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    Subject[PATCH 0/6] loglevel=pci:8,acpi:8,apic=8 support v5
    Date
        KERN_PCI
    KERN_ACPI
    v4: fix some checkpatch error and warning
    v5: add default with DEFINE_LOGLEVE_SETUP_DEF
    KERN_APIC

    usage:
    in .h to have
    #define KERN_PCI "<pci>"
    in .c to have
    DEFINE_LOGLEVEL_SETUP(pci, KERN_PCI, "pci:");
    then could use
    printk(KERN_DEBUG KERN_PCI fmt, ...);
    and command line
    loglevel=3,pci:8

    you can add different printk to different files of one subsys if you like
    not just one susbsys one tag, and don't need to update kernel.h to add more tags

    YH


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