1eeb66a1bb
This patch moves the die notifier handling to common code. Previous various architectures had exactly the same code for it. Note that the new code is compiled unconditionally, this should be understood as an appel to the other architecture maintainer to implement support for it aswell (aka sprinkling a notify_die or two in the proper place) arm had a notifiy_die that did something totally different, I renamed it to arm_notify_die as part of the patch and made it static to the file it's declared and used at. avr32 used to pass slightly less information through this interface and I brought it into line with the other architectures. [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: fix vmalloc_sync_all bustage] [bryan.wu@analog.com: fix vmalloc_sync_all in nommu] Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: <linux-arch@vger.kernel.org> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
#ifndef _LINUX_VMALLOC_H
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#define _LINUX_VMALLOC_H
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#include <linux/spinlock.h>
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#include <asm/page.h> /* pgprot_t */
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struct vm_area_struct;
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/* bits in vm_struct->flags */
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#define VM_IOREMAP 0x00000001 /* ioremap() and friends */
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#define VM_ALLOC 0x00000002 /* vmalloc() */
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#define VM_MAP 0x00000004 /* vmap()ed pages */
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#define VM_USERMAP 0x00000008 /* suitable for remap_vmalloc_range */
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#define VM_VPAGES 0x00000010 /* buffer for pages was vmalloc'ed */
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/* bits [20..32] reserved for arch specific ioremap internals */
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/*
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* Maximum alignment for ioremap() regions.
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* Can be overriden by arch-specific value.
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*/
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#ifndef IOREMAP_MAX_ORDER
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#define IOREMAP_MAX_ORDER (7 + PAGE_SHIFT) /* 128 pages */
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#endif
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struct vm_struct {
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/* keep next,addr,size together to speedup lookups */
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struct vm_struct *next;
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void *addr;
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unsigned long size;
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unsigned long flags;
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struct page **pages;
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unsigned int nr_pages;
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unsigned long phys_addr;
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};
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/*
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* Highlevel APIs for driver use
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*/
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extern void *vmalloc(unsigned long size);
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extern void *vmalloc_user(unsigned long size);
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extern void *vmalloc_node(unsigned long size, int node);
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extern void *vmalloc_exec(unsigned long size);
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extern void *vmalloc_32(unsigned long size);
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extern void *vmalloc_32_user(unsigned long size);
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extern void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot);
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extern void *__vmalloc_area(struct vm_struct *area, gfp_t gfp_mask,
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pgprot_t prot);
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extern void vfree(void *addr);
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extern void *vmap(struct page **pages, unsigned int count,
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unsigned long flags, pgprot_t prot);
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extern void vunmap(void *addr);
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extern int remap_vmalloc_range(struct vm_area_struct *vma, void *addr,
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unsigned long pgoff);
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void vmalloc_sync_all(void);
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/*
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* Lowlevel-APIs (not for driver use!)
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*/
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extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags);
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extern struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
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unsigned long start, unsigned long end);
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extern struct vm_struct *get_vm_area_node(unsigned long size,
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unsigned long flags, int node,
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gfp_t gfp_mask);
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extern struct vm_struct *remove_vm_area(void *addr);
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extern int map_vm_area(struct vm_struct *area, pgprot_t prot,
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struct page ***pages);
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extern void unmap_vm_area(struct vm_struct *area);
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/*
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* Internals. Dont't use..
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*/
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extern rwlock_t vmlist_lock;
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extern struct vm_struct *vmlist;
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#endif /* _LINUX_VMALLOC_H */
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