powerpc: Handle simultaneous interrupts at once

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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>

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Christophe Leroy 2017-03-16 09:55:45 +01:00 • committed by Michael Ellerman

parent 3c29b60388

commit 45cb08f479

1 changed files with 5 additions and 1 deletions

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arch/powerpc/kernel/irq.c

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