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497c9a195d
so we can merge io_apic_32.c and io_apic_64.c v2: Use cpu_online_map as target cpus for bigsmp, just like 64-bit is doing. Also remove some unused TARGET_CPUS macro. v3: need to check if desc is null in smp_irq_move_cleanup also migration needs to reset vector too, so copy __target_IO_APIC_irq from 64bit. (the duplication will go away once the two files are unified.) Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
59 lines
1.3 KiB
C
59 lines
1.3 KiB
C
/*
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* APIC driver for "bigsmp" XAPIC machines with more than 8 virtual CPUs.
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* Drives the local APIC in "clustered mode".
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*/
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#define APIC_DEFINITION 1
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#include <linux/threads.h>
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#include <linux/cpumask.h>
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#include <asm/mpspec.h>
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#include <asm/genapic.h>
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#include <asm/fixmap.h>
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#include <asm/apicdef.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/dmi.h>
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#include <asm/bigsmp/apicdef.h>
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#include <linux/smp.h>
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#include <asm/bigsmp/apic.h>
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#include <asm/bigsmp/ipi.h>
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#include <asm/mach-default/mach_mpparse.h>
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static int dmi_bigsmp; /* can be set by dmi scanners */
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static int hp_ht_bigsmp(const struct dmi_system_id *d)
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{
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printk(KERN_NOTICE "%s detected: force use of apic=bigsmp\n", d->ident);
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dmi_bigsmp = 1;
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return 0;
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}
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static const struct dmi_system_id bigsmp_dmi_table[] = {
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{ hp_ht_bigsmp, "HP ProLiant DL760 G2",
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{ DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
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DMI_MATCH(DMI_BIOS_VERSION, "P44-"),}
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},
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{ hp_ht_bigsmp, "HP ProLiant DL740",
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{ DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
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DMI_MATCH(DMI_BIOS_VERSION, "P47-"),}
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},
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{ }
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};
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static cpumask_t vector_allocation_domain(int cpu)
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{
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return cpumask_of_cpu(cpu);
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}
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static int probe_bigsmp(void)
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{
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if (def_to_bigsmp)
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dmi_bigsmp = 1;
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else
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dmi_check_system(bigsmp_dmi_table);
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return dmi_bigsmp;
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}
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struct genapic apic_bigsmp = APIC_INIT("bigsmp", probe_bigsmp);
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