add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/x86/xen/smp_pv.c
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@@ -30,6 +30,7 @@
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 #include <asm/desc.h>
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 #include <asm/cpu.h>
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 #include <asm/io_apic.h>
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+#include <asm/fpu/internal.h>
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 #include <xen/interface/xen.h>
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 #include <xen/interface/vcpu.h>
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@@ -63,6 +64,7 @@
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 	cr4_init();
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 	cpu_init();
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+	fpu__init_cpu();
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 	touch_softlockup_watchdog();
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 	preempt_disable();
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@@ -98,18 +100,18 @@
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 void xen_smp_intr_free_pv(unsigned int cpu)
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 {
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+	kfree(per_cpu(xen_irq_work, cpu).name);
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+	per_cpu(xen_irq_work, cpu).name = NULL;
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 	if (per_cpu(xen_irq_work, cpu).irq >= 0) {
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 		unbind_from_irqhandler(per_cpu(xen_irq_work, cpu).irq, NULL);
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 		per_cpu(xen_irq_work, cpu).irq = -1;
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-		kfree(per_cpu(xen_irq_work, cpu).name);
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-		per_cpu(xen_irq_work, cpu).name = NULL;
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 	}
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+	kfree(per_cpu(xen_pmu_irq, cpu).name);
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+	per_cpu(xen_pmu_irq, cpu).name = NULL;
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 	if (per_cpu(xen_pmu_irq, cpu).irq >= 0) {
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 		unbind_from_irqhandler(per_cpu(xen_pmu_irq, cpu).irq, NULL);
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 		per_cpu(xen_pmu_irq, cpu).irq = -1;
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-		kfree(per_cpu(xen_pmu_irq, cpu).name);
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-		per_cpu(xen_pmu_irq, cpu).name = NULL;
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 	}
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 }
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@@ -119,6 +121,7 @@
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 	char *callfunc_name, *pmu_name;
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 	callfunc_name = kasprintf(GFP_KERNEL, "irqwork%d", cpu);
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+	per_cpu(xen_irq_work, cpu).name = callfunc_name;
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 	rc = bind_ipi_to_irqhandler(XEN_IRQ_WORK_VECTOR,
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 				    cpu,
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 				    xen_irq_work_interrupt,
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@@ -128,10 +131,10 @@
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 	if (rc < 0)
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 		goto fail;
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 	per_cpu(xen_irq_work, cpu).irq = rc;
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-	per_cpu(xen_irq_work, cpu).name = callfunc_name;
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 	if (is_xen_pmu) {
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 		pmu_name = kasprintf(GFP_KERNEL, "pmu%d", cpu);
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+		per_cpu(xen_pmu_irq, cpu).name = pmu_name;
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 		rc = bind_virq_to_irqhandler(VIRQ_XENPMU, cpu,
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 					     xen_pmu_irq_handler,
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 					     IRQF_PERCPU|IRQF_NOBALANCING,
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@@ -139,7 +142,6 @@
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 		if (rc < 0)
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 			goto fail;
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 		per_cpu(xen_pmu_irq, cpu).irq = rc;
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-		per_cpu(xen_pmu_irq, cpu).name = pmu_name;
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 	}
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 	return 0;