question on FSL_EMB perf
Peter Zijlstra
peterz at infradead.org
Thu Jun 11 07:14:58 AEST 2015
On Wed, 2015-06-10 at 15:13 -0500, Scott Wood wrote:
> What sort of "nesting nonsense" would we get on ppc32? I wasn't
> trying to say that the pseudo-NMIs didn't count -- I was pointing out
> that we don't even have that on ppc32.
Oh, I was not aware ppc32 did not have that.
> > # git grep nmi_enter arch/powerpc/
> > arch/powerpc/perf/core-book3s.c: nmi_enter();
> > arch/powerpc/perf/core-fsl-emb.c: nmi_enter();
>
> nmi_enter() only gets called when perf_intr_is_nmi() returns non-zero,
> which only happens on ppc64.
ok, so fsl-emb is ppc32 and ppc64, not confusing at all this stuff.
More information about the Linuxppc-dev
mailing list