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Commit b4645ffc authored by Christophe Leroy's avatar Christophe Leroy Committed by Michael Ellerman
Browse files

powerpc/64: don't select ARCH_HAS_SCALED_CPUTIME on book3E 



Book3E doesn't have SPRN_SPURR/SPRN_PURR.

Activating ARCH_HAS_SCALED_CPUTIME is just wasting CPU time.

Signed-off-by: default avatarChristophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://github.com/linuxppc/issues/issues/171
Link: https://lore.kernel.org/r/a8b567c569aa521a7cf1beb061d43d79070e850c.1566492229.git.christophe.leroy@c-s.fr
parent d8f0e0b0

arch/powerpc/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -133,7 +133,7 @@ config PPC 
	select ARCH_HAS_PTE_DEVMAP		if PPC_BOOK3S_64

	select ARCH_HAS_PTE_SPECIAL

	select ARCH_HAS_MEMBARRIER_CALLBACKS

	select ARCH_HAS_SCALED_CPUTIME		if VIRT_CPU_ACCOUNTING_NATIVE && PPC64

	select ARCH_HAS_SCALED_CPUTIME		if VIRT_CPU_ACCOUNTING_NATIVE && PPC_BOOK3S_64

	select ARCH_HAS_STRICT_KERNEL_RWX	if ((PPC_BOOK3S_64 || PPC32) && !RELOCATABLE && !HIBERNATION)

	select ARCH_HAS_TICK_BROADCAST		if GENERIC_CLOCKEVENTS_BROADCAST

	select ARCH_HAS_UACCESS_FLUSHCACHE