On Mon, Mar 9, 2020 at 11:05 AM Stephen Kitt <steve@xxxxxxx> wrote: > > Based on the implementation in kernel/bpf/syscall.c, > kernel/bpf/trampoline.c, include/linux/filter.h, and the documentation > in bpftool-prog.rst. > > The section style doesn't match the surrounding sections; it matches > the style of the reworked kernel.rst queued up in docs-next. > > Signed-off-by: Stephen Kitt <steve@xxxxxxx> > --- > > Notes: > Changes since v1: > - rebased on bpf-next instead of docs-next. > > Documentation/admin-guide/sysctl/kernel.rst | 24 +++++++++++++++++++++ > 1 file changed, 24 insertions(+) > > diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst > index def074807cee..eea7afd509ac 100644 > --- a/Documentation/admin-guide/sysctl/kernel.rst > +++ b/Documentation/admin-guide/sysctl/kernel.rst > @@ -174,6 +174,20 @@ See the type_of_loader and ext_loader_ver fields in > Documentation/x86/boot.rst for additional information. > > > +bpf_stats_enabled > +================= > + > +Controls whether the kernel should collect statistics on BPF programs > +(total time spent running, number of times run...). Enabling > +statistics causes a slight reduction in performance on each program > +run. The statistics can be seen using ``bpftool``. > + > += =================================== > +0 Don't collect statistics (default). > +1 Collect statistics. > += =================================== > + > + > cap_last_cap: > ============= > > @@ -1123,6 +1137,16 @@ NMI switch that most IA32 servers have fires unknown NMI up, for > example. If a system hangs up, try pressing the NMI switch. > > > +unprivileged_bpf_disabled > +========================= > + > +Writing 1 to this entry will disabled unprivileged calls to ``bpf()``; same typo as was pointed out earlier.
