Hi,
Is there any plans or may be even progress on that so far? Thanks, Alexey On 26.06.2018 18:36, Tvrtko Ursulin wrote: > From: Tvrtko Ursulin <[email protected]> > > For situations where sysadmins might want to allow different level of > access control for different PMUs, we start creating per-PMU > perf_event_paranoid controls in sysfs. > > These work in equivalent fashion as the existing perf_event_paranoid > sysctl, which now becomes the parent control for each PMU. > > On PMU registration the global/parent value will be inherited by each PMU, > as it will be propagated to all registered PMUs when the sysctl is > updated. > > At any later point individual PMU access controls, located in > <sysfs>/device/<pmu-name>/perf_event_paranoid, can be adjusted to achieve > fine grained access control. > > Discussion from previous posting: > https://lkml.org/lkml/2018/5/21/156 > > Cc: Thomas Gleixner <[email protected]> > Cc: Peter Zijlstra <[email protected]> > Cc: Ingo Molnar <[email protected]> > Cc: "H. Peter Anvin" <[email protected]> > Cc: Arnaldo Carvalho de Melo <[email protected]> > Cc: Alexander Shishkin <[email protected]> > Cc: Jiri Olsa <[email protected]> > Cc: Namhyung Kim <[email protected]> > Cc: Madhavan Srinivasan <[email protected]> > Cc: Andi Kleen <[email protected]> > Cc: Alexey Budankov <[email protected]> > Cc: [email protected] > Cc: [email protected] > > Tvrtko Ursulin (4): > perf: Move some access checks later in perf_event_open > perf: Pass pmu pointer to perf_paranoid_* helpers > perf: Allow per PMU access control > perf Documentation: Document the per PMU perf_event_paranoid interface > > .../sysfs-bus-event_source-devices-events | 14 +++ > arch/powerpc/perf/core-book3s.c | 2 +- > arch/x86/events/intel/bts.c | 2 +- > arch/x86/events/intel/core.c | 2 +- > arch/x86/events/intel/p4.c | 2 +- > include/linux/perf_event.h | 18 ++- > kernel/events/core.c | 104 +++++++++++++++--- > kernel/sysctl.c | 4 +- > kernel/trace/trace_event_perf.c | 6 +- > 9 files changed, 123 insertions(+), 31 deletions(-) >
