* [PATCH for-next] RDMA/pvrdma: Replace spin_lock_irqsave with spin_lock in hard IRQ
@ 2021-02-05 8:37 Weihang Li
2021-02-05 16:04 ` Jason Gunthorpe
0 siblings, 1 reply; 2+ messages in thread
From: Weihang Li @ 2021-02-05 8:37 UTC (permalink / raw)
To: dledford, jgg, aditr, pv-drivers; +Cc: leon, linux-rdma, linuxarm
There is no need to do irqsave and irqrestore in context of hard IRQ.
Signed-off-by: Weihang Li <liweihang@huawei.com>
---
drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c
index 00a3309..4b6019e 100644
--- a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c
+++ b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c
@@ -474,7 +474,6 @@ static irqreturn_t pvrdma_intrx_handler(int irq, void *dev_id)
int ring_slots = (dev->dsr->cq_ring_pages.num_pages - 1) * PAGE_SIZE /
sizeof(struct pvrdma_cqne);
unsigned int head;
- unsigned long flags;
dev_dbg(&dev->pdev->dev, "interrupt x (completion) handler\n");
@@ -483,11 +482,11 @@ static irqreturn_t pvrdma_intrx_handler(int irq, void *dev_id)
struct pvrdma_cq *cq;
cqne = get_cqne(dev, head);
- spin_lock_irqsave(&dev->cq_tbl_lock, flags);
+ spin_lock(&dev->cq_tbl_lock);
cq = dev->cq_tbl[cqne->info % dev->dsr->caps.max_cq];
if (cq)
refcount_inc(&cq->refcnt);
- spin_unlock_irqrestore(&dev->cq_tbl_lock, flags);
+ spin_unlock(&dev->cq_tbl_lock);
if (cq && cq->ibcq.comp_handler)
cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context);
--
2.8.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH for-next] RDMA/pvrdma: Replace spin_lock_irqsave with spin_lock in hard IRQ
2021-02-05 8:37 [PATCH for-next] RDMA/pvrdma: Replace spin_lock_irqsave with spin_lock in hard IRQ Weihang Li
@ 2021-02-05 16:04 ` Jason Gunthorpe
0 siblings, 0 replies; 2+ messages in thread
From: Jason Gunthorpe @ 2021-02-05 16:04 UTC (permalink / raw)
To: Weihang Li; +Cc: dledford, aditr, pv-drivers, leon, linux-rdma, linuxarm
On Fri, Feb 05, 2021 at 04:37:58PM +0800, Weihang Li wrote:
> There is no need to do irqsave and irqrestore in context of hard IRQ.
>
> Signed-off-by: Weihang Li <liweihang@huawei.com>
> ---
> drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)
Applied to for-next, thanks
Jason
^ permalink raw reply [flat|nested] 2+ messages in thread
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2021-02-05 8:37 [PATCH for-next] RDMA/pvrdma: Replace spin_lock_irqsave with spin_lock in hard IRQ Weihang Li
2021-02-05 16:04 ` Jason Gunthorpe
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