On Mon, Jul 3, 2023 at 10:04 PM Athira Rajeev
<atraj...@linux.vnet.ibm.com> wrote:
>
>
>
> > On 15-Jun-2023, at 1:08 PM, Athira Rajeev <atraj...@linux.vnet.ibm.com>
> > wrote:
> >
> > Perf all metrics test fails as below when perf_event access
> > is restricted.
> >
> > ./perf test -v "perf all metrics test"
> > Metric 'Memory_RD_BW_Chip' not printed in:
> > Error:
> > Access to performance monitoring and observability operations is limited.
> > Enforced MAC policy settings (SELinux) can limit access to performance
> > —
> > access to performance monitoring and observability operations for
> > processes
> > without CAP_PERFMON, CAP_SYS_PTRACE or CAP_SYS_ADMIN Linux capability.
> > —
> > test child finished with -1
> > ---- end ----
> > perf all metrics test: FAILED!
In my system, it fails like below:
$ ./perf test -v 101
101: perf all metrics test :
--- start ---
test child forked, pid 398458
Testing branch_misprediction_ratio
Testing all_remote_links_outbound
Metric 'all_remote_links_outbound' not printed in:
Error:
Invalid event (remote_outbound_data_controller_3:u) in per-thread
mode, enable system wide with '-a'.
Testing nps1_die_to_dram
...
Thanks,
Namhyung
>
>
> Hi,
>
> Looking for review comments on this patch.
>
> Thanks
> >
> > The perf all metrics test picks the input events from
> > "perf list --raw-dump metrics" and runs "perf stat -M "$m""
> > for each of the metrics in the list. It fails here for some
> > of the metrics which needs access, since it collects system
> > wide resource details/statistics. Fix the testcase to skip
> > those metric events.
> >
> > Signed-off-by: Athira Rajeev <atraj...@linux.vnet.ibm.com>
> > ---
> > tools/perf/tests/shell/stat_all_metrics.sh | 4 +++-
> > 1 file changed, 3 insertions(+), 1 deletion(-)
> >
> > diff --git a/tools/perf/tests/shell/stat_all_metrics.sh
> > b/tools/perf/tests/shell/stat_all_metrics.sh
> > index 54774525e18a..14b96484a359 100755
> > --- a/tools/perf/tests/shell/stat_all_metrics.sh
> > +++ b/tools/perf/tests/shell/stat_all_metrics.sh
> > @@ -6,7 +6,9 @@ err=0
> > for m in $(perf list --raw-dump metrics); do
> > echo "Testing $m"
> > result=$(perf stat -M "$m" true 2>&1)
> > - if [[ "$result" =~ ${m:0:50} ]] || [[ "$result" =~ "<not supported>" ]]
> > + # Skip if there is no access to perf_events monitoring
> > + # and observability operations
> > + if [[ "$result" =~ ${m:0:50} ]] || [[ "$result" =~ "<not supported>" ]]
> > || [[ "$result" =~ "Access to performance monitoring and observability
> > operations is limited" ]]
> > then
> > continue
> > fi
> > --
> > 2.31.1
> >
>
