mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-15 00:34:10 +08:00
33dd70752c
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>
19 lines
400 B
C
19 lines
400 B
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/* identifiers for device / performance-differentiated memory regions */
|
|
#include <linux/idr.h>
|
|
#include <linux/types.h>
|
|
|
|
static DEFINE_IDA(memregion_ids);
|
|
|
|
int memregion_alloc(gfp_t gfp)
|
|
{
|
|
return ida_alloc(&memregion_ids, gfp);
|
|
}
|
|
EXPORT_SYMBOL(memregion_alloc);
|
|
|
|
void memregion_free(int id)
|
|
{
|
|
ida_free(&memregion_ids, id);
|
|
}
|
|
EXPORT_SYMBOL(memregion_free);
|