From bfbfc8a43c028fe3c77c00c4368890e004ca268e Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Wed, 27 Jul 2016 22:46:29 +1000 Subject: [PATCH] powerpc: Add kconfig option to use jump labels for cpu/mmu_has_feature() Add a kconfig option to control whether we use jump label for the cpu/mmu_has_feature() checks. Currently this does nothing, but we will enabled it in the subsequent patches. Signed-off-by: Michael Ellerman --- arch/powerpc/Kconfig.debug | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug index 171047822b56..36d7e345f599 100644 --- a/arch/powerpc/Kconfig.debug +++ b/arch/powerpc/Kconfig.debug @@ -60,6 +60,15 @@ config CODE_PATCHING_SELFTEST depends on DEBUG_KERNEL default n +config JUMP_LABEL_FEATURE_CHECKS + bool "Enable use of jump label for cpu/mmu_has_feature()" + depends on JUMP_LABEL + default y + help + Selecting this options enables use of jump labels for some internal + feature checks. This should generate more optimal code for those + checks. + config FTR_FIXUP_SELFTEST bool "Run self-tests of the feature-fixup code" depends on DEBUG_KERNEL -- 2.20.1