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authorRandy Dunlap <rdunlap@xenotime.net>2006-06-27 02:53:52 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-27 17:32:38 -0700
commitc9cf55285e87ac423c45d9efca750d3f50234d10 (patch)
treed46f3e90fbb38115c25b3315f6280ad65f83a14f /arch
parente6e5494cb23d1933735ee47cc674ffe1c4afed6f (diff)
[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 <rdunlap@xenotime.net> Acked-by: Matt Mackall <mpm@selenic.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/i386/mm/init.c3
-rw-r--r--arch/powerpc/mm/init_64.c3
-rw-r--r--arch/sparc64/mm/init.c3
-rw-r--r--arch/x86_64/mm/init.c7
4 files changed, 11 insertions, 5 deletions
diff --git a/arch/i386/mm/init.c b/arch/i386/mm/init.c
index 468592531793..f84b16e007ff 100644
--- a/arch/i386/mm/init.c
+++ b/arch/i386/mm/init.c
@@ -23,6 +23,7 @@
#include <linux/init.h>
#include <linux/highmem.h>
#include <linux/pagemap.h>
+#include <linux/poison.h>
#include <linux/bootmem.h>
#include <linux/slab.h>
#include <linux/proc_fs.h>
@@ -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 9e30f968c184..d454caada265 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -41,6 +41,7 @@
#include <linux/idr.h>
#include <linux/nodemask.h>
#include <linux/module.h>
+#include <linux/poison.h>
#include <asm/pgalloc.h>
#include <asm/page.h>
@@ -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 5c2bcf354ce6..cb75a27adb51 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -18,6 +18,7 @@
#include <linux/initrd.h>
#include <linux/swap.h>
#include <linux/pagemap.h>
+#include <linux/poison.h>
#include <linux/fs.h>
#include <linux/seq_file.h>
#include <linux/kprobes.h>
@@ -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 51fbf3eddf13..95bd232ff0cf 100644
--- a/arch/x86_64/mm/init.c
+++ b/arch/x86_64/mm/init.c
@@ -23,6 +23,7 @@
#include <linux/bootmem.h>
#include <linux/proc_fs.h>
#include <linux/pci.h>
+#include <linux/poison.h>
#include <linux/dma-mapping.h>
#include <linux/module.h>
#include <linux/memory_hotplug.h>
@@ -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));