfc_fcp_class: Determines FC class to use for the FCP protocol.
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# Value range is [2,3]. Default value is 3.
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@ -4154,6 +4289,7 @@ struct device_attribute *lpfc_hba_attrs[] = {
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&dev_attr_lpfc_poll_tmo,
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&dev_attr_lpfc_use_msi,
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&dev_attr_lpfc_fcp_imax,
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&dev_attr_lpfc_fcp_cpu_map,
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&dev_attr_lpfc_fcp_wq_count,
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&dev_attr_lpfc_fcp_eq_count,
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&dev_attr_lpfc_fcp_io_channel,
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@ -5136,6 +5272,7 @@ lpfc_get_cfgparam(struct lpfc_hba *phba)
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lpfc_enable_rrq_init(phba, lpfc_enable_rrq);
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lpfc_use_msi_init(phba, lpfc_use_msi);
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lpfc_fcp_imax_init(phba, lpfc_fcp_imax);
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lpfc_fcp_cpu_map_init(phba, lpfc_fcp_cpu_map);
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lpfc_fcp_wq_count_init(phba, lpfc_fcp_wq_count);
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lpfc_fcp_eq_count_init(phba, lpfc_fcp_eq_count);
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lpfc_fcp_io_channel_init(phba, lpfc_fcp_io_channel);
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@ -200,6 +200,11 @@ struct lpfc_sli_intf {
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#define LPFC_MAX_IMAX 5000000
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#define LPFC_DEF_IMAX 50000
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#define LPFC_MIN_CPU_MAP 0
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#define LPFC_MAX_CPU_MAP 2
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#define LPFC_HBA_CPU_MAP 1
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#define LPFC_DRIVER_CPU_MAP 2 /* Default */
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/* PORT_CAPABILITIES constants. */
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#define LPFC_MAX_SUPPORTED_PAGES 8
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@ -33,6 +33,7 @@
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#include <linux/slab.h>
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#include <linux/firmware.h>
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#include <linux/miscdevice.h>
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#include <linux/percpu.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_device.h>
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@ -58,6 +59,9 @@ char *_dump_buf_dif;
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unsigned long _dump_buf_dif_order;
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spinlock_t _dump_buf_lock;
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/* Used when mapping IRQ vectors in a driver centric manner */
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uint16_t lpfc_used_cpu[LPFC_MAX_CPU];
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static void lpfc_get_hba_model_desc(struct lpfc_hba *, uint8_t *, uint8_t *);
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static int lpfc_post_rcv_buf(struct lpfc_hba *);
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static int lpfc_sli4_queue_verify(struct lpfc_hba *);
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@ -4861,6 +4865,7 @@ lpfc_sli_driver_resource_unset(struct lpfc_hba *phba)
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static int
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lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
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{
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struct lpfc_vector_map_info *cpup;
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struct lpfc_sli *psli;
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LPFC_MBOXQ_t *mboxq;
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int rc, i, hbq_count, max_buf_size;
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@ -5198,6 +5203,26 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
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goto out_free_fcp_eq_hdl;
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}
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phba->sli4_hba.cpu_map = kzalloc((sizeof(struct lpfc_vector_map_info) *
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phba->sli4_hba.num_present_cpu),
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GFP_KERNEL);
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if (!phba->sli4_hba.cpu_map) {
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lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
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"3327 Failed allocate memory for msi-x "
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"interrupt vector mapping\n");
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rc = -ENOMEM;
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goto out_free_msix;
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}
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/* Initialize io channels for round robin */
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cpup = phba->sli4_hba.cpu_map;
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rc = 0;
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for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
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cpup->channel_id = rc;
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rc++;
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if (rc >= phba->cfg_fcp_io_channel)
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rc = 0;
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}
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/*
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* Enable sr-iov virtual functions if supported and configured
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* through the module parameter.
