mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-02 15:18:19 +00:00
9aee5f8a7e
An upcoming patch will extend KVM's L1TF mitigation in conditional mode to also cover interrupts after VMEXITs. For tracking those, stores to a new per-cpu flag from interrupt handlers will become necessary. In order to improve cache locality, this new flag will be added to x86's irq_cpustat_t. Make some space available there by shrinking the ->softirq_pending bitfield from 32 to 16 bits: the number of bits actually used is only NR_SOFTIRQS, i.e. 10. Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Nicolai Stange <nstange@suse.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _ASM_X86_HARDIRQ_H
|
|
#define _ASM_X86_HARDIRQ_H
|
|
|
|
#include <linux/threads.h>
|
|
#include <linux/irq.h>
|
|
|
|
typedef struct {
|
|
u16 __softirq_pending;
|
|
unsigned int __nmi_count; /* arch dependent */
|
|
#ifdef CONFIG_X86_LOCAL_APIC
|
|
unsigned int apic_timer_irqs; /* arch dependent */
|
|
unsigned int irq_spurious_count;
|
|
unsigned int icr_read_retry_count;
|
|
#endif
|
|
#ifdef CONFIG_HAVE_KVM
|
|
unsigned int kvm_posted_intr_ipis;
|
|
unsigned int kvm_posted_intr_wakeup_ipis;
|
|
unsigned int kvm_posted_intr_nested_ipis;
|
|
#endif
|
|
unsigned int x86_platform_ipis; /* arch dependent */
|
|
unsigned int apic_perf_irqs;
|
|
unsigned int apic_irq_work_irqs;
|
|
#ifdef CONFIG_SMP
|
|
unsigned int irq_resched_count;
|
|
unsigned int irq_call_count;
|
|
#endif
|
|
unsigned int irq_tlb_count;
|
|
#ifdef CONFIG_X86_THERMAL_VECTOR
|
|
unsigned int irq_thermal_count;
|
|
#endif
|
|
#ifdef CONFIG_X86_MCE_THRESHOLD
|
|
unsigned int irq_threshold_count;
|
|
#endif
|
|
#ifdef CONFIG_X86_MCE_AMD
|
|
unsigned int irq_deferred_error_count;
|
|
#endif
|
|
#if IS_ENABLED(CONFIG_HYPERV) || defined(CONFIG_XEN)
|
|
unsigned int irq_hv_callback_count;
|
|
#endif
|
|
#if IS_ENABLED(CONFIG_HYPERV)
|
|
unsigned int irq_hv_reenlightenment_count;
|
|
unsigned int hyperv_stimer0_count;
|
|
#endif
|
|
} ____cacheline_aligned irq_cpustat_t;
|
|
|
|
DECLARE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat);
|
|
|
|
#define __ARCH_IRQ_STAT
|
|
|
|
#define inc_irq_stat(member) this_cpu_inc(irq_stat.member)
|
|
|
|
extern void ack_bad_irq(unsigned int irq);
|
|
|
|
extern u64 arch_irq_stat_cpu(unsigned int cpu);
|
|
#define arch_irq_stat_cpu arch_irq_stat_cpu
|
|
|
|
extern u64 arch_irq_stat(void);
|
|
#define arch_irq_stat arch_irq_stat
|
|
|
|
#endif /* _ASM_X86_HARDIRQ_H */
|