| Date | Mon, 8 Feb 2021 18:57:12 +1100 (AEDT) | From | Finn Thain <> | Subject | Re: [PATCH for-next 00/32] spin lock usage optimization for SCSI drivers |
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On Sun, 7 Feb 2021, Xiaofei Tan wrote:
> Replace spin_lock_irqsave with spin_lock in hard IRQ of SCSI drivers. > There are no function changes, but may speed up if interrupt happen too > often.
This change doesn't necessarily work on platforms that support nested interrupts.
Were you able to measure any benefit from this change on some other platform?
Please see also, https://lore.kernel.org/linux-scsi/89c5cb05cb844939ae684db0077f675f@h3c.com/
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