diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2019-11-06 17:43:31 -0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-11-07 15:44:29 +0100 |
| commit | 33dd70752cd76f4d883a165a674f13121a4155ed (patch) | |
| tree | fd7d361649e73adafe59ade9db9429a1be4e0516 /drivers/nvdimm/region_devs.c | |
| parent | 199c8471761273b7e287914cee968ddf21dfbfe0 (diff) | |
lib: Uplevel the pmem "region" ida to a global allocator
In preparation for handling platform differentiated memory types beyond
persistent memory, uplevel the "region" identifier to a global number
space. This enables a device-dax instance to be registered to any memory
type with guaranteed unique names.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/nvdimm/region_devs.c')
| -rw-r--r-- | drivers/nvdimm/region_devs.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c index ef423ba1a711..fbf34cf688f4 100644 --- a/drivers/nvdimm/region_devs.c +++ b/drivers/nvdimm/region_devs.c @@ -3,6 +3,7 @@ * Copyright(c) 2013-2015 Intel Corporation. All rights reserved. */ #include <linux/scatterlist.h> +#include <linux/memregion.h> #include <linux/highmem.h> #include <linux/sched.h> #include <linux/slab.h> @@ -19,7 +20,6 @@ */ #include <linux/io-64-nonatomic-hi-lo.h> -static DEFINE_IDA(region_ida); static DEFINE_PER_CPU(int, flush_idx); static int nvdimm_map_flush(struct device *dev, struct nvdimm *nvdimm, int dimm, @@ -133,7 +133,7 @@ static void nd_region_release(struct device *dev) put_device(&nvdimm->dev); } free_percpu(nd_region->lane); - ida_simple_remove(®ion_ida, nd_region->id); + memregion_free(nd_region->id); if (is_nd_blk(dev)) kfree(to_nd_blk_region(dev)); else @@ -985,7 +985,7 @@ static struct nd_region *nd_region_create(struct nvdimm_bus *nvdimm_bus, if (!region_buf) return NULL; - nd_region->id = ida_simple_get(®ion_ida, 0, 0, GFP_KERNEL); + nd_region->id = memregion_alloc(GFP_KERNEL); if (nd_region->id < 0) goto err_id; @@ -1044,7 +1044,7 @@ static struct nd_region *nd_region_create(struct nvdimm_bus *nvdimm_bus, return nd_region; err_percpu: - ida_simple_remove(®ion_ida, nd_region->id); + memregion_free(nd_region->id); err_id: kfree(region_buf); return NULL; @@ -1216,8 +1216,3 @@ int nd_region_conflict(struct nd_region *nd_region, resource_size_t start, return device_for_each_child(&nvdimm_bus->dev, &ctx, region_conflict); } - -void __exit nd_region_devs_exit(void) -{ - ida_destroy(®ion_ida); -} |