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author | Ingo Molnar <mingo@elte.hu> | 2008-07-26 11:26:19 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-07-26 11:26:19 +0200 |
commit | 88bef5a4074e0568cf54df410f41065c06694d8a (patch) | |
tree | bc4d59f57ce315bcb16dad5491ab9983ab122d8a /arch/Kconfig | |
parent | 054a3fd824705543322d787893de9f3755151517 (diff) | |
parent | 024e8ac04453b3525448c31ef39848cf675ba6db (diff) |
Merge branch 'linus' into x86/urgent
Diffstat (limited to 'arch/Kconfig')
-rw-r--r-- | arch/Kconfig | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index ad89a33d8c6..b0fabfa864f 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -27,10 +27,32 @@ config KPROBES for kernel debugging, non-intrusive instrumentation and testing. If in doubt, say "N". +config HAVE_EFFICIENT_UNALIGNED_ACCESS + def_bool n + help + Some architectures are unable to perform unaligned accesses + without the use of get_unaligned/put_unaligned. Others are + unable to perform such accesses efficiently (e.g. trap on + unaligned access and require fixing it up in the exception + handler.) + + This symbol should be selected by an architecture if it can + perform unaligned accesses efficiently to allow different + code paths to be selected for these cases. Some network + drivers, for example, could opt to not fix up alignment + problems with received packets if doing so would not help + much. + + See Documentation/unaligned-memory-access.txt for more + information on the topic of unaligned memory accesses. + config KRETPROBES def_bool y depends on KPROBES && HAVE_KRETPROBES +config HAVE_IOREMAP_PROT + def_bool n + config HAVE_KPROBES def_bool n @@ -42,3 +64,10 @@ config HAVE_DMA_ATTRS config USE_GENERIC_SMP_HELPERS def_bool n + +config HAVE_CLK + def_bool n + help + The <linux/clk.h> calls support software clock gating and + thus are a key power management tool on many systems. + |