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-rw-r--r--arch/x86/kernel/process.c38
1 files changed, 19 insertions, 19 deletions
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index ff4554198981..2efbfb712fb7 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -538,45 +538,45 @@ int mwait_usable(const struct cpuinfo_x86 *c)
538 return (edx & MWAIT_EDX_C1); 538 return (edx & MWAIT_EDX_C1);
539} 539}
540 540
541bool c1e_detected; 541bool amd_e400_c1e_detected;
542EXPORT_SYMBOL(c1e_detected); 542EXPORT_SYMBOL(amd_e400_c1e_detected);
543 543
544static cpumask_var_t c1e_mask; 544static cpumask_var_t amd_e400_c1e_mask;
545 545
546void c1e_remove_cpu(int cpu) 546void amd_e400_remove_cpu(int cpu)
547{ 547{
548 if (c1e_mask != NULL) 548 if (amd_e400_c1e_mask != NULL)
549 cpumask_clear_cpu(cpu, c1e_mask); 549 cpumask_clear_cpu(cpu, amd_e400_c1e_mask);
550} 550}
551 551
552/* 552/*
553 * C1E aware idle routine. We check for C1E active in the interrupt 553 * AMD Erratum 400 aware idle routine. We check for C1E active in the interrupt
554 * pending message MSR. If we detect C1E, then we handle it the same 554 * pending message MSR. If we detect C1E, then we handle it the same
555 * way as C3 power states (local apic timer and TSC stop) 555 * way as C3 power states (local apic timer and TSC stop)
556 */ 556 */
557static void c1e_idle(void) 557static void amd_e400_idle(void)
558{ 558{
559 if (need_resched()) 559 if (need_resched())
560 return; 560 return;
561 561
562 if (!c1e_detected) { 562 if (!amd_e400_c1e_detected) {
563 u32 lo, hi; 563 u32 lo, hi;
564 564
565 rdmsr(MSR_K8_INT_PENDING_MSG, lo, hi); 565 rdmsr(MSR_K8_INT_PENDING_MSG, lo, hi);
566 566
567 if (lo & K8_INTP_C1E_ACTIVE_MASK) { 567 if (lo & K8_INTP_C1E_ACTIVE_MASK) {
568 c1e_detected = true; 568 amd_e400_c1e_detected = true;
569 if (!boot_cpu_has(X86_FEATURE_NONSTOP_TSC)) 569 if (!boot_cpu_has(X86_FEATURE_NONSTOP_TSC))
570 mark_tsc_unstable("TSC halt in AMD C1E"); 570 mark_tsc_unstable("TSC halt in AMD C1E");
571 printk(KERN_INFO "System has AMD C1E enabled\n"); 571 printk(KERN_INFO "System has AMD C1E enabled\n");
572 } 572 }
573 } 573 }
574 574
575 if (c1e_detected) { 575 if (amd_e400_c1e_detected) {
576 int cpu = smp_processor_id(); 576 int cpu = smp_processor_id();
577 577
578 if (!cpumask_test_cpu(cpu, c1e_mask)) { 578 if (!cpumask_test_cpu(cpu, amd_e400_c1e_mask)) {
579 cpumask_set_cpu(cpu, c1e_mask); 579 cpumask_set_cpu(cpu, amd_e400_c1e_mask);
580 /* 580 /*
581 * Force broadcast so ACPI can not interfere. 581 * Force broadcast so ACPI can not interfere.
582 */ 582 */
@@ -619,17 +619,17 @@ void __cpuinit select_idle_routine(const struct cpuinfo_x86 *c)
619 pm_idle = mwait_idle; 619 pm_idle = mwait_idle;
620 } else if (cpu_has_amd_erratum(amd_erratum_400)) { 620 } else if (cpu_has_amd_erratum(amd_erratum_400)) {
621 /* E400: APIC timer interrupt does not wake up CPU from C1e */ 621 /* E400: APIC timer interrupt does not wake up CPU from C1e */
622 printk(KERN_INFO "using C1E aware idle routine\n"); 622 printk(KERN_INFO "using AMD E400 aware idle routine\n");
623 pm_idle = c1e_idle; 623 pm_idle = amd_e400_idle;
624 } else 624 } else
625 pm_idle = default_idle; 625 pm_idle = default_idle;
626} 626}
627 627
628void __init init_c1e_mask(void) 628void __init init_amd_e400_c1e_mask(void)
629{ 629{
630 /* If we're using c1e_idle, we need to allocate c1e_mask. */ 630 /* If we're using amd_e400_idle, we need to allocate amd_e400_c1e_mask. */
631 if (pm_idle == c1e_idle) 631 if (pm_idle == amd_e400_idle)
632 zalloc_cpumask_var(&c1e_mask, GFP_KERNEL); 632 zalloc_cpumask_var(&amd_e400_c1e_mask, GFP_KERNEL);
633} 633}
634 634
635static int __init idle_setup(char *str) 635static int __init idle_setup(char *str)