rtl8211F_led_control

hc

2024-05-11 297b60346df8beafee954a0fd7c2d64f33f3b9bc

 kernel/arch/x86/kernel/time.c
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@@ -10,6 +10,7 @@
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  *
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  */
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+#include <linux/clocksource.h>
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 #include <linux/clockchips.h>
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 #include <linux/interrupt.h>
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 #include <linux/irq.h>
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@@ -32,8 +33,7 @@
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 #ifdef CONFIG_FRAME_POINTER
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 		return *(unsigned long *)(regs->bp + sizeof(long));
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 #else
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-		unsigned long *sp =
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-			(unsigned long *)kernel_stack_pointer(regs);
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+		unsigned long *sp = (unsigned long *)regs->sp;
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 		/*
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 		 * Return address is either directly at stack pointer
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 		 * or above a saved flags. Eflags has bits 22-31 zero,
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@@ -58,39 +58,50 @@
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 	return IRQ_HANDLED;
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 }
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-static struct irqaction irq0  = {
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-	.handler = timer_interrupt,
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-	.flags = IRQF_NOBALANCING | IRQF_IRQPOLL | IRQF_TIMER,
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-	.name = "timer"
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-};
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-
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 static void __init setup_default_timer_irq(void)
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 {
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+	unsigned long flags = IRQF_NOBALANCING | IRQF_IRQPOLL | IRQF_TIMER;
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+
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 	/*
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-	 * Unconditionally register the legacy timer; even without legacy
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-	 * PIC/PIT we need this for the HPET0 in legacy replacement mode.
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+	 * Unconditionally register the legacy timer interrupt; even
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+	 * without legacy PIC/PIT we need this for the HPET0 in legacy
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+	 * replacement mode.
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 	 */
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-	if (setup_irq(0, &irq0))
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+	if (request_irq(0, timer_interrupt, flags, "timer", NULL))
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 		pr_info("Failed to register legacy timer interrupt\n");
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 }
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 /* Default timer init function */
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 void __init hpet_time_init(void)
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 {
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-	if (!hpet_enable())
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-		setup_pit_timer();
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+	if (!hpet_enable()) {
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+		if (!pit_timer_init())
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+			return;
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+	}
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+
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 	setup_default_timer_irq();
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 }
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 static __init void x86_late_time_init(void)
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 {
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-	x86_init.timers.timer_init();
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 	/*
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-	 * After PIT/HPET timers init, select and setup
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-	 * the final interrupt mode for delivering IRQs.
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+	 * Before PIT/HPET init, select the interrupt mode. This is required
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+	 * to make the decision whether PIT should be initialized correct.
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+	 */
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+	x86_init.irqs.intr_mode_select();
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+
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+	/* Setup the legacy timers */
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+	x86_init.timers.timer_init();
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+
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+	/*
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+	 * After PIT/HPET timers init, set up the final interrupt mode for
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+	 * delivering IRQs.
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 	 */
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 	x86_init.irqs.intr_mode_init();
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 	tsc_init();
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+
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+	if (static_cpu_has(X86_FEATURE_WAITPKG))
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+		use_tpause_delay();
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 }
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 /*
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@@ -101,3 +112,18 @@
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 {
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 	late_time_init = x86_late_time_init;
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 }
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+
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+/*
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+ * Sanity check the vdso related archdata content.
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+ */
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+void clocksource_arch_init(struct clocksource *cs)
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+{
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+	if (cs->vdso_clock_mode == VDSO_CLOCKMODE_NONE)
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+		return;
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+
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+	if (cs->mask != CLOCKSOURCE_MASK(64)) {
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+		pr_warn("clocksource %s registered with invalid mask %016llx for VDSO. Disabling VDSO support.\n",
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+			cs->name, cs->mask);
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+		cs->vdso_clock_mode = VDSO_CLOCKMODE_NONE;
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+	}
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+}