From c9cf55285e87ac423c45d9efca750d3f50234d10 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Tue, 27 Jun 2006 02:53:52 -0700 Subject: [PATCH] add poison.h and patch primary users Localize poison values into one header file for better documentation and easier/quicker debugging and so that the same values won't be used for multiple purposes. Use these constants in core arch., mm, driver, and fs code. Signed-off-by: Randy Dunlap Acked-by: Matt Mackall Cc: Paul Mackerras Cc: Benjamin Herrenschmidt Cc: "David S. Miller" Cc: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/i386/mm/init.c | 3 ++- arch/powerpc/mm/init_64.c | 3 ++- arch/sparc64/mm/init.c | 3 ++- arch/x86_64/mm/init.c | 7 +++++-- 4 files changed, 11 insertions(+), 5 deletions(-) (limited to 'arch') diff --git a/arch/i386/mm/init.c b/arch/i386/mm/init.c index 4685925..f84b16e 100644 --- a/arch/i386/mm/init.c +++ b/arch/i386/mm/init.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include #include @@ -753,7 +754,7 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end) for (addr = begin; addr < end; addr += PAGE_SIZE) { ClearPageReserved(virt_to_page(addr)); init_page_count(virt_to_page(addr)); - memset((void *)addr, 0xcc, PAGE_SIZE); + memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE); free_page(addr); totalram_pages++; } diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c index 9e30f96..d454caa 100644 --- a/arch/powerpc/mm/init_64.c +++ b/arch/powerpc/mm/init_64.c @@ -41,6 +41,7 @@ #include #include #include +#include #include #include @@ -90,7 +91,7 @@ void free_initmem(void) addr = (unsigned long)__init_begin; for (; addr < (unsigned long)__init_end; addr += PAGE_SIZE) { - memset((void *)addr, 0xcc, PAGE_SIZE); + memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE); ClearPageReserved(virt_to_page(addr)); init_page_count(virt_to_page(addr)); free_page(addr); diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c index 5c2bcf3..cb75a27 100644 --- a/arch/sparc64/mm/init.c +++ b/arch/sparc64/mm/init.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include #include @@ -1520,7 +1521,7 @@ void free_initmem(void) page = (addr + ((unsigned long) __va(kern_base)) - ((unsigned long) KERNBASE)); - memset((void *)addr, 0xcc, PAGE_SIZE); + memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE); p = virt_to_page(page); ClearPageReserved(p); diff --git a/arch/x86_64/mm/init.c b/arch/x86_64/mm/init.c index 51fbf3e..95bd232 100644 --- a/arch/x86_64/mm/init.c +++ b/arch/x86_64/mm/init.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include #include @@ -660,7 +661,8 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end) for (addr = begin; addr < end; addr += PAGE_SIZE) { ClearPageReserved(virt_to_page(addr)); init_page_count(virt_to_page(addr)); - memset((void *)(addr & ~(PAGE_SIZE-1)), 0xcc, PAGE_SIZE); + memset((void *)(addr & ~(PAGE_SIZE-1)), + POISON_FREE_INITMEM, PAGE_SIZE); free_page(addr); totalram_pages++; } @@ -668,7 +670,8 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end) void free_initmem(void) { - memset(__initdata_begin, 0xba, __initdata_end - __initdata_begin); + memset(__initdata_begin, POISON_FREE_INITDATA, + __initdata_end - __initdata_begin); free_init_pages("unused kernel memory", (unsigned long)(&__init_begin), (unsigned long)(&__init_end)); -- cgit v1.1