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authorMichael Ellerman <mpe@ellerman.id.au>2016-07-27 22:46:29 +1000
committerMichael Ellerman <mpe@ellerman.id.au>2016-08-01 11:15:04 +1000
commitbfbfc8a43c028fe3c77c00c4368890e004ca268e (patch)
tree1da989af301dbafe5dfc460345a8ecc564c6ec22 /arch/powerpc
parentb92a226e528423b8d249dd09bb450d53361fbfcb (diff)
downloadlinux-bfbfc8a43c028fe3c77c00c4368890e004ca268e.tar.bz2
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 <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/Kconfig.debug9
1 files changed, 9 insertions, 0 deletions
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