On Fri, 25 May 2007 10:45:47 +0200 Andi Kleen <[email protected]> wrote:
> On Fri, May 25, 2007 at 10:44:26AM +0200, Ingo Molnar wrote:
> >
> > * Andi Kleen <[email protected]> wrote:
> >
> > > > arch/i386/kernel/sched-clock.c (now built on x86_64 too with the
> > > > patch i sent) uses the tsc_disable global flag which is non-existent
> > > > on x86_64. So my tsc.h change adds that global flag, always-defined
> > > > to 0.
> > >
> > > My version of sched_clock.c doesn't have any reference to tsc_disable.
> >
> > must be an -mm fix. I used -mm as a basis of my work. Please apply my
> > patch.
>
> I would prefer to find out why the mm patch was added and then hopefully
> remove it. IMNSHO it should not be needed.
>
This? I sent it to you earlier this week:
From: Rusty Russell <[email protected]>
If you set tsc_disable (eg "notsc" on cmdline), sched-clock.c gives a
divide by zero on boot.
Signed-off-by: Rusty Russell <[email protected]>
Cc: Andi Kleen <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
---
arch/i386/kernel/sched-clock.c | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
diff -puN arch/i386/kernel/sched-clock.c~fix-x86_64-mm-sched-clock-share arch/i386/kernel/sched-clock.c
--- a/arch/i386/kernel/sched-clock.c~fix-x86_64-mm-sched-clock-share
+++ a/arch/i386/kernel/sched-clock.c
@@ -115,7 +115,7 @@ unsigned long long printk_clock(void)
static void resync_sc_freq(struct sc_data *sc, unsigned int newfreq)
{
sc->sync_base = jiffies;
- if (!cpu_has_tsc) {
+ if (!cpu_has_tsc || tsc_disable) {
sc->unstable = 1;
return;
}
_
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
