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(parent: 9a07731) | patch
s390/irq: utilize RCU instead of irq_lock_sparse() in show_msi_interrupt()
authorPingfan Liu <kernelfans@gmail.com>
Fri, 22 Apr 2022 10:02:12 +0000 (18:02 +0800)
committerHeiko Carstens <hca@linux.ibm.com>
Wed, 27 Apr 2022 10:53:34 +0000 (12:53 +0200)
commit6260f6427c944279f8aca108140db900699a30de
treefd36fe1dd1204ba09ac42c14acfe821c09665fdctree | snapshot
parent9a07731702d9e5787770f44d2be0c15742f27e39commit | diff
s390/irq: utilize RCU instead of irq_lock_sparse() in show_msi_interrupt()

As demonstrated by commit 74bdf7815dfb ("genirq: Speedup
show_interrupts()"), irq_desc can be accessed safely in RCU read section.

Hence here resorting to rcu read lock to get rid of irq_lock_sparse().

Signed-off-by: Pingfan Liu <kernelfans@gmail.com>
Link: https://lore.kernel.org/r/20220422100212.22666-1-kernelfans@gmail.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
arch/s390/kernel/irq.c diff | blob | history
Domain: System / Kernel;