On 3 March 2017 at 21:41, Lina Iyer <lina.iyer@xxxxxxxxxx> wrote: > Define and add Generic PM domains (genpd) for CPU clusters. Many new > SoCs group CPUs as clusters. Clusters share common resources like power > rails, caches, VFP, Coresight etc. When all CPUs in the cluster are > idle, these shared resources may also be put in their idle state. > > CPUs may be associated with their domain providers. The domains in > turn may be associated with their providers. This is clean way to model > the cluster hierarchy like that of ARM's big.little architecture. > > Platform drivers may initialize generic PM domains and setup the CPU PM > domains for the genpd and attach CPUs to the domain. In the following > patches, the CPUs are hooked up to runtime PM framework which helps > power down the domain, when all the CPUs in the domain are idle. > > Cc: Ulf Hansson <ulf.hansson@xxxxxxxxxx> > Suggested-by: Kevin Hilman <khilman@xxxxxxxxxx> > Signed-off-by: Lina Iyer <lina.iyer@xxxxxxxxxx> > --- > drivers/base/power/Makefile | 2 +- > drivers/base/power/cpu_domains.c | 192 +++++++++++++++++++++++++++++++++++++++ > include/linux/cpu_domains.h | 48 ++++++++++ > 3 files changed, 241 insertions(+), 1 deletion(-) > create mode 100644 drivers/base/power/cpu_domains.c > create mode 100644 include/linux/cpu_domains.h > > diff --git a/drivers/base/power/Makefile b/drivers/base/power/Makefile > index 5998c53..ee383f1 100644 > --- a/drivers/base/power/Makefile > +++ b/drivers/base/power/Makefile > @@ -2,7 +2,7 @@ obj-$(CONFIG_PM) += sysfs.o generic_ops.o common.o qos.o runtime.o wakeirq.o > obj-$(CONFIG_PM_SLEEP) += main.o wakeup.o > obj-$(CONFIG_PM_TRACE_RTC) += trace.o > obj-$(CONFIG_PM_OPP) += opp/ > -obj-$(CONFIG_PM_GENERIC_DOMAINS) += domain.o domain_governor.o > +obj-$(CONFIG_PM_GENERIC_DOMAINS) += domain.o domain_governor.o cpu_domains.o One more thing that I wonder about. Isn't cpu_domains relying on CONFIG_PM_GENERIC_DOMAINS_OF to work? Perhaps it's just better to build for that case? [...] Kind regards Uffe -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
