diff options
Diffstat (limited to 'arch/i386/kernel/cpu/mtrr/main.c')
-rw-r--r-- | arch/i386/kernel/cpu/mtrr/main.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/arch/i386/kernel/cpu/mtrr/main.c b/arch/i386/kernel/cpu/mtrr/main.c index 1e9db198c440..3b4618bed70d 100644 --- a/arch/i386/kernel/cpu/mtrr/main.c +++ b/arch/i386/kernel/cpu/mtrr/main.c | |||
@@ -44,12 +44,10 @@ | |||
44 | #include <asm/msr.h> | 44 | #include <asm/msr.h> |
45 | #include "mtrr.h" | 45 | #include "mtrr.h" |
46 | 46 | ||
47 | #define MTRR_VERSION "2.0 (20020519)" | ||
48 | |||
49 | u32 num_var_ranges = 0; | 47 | u32 num_var_ranges = 0; |
50 | 48 | ||
51 | unsigned int *usage_table; | 49 | unsigned int *usage_table; |
52 | static DECLARE_MUTEX(main_lock); | 50 | static DECLARE_MUTEX(mtrr_sem); |
53 | 51 | ||
54 | u32 size_or_mask, size_and_mask; | 52 | u32 size_or_mask, size_and_mask; |
55 | 53 | ||
@@ -335,7 +333,7 @@ int mtrr_add_page(unsigned long base, unsigned long size, | |||
335 | /* No CPU hotplug when we change MTRR entries */ | 333 | /* No CPU hotplug when we change MTRR entries */ |
336 | lock_cpu_hotplug(); | 334 | lock_cpu_hotplug(); |
337 | /* Search for existing MTRR */ | 335 | /* Search for existing MTRR */ |
338 | down(&main_lock); | 336 | down(&mtrr_sem); |
339 | for (i = 0; i < num_var_ranges; ++i) { | 337 | for (i = 0; i < num_var_ranges; ++i) { |
340 | mtrr_if->get(i, &lbase, &lsize, <ype); | 338 | mtrr_if->get(i, &lbase, &lsize, <ype); |
341 | if (base >= lbase + lsize) | 339 | if (base >= lbase + lsize) |
@@ -373,7 +371,7 @@ int mtrr_add_page(unsigned long base, unsigned long size, | |||
373 | printk(KERN_INFO "mtrr: no more MTRRs available\n"); | 371 | printk(KERN_INFO "mtrr: no more MTRRs available\n"); |
374 | error = i; | 372 | error = i; |
375 | out: | 373 | out: |
376 | up(&main_lock); | 374 | up(&mtrr_sem); |
377 | unlock_cpu_hotplug(); | 375 | unlock_cpu_hotplug(); |
378 | return error; | 376 | return error; |
379 | } | 377 | } |
@@ -466,7 +464,7 @@ int mtrr_del_page(int reg, unsigned long base, unsigned long size) | |||
466 | max = num_var_ranges; | 464 | max = num_var_ranges; |
467 | /* No CPU hotplug when we change MTRR entries */ | 465 | /* No CPU hotplug when we change MTRR entries */ |
468 | lock_cpu_hotplug(); | 466 | lock_cpu_hotplug(); |
469 | down(&main_lock); | 467 | down(&mtrr_sem); |
470 | if (reg < 0) { | 468 | if (reg < 0) { |
471 | /* Search for existing MTRR */ | 469 | /* Search for existing MTRR */ |
472 | for (i = 0; i < max; ++i) { | 470 | for (i = 0; i < max; ++i) { |
@@ -505,7 +503,7 @@ int mtrr_del_page(int reg, unsigned long base, unsigned long size) | |||
505 | set_mtrr(reg, 0, 0, 0); | 503 | set_mtrr(reg, 0, 0, 0); |
506 | error = reg; | 504 | error = reg; |
507 | out: | 505 | out: |
508 | up(&main_lock); | 506 | up(&mtrr_sem); |
509 | unlock_cpu_hotplug(); | 507 | unlock_cpu_hotplug(); |
510 | return error; | 508 | return error; |
511 | } | 509 | } |
@@ -671,7 +669,6 @@ void __init mtrr_bp_init(void) | |||
671 | break; | 669 | break; |
672 | } | 670 | } |
673 | } | 671 | } |
674 | printk(KERN_INFO "mtrr: v%s\n",MTRR_VERSION); | ||
675 | 672 | ||
676 | if (mtrr_if) { | 673 | if (mtrr_if) { |
677 | set_num_var_ranges(); | 674 | set_num_var_ranges(); |
@@ -688,7 +685,7 @@ void mtrr_ap_init(void) | |||
688 | if (!mtrr_if || !use_intel()) | 685 | if (!mtrr_if || !use_intel()) |
689 | return; | 686 | return; |
690 | /* | 687 | /* |
691 | * Ideally we should hold main_lock here to avoid mtrr entries changed, | 688 | * Ideally we should hold mtrr_sem here to avoid mtrr entries changed, |
692 | * but this routine will be called in cpu boot time, holding the lock | 689 | * but this routine will be called in cpu boot time, holding the lock |
693 | * breaks it. This routine is called in two cases: 1.very earily time | 690 | * breaks it. This routine is called in two cases: 1.very earily time |
694 | * of software resume, when there absolutely isn't mtrr entry changes; | 691 | * of software resume, when there absolutely isn't mtrr entry changes; |