diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/hardirq.h | 1 | ||||
| -rw-r--r-- | arch/x86/include/asm/idtentry.h | 1 | ||||
| -rw-r--r-- | arch/x86/include/asm/irq_vectors.h | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/idt.c | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/irq.c | 16 |
5 files changed, 20 insertions, 0 deletions
diff --git a/arch/x86/include/asm/hardirq.h b/arch/x86/include/asm/hardirq.h index a4623fdb65a1..de7fdd2cabd9 100644 --- a/arch/x86/include/asm/hardirq.h +++ b/arch/x86/include/asm/hardirq.h @@ -23,6 +23,7 @@ typedef struct { #ifdef CONFIG_X86_USER_INTERRUPTS unsigned int uintr_spurious_count; unsigned int uintr_kernel_notifications; + unsigned int uintr_event_notifications; #endif unsigned int x86_platform_ipis; /* arch dependent */ unsigned int apic_perf_irqs; diff --git a/arch/x86/include/asm/idtentry.h b/arch/x86/include/asm/idtentry.h index 0ac7ef592283..c98adb309f95 100644 --- a/arch/x86/include/asm/idtentry.h +++ b/arch/x86/include/asm/idtentry.h @@ -674,6 +674,7 @@ DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_NESTED_VECTOR, sysvec_kvm_posted_intr_nested #ifdef CONFIG_X86_USER_INTERRUPTS DECLARE_IDTENTRY_SYSVEC(UINTR_NOTIFICATION_VECTOR, sysvec_uintr_spurious_interrupt); DECLARE_IDTENTRY_SYSVEC(UINTR_KERNEL_VECTOR, sysvec_uintr_kernel_notification); +DECLARE_IDTENTRY_SYSVEC(UINTR_EVENT_VECTOR, sysvec_uintr_event_notification); #endif #if IS_ENABLED(CONFIG_HYPERV) diff --git a/arch/x86/include/asm/irq_vectors.h b/arch/x86/include/asm/irq_vectors.h index 1d289b3ee0da..66d1b9505120 100644 --- a/arch/x86/include/asm/irq_vectors.h +++ b/arch/x86/include/asm/irq_vectors.h @@ -107,6 +107,7 @@ /* Vector for User interrupt notifications */ #define UINTR_NOTIFICATION_VECTOR 0xec #define UINTR_KERNEL_VECTOR 0xeb +#define UINTR_EVENT_VECTOR 0xe9 #define LOCAL_TIMER_VECTOR 0xea diff --git a/arch/x86/kernel/idt.c b/arch/x86/kernel/idt.c index 8d4fd7509523..2d68768f74dc 100644 --- a/arch/x86/kernel/idt.c +++ b/arch/x86/kernel/idt.c @@ -150,6 +150,7 @@ static const __initconst struct idt_data apic_idts[] = { #ifdef CONFIG_X86_USER_INTERRUPTS INTG(UINTR_NOTIFICATION_VECTOR, asm_sysvec_uintr_spurious_interrupt), INTG(UINTR_KERNEL_VECTOR, asm_sysvec_uintr_kernel_notification), + INTG(UINTR_EVENT_VECTOR, asm_sysvec_uintr_event_notification), #endif # ifdef CONFIG_IRQ_WORK INTG(IRQ_WORK_VECTOR, asm_sysvec_irq_work), diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c index 22349f5c301b..cb38c8737602 100644 --- a/arch/x86/kernel/irq.c +++ b/arch/x86/kernel/irq.c @@ -193,6 +193,11 @@ int arch_show_interrupts(struct seq_file *p, int prec) for_each_online_cpu(j) seq_printf(p, "%10u ", irq_stats(j)->uintr_kernel_notifications); seq_puts(p, " User-interrupt kernel notification event\n"); + + seq_printf(p, "%*s: ", prec, "UKN"); + for_each_online_cpu(j) + seq_printf(p, "%10u ", irq_stats(j)->uintr_event_notifications); + seq_puts(p, " User-interrupt event notification\n"); #endif return 0; } @@ -374,6 +379,17 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_uintr_kernel_notification) uintr_wake_up_process(); } +/* + * Handler for UINTR_EVENT_VECTOR. + */ +DEFINE_IDTENTRY_SYSVEC(sysvec_uintr_event_notification) +{ + /* TODO: Add entry-exit tracepoints */ + ack_APIC_irq(); + inc_irq_stat(uintr_event_notifications); + + /* do event things */ +} #endif |