-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
/*
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
# include <linux/mm_inline.h>
#endif
-typedef struct page cfs_page_t;
-#define CFS_PAGE_SIZE PAGE_CACHE_SIZE
-#define CFS_PAGE_SHIFT PAGE_CACHE_SHIFT
-#define CFS_PAGE_MASK (~((__u64)CFS_PAGE_SIZE-1))
-
-#define cfs_num_physpages num_physpages
-
-#define cfs_copy_from_user(to, from, n) copy_from_user(to, from, n)
-#define cfs_copy_to_user(to, from, n) copy_to_user(to, from, n)
-
-static inline void *cfs_page_address(cfs_page_t *page)
-{
- /*
- * XXX nikita: do NOT call portals_debug_msg() (CDEBUG/ENTRY/EXIT)
- * from here: this will lead to infinite recursion.
- */
- return page_address(page);
-}
-
-static inline void *cfs_kmap(cfs_page_t *page)
-{
- return kmap(page);
-}
-
-static inline void cfs_kunmap(cfs_page_t *page)
-{
- kunmap(page);
-}
-
-static inline void cfs_get_page(cfs_page_t *page)
-{
- get_page(page);
-}
-
-static inline int cfs_page_count(cfs_page_t *page)
-{
- return page_count(page);
-}
-
-#define cfs_page_index(p) ((p)->index)
-
-/*
- * Memory allocator
- * XXX Liang: move these declare to public file
- */
-extern void *cfs_alloc(size_t nr_bytes, u_int32_t flags);
-extern void cfs_free(void *addr);
+#ifndef HAVE_LIBCFS_CPT
+/* Need this for cfs_cpt_table */
+#include <libcfs/libcfs_cpu.h>
+#endif
-extern void *cfs_alloc_large(size_t nr_bytes);
-extern void cfs_free_large(void *addr);
+#define CFS_PAGE_MASK (~((__u64)PAGE_CACHE_SIZE-1))
-extern cfs_page_t *cfs_alloc_pages(unsigned int flags, unsigned int order);
-extern void __cfs_free_pages(cfs_page_t *page, unsigned int order);
+#define page_index(p) ((p)->index)
-#define cfs_alloc_page(flags) cfs_alloc_pages(flags, 0)
-#define __cfs_free_page(page) __cfs_free_pages(page, 0)
-#define cfs_free_page(p) __free_pages(p, 0)
-#define cfs_memory_pressure_get() (current->flags & PF_MEMALLOC)
-#define cfs_memory_pressure_set() do { current->flags |= PF_MEMALLOC; } while (0)
-#define cfs_memory_pressure_clr() do { current->flags &= ~PF_MEMALLOC; } while (0)
+#define memory_pressure_get() (current->flags & PF_MEMALLOC)
+#define memory_pressure_set() do { current->flags |= PF_MEMALLOC; } while (0)
+#define memory_pressure_clr() do { current->flags &= ~PF_MEMALLOC; } while (0)
#if BITS_PER_LONG == 32
/* limit to lowmem on 32-bit systems */
-#define CFS_NUM_CACHEPAGES \
- min(cfs_num_physpages, 1UL << (30 - CFS_PAGE_SHIFT) * 3 / 4)
+#define NUM_CACHEPAGES \
+ min(totalram_pages, 1UL << (30 - PAGE_CACHE_SHIFT) * 3 / 4)
#else
-#define CFS_NUM_CACHEPAGES cfs_num_physpages
+#define NUM_CACHEPAGES totalram_pages
#endif
/*
* In Linux there is no way to determine whether current execution context is
* blockable.