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@ -5217,6 +5242,8 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
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return 0;
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out_free_msix:
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kfree(phba->sli4_hba.msix_entries);
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out_free_fcp_eq_hdl:
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kfree(phba->sli4_hba.fcp_eq_hdl);
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out_free_fcf_rr_bmask:
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@ -5246,6 +5273,11 @@ lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba)
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{
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struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
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/* Free memory allocated for msi-x interrupt vector to CPU mapping */
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kfree(phba->sli4_hba.cpu_map);
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phba->sli4_hba.num_present_cpu = 0;
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phba->sli4_hba.num_online_cpu = 0;
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/* Free memory allocated for msi-x interrupt vector entries */
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kfree(phba->sli4_hba.msix_entries);
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@ -6792,6 +6824,7 @@ lpfc_sli4_queue_verify(struct lpfc_hba *phba)
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int cfg_fcp_io_channel;
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uint32_t cpu;
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uint32_t i = 0;
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uint32_t j = 0;
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/*
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@ -6802,15 +6835,21 @@ lpfc_sli4_queue_verify(struct lpfc_hba *phba)
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/* Sanity check on HBA EQ parameters */
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cfg_fcp_io_channel = phba->cfg_fcp_io_channel;
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/* It doesn't make sense to have more io channels then CPUs */
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for_each_online_cpu(cpu) {
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i++;
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/* It doesn't make sense to have more io channels then online CPUs */
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for_each_present_cpu(cpu) {
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if (cpu_online(cpu))
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i++;
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j++;
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}
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phba->sli4_hba.num_online_cpu = i;
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phba->sli4_hba.num_present_cpu = j;
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if (i < cfg_fcp_io_channel) {
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lpfc_printf_log(phba,
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KERN_ERR, LOG_INIT,
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"3188 Reducing IO channels to match number of "
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"CPUs: from %d to %d\n", cfg_fcp_io_channel, i);
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"online CPUs: from %d to %d\n",
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cfg_fcp_io_channel, i);
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cfg_fcp_io_channel = i;
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}
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@ -8309,6 +8348,269 @@ lpfc_sli_disable_intr(struct lpfc_hba *phba)
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return;
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}
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/**
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* lpfc_find_next_cpu - Find next available CPU that matches the phys_id
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* @phba: pointer to lpfc hba data structure.
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*
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* Find next available CPU to use for IRQ to CPU affinity.
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*/
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static int
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lpfc_find_next_cpu(struct lpfc_hba *phba, uint32_t phys_id)
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{
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struct lpfc_vector_map_info *cpup;
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int cpu;
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cpup = phba->sli4_hba.cpu_map;
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for (cpu = 0; cpu < phba->sli4_hba.num_present_cpu; cpu++) {
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/* CPU must be online */
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if (cpu_online(cpu)) {
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if ((cpup->irq == LPFC_VECTOR_MAP_EMPTY) &&
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(lpfc_used_cpu[cpu] == LPFC_VECTOR_MAP_EMPTY) &&
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(cpup->phys_id == phys_id)) {
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return cpu;
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}
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}
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cpup++;
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}
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/*
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* If we get here, we have used ALL CPUs for the specific
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* phys_id. Now we need to clear out lpfc_used_cpu and start
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* reusing CPUs.
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*/
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for (cpu = 0; cpu < phba->sli4_hba.num_present_cpu; cpu++) {
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if (lpfc_used_cpu[cpu] == phys_id)
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lpfc_used_cpu[cpu] = LPFC_VECTOR_MAP_EMPTY;
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}
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cpup = phba->sli4_hba.cpu_map;
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for (cpu = 0; cpu < phba->sli4_hba.num_present_cpu; cpu++) {
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/* CPU must be online */
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if (cpu_online(cpu)) {
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if ((cpup->irq == LPFC_VECTOR_MAP_EMPTY) &&
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(cpup->phys_id == phys_id)) {
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return cpu;
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}
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}
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cpup++;
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}
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return LPFC_VECTOR_MAP_EMPTY;
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}
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/**
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* lpfc_sli4_set_affinity - Set affinity for HBA IRQ vectors
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* @phba: pointer to lpfc hba data structure.
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* @vectors: number of HBA vectors
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*
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* Affinitize MSIX IRQ vectors to CPUs. Try to equally spread vector
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* affinization across multple physical CPUs (numa nodes).
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* In addition, this routine will assign an IO channel for each CPU
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* to use when issuing I/Os.
