lkml.org 
[lkml]   [2010]   [Mar]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectRe: [patch 2/2] x86,pat Convert memtype_lock into an rw_lock.
    From
    Date
    On Wed, 2010-03-17 at 16:19 -0800, Suresh Siddha wrote:
    > On Wed, 2010-03-17 at 12:51 -0700, H. Peter Anvin wrote:
    > > Well, as you know :) tglx and I are on the road ... I'll try to get to it on Friday before I take off again.
    >
    > Also I talked to Thomas about this rwlock conversion and he referred to
    > RT issues with rwlock. And the best is to avoid this using RCU.

    Its not just RT, even for mainline rwlock_t is a massive pain and often
    is no better (actually worse) than a spinlock due to the massive
    cacheline bouncing it introduces.




    \
     
     \ /
      Last update: 2010-03-24 12:35    [W:0.020 / U:29.492 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site