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Viewing changes to drivers/acpi/processor_core.c

  • Committer: Package Import Robot
  • Author(s): Alessio Igor Bogani
  • Date: 2011-10-26 11:13:05 UTC
  • Revision ID: package-import@ubuntu.com-20111026111305-04kado7d1u2er2rl
Tags: 3.2.0-16.25
Add new lowlatency kernel flavour

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drivers/acpi/processor_core.c
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        apic_id = map_mat_entry(handle, type, acpi_id);
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        if (apic_id == -1)
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                apic_id = map_madt_entry(type, acpi_id);
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        if (apic_id == -1)
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                return apic_id;
 
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        if (apic_id == -1) {
 
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                /*
 
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                 * On UP processor, there is no _MAT or MADT table.
 
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                 * So above apic_id is always set to -1.
 
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                 *
 
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                 * BIOS may define multiple CPU handles even for UP processor.
 
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                 * For example,
 
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                 *
 
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                 * Scope (_PR)
 
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                 * {
 
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                 *     Processor (CPU0, 0x00, 0x00000410, 0x06) {}
 
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                 *     Processor (CPU1, 0x01, 0x00000410, 0x06) {}
 
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                 *     Processor (CPU2, 0x02, 0x00000410, 0x06) {}
 
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                 *     Processor (CPU3, 0x03, 0x00000410, 0x06) {}
 
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                 * }
 
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                 *
 
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                 * Ignores apic_id and always return 0 for CPU0's handle.
 
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                 * Return -1 for other CPU's handle.
 
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                 */
 
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                if (acpi_id == 0)
 
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                        return acpi_id;
 
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                else
 
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                        return apic_id;
 
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        }
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#ifdef CONFIG_SMP
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        for_each_possible_cpu(i) {