*/
-#define CFS_ALLOC_ATOMIC_TRY CFS_ALLOC_ATOMIC
-
-/*
- * SLAB allocator
- * XXX Liang: move these declare to public file
- */
-#ifdef HAVE_KMEM_CACHE
-typedef struct kmem_cache cfs_mem_cache_t;
-#else
-typedef kmem_cache_t cfs_mem_cache_t;
+#define ALLOC_ATOMIC_TRY GFP_ATOMIC
+/* GFP_IOFS was added in 2.6.33 kernel */
+#ifndef GFP_IOFS
+#define GFP_IOFS (__GFP_IO | __GFP_FS)
#endif
-extern cfs_mem_cache_t * cfs_mem_cache_create (const char *, size_t, size_t, unsigned long);
-extern int cfs_mem_cache_destroy ( cfs_mem_cache_t * );
-extern void *cfs_mem_cache_alloc ( cfs_mem_cache_t *, int);
-extern void cfs_mem_cache_free ( cfs_mem_cache_t *, void *);
-extern int cfs_mem_is_in_cache(const void *addr, const cfs_mem_cache_t *kmem);
-
-#define CFS_DECL_MMSPACE mm_segment_t __oldfs
-#define CFS_MMSPACE_OPEN \
+
+#define DECL_MMSPACE mm_segment_t __oldfs
+#define MMSPACE_OPEN \
do { __oldfs = get_fs(); set_fs(get_ds());} while(0)
-#define CFS_MMSPACE_CLOSE set_fs(__oldfs)
+#define MMSPACE_CLOSE set_fs(__oldfs)
+
-#define CFS_SLAB_HWCACHE_ALIGN SLAB_HWCACHE_ALIGN
-#define CFS_SLAB_KERNEL SLAB_KERNEL
-#define CFS_SLAB_NOFS SLAB_NOFS
+extern void *cfs_cpt_malloc(struct cfs_cpt_table *cptab, int cpt,
+ size_t nr_bytes, unsigned int flags);
+extern void *cfs_cpt_vmalloc(struct cfs_cpt_table *cptab, int cpt,
+ size_t nr_bytes);
+extern struct page *cfs_page_cpt_alloc(struct cfs_cpt_table *cptab,
+ int cpt, unsigned int flags);
+extern void *cfs_mem_cache_cpt_alloc(struct kmem_cache *cachep,
+ struct cfs_cpt_table *cptab,
+ int cpt, unsigned int flags);
/*
* Shrinker
*/
-#ifndef HAVE_REGISTER_SHRINKER
-/* Shrinker callback */
-typedef shrinker_t cfs_shrinker_t;
-#define cfs_set_shrinker(seeks, shrinker) set_shrinker(seeks, shrinker)
-#define cfs_remove_shrinker(shrinker) remove_shrinker(shrinker)
-#endif /* !HAVE_REGISTER_SHRINKER */
+#ifdef HAVE_SHRINK_CONTROL
+# define SHRINKER_ARGS(sc, nr_to_scan, gfp_mask) \
+ struct shrinker *shrinker, \
+ struct shrink_control *sc
+# define shrink_param(sc, var) ((sc)->var)
+#else
+# ifdef HAVE_SHRINKER_WANT_SHRINK_PTR
+# define SHRINKER_ARGS(sc, nr_to_scan, gfp_mask) \
+ struct shrinker *shrinker, \
+ int nr_to_scan, gfp_t gfp_mask
+# else
+# define SHRINKER_ARGS(sc, nr_to_scan, gfp_mask) \
+ int nr_to_scan, gfp_t gfp_mask
+# endif
+# define shrink_param(sc, var) (var)
+#endif
+
+typedef int (*shrinker_t)(SHRINKER_ARGS(sc, nr_to_scan, gfp_mask));
+
+static inline
+struct shrinker *set_shrinker(int seek, shrinker_t func)
+{
+ struct shrinker *s;
+
+ s = kzalloc(sizeof(*s), GFP_KERNEL);
+ if (s == NULL)
+ return (NULL);
+
+ s->shrink = func;
+ s->seeks = seek;
+
+ register_shrinker(s);
-/* struct shrinker */
-#define cfs_shrinker shrinker
+ return s;
+}
+
+static inline
+void remove_shrinker(struct shrinker *shrinker)
+{
+ if (shrinker == NULL)
+ return;
+
+ unregister_shrinker(shrinker);
+ kfree(shrinker);
+}
-#define CFS_DEFAULT_SEEKS DEFAULT_SEEKS
#endif /* __LINUX_CFS_MEM_H__ */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff