lkml.org 
[lkml]   [2009]   [Mar]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH 0/5] [GIT PULL] updates for tip/tracing/ftrace

    * Paul E. McKenney <paulmck@linux.vnet.ibm.com> wrote:

    > On Fri, Mar 20, 2009 at 07:38:49PM +0100, Ingo Molnar wrote:
    > >
    > > * Ingo Molnar <mingo@elte.hu> wrote:
    > >
    > > > > > This looks like it is RCU/stop_machine related. The CPU is
    > > > > > stuck in in stop_machine? I see that rcu_torture is running.
    > > > > > Does this go away if you turn off rcu_torture?
    > > > >
    > > > > Grasping at straws... Does Lai's rcu_barrier() fix help?
    > > >
    > > > which one is that?
    > >
    > > ok, found it. Will know in about ~24 hours whether it helps.
    >
    > http://lkml.org/lkml/2009/3/20/71 was the one I was thinking of,
    > just to double-check.

    Yeah - i just picked it up into tip:core/rcu.

    I didnt immediately connect the two things, as 'tracer self-test'
    does not lend itself to 'CPU hotplug and RCU race fix' - but indeed
    in the case of the function tracer there's a dependency due to
    stop_machine_run(). Thanks for point it out!

    Ingo


    \
     
     \ /
      Last update: 2009-03-20 20:29    [W:3.191 / U:1.748 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site