powerpc: Create msr_check_and_{set,clear}()

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Create helper functions to set and clear MSR bits after first
checking if they are already set. Grouping them will make it
easy to avoid the MSR writes in a subsequent optimisation.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Anton Blanchard 2015-10-29 11:44:04 +11:00 • committed by Michael Ellerman

parent 1552cd703c

commit a0e72cf12b

1 changed files with 52 additions and 55 deletions

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arch/powerpc/kernel/process.c

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