Reviewed-by: Murthy Bhat <murthy.b...@pmcs.com>
-----Original Message-----
From: Mahesh Rajashekhara
Sent: Wednesday, March 04, 2015 2:09 PM
To: jbottom...@parallels.com; linux-scsi@vger.kernel.org
Cc: aacr...@pmc-sierra.com; Harry Yang; Achim Leubner; Rajinikanth Pandurangan;
Rich Bono; Mahesh Rajashekhara
Subject: [PATCH 6/7] aacraid: performance improvement changes
Add performance improvement changes.
Signed-off-by: Mahesh Rajashekhara <mahesh.rajashekh...@pmcs.com>
---
drivers/scsi/aacraid/aacraid.h | 6 +++---
drivers/scsi/aacraid/comminit.c | 12 +++++++++++-
drivers/scsi/aacraid/commsup.c | 7 ++-----
drivers/scsi/aacraid/dpcsup.c | 4 ++--
drivers/scsi/aacraid/linit.c | 10 ++++------
drivers/scsi/aacraid/rx.c | 14 +++-----------
drivers/scsi/aacraid/src.c | 5 +----
7 files changed, 26 insertions(+), 32 deletions(-)
diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index a37762e..74a0440 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -12,7 +12,7 @@
* D E F I N E S
*----------------------------------------------------------------------------*/
-#define AAC_MAX_MSIX 32 /* vectors */
+#define AAC_MAX_MSIX 8 /* vectors */
#define AAC_PCI_MSI_ENABLE 0x8000
enum {
@@ -62,7 +62,7 @@ enum {
#define PMC_GLOBAL_INT_BIT0 0x00000001
#ifndef AAC_DRIVER_BUILD
-# define AAC_DRIVER_BUILD 30300
+# define AAC_DRIVER_BUILD 40709
# define AAC_DRIVER_BRANCH "-ms"
#endif
#define MAXIMUM_NUM_CONTAINERS 32
@@ -633,7 +633,7 @@ struct aac_queue {
spinlock_t lockdata; /* Actual lock (used only on
one side of the lock) */
struct list_head cmdq; /* A queue of FIBs which need
to be prcessed by the FS thread. This is */
/* only valid for command
queues which receive entries from the adapter. */
- u32 numpending; /* Number of entries on
outstanding queue. */
+ atomic_t numpending; /* Number of entries on
outstanding queue. */
struct aac_dev * dev; /* Back pointer to adapter
structure */
};
diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c
index c3e13ae..c16043e 100644
--- a/drivers/scsi/aacraid/comminit.c
+++ b/drivers/scsi/aacraid/comminit.c
@@ -181,7 +181,7 @@ static int aac_alloc_comm(struct aac_dev *dev, void
**commaddr, unsigned long co
static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32
*mem, int qsize)
{
- q->numpending = 0;
+ atomic_set(&q->numpending, 0);
q->dev = dev;
init_waitqueue_head(&q->cmdready);
INIT_LIST_HEAD(&q->cmdq);
@@ -510,6 +510,7 @@ static void aac_define_int_mode(struct aac_dev *dev)
{
int i, msi_count;
+ int cpu;
msi_count = i = 0;
/* max. vectors from GET_COMM_PREFERRED_SETTINGS */
@@ -571,6 +572,15 @@ static void aac_define_int_mode(struct aac_dev *dev)
else {
if (dev->max_msix > msi_count)
dev->max_msix = msi_count;
+
+ /* Added to set IRQ affinity */
+ cpu = cpumask_first(cpu_online_mask);
+ cpu = cpumask_next(cpu, cpu_online_mask);
+
+ for (i = 0; i < dev->max_msix; i++) {
+ irq_set_affinity_hint(dev->msixentry[i].vector,
get_cpu_mask(cpu));
+ cpu = cpumask_next(cpu, cpu_online_mask);
+ }
}
dev->vector_cap = (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) /
msi_count;
}
diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index 2bed445..0555023 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -318,7 +318,7 @@ static int aac_get_entry (struct aac_dev * dev, u32 qid,
struct aac_entry **entr
/* Queue is full */
if ((*index + 1) == le32_to_cpu(*(q->headers.consumer))) {
printk(KERN_WARNING "Queue %d full, %u outstanding.\n",
- qid, q->numpending);
+ qid, atomic_read(&q->numpending));
return 0;
} else {
*entry = q->base + *index;
@@ -411,7 +411,6 @@ int aac_fib_send(u16 command, struct fib *fibptr, unsigned
long size,
struct aac_dev * dev = fibptr->dev;
struct hw_fib * hw_fib = fibptr->hw_fib_va;
unsigned long flags = 0;
- unsigned long qflags;
unsigned long mflags = 0;
unsigned long sflags = 0;
@@ -565,9 +564,7 @@ int aac_fib_send(u16 command, struct fib *fibptr, unsigned
long size,
int blink;
if (time_is_before_eq_jiffies(timeout)) {
struct aac_queue * q =
&dev->queues->queue[AdapNormCmdQueue];
- spin_lock_irqsave(q->lock, qflags);
- q->numpending--;
- spin_unlock_irqrestore(q->lock, qflags);
+ atomic_dec(&q->numpending);
if (wait == -1) {
printk(KERN_ERR "aacraid:
aac_fib_send: first asynchronous command timed out.\n"
"Usually a result of a PCI
interrupt routing problem;\n"
diff --git a/drivers/scsi/aacraid/dpcsup.c b/drivers/scsi/aacraid/dpcsup.c
index 2e39466..da9d993 100644
--- a/drivers/scsi/aacraid/dpcsup.c
+++ b/drivers/scsi/aacraid/dpcsup.c
@@ -84,7 +84,7 @@ unsigned int aac_response_normal(struct aac_queue * q)
* continue. The caller has already been notified that
* the fib timed out.
