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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
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/* identifiers for device / performance-differentiated memory regions */
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#include <linux/idr.h>
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#include <linux/types.h>
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static DEFINE_IDA(memregion_ids);
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int memregion_alloc(gfp_t gfp)
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{
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return ida_alloc(&memregion_ids, gfp);
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}
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EXPORT_SYMBOL(memregion_alloc);
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void memregion_free(int id)
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{
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ida_free(&memregion_ids, id);
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}
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EXPORT_SYMBOL(memregion_free);
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