lkml.org 
[lkml]   [2019]   [Mar]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC][PATCH] tracing/x86: Save CR2 before tracing irqsoff on error_entry
On Thu, Mar 21, 2019 at 02:10:20PM -0400, Steven Rostedt wrote:
> On Thu, 21 Mar 2019 11:05:06 -0700
> Andy Lutomirski <luto@amacapital.net> wrote:
>
> > In the long run, I think the right solution is to rewrite even more of
> > this mess in C. We really ought to be able to put the IRQ flag
> > tracing and the context tracking into C code.
>
> And once we do that, we can work on getting the irq tracing
> incorporated into a jump_label type that we could possibly enable
> lockdep at start up, and then disable it later, even on production
> systems! That is, to be able to turn it off and bring the system back
> up to full speed.

You forget the stupid amount of data bloat that lockdep brings.

\
 
 \ /
  Last update: 2019-03-21 19:29    [W:0.128 / U:17.552 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site