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    x86_64/mm: check and print vmemmap allocation continuous · c2b91e2e
    Yinghai Lu 提交于
    On big systems with lots of memory, don't print out too much during
    bootup, and make it easy to find if it is continuous.
    
    on 256G 8 sockets system will get
     [ffffe20000000000-ffffe20002bfffff] PMD -> [ffff810001400000-ffff810003ffffff] on node 0
    [ffffe2001c700000-ffffe2001c7fffff] potential offnode page_structs
     [ffffe20002c00000-ffffe2001c7fffff] PMD -> [ffff81000c000000-ffff8100255fffff] on node 0
    [ffffe20038700000-ffffe200387fffff] potential offnode page_structs
     [ffffe2001c800000-ffffe200387fffff] PMD -> [ffff810820200000-ffff81083c1fffff] on node 1
     [ffffe20040000000-ffffe2007fffffff] PUD ->ffff811027a00000 on node 2
     [ffffe20038800000-ffffe2003fffffff] PMD -> [ffff811020200000-ffff8110279fffff] on node 2
    [ffffe20054700000-ffffe200547fffff] potential offnode page_structs
     [ffffe20040000000-ffffe200547fffff] PMD -> [ffff811027c00000-ffff81103c3fffff] on node 2
    [ffffe20070700000-ffffe200707fffff] potential offnode page_structs
     [ffffe20054800000-ffffe200707fffff] PMD -> [ffff811820200000-ffff81183c1fffff] on node 3
     [ffffe20080000000-ffffe200bfffffff] PUD ->ffff81202fa00000 on node 4
     [ffffe20070800000-ffffe2007fffffff] PMD -> [ffff812020200000-ffff81202f9fffff] on node 4
    [ffffe2008c700000-ffffe2008c7fffff] potential offnode page_structs
     [ffffe20080000000-ffffe2008c7fffff] PMD -> [ffff81202fc00000-ffff81203c3fffff] on node 4
    [ffffe200a8700000-ffffe200a87fffff] potential offnode page_structs
     [ffffe2008c800000-ffffe200a87fffff] PMD -> [ffff812820200000-ffff81283c1fffff] on node 5
     [ffffe200c0000000-ffffe200ffffffff] PUD ->ffff813037a00000 on node 6
     [ffffe200a8800000-ffffe200bfffffff] PMD -> [ffff813020200000-ffff8130379fffff] on node 6
    [ffffe200c4700000-ffffe200c47fffff] potential offnode page_structs
     [ffffe200c0000000-ffffe200c47fffff] PMD -> [ffff813037c00000-ffff81303c3fffff] on node 6
     [ffffe200c4800000-ffffe200e07fffff] PMD -> [ffff813820200000-ffff81383c1fffff] on node 7
    
    instead of a very long print out...
    Signed-off-by: NYinghai Lu <yhlu.kernel@gmail.com>
    Signed-off-by: NIngo Molnar <mingo@elte.hu>
    Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
    c2b91e2e
mm.h 41.5 KB