8 Feb
2021
8 Feb
'21
3:57 p.m.
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/