AcoSail/kernel_optimize_test
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pmem, memremap: convert to numa aware allocations

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Given that pmem ranges come with numa-locality hints, arrange for the
resulting driver objects to be obtained from node-local memory.

Reviewed-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2015-10-05 20:35:56 -04:00
parent 7eff93b7c9
commit 538ea4aa44
2 changed files with 7 additions and 5 deletions
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5
drivers/nvdimm/pmem.c
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@ -176,9 +176,10 @@ static void pmem_detach_disk(struct pmem_device *pmem)
static int pmem_attach_disk(struct device *dev,
struct nd_namespace_common *ndns, struct pmem_device *pmem)
{
int nid = dev_to_node(dev);
struct gendisk *disk;
pmem->pmem_queue = blk_alloc_queue(GFP_KERNEL);
pmem->pmem_queue = blk_alloc_queue_node(GFP_KERNEL, nid);
if (!pmem->pmem_queue)
return -ENOMEM;
@ -188,7 +189,7 @@ static int pmem_attach_disk(struct device *dev,
blk_queue_bounce_limit(pmem->pmem_queue, BLK_BOUNCE_ANY);
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, pmem->pmem_queue);
disk = alloc_disk(0);
disk = alloc_disk_node(0, nid);
if (!disk) {
blk_cleanup_queue(pmem->pmem_queue);
return -ENOMEM;

7
kernel/memremap.c
View File

@ -114,7 +114,8 @@ void *devm_memremap(struct device *dev, resource_size_t offset,
{
void **ptr, *addr;
ptr = devres_alloc(devm_memremap_release, sizeof(*ptr), GFP_KERNEL);
ptr = devres_alloc_node(devm_memremap_release, sizeof(*ptr), GFP_KERNEL,
dev_to_node(dev));
if (!ptr)
return ERR_PTR(-ENOMEM);
@ -165,8 +166,8 @@ void *devm_memremap_pages(struct device *dev, struct resource *res)
if (is_ram == REGION_INTERSECTS)
return __va(res->start);
page_map = devres_alloc(devm_memremap_pages_release,
sizeof(*page_map), GFP_KERNEL);
page_map = devres_alloc_node(devm_memremap_pages_release,
sizeof(*page_map), GFP_KERNEL, dev_to_node(dev));
if (!page_map)
return ERR_PTR(-ENOMEM);