lkml.org 
[lkml]   [2014]   [Jul]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    SubjectRE: [PATCH 3/6] x86-mce: Clear CMCI enable on all claimed CMCI banks before reboot.
    Date
    +	if (!xchg(&reboot_notifier_registered, true))
    + register_reboot_notifier(&cmci_reboot_notifier);

    This is super-safe ... but isn't the xchg() overkill? I thought we serialized bringup
    of other cpus.

    Has this "do it once" caught on elsewhere in the kernel ... I suppose it is more concise than

    if (!reboot_notifier_registered) {
    reboot_notifier_registered = 1;
    register_reboot_notifier(&cmci_reboot_notifier);
    }

    -Tony


    \
     
     \ /
      Last update: 2014-07-09 23:21    [W:4.048 / U:0.044 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site