1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_X86_HARDIRQ_H
3 #define _ASM_X86_HARDIRQ_H
4
5 #include <linux/threads.h>
6 #include <asm/current.h>
7
8 typedef struct {
9 #if IS_ENABLED(CONFIG_KVM_INTEL)
10 u8 kvm_cpu_l1tf_flush_l1d;
11 #endif
12 unsigned int __nmi_count; /* arch dependent */
13 #ifdef CONFIG_X86_LOCAL_APIC
14 unsigned int apic_timer_irqs; /* arch dependent */
15 unsigned int irq_spurious_count;
16 unsigned int icr_read_retry_count;
17 #endif
18 #if IS_ENABLED(CONFIG_KVM)
19 unsigned int kvm_posted_intr_ipis;
20 unsigned int kvm_posted_intr_wakeup_ipis;
21 unsigned int kvm_posted_intr_nested_ipis;
22 #endif
23 unsigned int x86_platform_ipis; /* arch dependent */
24 unsigned int apic_perf_irqs;
25 unsigned int apic_irq_work_irqs;
26 #ifdef CONFIG_SMP
27 unsigned int irq_resched_count;
28 unsigned int irq_call_count;
29 #endif
30 unsigned int irq_tlb_count;
31 #ifdef CONFIG_X86_THERMAL_VECTOR
32 unsigned int irq_thermal_count;
33 #endif
34 #ifdef CONFIG_X86_MCE_THRESHOLD
35 unsigned int irq_threshold_count;
36 #endif
37 #ifdef CONFIG_X86_MCE_AMD
38 unsigned int irq_deferred_error_count;
39 #endif
40 #ifdef CONFIG_X86_HV_CALLBACK_VECTOR
41 unsigned int irq_hv_callback_count;
42 #endif
43 #if IS_ENABLED(CONFIG_HYPERV)
44 unsigned int irq_hv_reenlightenment_count;
45 unsigned int hyperv_stimer0_count;
46 #endif
47 #ifdef CONFIG_X86_POSTED_MSI
48 unsigned int posted_msi_notification_count;
49 #endif
50 } ____cacheline_aligned irq_cpustat_t;
51
52 DECLARE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat);
53
54 #ifdef CONFIG_X86_POSTED_MSI
55 DECLARE_PER_CPU_ALIGNED(struct pi_desc, posted_msi_pi_desc);
56 #endif
57 #define __ARCH_IRQ_STAT
58
59 #define inc_irq_stat(member) this_cpu_inc(irq_stat.member)
60
61 extern void ack_bad_irq(unsigned int irq);
62
63 extern u64 arch_irq_stat_cpu(unsigned int cpu);
64 #define arch_irq_stat_cpu arch_irq_stat_cpu
65
66 extern u64 arch_irq_stat(void);
67 #define arch_irq_stat arch_irq_stat
68
69 #define local_softirq_pending_ref pcpu_hot.softirq_pending
70
71 #if IS_ENABLED(CONFIG_KVM_INTEL)
72 /*
73 * This function is called from noinstr interrupt contexts
74 * and must be inlined to not get instrumentation.
75 */
76 static __always_inline void kvm_set_cpu_l1tf_flush_l1d(void)
77 {
78 __this_cpu_write(irq_stat.kvm_cpu_l1tf_flush_l1d, 1);
79 }
80
81 static __always_inline void kvm_clear_cpu_l1tf_flush_l1d(void)
82 {
83 __this_cpu_write(irq_stat.kvm_cpu_l1tf_flush_l1d, 0);
84 }
85
86 static __always_inline bool kvm_get_cpu_l1tf_flush_l1d(void)
87 {
88 return __this_cpu_read(irq_stat.kvm_cpu_l1tf_flush_l1d);
89 }
90 #else /* !IS_ENABLED(CONFIG_KVM_INTEL) */
91 static __always_inline void kvm_set_cpu_l1tf_flush_l1d(void) { }
92 #endif /* IS_ENABLED(CONFIG_KVM_INTEL) */
93
94 #endif /* _ASM_X86_HARDIRQ_H */
95
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.