From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Mon, 6 May 2024 03:02:30 +0200
Subject: Adding upstream version 4.19.249.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 arch/x86/kernel/irq_work.c | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 arch/x86/kernel/irq_work.c

(limited to 'arch/x86/kernel/irq_work.c')

diff --git a/arch/x86/kernel/irq_work.c b/arch/x86/kernel/irq_work.c
new file mode 100644
index 000000000..80bee7695
--- /dev/null
+++ b/arch/x86/kernel/irq_work.c
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * x86 specific code for irq_work
+ *
+ * Copyright (C) 2010 Red Hat, Inc., Peter Zijlstra
+ */
+
+#include <linux/kernel.h>
+#include <linux/irq_work.h>
+#include <linux/hardirq.h>
+#include <asm/apic.h>
+#include <asm/trace/irq_vectors.h>
+#include <linux/interrupt.h>
+
+#ifdef CONFIG_X86_LOCAL_APIC
+__visible void __irq_entry smp_irq_work_interrupt(struct pt_regs *regs)
+{
+	ipi_entering_ack_irq();
+	trace_irq_work_entry(IRQ_WORK_VECTOR);
+	inc_irq_stat(apic_irq_work_irqs);
+	irq_work_run();
+	trace_irq_work_exit(IRQ_WORK_VECTOR);
+	exiting_irq();
+}
+
+void arch_irq_work_raise(void)
+{
+	if (!arch_irq_work_has_interrupt())
+		return;
+
+	apic->send_IPI_self(IRQ_WORK_VECTOR);
+	apic_wait_icr_idle();
+}
+#endif
-- 
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