There are two steps to enable each architecture to do lockless reference count update: 1. Define the ARCH_SPINLOCK_REFCOUNT config parameter in its Kconfig file. 2. Add a <asm/spinlock_refcount.h> architecture specific header file. This is done for the x86 architecture to use the generic version available. Signed-off-by: Waiman Long <Waiman.Long@xxxxxx> --- arch/x86/Kconfig | 3 +++ arch/x86/include/asm/spinlock_refcount.h | 1 + 2 files changed, 4 insertions(+), 0 deletions(-) create mode 100644 arch/x86/include/asm/spinlock_refcount.h diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index fe120da..649ed4b 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -253,6 +253,9 @@ config ARCH_CPU_PROBE_RELEASE config ARCH_SUPPORTS_UPROBES def_bool y +config ARCH_SPINLOCK_REFCOUNT + def_bool y + source "init/Kconfig" source "kernel/Kconfig.freezer" diff --git a/arch/x86/include/asm/spinlock_refcount.h b/arch/x86/include/asm/spinlock_refcount.h new file mode 100644 index 0000000..ab6224f --- /dev/null +++ b/arch/x86/include/asm/spinlock_refcount.h @@ -0,0 +1 @@ +#include <asm-generic/spinlock_refcount.h> -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
