Re: [PATCH] ppc: Add support for bigger page sizes than 4KB on PPC44x
From: Yuri Tikhonov <hidden>
Date: 2007-04-25 18:33:53
Subsystem:
the rest · Maintainer:
Linus Torvalds
The patch replaces the CONFIG_PPC_PAGE_SHIFT integer option with choice of three boolean options Signed-off-by: Yuri Tikhonov [off-list ref] --
diff --git a/arch/ppc/Kconfig b/arch/ppc/Kconfig
index 72af523..5eb58dc 100644
--- a/arch/ppc/Kconfig
+++ b/arch/ppc/Kconfig@@ -1201,15 +1201,24 @@ config SECCOMP If unsure, say Y. Only embedded should say N here. -config PPC_PAGE_SHIFT - int "Page size (12=>4KB; 14=>16KB; 16=>64KB)" if 44x - default "12" - range 12 16 - help +choice + prompt "Page size" + default PPC_PAGE_4K + ---help--- The PAGE_SIZE definition. Increasing the page size may improve the system performance in some dedicated cases. - If unsure, set it to 12 (4KB). + If unsure, set it to 4 KB. + +config PPC_PAGE_4K + bool "4 KB" + +config PPC_PAGE_16K + bool "16 KB" if 44x + +config PPC_PAGE_64K + bool "64 KB" if 44x +endchoice endmenu
diff --git a/include/asm-ppc/page.h b/include/asm-ppc/page.h
index 0b8f354..f46712e 100644
--- a/include/asm-ppc/page.h
+++ b/include/asm-ppc/page.h@@ -4,7 +4,13 @@ #include <asm/asm-compat.h> /* PAGE_SHIFT determines the page size */ -#define PAGE_SHIFT CONFIG_PPC_PAGE_SHIFT +#if defined(CONFIG_PPC_PAGE_4K) +#define PAGE_SHIFT 12 +#elif defined(CONFIG_PPC_PAGE_16K) +#define PAGE_SHIFT 14 +#elif defined(CONFIG_PPC_PAGE_64K) +#define PAGE_SHIFT 16 +#endif #define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT) /*