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*/
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static int
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lpfc_sli4_set_affinity(struct lpfc_hba *phba, int vectors)
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{
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int i, idx, saved_chann, used_chann, cpu, phys_id;
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int max_phys_id, num_io_channel, first_cpu;
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struct lpfc_vector_map_info *cpup;
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#ifdef CONFIG_X86
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struct cpuinfo_x86 *cpuinfo;
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#endif
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struct cpumask *mask;
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uint8_t chann[LPFC_FCP_IO_CHAN_MAX+1];
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/* If there is no mapping, just return */
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if (!phba->cfg_fcp_cpu_map)
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return 1;
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/* Init cpu_map array */
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memset(phba->sli4_hba.cpu_map, 0xff,
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(sizeof(struct lpfc_vector_map_info) *
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phba->sli4_hba.num_present_cpu));
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max_phys_id = 0;
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phys_id = 0;
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num_io_channel = 0;
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first_cpu = LPFC_VECTOR_MAP_EMPTY;
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/* Update CPU map with physical id and core id of each CPU */
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cpup = phba->sli4_hba.cpu_map;
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for (cpu = 0; cpu < phba->sli4_hba.num_present_cpu; cpu++) {
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#ifdef CONFIG_X86
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cpuinfo = &cpu_data(cpu);
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cpup->phys_id = cpuinfo->phys_proc_id;
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cpup->core_id = cpuinfo->cpu_core_id;
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#else
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/* No distinction between CPUs for other platforms */
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cpup->phys_id = 0;
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cpup->core_id = 0;
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#endif
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lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
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"3328 CPU physid %d coreid %d\n",
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cpup->phys_id, cpup->core_id);
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if (cpup->phys_id > max_phys_id)
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max_phys_id = cpup->phys_id;
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cpup++;
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}
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/* Now associate the HBA vectors with specific CPUs */
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for (idx = 0; idx < vectors; idx++) {
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cpup = phba->sli4_hba.cpu_map;
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cpu = lpfc_find_next_cpu(phba, phys_id);
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if (cpu == LPFC_VECTOR_MAP_EMPTY) {
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/* Try for all phys_id's */
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for (i = 1; i < max_phys_id; i++) {
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phys_id++;
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if (phys_id > max_phys_id)
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phys_id = 0;
|
||||
cpu = lpfc_find_next_cpu(phba, phys_id);
|
||||
if (cpu == LPFC_VECTOR_MAP_EMPTY)
|
||||
continue;
|
||||
goto found;
|
||||
}
|
||||
|
||||
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
|
||||
"3329 Cannot set affinity:"
|
||||
"Error mapping vector %d (%d)\n",
|
||||
idx, vectors);
|
||||
return 0;
|
||||
}
|
||||
found:
|
||||
cpup += cpu;
|
||||
if (phba->cfg_fcp_cpu_map == LPFC_DRIVER_CPU_MAP)
|
||||
lpfc_used_cpu[cpu] = phys_id;
|
||||
|
||||
/* Associate vector with selected CPU */
|
||||
cpup->irq = phba->sli4_hba.msix_entries[idx].vector;
|
||||
|
||||
/* Associate IO channel with selected CPU */
|
||||
cpup->channel_id = idx;
|
||||
num_io_channel++;
|
||||
|
||||
if (first_cpu == LPFC_VECTOR_MAP_EMPTY)
|
||||
first_cpu = cpu;
|
||||
|
||||
/* Now affinitize to the selected CPU */
|
||||
mask = &cpup->maskbits;
|
||||
cpumask_clear(mask);
|
||||
cpumask_set_cpu(cpu, mask);
|
||||
i = irq_set_affinity_hint(phba->sli4_hba.msix_entries[idx].
|
||||
vector, mask);
|
||||
|
||||
lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
|
||||
"3330 Set Affinity: CPU %d channel %d "
|
||||
"irq %d (%x)\n",
|
||||
cpu, cpup->channel_id,
|
||||
phba->sli4_hba.msix_entries[idx].vector, i);
|
||||
|
||||
/* Spread vector mapping across multple physical CPU nodes */
|
||||
phys_id++;
|
||||
if (phys_id > max_phys_id)
|
||||
phys_id = 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Finally fill in the IO channel for any remaining CPUs.
|
||||
* At this point, all IO channels have been assigned to a specific
|
||||
* MSIx vector, mapped to a specific CPU.
|
||||
* Base the remaining IO channel assigned, to IO channels already
|
||||
* assigned to other CPUs on the same phys_id.
