Messages in this thread Patch in this message | | | Date | Thu, 28 Sep 2006 15:09:04 +0200 | From | Martin Schwidefsky <> | Subject | [S390] config option for z9-109 code generation. |
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From: Christian Borntraeger <cborntra@de.ibm.com>
[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> ---
arch/s390/Kconfig | 8 ++++++++ arch/s390/Makefile | 1 + 2 files changed, 9 insertions(+)
diff -urpN linux-2.6/arch/s390/Kconfig linux-2.6-patched/arch/s390/Kconfig --- linux-2.6/arch/s390/Kconfig 2006-09-28 14:58:55.000000000 +0200 +++ linux-2.6-patched/arch/s390/Kconfig 2006-09-28 14:58:55.000000000 +0200 @@ -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 diff -urpN linux-2.6/arch/s390/Makefile linux-2.6-patched/arch/s390/Makefile --- linux-2.6/arch/s390/Makefile 2006-09-20 05:42:06.000000000 +0200 +++ linux-2.6-patched/arch/s390/Makefile 2006-09-28 14:58:55.000000000 +0200 @@ -33,6 +33,7 @@ endif cflags-$(CONFIG_MARCH_G5) += $(call cc-option,-march=g5) cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900) cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990) +cflags-$(CONFIG_MARCH_Z9_109) += $(call cc-option,-march=z9-109) # # Prevent tail-call optimizations, to get clearer backtraces: - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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