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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Browse Source 
Pull SCSI fixes from James Bottomley:
 "Two driver fixes (ibmvfc, iscsi_tcp) and a USB fix for devices that
  give the wrong return to Read Capacity and cause a huge log spew.

  The remaining five patches all try to fix commit 84676c1f21
  ("genirq/affinity: assign vectors to all possible CPUs") which broke
  the non-mq I/O path"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: iscsi_tcp: set BDI_CAP_STABLE_WRITES when data digest enabled
  scsi: sd: Remember that READ CAPACITY(16) succeeded
  scsi: ibmvfc: Avoid unnecessary port relogin
  scsi: virtio_scsi: unify scsi_host_template
  scsi: virtio_scsi: fix IO hang caused by automatic irq vector affinity
  scsi: core: introduce force_blk_mq
  scsi: megaraid_sas: fix selection of reply queue
  scsi: hpsa: fix selection of reply queue
This commit is contained in:
Linus Torvalds
2018-03-27 14:11:46 -10:00
parent 3eb2ce825e 89d0c80439
commit fd9adc402b
11 changed files with 128 additions and 147 deletions
Download Patch File Download Diff File Expand all files Collapse all files

73
drivers/scsi/hpsa.c
View File

@@ -1045,11 +1045,7 @@ static void set_performant_mode(struct ctlr_info *h, struct CommandList *c,
c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1);
if (unlikely(!h->msix_vectors))
return;
if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
c->Header.ReplyQueue =
raw_smp_processor_id() % h->nreply_queues;
else
c->Header.ReplyQueue = reply_queue % h->nreply_queues;
c->Header.ReplyQueue = reply_queue;
}
}
@@ -1063,10 +1059,7 @@ static void set_ioaccel1_performant_mode(struct ctlr_info *h,
* Tell the controller to post the reply to the queue for this
* processor. This seems to give the best I/O throughput.
*/
if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
cp->ReplyQueue = smp_processor_id() % h->nreply_queues;
else
cp->ReplyQueue = reply_queue % h->nreply_queues;
cp->ReplyQueue = reply_queue;
/*
* Set the bits in the address sent down to include:
* - performant mode bit (bit 0)
@@ -1087,10 +1080,7 @@ static void set_ioaccel2_tmf_performant_mode(struct ctlr_info *h,
/* Tell the controller to post the reply to the queue for this
* processor. This seems to give the best I/O throughput.
*/
if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
cp->reply_queue = smp_processor_id() % h->nreply_queues;
else
cp->reply_queue = reply_queue % h->nreply_queues;
cp->reply_queue = reply_queue;
/* Set the bits in the address sent down to include:
* - performant mode bit not used in ioaccel mode 2
* - pull count (bits 0-3)
@@ -1109,10 +1099,7 @@ static void set_ioaccel2_performant_mode(struct ctlr_info *h,
* Tell the controller to post the reply to the queue for this
* processor. This seems to give the best I/O throughput.
*/
if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
cp->reply_queue = smp_processor_id() % h->nreply_queues;
else
cp->reply_queue = reply_queue % h->nreply_queues;
cp->reply_queue = reply_queue;
/*
* Set the bits in the address sent down to include:
* - performant mode bit not used in ioaccel mode 2
@@ -1157,6 +1144,8 @@ static void __enqueue_cmd_and_start_io(struct ctlr_info *h,
{
dial_down_lockup_detection_during_fw_flash(h, c);
atomic_inc(&h->commands_outstanding);
reply_queue = h->reply_map[raw_smp_processor_id()];
switch (c->cmd_type) {
case CMD_IOACCEL1:
set_ioaccel1_performant_mode(h, c, reply_queue);
@@ -7376,6 +7365,26 @@ static void hpsa_disable_interrupt_mode(struct ctlr_info *h)
h->msix_vectors = 0;
}
static void hpsa_setup_reply_map(struct ctlr_info *h)
{
const struct cpumask *mask;
unsigned int queue, cpu;
for (queue = 0; queue < h->msix_vectors; queue++) {
mask = pci_irq_get_affinity(h->pdev, queue);
if (!mask)
goto fallback;
for_each_cpu(cpu, mask)
h->reply_map[cpu] = queue;
}
return;
fallback:
for_each_possible_cpu(cpu)
h->reply_map[cpu] = 0;
}
/* If MSI/MSI-X is supported by the kernel we will try to enable it on
* controllers that are capable. If not, we use legacy INTx mode.
*/
@@ -7771,6 +7780,10 @@ static int hpsa_pci_init(struct ctlr_info *h)
err = hpsa_interrupt_mode(h);
if (err)
goto clean1;
/* setup mapping between CPU and reply queue */
hpsa_setup_reply_map(h);
err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr);
if (err)
goto clean2; /* intmode+region, pci */
@@ -8480,6 +8493,28 @@ static struct workqueue_struct *hpsa_create_controller_wq(struct ctlr_info *h,
return wq;
}
static void hpda_free_ctlr_info(struct ctlr_info *h)
{
kfree(h->reply_map);
kfree(h);
}
static struct ctlr_info *hpda_alloc_ctlr_info(void)
{
struct ctlr_info *h;
h = kzalloc(sizeof(*h), GFP_KERNEL);
if (!h)
return NULL;
h->reply_map = kzalloc(sizeof(*h->reply_map) * nr_cpu_ids, GFP_KERNEL);
if (!h->reply_map) {
kfree(h);
return NULL;
}
return h;
}
static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
int dac, rc;
@@ -8517,7 +8552,7 @@ reinit_after_soft_reset:
* the driver. See comments in hpsa.h for more info.
*/
BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT);
h = kzalloc(sizeof(*h), GFP_KERNEL);
h = hpda_alloc_ctlr_info();
if (!h) {
dev_err(&pdev->dev, "Failed to allocate controller head\n");
return -ENOMEM;
@@ -8916,7 +8951,7 @@ static void hpsa_remove_one(struct pci_dev *pdev)
h->lockup_detected = NULL; /* init_one 2 */
/* (void) pci_disable_pcie_error_reporting(pdev); */ /* init_one 1 */
kfree(h); /* init_one 1 */
hpda_free_ctlr_info(h); /* init_one 1 */
}
static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev,