lkml.org 
[lkml]   [2011]   [Jan]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 1/2] lockdep: move early boot local IRQ enable/disable status to init/main.c
From
Date
On Thu, 2011-01-20 at 12:26 +0100, Tejun Heo wrote:
> On Thu, Jan 20, 2011 at 12:23:51PM +0100, Peter Zijlstra wrote:
> > On Thu, 2011-01-20 at 12:11 +0100, Tejun Heo wrote:
> > > Hello, guys.
> > >
> > > These two patches remove both warnings. The first warning was
> > > completely spurious. The second lockdep one was triggered by
> > > on_each_cpu() enabling local IRQ too early.
> > >
> > > I don't think percpu allocator itself malfunctioned. There was no
> > > allocation failure. It whines when percpu allocation fails but didn't
> > > in the log. Other than calling vfree() early triggering the above
> > > condition, it worked okay.
> > >
> > > So, it's either the early enabling of local IRQ by on_each_cpu()
> > > breaking something in the IRQ subsystem or something different. Ingo,
> > > can you please see whether these two patches cure the panic too?
> >
> > Why not use something like: system_state != SYSTEM_RUNNING ?
>
> Cuz, it's finer grained than that. We can add a SYSTEM_* flag but I
> wasn't sure whether that would be just creating more noise. If we try
> to consolidate these things, we probably should consider
> oops_in_progress too. It probably is a good idea but let's first fix
> the problem at hand.

Right, no problem with that, I was just wondering why you'd add an extra
variable instead of using the system states.


\
 
 \ /
  Last update: 2011-01-20 12:41    [W:0.083 / U:55.324 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site