summaryrefslogtreecommitdiff
path: root/include/linux/vmalloc.h
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/linux/vmalloc.h
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/linux/vmalloc.h')
-rw-r--r--include/linux/vmalloc.h54
1 files changed, 54 insertions, 0 deletions
diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
new file mode 100644
index 000000000000..3a358c895188
--- /dev/null
+++ b/include/linux/vmalloc.h
@@ -0,0 +1,54 @@
+#ifndef _LINUX_VMALLOC_H
+#define _LINUX_VMALLOC_H
+
+#include <linux/spinlock.h>
+#include <asm/page.h> /* pgprot_t */
+
+/* bits in vm_struct->flags */
+#define VM_IOREMAP 0x00000001 /* ioremap() and friends */
+#define VM_ALLOC 0x00000002 /* vmalloc() */
+#define VM_MAP 0x00000004 /* vmap()ed pages */
+/* bits [20..32] reserved for arch specific ioremap internals */
+
+struct vm_struct {
+ void *addr;
+ unsigned long size;
+ unsigned long flags;
+ struct page **pages;
+ unsigned int nr_pages;
+ unsigned long phys_addr;
+ struct vm_struct *next;
+};
+
+/*
+ * Highlevel APIs for driver use
+ */
+extern void *vmalloc(unsigned long size);
+extern void *vmalloc_exec(unsigned long size);
+extern void *vmalloc_32(unsigned long size);
+extern void *__vmalloc(unsigned long size, unsigned int __nocast gfp_mask, pgprot_t prot);
+extern void *__vmalloc_area(struct vm_struct *area, unsigned int __nocast gfp_mask, pgprot_t prot);
+extern void vfree(void *addr);
+
+extern void *vmap(struct page **pages, unsigned int count,
+ unsigned long flags, pgprot_t prot);
+extern void vunmap(void *addr);
+
+/*
+ * Lowlevel-APIs (not for driver use!)
+ */
+extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags);
+extern struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
+ unsigned long start, unsigned long end);
+extern struct vm_struct *remove_vm_area(void *addr);
+extern int map_vm_area(struct vm_struct *area, pgprot_t prot,
+ struct page ***pages);
+extern void unmap_vm_area(struct vm_struct *area);
+
+/*
+ * Internals. Dont't use..
+ */
+extern rwlock_t vmlist_lock;
+extern struct vm_struct *vmlist;
+
+#endif /* _LINUX_VMALLOC_H */