|
||||
*/
|
||||
for (i = 0; i <= max_phys_id; i++) {
|
||||
/*
|
||||
* If there are no io channels already mapped to
|
||||
* this phys_id, just round robin thru the io_channels.
|
||||
* Setup chann[] for round robin.
|
||||
*/
|
||||
for (idx = 0; idx < phba->cfg_fcp_io_channel; idx++)
|
||||
chann[idx] = idx;
|
||||
|
||||
saved_chann = 0;
|
||||
used_chann = 0;
|
||||
|
||||
/*
|
||||
* First build a list of IO channels already assigned
|
||||
* to this phys_id before reassigning the same IO
|
||||
* channels to the remaining CPUs.
|
||||
*/
|
||||
cpup = phba->sli4_hba.cpu_map;
|
||||
cpu = first_cpu;
|
||||
cpup += cpu;
|
||||
for (idx = 0; idx < phba->sli4_hba.num_present_cpu;
|
||||
idx++) {
|
||||
if (cpup->phys_id == i) {
|
||||
/*
|
||||
* Save any IO channels that are
|
||||
* already mapped to this phys_id.
|
||||
*/
|
||||
if (cpup->irq != LPFC_VECTOR_MAP_EMPTY) {
|
||||
chann[saved_chann] =
|
||||
cpup->channel_id;
|
||||
saved_chann++;
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* See if we are using round-robin */
|
||||
if (saved_chann == 0)
|
||||
saved_chann =
|
||||
phba->cfg_fcp_io_channel;
|
||||
|
||||
/* Associate next IO channel with CPU */
|
||||
cpup->channel_id = chann[used_chann];
|
||||
num_io_channel++;
|
||||
used_chann++;
|
||||
if (used_chann == saved_chann)
|
||||
used_chann = 0;
|
||||
|
||||
lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
|
||||
"3331 Set IO_CHANN "
|
||||
"CPU %d channel %d\n",
|
||||
idx, cpup->channel_id);
|
||||
}
|
||||
out:
|
||||
cpu++;
|
||||
if (cpu >= phba->sli4_hba.num_present_cpu) {
|
||||
cpup = phba->sli4_hba.cpu_map;
|
||||
cpu = 0;
|
||||
} else {
|
||||
cpup++;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (phba->sli4_hba.num_online_cpu != phba->sli4_hba.num_present_cpu) {
|
||||
cpup = phba->sli4_hba.cpu_map;
|
||||
for (idx = 0; idx < phba->sli4_hba.num_present_cpu; idx++) {
|
||||
if (cpup->channel_id == LPFC_VECTOR_MAP_EMPTY) {
|
||||
cpup->channel_id = 0;
|
||||
num_io_channel++;
|
||||
|
||||
lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
|
||||
"3332 Assign IO_CHANN "
|
||||
"CPU %d channel %d\n",
|
||||
idx, cpup->channel_id);
|
||||
}
|
||||
cpup++;
|
||||
}
|
||||
}
|
||||
|
||||
/* Sanity check */
|
||||
if (num_io_channel != phba->sli4_hba.num_present_cpu)
|
||||
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
|
||||
"3333 Set affinity mismatch:"
|
||||
"%d chann != %d cpus: %d vactors\n",
|
||||
num_io_channel, phba->sli4_hba.num_present_cpu,
|
||||
vectors);
|
||||
|
||||
phba->cfg_fcp_io_sched = LPFC_FCP_SCHED_BY_CPU;
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* lpfc_sli4_enable_msix - Enable MSI-X interrupt mode to SLI-4 device
|
||||
* @phba: pointer to lpfc hba data structure.
