Rafael, does patch1 look ok to you? On Tue, Jun 9, 2015 at 4:10 PM, Toshi Kani <toshi.kani@xxxxxx> wrote: > Since NVDIMMs are installed on memory slots, they expose the NUMA > topology of a platform. This patchset adds support of sysfs > 'numa_node' to I/O-related NVDIMM devices under /sys/bus/nd/devices. > This enables numactl(8) to accept 'block:' and 'file:' paths of > pmem and btt devices as shown in the examples below. > numactl --preferred block:pmem0 --show > numactl --preferred file:/dev/pmem0s --show > > numactl can be used to bind an application to the locality of > a target NVDIMM for better performance. Here is a result of fio > benchmark to ext4/dax on an HP DL380 with 2 sockets for local and > remote settings. > > Local [1] : 4098.3MB/s > Remote [2]: 3718.4MB/s > > [1] numactl --preferred block:pmem0 --cpunodebind block:pmem0 fio <fs-on-pmem0> > [2] numactl --preferred block:pmem1 --cpunodebind block:pmem1 fio <fs-on-pmem0> > > Patch 1/3 applies on top of the acpica branch of the pm tree. > Patch 2/3-3/3 apply on top of Dan Williams's v5 patch series of > "libnvdimm: non-volatile memory devices". > > --- > v2: > - Add acpi_map_pxm_to_online_node(), which returns an online node. > - Manage visibility of sysfs numa_node with is_visible. (Dan Williams) > - Check ACPI_NFIT_PROXIMITY_VALID in spa->flags. > > --- > Toshi Kani (3): > 1/3 acpi: Add acpi_map_pxm_to_online_node() > 2/3 libnvdimm: Set numa_node to NVDIMM devices > 3/3 libnvdimm: Add sysfs numa_node to NVDIMM devices > > --- > drivers/acpi/nfit.c | 7 +++++++ > drivers/acpi/numa.c | 40 +++++++++++++++++++++++++++++++++++++--- > drivers/nvdimm/btt.c | 2 ++ > drivers/nvdimm/btt_devs.c | 1 + > drivers/nvdimm/bus.c | 30 ++++++++++++++++++++++++++++++ > drivers/nvdimm/namespace_devs.c | 1 + > drivers/nvdimm/nd.h | 1 + > drivers/nvdimm/region.c | 1 + > drivers/nvdimm/region_devs.c | 1 + > include/linux/acpi.h | 5 +++++ > include/linux/libnvdimm.h | 2 ++ > 11 files changed, 88 insertions(+), 3 deletions(-) -- 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
