[LTP] [PATCH] pt_test: skip pt_disable_branch on Broadwell CPUs
Jan Stancek
jstancek@redhat.com
Mon Nov 4 16:55:07 CET 2019
----- Original Message -----
> Hi Jan,
>
> > commit d35869ba348d ("perf/x86/intel/pt: Allow the disabling of branch
> > tracing")
> > disallows not setting BRANCH_EN due to erratum BDM106 on Broadwell CPUs.
>
> > Signed-off-by: Jan Stancek <jstancek@redhat.com>
> Reviewed-by: Petr Vorel <pvorel@suse.cz>
Pushed.
>
> ...
> > @@ -145,6 +171,11 @@ static void setup(void)
> > attr.size = sizeof(struct perf_event_attr);
> > attr.mmap = 1;
> > if (str_branch_flag) {
> > + if (is_affected_by_erratum_BDM106()) {
> > + tst_brk(TCONF, "erratum BDM106 disallows not "
> > + "setting BRANCH_EN on this CPU");
> I'd join string (to be on single line), even it's longer than 80.
> (better for grep)
>
> Kind regards,
> Petr
>
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