Messages in this thread | | | Date | Sun, 30 Dec 2007 15:53:04 +0100 | From | Ingo Molnar <> | Subject | Re: [BUG] 2.6.21-rc1,2,3 regressions on my system that I found so far |
| |
* Mike Galbraith <efault@gmx.de> wrote:
> > Is this after resume ? If yes, then something (probably BIOS) is > > fiddling with the TSC of one CPU when the resume happens. > > My P4 box has the same "problem", which is remedied by..
> - start = get_cycles_sync(); > + start = last_tsc = get_cycles_sync();
this is slightly racy - your second patch that initializes things properly is the right solution IMO. I'm wondering, if others are seeing this too, should we make this a v2.6.24 item? It's a bit late for that i think - although it shouldnt hurt.
Ingo
| |