Re: [GIT PULL] ring-buffer: Allow for rescheduling when removing pages

[Steven Rostedt]

On Wed, 19 Sep 2018 08:07:06 +0200
Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:

> On Tue, Sep 18, 2018 at 07:14:13PM -0400, Steven Rostedt wrote:
> > 
> > Linus (aka Greg),
> > 
> > Vaibhav Nagarnaik found that modifying the ring buffer size could cause
> > a huge latency in the system because it does a while loop to free pages
> > without releasing the CPU (on non preempt kernels). In a case where there
> > are hundreds of thousands of pages to free it could actually cause a system
> > stall. A properly place cond_resched() solves this issue.
> > 
> > 
> > Please pull the latest trace-v4.19-rc4 tree, which can be found at:
> > 
> > 
> >   git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
> > trace-v4.19-rc4  
> 
> Ick, line wrapping makes it hard to cut/paste :(

??

That's the way I have always posted pull requests. I place the branch
on the second line. It's not line wrapped, it's a hard coded new line.
Long ago I was told to do it that way.

Should that be changed? It would be trivial to update my scripts.

> 
> Anyway, now pulled and pushed out.

Thanks,

-- Steve