On Wed, May 23, 2007 at 09:27:40AM +1000, Rusty Russell wrote:
> On Tue, 2007-05-22 at 17:38 -0500, Matt Mackall wrote:
> > [ 0.120007] EIP is at resync_sc_freq+0x4b/0x56
>
> Hi Matt,
>
> Thanks for the report! Andrew should have these two patches queued,
> but here they are again:
>
> 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]>
>
> ---
> arch/i386/kernel/sched-clock.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> ===================================================================
> --- a/arch/i386/kernel/sched-clock.c
> +++ b/arch/i386/kernel/sched-clock.c
> @@ -103,7 +103,7 @@ static void resync_sc_freq(struct sc_dat
> 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;
> }
Looks like this one got lost in rc3-mm1.
--
Mathematics is the supreme nostalgia of our time.
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