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(parent: 3c29b60) | patch
powerpc: Handle simultaneous interrupts at once
authorChristophe Leroy <christophe.leroy@c-s.fr>
Thu, 16 Mar 2017 08:55:45 +0000 (09:55 +0100)
committerMichael Ellerman <mpe@ellerman.id.au>
Fri, 2 Jun 2017 09:20:44 +0000 (19:20 +1000)
commit45cb08f4791ce6a15c54598b4cb73db4b4b8294f
treee2bcbc9d4375cfa58ea53996b93443021870dd5dtree | snapshot (tar.gz zip)
parent3c29b6038828c1f4c9ecbfec14d4fc5e25f1c947commit | diff
powerpc: Handle simultaneous interrupts at once

It often happens to have simultaneous interrupts, for instance
when having double Ethernet attachment. With the current
implementation, we suffer the cost of kernel entry/exit for each
interrupt.

This patch introduces a loop in __do_irq() to handle all interrupts
at once before returning.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/kernel/irq.c diff | blob | blame | history