|
||||
|
|
@ -8360,9 +8662,7 @@ lpfc_sli4_enable_msix(struct lpfc_hba *phba)
|
|||
phba->sli4_hba.msix_entries[index].vector,
|
||||
phba->sli4_hba.msix_entries[index].entry);
|
||||
|
||||
/*
|
||||
* Assign MSI-X vectors to interrupt handlers
|
||||
*/
|
||||
/* Assign MSI-X vectors to interrupt handlers */
|
||||
for (index = 0; index < vectors; index++) {
|
||||
memset(&phba->sli4_hba.handler_name[index], 0, 16);
|
||||
sprintf((char *)&phba->sli4_hba.handler_name[index],
|
||||
|
|
@ -8390,6 +8690,8 @@ lpfc_sli4_enable_msix(struct lpfc_hba *phba)
|
|||
phba->cfg_fcp_io_channel, vectors);
|
||||
phba->cfg_fcp_io_channel = vectors;
|
||||
}
|
||||
|
||||
lpfc_sli4_set_affinity(phba, vectors);
|
||||
return rc;
|
||||
|
||||
cfg_fail_out:
|
||||
|
|
@ -10667,6 +10969,7 @@ static struct miscdevice lpfc_mgmt_dev = {
|
|||
static int __init
|
||||
lpfc_init(void)
|
||||
{
|
||||
int cpu;
|
||||
int error = 0;
|
||||
|
||||
printk(LPFC_MODULE_DESC "\n");
|
||||
|
|
@ -10693,6 +10996,11 @@ lpfc_init(void)
|
|||
return -ENOMEM;
|
||||
}
|
||||
}
|
||||
|
||||
/* Initialize in case vector mapping is needed */
|
||||
for (cpu = 0; cpu < LPFC_MAX_CPU; cpu++)
|
||||
lpfc_used_cpu[cpu] = LPFC_VECTOR_MAP_EMPTY;
|
||||
|
||||
error = pci_register_driver(&lpfc_driver);
|
||||
if (error) {
|
||||
fc_release_transport(lpfc_transport_template);
|
||||
|
|
|
|||
|
|
@ -7923,15 +7923,21 @@ lpfc_sli4_bpl2sgl(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq,
|
|||
static inline uint32_t
|
||||
lpfc_sli4_scmd_to_wqidx_distr(struct lpfc_hba *phba)
|
||||
{
|
||||
int i;
|
||||
struct lpfc_vector_map_info *cpup;
|
||||
int chann, cpu;
|
||||
|
||||
if (phba->cfg_fcp_io_sched == LPFC_FCP_SCHED_BY_CPU)
|
||||
i = smp_processor_id();
|
||||
else
|
||||
i = atomic_add_return(1, &phba->fcp_qidx);
|
||||
|
||||
i = (i % phba->cfg_fcp_io_channel);
|
||||
return i;
|
||||
if (phba->cfg_fcp_io_sched == LPFC_FCP_SCHED_BY_CPU) {
|
||||
cpu = smp_processor_id();
|
||||
if (cpu < phba->sli4_hba.num_present_cpu) {
|
||||
cpup = phba->sli4_hba.cpu_map;
|
||||
cpup += cpu;
|
||||
return cpup->channel_id;
|
||||
}
|
||||
chann = cpu;
|
||||
}
|
||||
chann = atomic_add_return(1, &phba->fcp_qidx);
|
||||
chann = (chann % phba->cfg_fcp_io_channel);
|
||||
return chann;
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
|
|||
|
|
@ -435,6 +435,17 @@ struct lpfc_sli4_lnk_info {
|
|||
|
||||
#define LPFC_SLI4_HANDLER_NAME_SZ 16
|
||||
|
||||
/* Used for IRQ vector to CPU mapping */
|
||||
struct lpfc_vector_map_info {
|
||||
uint16_t phys_id;
|
||||
uint16_t core_id;
|
||||
uint16_t irq;
|
||||
uint16_t channel_id;
|
||||
struct cpumask maskbits;
|
||||
};
|
||||
#define LPFC_VECTOR_MAP_EMPTY 0xffff
|
||||
#define LPFC_MAX_CPU 256
|
||||
|
||||
/* SLI4 HBA data structure entries */
|
||||
struct lpfc_sli4_hba {
|
||||
void __iomem *conf_regs_memmap_p; /* Kernel memory mapped address for
|
||||
|
|
@ -568,6 +579,11 @@ struct lpfc_sli4_hba {
|
|||
struct lpfc_iov iov;
|
||||
spinlock_t abts_scsi_buf_list_lock; /* list of aborted SCSI IOs */
|
||||
spinlock_t abts_sgl_list_lock; /* list of aborted els IOs */
|
||||
|
||||
/* CPU to vector mapping information */
|
||||
struct lpfc_vector_map_info *cpu_map;
|
||||
uint16_t num_online_cpu;
|
||||
uint16_t num_present_cpu;
|
||||
};
|
||||
|
||||
enum lpfc_sge_type {
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user