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x86: rename pat_wc_enabled to pat_enabled

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BTW, what does pat_wc_enabled stand for? Does it mean
"write-combining"?

Currently it is used to globally switch on or off PAT support.
Thus I renamed it to pat_enabled.
I think this increases readability (and hope that I didn't miss
something).

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Andreas Herrmann
2008-06-10 16:06:21 +02:00
committed by Ingo Molnar
parent cd7a4e936d
commit 499f8f84b8
5 changed files with 15 additions and 15 deletions
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16
arch/x86/mm/pat.c
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@@ -26,11 +26,11 @@
#include <asm/io.h>
#ifdef CONFIG_X86_PAT
int __read_mostly pat_wc_enabled = 1;
int __read_mostly pat_enabled = 1;
void __cpuinit pat_disable(char *reason)
{
pat_wc_enabled = 0;
pat_enabled = 0;
printk(KERN_INFO "%s\n", reason);
}
@@ -72,7 +72,7 @@ void pat_init(void)
{
u64 pat;
if (!pat_wc_enabled)
if (!pat_enabled)
return;
/* Paranoia check. */
@@ -225,8 +225,8 @@ int reserve_memtype(u64 start, u64 end, unsigned long req_type,
unsigned long actual_type;
int err = 0;
/* Only track when pat_wc_enabled */
if (!pat_wc_enabled) {
/* Only track when pat_enabled */
if (!pat_enabled) {
/* This is identical to page table setting without PAT */
if (ret_type) {
if (req_type == -1) {
@@ -440,8 +440,8 @@ int free_memtype(u64 start, u64 end)
struct memtype *ml;
int err = -EINVAL;
/* Only track when pat_wc_enabled */
if (!pat_wc_enabled) {
/* Only track when pat_enabled */
if (!pat_enabled) {
return 0;
}
@@ -535,7 +535,7 @@ int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn,
* caching for the high addresses through the KEN pin, but
* we maintain the tradition of paranoia in this code.
*/
if (!pat_wc_enabled &&
if (!pat_enabled &&
!(boot_cpu_has(X86_FEATURE_MTRR) ||
boot_cpu_has(X86_FEATURE_K6_MTRR) ||
boot_cpu_has(X86_FEATURE_CYRIX_ARR) ||