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Re: perf hw in kexeced kernel broken in tip
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From: Eric W. Biederman
Subject:
Re: perf hw in kexeced kernel broken in tip
Date: Wednesday, December 8, 2010 - 4:20 pm
Don Zickus <dzickus@redhat.com> writes:
quoted text
> On Wed, Dec 08, 2010 at 03:59:16PM +0100, Peter Zijlstra wrote: >> On Wed, 2010-12-08 at 15:20 +0100, Peter Zijlstra wrote: >> >> > > I wonder if you should reverse these checks. If the bios has the perf >> > > counter enabled, there might be a high chance that it fails the first >> > > check and never gets to the actually bios checks. >> > >> > Ah, good point. >> >> Something like so.. > > This seems to work correctly on my Nehalem and broken bios machines during > boot and kexec. As expected it fails during kdump. My p4 box failed > during kexec for some reason. But p4 has other issues.
Does the kdump kernel still boot? It looks like it should I just want to double check. Eric --
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Messages in current thread:
perf hw in kexeced kernel broken in tip
, Yinghai Lu
, (Wed Dec 1, 1:00 am)
Re: perf hw in kexeced kernel broken in tip
, Peter Zijlstra
, (Wed Dec 1, 4:27 am)
Re: perf hw in kexeced kernel broken in tip
, Vivek Goyal
, (Wed Dec 1, 9:06 am)
Re: perf hw in kexeced kernel broken in tip
, Peter Zijlstra
, (Wed Dec 1, 9:11 am)
Re: perf hw in kexeced kernel broken in tip
, Vivek Goyal
, (Wed Dec 1, 9:23 am)
Re: perf hw in kexeced kernel broken in tip
, Peter Zijlstra
, (Wed Dec 1, 12:38 pm)
Re: perf hw in kexeced kernel broken in tip
, Vivek Goyal
, (Wed Dec 1, 12:46 pm)
Re: perf hw in kexeced kernel broken in tip
, Peter Zijlstra
, (Wed Dec 1, 12:49 pm)
Re: perf hw in kexeced kernel broken in tip
, Vivek Goyal
, (Wed Dec 1, 12:58 pm)
Re: perf hw in kexeced kernel broken in tip
, Peter Zijlstra
, (Wed Dec 1, 1:07 pm)
Re: perf hw in kexeced kernel broken in tip
, Eric W. Biederman
, (Wed Dec 1, 1:41 pm)
Re: perf hw in kexeced kernel broken in tip
, Eric W. Biederman
, (Wed Dec 1, 2:48 pm)
Re: perf hw in kexeced kernel broken in tip
, Don Zickus
, (Wed Dec 1, 10:23 pm)
Re: perf hw in kexeced kernel broken in tip
, Peter Zijlstra
, (Thu Dec 2, 12:34 am)
Re: perf hw in kexeced kernel broken in tip
, Don Zickus
, (Thu Dec 2, 9:15 am)
Re: perf hw in kexeced kernel broken in tip
, Don Zickus
, (Tue Dec 7, 2:16 pm)
Re: perf hw in kexeced kernel broken in tip
, Peter Zijlstra
, (Tue Dec 7, 4:30 pm)
Re: perf hw in kexeced kernel broken in tip
, Yinghai Lu
, (Tue Dec 7, 5:26 pm)
Re: perf hw in kexeced kernel broken in tip
, Peter Zijlstra
, (Wed Dec 8, 3:39 am)
Re: perf hw in kexeced kernel broken in tip
, Don Zickus
, (Wed Dec 8, 7:01 am)
Re: perf hw in kexeced kernel broken in tip
, Peter Zijlstra
, (Wed Dec 8, 7:20 am)
Re: perf hw in kexeced kernel broken in tip
, Peter Zijlstra
, (Wed Dec 8, 7:33 am)
Re: perf hw in kexeced kernel broken in tip
, Vivek Goyal
, (Wed Dec 8, 7:39 am)
Re: perf hw in kexeced kernel broken in tip
, Vivek Goyal
, (Wed Dec 8, 7:42 am)
Re: perf hw in kexeced kernel broken in tip
, Peter Zijlstra
, (Wed Dec 8, 7:48 am)
Re: perf hw in kexeced kernel broken in tip
, Peter Zijlstra
, (Wed Dec 8, 7:59 am)
Re: perf hw in kexeced kernel broken in tip
, Vivek Goyal
, (Wed Dec 8, 8:02 am)
Re: perf hw in kexeced kernel broken in tip
, Peter Zijlstra
, (Wed Dec 8, 8:15 am)
Re: perf hw in kexeced kernel broken in tip
, Vivek Goyal
, (Wed Dec 8, 8:22 am)
Re: perf hw in kexeced kernel broken in tip
, Yinghai Lu
, (Wed Dec 8, 11:43 am)
Re: perf hw in kexeced kernel broken in tip
, Don Zickus
, (Wed Dec 8, 12:01 pm)
Re: perf hw in kexeced kernel broken in tip
, Yinghai Lu
, (Wed Dec 8, 12:05 pm)
Re: perf hw in kexeced kernel broken in tip
, Peter Zijlstra
, (Wed Dec 8, 12:06 pm)
Re: perf hw in kexeced kernel broken in tip
, Peter Zijlstra
, (Wed Dec 8, 12:17 pm)
Re: perf hw in kexeced kernel broken in tip
, Yinghai Lu
, (Wed Dec 8, 12:20 pm)
Re: perf hw in kexeced kernel broken in tip
, Yinghai Lu
, (Wed Dec 8, 12:20 pm)
Re: perf hw in kexeced kernel broken in tip
, Eric W. Biederman
, (Wed Dec 8, 2:16 pm)
Re: perf hw in kexeced kernel broken in tip
, Don Zickus
, (Wed Dec 8, 3:37 pm)
Re: perf hw in kexeced kernel broken in tip
, Eric W. Biederman
, (Wed Dec 8, 4:20 pm)
Re: perf hw in kexeced kernel broken in tip
, Don Zickus
, (Wed Dec 8, 9:34 pm)
Re: perf hw in kexeced kernel broken in tip
, Don Zickus
, (Thu Dec 9, 1:20 pm)
Re: perf hw in kexeced kernel broken in tip
, Cyrill Gorcunov
, (Thu Dec 9, 1:44 pm)
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