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authorChristian Borntraeger <cborntra@de.ibm.com>2006-09-28 16:55:46 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2006-09-28 16:55:46 +0200
commit0efa470363699ecba49e67cc3c75f46b300f98a4 (patch)
treea27ea609d8a45369fa47d016839fc94db8f80cdb /arch/s390/Kconfig
parentd9f7a745d55527d0d41684b22506a86c4381f7f1 (diff)
downloadlwn-0efa470363699ecba49e67cc3c75f46b300f98a4.tar.gz
lwn-0efa470363699ecba49e67cc3c75f46b300f98a4.zip
[S390] config option for z9-109 code generation.
Add a kernel config option for the IBM System z9. This will produce faster code on newer compilers using the -march=z9-109 option. Signed-off-by: Christian Borntraeger <cborntra@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/Kconfig')
-rw-r--r--arch/s390/Kconfig8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index b6b42f9f0d52..f900a516f099 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -153,6 +153,14 @@ config MARCH_Z990
This will be slightly faster but does not work on
older machines such as the z900.
+config MARCH_Z9_109
+ bool "IBM System z9"
+ help
+ Select this to enable optimizations for IBM System z9-109, IBM
+ System z9 Enterprise Class (z9 EC), and IBM System z9 Business
+ Class (z9 BC). The kernel will be slightly faster but will not
+ work on older machines such as the z990, z890, z900, and z800.
+
endchoice
config PACK_STACK