hardirq.h

 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
 7typedef struct {
 8#if IS_ENABLED(CONFIG_CPU_MITIGATIONS) && IS_ENABLED(CONFIG_KVM_INTEL)
 9	u8	     kvm_cpu_l1tf_flush_l1d;
10#endif
11	unsigned int __nmi_count;	/* arch dependent */
12#ifdef CONFIG_X86_LOCAL_APIC
13	unsigned int apic_timer_irqs;	/* arch dependent */
14	unsigned int irq_spurious_count;
15	unsigned int icr_read_retry_count;
16#endif
17#if IS_ENABLED(CONFIG_KVM)
18	unsigned int kvm_posted_intr_ipis;
19	unsigned int kvm_posted_intr_wakeup_ipis;
20	unsigned int kvm_posted_intr_nested_ipis;
21#endif
22	unsigned int x86_platform_ipis;	/* arch dependent */
23	unsigned int apic_perf_irqs;
24	unsigned int apic_irq_work_irqs;
25#ifdef CONFIG_SMP
26	unsigned int irq_resched_count;
27	unsigned int irq_call_count;
28#endif
29	unsigned int irq_tlb_count;
30#ifdef CONFIG_X86_THERMAL_VECTOR
31	unsigned int irq_thermal_count;
32#endif
33#ifdef CONFIG_X86_MCE_THRESHOLD
34	unsigned int irq_threshold_count;
35#endif
36#ifdef CONFIG_X86_MCE_AMD
37	unsigned int irq_deferred_error_count;
38#endif
39#ifdef CONFIG_X86_HV_CALLBACK_VECTOR
40	unsigned int irq_hv_callback_count;
41#endif
42#if IS_ENABLED(CONFIG_HYPERV)
43	unsigned int irq_hv_reenlightenment_count;
44	unsigned int hyperv_stimer0_count;
45#endif
46#ifdef CONFIG_X86_POSTED_MSI
47	unsigned int posted_msi_notification_count;
48#endif
49} ____cacheline_aligned irq_cpustat_t;
50
51DECLARE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat);
52
53#ifdef CONFIG_X86_POSTED_MSI
54DECLARE_PER_CPU_ALIGNED(struct pi_desc, posted_msi_pi_desc);
55#endif
56#define __ARCH_IRQ_STAT
57
58#define inc_irq_stat(member)	this_cpu_inc(irq_stat.member)
59
60extern void ack_bad_irq(unsigned int irq);
61
62extern u64 arch_irq_stat_cpu(unsigned int cpu);
63#define arch_irq_stat_cpu	arch_irq_stat_cpu
64
65extern u64 arch_irq_stat(void);
66#define arch_irq_stat		arch_irq_stat
67
68DECLARE_PER_CPU_CACHE_HOT(u16, __softirq_pending);
69#define local_softirq_pending_ref       __softirq_pending
70
71#if IS_ENABLED(CONFIG_CPU_MITIGATIONS) && 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 */
76static __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
81static __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
86static __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) */
91static __always_inline void kvm_set_cpu_l1tf_flush_l1d(void) { }
92#endif /* IS_ENABLED(CONFIG_KVM_INTEL) */
93
94#endif /* _ASM_X86_HARDIRQ_H */