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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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8b5690f884
Since commit [e58aa3d2: genirq: Run irq handlers with interrupts disabled], We run all interrupt handlers with interrupts disabled and we even check and yell when an interrupt handler returns with interrupts enabled (see commit [b738a50a: genirq: Warn when handler enables interrupts]). So now this flag is a NOOP and can be removed. [ralf@linux-mips.org: Fixed up conflicts in arch/mips/alchemy/common/dbdma.c, arch/mips/cavium-octeon/smp.c and arch/mips/kernel/perf_event.c.] Signed-off-by: Yong Zhang <yong.zhang0@gmail.com> To: linux-kernel@vger.kernel.org Cc: tglx@linutronix.de linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2835/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
40 lines
734 B
C
40 lines
734 B
C
/*
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* i8253.c 8253/PIT functions
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*
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*/
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#include <linux/clockchips.h>
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#include <linux/i8253.h>
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#include <linux/export.h>
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#include <linux/smp.h>
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#include <linux/irq.h>
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#include <asm/time.h>
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static irqreturn_t timer_interrupt(int irq, void *dev_id)
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{
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i8253_clockevent.event_handler(&i8253_clockevent);
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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_TIMER,
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.name = "timer"
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};
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void __init setup_pit_timer(void)
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{
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clockevent_i8253_init(true);
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setup_irq(0, &irq0);
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}
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static int __init init_pit_clocksource(void)
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{
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if (num_possible_cpus() > 1) /* PIT does not scale! */
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return 0;
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return clocksource_i8253_init();
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}
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arch_initcall(init_pit_clocksource);
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