From 4156153c4daddf12dd386016f96a947a01e93bf4 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Thu, 12 Jan 2012 17:17:30 -0800 Subject: mm,x86,um: move CMPXCHG_LOCAL config option Move CMPXCHG_LOCAL and rename it to HAVE_CMPXCHG_LOCAL so architectures can simply select the option if it is supported. Signed-off-by: Heiko Carstens Acked-by: Christoph Lameter Cc: Pekka Enberg Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/Kconfig | 3 +++ arch/x86/Kconfig | 1 + arch/x86/Kconfig.cpu | 3 --- arch/x86/um/Kconfig | 4 ---- mm/vmstat.c | 2 +- 5 files changed, 5 insertions(+), 8 deletions(-) diff --git a/arch/Kconfig b/arch/Kconfig index a2c5c077c32d..22182a8cc62c 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -193,4 +193,7 @@ config HAVE_ALIGNED_STRUCT_PAGE on a struct page for better performance. However selecting this might increase the size of a struct page by a word. +config HAVE_CMPXCHG_LOCAL + bool + source "kernel/gcov/Kconfig" diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 5201a2c27239..59717fd17bc7 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -61,6 +61,7 @@ config X86 select HAVE_PERF_EVENTS_NMI select ANON_INODES select HAVE_ALIGNED_STRUCT_PAGE if SLUB && !M386 + select HAVE_CMPXCHG_LOCAL if !M386 select HAVE_ARCH_KMEMCHECK select HAVE_USER_RETURN_NOTIFIER select ARCH_BINFMT_ELF_RANDOMIZE_PIE diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu index e3ca7e0d858c..99d2ab8b7795 100644 --- a/arch/x86/Kconfig.cpu +++ b/arch/x86/Kconfig.cpu @@ -309,9 +309,6 @@ config X86_INTERNODE_CACHE_SHIFT config X86_CMPXCHG def_bool X86_64 || (X86_32 && !M386) -config CMPXCHG_LOCAL - def_bool X86_64 || (X86_32 && !M386) - config CMPXCHG_DOUBLE def_bool y diff --git a/arch/x86/um/Kconfig b/arch/x86/um/Kconfig index 1d97bd84b6fb..a62bfc66239e 100644 --- a/arch/x86/um/Kconfig +++ b/arch/x86/um/Kconfig @@ -6,10 +6,6 @@ menu "UML-specific options" menu "Host processor type and features" -config CMPXCHG_LOCAL - bool - default n - config CMPXCHG_DOUBLE bool default n diff --git a/mm/vmstat.c b/mm/vmstat.c index 8fd603b1665e..f600557a7659 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -295,7 +295,7 @@ void __dec_zone_page_state(struct page *page, enum zone_stat_item item) } EXPORT_SYMBOL(__dec_zone_page_state); -#ifdef CONFIG_CMPXCHG_LOCAL +#ifdef CONFIG_HAVE_CMPXCHG_LOCAL /* * If we have cmpxchg_local support then we do not need to incur the overhead * that comes with local_irq_save/restore if we use this_cpu_cmpxchg. -- cgit v1.2.3