https://github.com/torvalds/linux
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Tip revision: 64570fbc14f8d7cb3fe3995f20e26bc25ce4b2cc authored by Linus Torvalds on 11 October 2021, 00:01:59 UTC
Linux 5.15-rc5
Tip revision: 64570fb
sparsemem.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_IA64_SPARSEMEM_H
#define _ASM_IA64_SPARSEMEM_H

#ifdef CONFIG_SPARSEMEM
#include <asm/page.h>
/*
 * SECTION_SIZE_BITS            2^N: how big each section will be
 * MAX_PHYSMEM_BITS             2^N: how much memory we can have in that space
 */

#define SECTION_SIZE_BITS	(30)
#define MAX_PHYSMEM_BITS	(50)
#ifdef CONFIG_FORCE_MAX_ZONEORDER
#if ((CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT) > SECTION_SIZE_BITS)
#undef SECTION_SIZE_BITS
#define SECTION_SIZE_BITS (CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT)
#endif
#endif

#endif /* CONFIG_SPARSEMEM */

#ifdef CONFIG_MEMORY_HOTPLUG
int memory_add_physaddr_to_nid(u64 addr);
#define memory_add_physaddr_to_nid memory_add_physaddr_to_nid
#endif

#endif /* _ASM_IA64_SPARSEMEM_H */
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