add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/arch/parisc/kernel/irq.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /* 
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  * Code to handle x86 style IRQs plus some generic interrupt stuff.
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  *
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@@ -6,20 +7,6 @@
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  * Copyright (C) 1999 SuSE GmbH (Philipp Rumpf, prumpf@tux.org)
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  * Copyright (C) 1999-2000 Grant Grundler
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  * Copyright (c) 2005 Matthew Wilcox
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- *
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- *    This program is free software; you can redistribute it and/or modify
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- *    it under the terms of the GNU General Public License as published by
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- *    the Free Software Foundation; either version 2, or (at your option)
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- *    any later version.
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- *
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- *    This program is distributed in the hope that it will be useful,
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- *    but WITHOUT ANY WARRANTY; without even the implied warranty of
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- *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- *    GNU General Public License for more details.
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- *
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- *    You should have received a copy of the GNU General Public License
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- *    along with this program; if not, write to the Free Software
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- *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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  */
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 #include <linux/bitops.h>
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 #include <linux/errno.h>
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@@ -117,7 +104,10 @@
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 		return -EINVAL;
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 	/* whatever mask they set, we just allow one CPU */
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-	cpu_dest = cpumask_first_and(dest, cpu_online_mask);
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+	cpu_dest = cpumask_next_and(d->irq & (num_online_cpus()-1),
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+					dest, cpu_online_mask);
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+	if (cpu_dest >= nr_cpu_ids)
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+		cpu_dest = cpumask_first_and(dest, cpu_online_mask);
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 	return cpu_dest;
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 }
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@@ -175,10 +165,16 @@
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 # endif
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 #endif
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 #ifdef CONFIG_SMP
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-	seq_printf(p, "%*s: ", prec, "RES");
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-	for_each_online_cpu(j)
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-		seq_printf(p, "%10u ", irq_stats(j)->irq_resched_count);
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-	seq_puts(p, "  Rescheduling interrupts\n");
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+	if (num_online_cpus() > 1) {
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+		seq_printf(p, "%*s: ", prec, "RES");
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+		for_each_online_cpu(j)
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+			seq_printf(p, "%10u ", irq_stats(j)->irq_resched_count);
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+		seq_puts(p, "  Rescheduling interrupts\n");
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+		seq_printf(p, "%*s: ", prec, "CAL");
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+		for_each_online_cpu(j)
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+			seq_printf(p, "%10u ", irq_stats(j)->irq_call_count);
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+		seq_puts(p, "  Function call interrupts\n");
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+	}
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 #endif
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 	seq_printf(p, "%*s: ", prec, "UAH");
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 	for_each_online_cpu(j)
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@@ -568,33 +564,23 @@
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 	goto out;
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 }
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-static struct irqaction timer_action = {
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-	.handler = timer_interrupt,
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-	.name = "timer",
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-	.flags = IRQF_TIMER | IRQF_PERCPU | IRQF_IRQPOLL,
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-};
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-
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-#ifdef CONFIG_SMP
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-static struct irqaction ipi_action = {
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-	.handler = ipi_interrupt,
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-	.name = "IPI",
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-	.flags = IRQF_PERCPU,
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-};
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-#endif
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-
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 static void claim_cpu_irqs(void)
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 {
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+	unsigned long flags = IRQF_TIMER | IRQF_PERCPU | IRQF_IRQPOLL;
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 	int i;
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+
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 	for (i = CPU_IRQ_BASE; i <= CPU_IRQ_MAX; i++) {
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 		irq_set_chip_and_handler(i, &cpu_interrupt_type,
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 					 handle_percpu_irq);
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 	}
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 	irq_set_handler(TIMER_IRQ, handle_percpu_irq);
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-	setup_irq(TIMER_IRQ, &timer_action);
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+	if (request_irq(TIMER_IRQ, timer_interrupt, flags, "timer", NULL))
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+		pr_err("Failed to register timer interrupt\n");
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 #ifdef CONFIG_SMP
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 	irq_set_handler(IPI_IRQ, handle_percpu_irq);
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-	setup_irq(IPI_IRQ, &ipi_action);
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+	if (request_irq(IPI_IRQ, ipi_interrupt, IRQF_PERCPU, "IPI", NULL))
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+		pr_err("Failed to register IPI interrupt\n");
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 #endif
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 }
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