*/
- dev->queues->queue[AdapNormCmdQueue].numpending--;
+ atomic_dec(&dev->queues->queue[AdapNormCmdQueue].numpending);
if (unlikely(fib->flags & FIB_CONTEXT_FLAG_TIMED_OUT)) {
spin_unlock_irqrestore(q->lock, flags);
@@ -354,7 +354,7 @@ unsigned int aac_intr_normal(struct aac_dev *dev, u32 index,
* continue. The caller has already been notified that
* the fib timed out.
*/
- dev->queues->queue[AdapNormCmdQueue].numpending--;
+ atomic_dec(&dev->queues->queue[AdapNormCmdQueue].numpending);
if (unlikely(fib->flags & FIB_CONTEXT_FLAG_TIMED_OUT)) {
aac_fib_complete(fib);
diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 4c5ba9e..e0f9f81 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -250,16 +250,14 @@ static struct aac_driver_ident aac_drivers[] = {
*
* TODO: unify with aac_scsi_cmd().
*/
-
-static int aac_queuecommand_lck(struct scsi_cmnd *cmd, void (*done)(struct
scsi_cmnd *))
+static int aac_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmd)
{
- cmd->scsi_done = done;
+ int r = 0;
cmd->SCp.phase = AAC_OWNER_LOWLEVEL;
- return (aac_scsi_cmd(cmd) ? FAILED : 0);
+ r = (aac_scsi_cmd(cmd) ? FAILED : 0);
+ return r;
}
-static DEF_SCSI_QCMD(aac_queuecommand)
-
/**
* aac_info - Returns the host adapter name
* @shost: Scsi host to report on
diff --git a/drivers/scsi/aacraid/rx.c b/drivers/scsi/aacraid/rx.c
index 5c6a870..9570612 100644
--- a/drivers/scsi/aacraid/rx.c
+++ b/drivers/scsi/aacraid/rx.c
@@ -400,16 +400,13 @@ int aac_rx_deliver_producer(struct fib * fib)
{
struct aac_dev *dev = fib->dev;
struct aac_queue *q = &dev->queues->queue[AdapNormCmdQueue];
- unsigned long qflags;
u32 Index;
unsigned long nointr = 0;
- spin_lock_irqsave(q->lock, qflags);
aac_queue_get( dev, &Index, AdapNormCmdQueue, fib->hw_fib_va, 1, fib,
&nointr);
- q->numpending++;
+ atomic_inc(&q->numpending);
*(q->headers.producer) = cpu_to_le32(Index + 1);
- spin_unlock_irqrestore(q->lock, qflags);
if (!(nointr & aac_config.irq_mod))
aac_adapter_notify(dev, AdapNormCmdQueue);
@@ -426,15 +423,12 @@ static int aac_rx_deliver_message(struct fib * fib)
{
struct aac_dev *dev = fib->dev;
struct aac_queue *q = &dev->queues->queue[AdapNormCmdQueue];
- unsigned long qflags;
u32 Index;
u64 addr;
volatile void __iomem *device;
unsigned long count = 10000000L; /* 50 seconds */
- spin_lock_irqsave(q->lock, qflags);
- q->numpending++;
- spin_unlock_irqrestore(q->lock, qflags);
+ atomic_inc(&q->numpending);
for(;;) {
Index = rx_readl(dev, MUnit.InboundQueue);
if (unlikely(Index == 0xFFFFFFFFL))
@@ -442,9 +436,7 @@ static int aac_rx_deliver_message(struct fib * fib)
if (likely(Index != 0xFFFFFFFFL))
break;
if (--count == 0) {
- spin_lock_irqsave(q->lock, qflags);
- q->numpending--;
- spin_unlock_irqrestore(q->lock, qflags);
+ atomic_dec(&q->numpending);
return -ETIMEDOUT;
}
udelay(5);
diff --git a/drivers/scsi/aacraid/src.c b/drivers/scsi/aacraid/src.c
index 82ff025..bde26a2 100644
--- a/drivers/scsi/aacraid/src.c
+++ b/drivers/scsi/aacraid/src.c
@@ -433,15 +433,12 @@ static int aac_src_deliver_message(struct fib *fib)
{
struct aac_dev *dev = fib->dev;
struct aac_queue *q = &dev->queues->queue[AdapNormCmdQueue];
- unsigned long qflags;
u32 fibsize;
dma_addr_t address;
struct aac_fib_xporthdr *pFibX;
u16 hdr_size = le16_to_cpu(fib->hw_fib_va->header.Size);
- spin_lock_irqsave(q->lock, qflags);
- q->numpending++;
- spin_unlock_irqrestore(q->lock, qflags);
+ atomic_inc(&q->numpending);
if (dev->msi_enabled && fib->hw_fib_va->header.Command != AifRequest &&
dev->max_msix > 1) {
--
1.7.7.3
--
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