On Mon, 2016-11-28 at 09:56 +0100, Borislav Petkov wrote: > On Tue, Nov 22, 2016 at 12:23:56PM -0800, Tim Chen wrote: > > > > Intel Turbo Boost Max Technology 3.0 (ITMT) feature > > allows some cores to be boosted to higher turbo > > frequency than others. > > > > Add /proc/sys/kernel/sched_itmt_enabled so operator > > can enable/disable scheduling of tasks that favor cores > > with higher turbo boost frequency potential. > > > > By default, system that is ITMT capable and single > > socket has this feature turned on. It is more likely > > to be lightly loaded and operates in Turbo range. > > > > When there is a change in the ITMT scheduling operation > > desired, a rebuild of the sched domain is initiated > > so the scheduler can set up sched domains with appropriate > > flag to enable/disable ITMT scheduling operations. > > > > Co-developed-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> > > Co-developed-by: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx> > > Signed-off-by: Tim Chen <tim.c.chen@xxxxxxxxxxxxxxx> > > --- > > arch/x86/include/asm/topology.h | 7 ++- > > arch/x86/kernel/itmt.c | 108 +++++++++++++++++++++++++++++++++++++++- > > 2 files changed, 112 insertions(+), 3 deletions(-) > ... > > > > > +/* > > + * Boolean to control whether we want to move processes to cpu capable > > + * of higher turbo frequency for cpus supporting Intel Turbo Boost Max > > + * Technology 3.0. > > + * > > + * It can be set via /proc/sys/kernel/sched_itmt_enabled > > + */sched_autogroup_enabled > > +unsigned int __read_mostly sysctl_sched_itmt_enabled; > Err, can we not have the boolean in the name itself? > > I.e., have it called sysctl_sched_itmt and 1 means enabled and 0 > disabled? I.e., the classic thing. :) > > Ditto for the sysctl name? I am following the convention in /proc/sys/kernel/sched_autogroup_enabled and sysctl_sched_autogroup_enabled that's also in /proc/sys/kernel. Thanks. Tim -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
