diff options
| -rw-r--r-- | arch/x86/kernel/cpu/bugs.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/common.c | 9 | ||||
| -rw-r--r-- | arch/x86/kernel/numaq_32.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/tsc_32.c | 14 | ||||
| -rw-r--r-- | arch/x86/mach-voyager/setup.c | 2 | ||||
| -rw-r--r-- | arch/x86/xen/time.c | 2 | ||||
| -rw-r--r-- | include/asm-x86/cpufeature.h | 4 | ||||
| -rw-r--r-- | include/asm-x86/tsc.h | 2 |
8 files changed, 11 insertions, 26 deletions
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c index a96abd453e0..9b95edcfc6a 100644 --- a/arch/x86/kernel/cpu/bugs.c +++ b/arch/x86/kernel/cpu/bugs.c @@ -154,7 +154,7 @@ static void __init check_config(void) * If we configured ourselves for a TSC, we'd better have one! */ #ifdef CONFIG_X86_TSC - if (!cpu_has_tsc && !tsc_disable) + if (!cpu_has_tsc) panic("Kernel compiled for Pentium+, requires TSC feature!"); #endif diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index c66991a04a8..dfc9563fc4f 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -446,10 +446,6 @@ void __cpuinit identify_cpu(struct cpuinfo_x86 *c) * we do "generic changes." */ - /* TSC disabled? */ - if ( tsc_disable ) - clear_bit(X86_FEATURE_TSC, c->x86_capability); - /* If the model name is still unset, do table lookup. */ if ( !c->x86_model_id[0] ) { char *p; @@ -650,11 +646,6 @@ void __cpuinit cpu_init(void) if (cpu_has_vme || cpu_has_tsc || cpu_has_de) clear_in_cr4(X86_CR4_VME|X86_CR4_PVI|X86_CR4_TSD|X86_CR4_DE); - if (tsc_disable && cpu_has_tsc) { - printk(KERN_NOTICE "Disabling TSC...\n"); - /**** FIX-HPA: DOES THIS REALLY BELONG HERE? ****/ - clear_bit(X86_FEATURE_TSC, boot_cpu_data.x86_capability); - } load_idt(&idt_descr); switch_to_new_gdt(); diff --git a/arch/x86/kernel/numaq_32.c b/arch/x86/kernel/numaq_32.c index 9000d82c6dc..e65281b1634 100644 --- a/arch/x86/kernel/numaq_32.c +++ b/arch/x86/kernel/numaq_32.c @@ -82,7 +82,7 @@ static int __init numaq_tsc_disable(void) { if (num_online_nodes() > 1) { printk(KERN_DEBUG "NUMAQ: disabling TSC\n"); - tsc_disable = 1; + setup_clear_cpu_cap(X86_FEATURE_TSC); } return 0; } diff --git a/arch/x86/kernel/tsc_32.c b/arch/x86/kernel/tsc_32.c index 2a7b95bd850..43517e324be 100644 --- a/arch/x86/kernel/tsc_32.c +++ b/arch/x86/kernel/tsc_32.c @@ -24,8 +24,6 @@ static int tsc_enabled; unsigned int tsc_khz; EXPORT_SYMBOL_GPL(tsc_khz); -int tsc_disable; - #ifdef CONFIG_X86_TSC static int __init tsc_setup(char *str) { @@ -40,8 +38,7 @@ static int __init tsc_setup(char *str) */ static int __init tsc_setup(char *str) { - tsc_disable = 1; - + setup_clear_cpu_cap(X86_FEATURE_TSC); return 1; } #endif @@ -395,7 +392,7 @@ void __init tsc_init(void) { int cpu; - if (!cpu_has_tsc || tsc_disable) + if (!cpu_has_tsc) goto out_no_tsc; cpu_khz = calculate_cpu_khz(); @@ -439,10 +436,5 @@ void __init tsc_init(void) return; out_no_tsc: - /* - * Set the tsc_disable flag if there's no TSC support, this - * makes it a fast flag for the kernel to see whether it - * should be using the TSC. - */ - tsc_disable = 1; + setup_clear_cpu_cap(X86_FEATURE_TSC); } diff --git a/arch/x86/mach-voyager/setup.c b/arch/x86/mach-voyager/setup.c index 81257a86198..5ae5466b9eb 100644 --- a/arch/x86/mach-voyager/setup.c +++ b/arch/x86/mach-voyager/setup.c @@ -37,7 +37,7 @@ void __init pre_setup_arch_hook(void) { /* Voyagers run their CPUs from independent clocks, so disable * the TSC code because we can't sync them */ - tsc_disable = 1; + setup_clear_cpu_cap(X86_FEATURE_TSC); } void __init trap_init_hook(void) diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c index d083ff5ef08..b3721fd6877 100644 --- a/arch/x86/xen/time.c +++ b/arch/x86/xen/time.c @@ -592,7 +592,7 @@ __init void xen_time_init(void) set_normalized_timespec(&wall_to_monotonic, -xtime.tv_sec, -xtime.tv_nsec); - tsc_disable = 0; + setup_force_cpu_cap(X86_FEATURE_TSC); xen_setup_timer(cpu); xen_setup_cpu_clockevents(); diff --git a/include/asm-x86/cpufeature.h b/include/asm-x86/cpufeature.h index b8f53f869e1..3fb7dfa7fc9 100644 --- a/include/asm-x86/cpufeature.h +++ b/include/asm-x86/cpufeature.h @@ -135,6 +135,10 @@ clear_cpu_cap(&boot_cpu_data, bit); \ set_bit(bit, cleared_cpu_caps); \ } while (0) +#define setup_force_cpu_cap(bit) do { \ + set_cpu_cap(&boot_cpu_data, bit); \ + clear_bit(bit, cleared_cpu_caps); \ +} while (0) #define cpu_has_fpu boot_cpu_has(X86_FEATURE_FPU) #define cpu_has_vme boot_cpu_has(X86_FEATURE_VME) diff --git a/include/asm-x86/tsc.h b/include/asm-x86/tsc.h index 071e0ce5b66..a6e8d35c3f8 100644 --- a/include/asm-x86/tsc.h +++ b/include/asm-x86/tsc.h @@ -16,8 +16,6 @@ typedef unsigned long long cycles_t; extern unsigned int cpu_khz; extern unsigned int tsc_khz; -/* flag for disabling the tsc */ -extern int tsc_disable; extern void disable_TSC(void); |