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[209.85.220.65]) by mx.google.com with SMTPS id p24sor10702671otl.112.2019.02.20.14.04.30 for (Google Transport Security); Wed, 20 Feb 2019 14:04:30 -0800 (PST) Received-SPF: pass (google.com: domain of rjwysocki@gmail.com designates 209.85.220.65 as permitted sender) client-ip=209.85.220.65; Authentication-Results: mx.google.com; spf=pass (google.com: domain of rjwysocki@gmail.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=rjwysocki@gmail.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org X-Google-Smtp-Source: AHgI3IZ/5ZrH44I/xQLpQFBA1eX0LciDDyBHLZxZPOE/gs0KhKqDjYxda9HRw9mda9P291ig5HLaXDSGrqCQI+OfHK8= X-Received: by 2002:a9d:5e8c:: with SMTP id f12mr23391011otl.343.1550700270606; Wed, 20 Feb 2019 14:04:30 -0800 (PST) MIME-Version: 1.0 References: <20190214171017.9362-1-keith.busch@intel.com> <20190214171017.9362-9-keith.busch@intel.com> In-Reply-To: <20190214171017.9362-9-keith.busch@intel.com> From: "Rafael J. Wysocki" Date: Wed, 20 Feb 2019 23:04:19 +0100 Message-ID: Subject: Re: [PATCHv6 08/10] acpi/hmat: Register performance attributes To: Keith Busch Cc: Linux Kernel Mailing List , ACPI Devel Maling List , Linux Memory Management List , Linux API , Greg Kroah-Hartman , Rafael Wysocki , Dave Hansen , Dan Williams Content-Type: text/plain; charset="UTF-8" X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, Feb 14, 2019 at 6:10 PM Keith Busch wrote: > > Save the best performance access attributes and register these with the > memory's node if HMAT provides the locality table. While HMAT does make > it possible to know performance for all possible initiator-target > pairings, we export only the local pairings at this time. > > Signed-off-by: Keith Busch Acked-by: Rafael J. Wysocki > --- > drivers/acpi/hmat/hmat.c | 17 ++++++++++++++++- > 1 file changed, 16 insertions(+), 1 deletion(-) > > diff --git a/drivers/acpi/hmat/hmat.c b/drivers/acpi/hmat/hmat.c > index b29f7160c7bb..6833c4897ff4 100644 > --- a/drivers/acpi/hmat/hmat.c > +++ b/drivers/acpi/hmat/hmat.c > @@ -549,12 +549,27 @@ static __init void hmat_register_target_initiators(struct memory_target *target) > } > } > > +static __init void hmat_register_target_perf(struct memory_target *target) > +{ > + unsigned mem_nid = pxm_to_node(target->memory_pxm); > + > + if (!target->hmem_attrs.read_bandwidth && > + !target->hmem_attrs.read_latency && > + !target->hmem_attrs.write_bandwidth && > + !target->hmem_attrs.write_latency) > + return; > + > + node_set_perf_attrs(mem_nid, &target->hmem_attrs, 0); > +} > + > static __init void hmat_register_targets(void) > { > struct memory_target *target; > > - list_for_each_entry(target, &targets, node) > + list_for_each_entry(target, &targets, node) { > hmat_register_target_initiators(target); > + hmat_register_target_perf(target); > + } > } > > static __init void hmat_free_structures(void) > -- > 2.14.4 >