Hi Jean-Michel,
On Wed, Oct 23, 2024 at 11:07 AM Jean-Michel Hautbois
<jeanmichel.hautb...@yoseli.org> wrote:
> On 23/10/2024 10:47, Steven Rostedt wrote:
> > On Tue, 22 Oct 2024 11:21:34 +0200
> > Jean-Michel Hautbois <jeanmichel.hautb...@yoseli.org> wrote:
> >> I was not really expecting you to review the m68k one no :-).
> >> I think I have other issues which might have impact on ftrace too.
> >> For instance, when I launch cyclictest I have a warning about HRTIMERS:
> >> # cyclictest -p 99
> >> WARN: stat /dev/cpu_dma_latency failed: No such file or directory
> >> WARN: High resolution timers not available
> >> policy: fifo: loadavg: 1.21 0.40 0.14 1/122 245
> >>
> >> T: 0 ( 245) P:99 I:1000 C: 11203 Min: 92 Act: 623 Avg: 775 Max:
> >> 3516
> >>
> >> The latencies are quite high...
> >
> > Yes, if you don't have high resolution timers, the latency will be high.
>
> According to my config, I should have those:
> CONFIG_HIGH_RES_TIMERS=y
Does your hardware have a high resolution timer, and do you have
a driver for it?
$ git grep hrtimer -- arch/m68k/
$
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- ge...@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
