powerpc/64: Improve inline asm in arch_local_irq_disable

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arch_local_irq_disable is implemented strangely, with a temporary
output register being set to the desired soft_enabled value via an
immediate input, which is then used to store to memory. This is not
required, the immediate can be specified directly as a register input.

For simple cases at least, assembly is unchanged except register
mapping.

Reviewed-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Nicholas Piggin 2017-12-20 09:25:43 +05:30 • committed by Michael Ellerman

parent c2e480ba82

commit 9f83e00f4c

1 changed files with 5 additions and 5 deletions

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arch/powerpc/include/asm/hw_irq.h

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