Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
x86: make nmi_cpu_busy() always defined
nmi_cpu_busy() must be available on !SMP too.
this is in preparation to a smp_call_function_mask() fix.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
+2
-2
arch/x86/kernel/nmi_32.c
+2
-2
arch/x86/kernel/nmi_32.c
···
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static int endflag __initdata = 0;
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-
#ifdef CONFIG_SMP
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/* The performance counters used by NMI_LOCAL_APIC don't trigger when
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* the CPU is idle. To make sure the NMI watchdog really ticks on all
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* CPUs during the test make them busy.
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*/
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static __init void nmi_cpu_busy(void *data)
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{
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local_irq_enable_in_hardirq();
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/* Intentionally don't use cpu_relax here. This is
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to make sure that the performance counter really ticks,
···
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care if they get somewhat less cycles. */
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while (endflag == 0)
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mb();
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-
}
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#endif
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static int __init check_nmi_watchdog(void)
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{
···
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static int endflag __initdata = 0;
53
54
/* The performance counters used by NMI_LOCAL_APIC don't trigger when
55
* the CPU is idle. To make sure the NMI watchdog really ticks on all
56
* CPUs during the test make them busy.
57
*/
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static __init void nmi_cpu_busy(void *data)
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{
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+
#ifdef CONFIG_SMP
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local_irq_enable_in_hardirq();
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/* Intentionally don't use cpu_relax here. This is
63
to make sure that the performance counter really ticks,
···
67
care if they get somewhat less cycles. */
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while (endflag == 0)
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mb();
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#endif
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+
}
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static int __init check_nmi_watchdog(void)
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{