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f1ca4da6f7
in an initial reasonable autoconf style build system. This does not yet build but the configure system does appear to work properly and integrate with the kernel. Hopefully the next commit gets us back to a buildable version we can run the test suite against. git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@1 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
174 lines
6.0 KiB
C
174 lines
6.0 KiB
C
#ifndef _SYS_LINUX_KMEM_H
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#define _SYS_LINUX_KMEM_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#undef DEBUG_KMEM
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#undef DEBUG_KMEM_UNIMPLEMENTED
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#include <linux/slab.h>
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#include <linux/mm.h>
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#include <linux/spinlock.h>
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/*
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* Memory allocation interfaces
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*/
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#define KM_SLEEP GFP_KERNEL
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#define KM_NOSLEEP GFP_ATOMIC
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#undef KM_PANIC /* No linux analog */
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#define KM_PUSHPAGE (GFP_KERNEL | GFP_HIGH)
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#define KM_VMFLAGS GFP_LEVEL_MASK
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#define KM_FLAGS __GFP_BITS_MASK
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#ifdef DEBUG_KMEM
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/* Shim layer memory accounting */
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extern atomic_t kmem_alloc_used;
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extern unsigned int kmem_alloc_max;
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#endif
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#ifdef DEBUG_KMEM
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#define __kmem_alloc(size, flags, allocator) \
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({ void *_ptr_; \
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\
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/* Marked unlikely because we should never be doing this */ \
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if (unlikely((size) > (PAGE_SIZE * 2))) \
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printk("Warning: kmem_alloc(%d, 0x%x) large alloc at %s:%d " \
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"(%d/%d)\n", (int)(size), (int)(flags), \
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__FILE__, __LINE__, \
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atomic_read(&kmem_alloc_used), kmem_alloc_max); \
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\
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_ptr_ = (void *)allocator((size), (flags)); \
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if (_ptr_ == NULL) { \
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printk("Warning: kmem_alloc(%d, 0x%x) failed at %s:%d " \
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"(%d/%d)\n", (int)(size), (int)(flags), \
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__FILE__, __LINE__, \
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atomic_read(&kmem_alloc_used), kmem_alloc_max); \
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atomic_add((size), &kmem_alloc_used); \
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if (unlikely(atomic_read(&kmem_alloc_used) > kmem_alloc_max)) \
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kmem_alloc_max = atomic_read(&kmem_alloc_used); \
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} \
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\
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_ptr_; \
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})
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#define kmem_alloc(size, flags) __kmem_alloc(size, flags, kmalloc)
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#define kmem_zalloc(size, flags) __kmem_alloc(size, flags, kzalloc)
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#define kmem_free(ptr, size) \
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({ \
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BUG_ON(!ptr); \
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atomic_sub((size), &kmem_alloc_used); \
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memset(ptr, 0x5a, (size)); /* Poison */ \
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kfree(ptr); \
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(ptr) = (void *)0xdeadbeef; \
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})
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#else
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#define kmem_alloc(size, flags) kmalloc(size, flags)
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#define kmem_zalloc(size, flags) kzalloc(size, flags)
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#define kmem_free(ptr, size) kfree(ptr)
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#endif /* DEBUG_KMEM */
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#ifdef DEBUG_KMEM_UNIMPLEMENTED
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static __inline__ void *
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kmem_alloc_tryhard(size_t size, size_t *alloc_size, int kmflags)
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{
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#error "kmem_alloc_tryhard() not implemented"
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}
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#endif /* DEBUG_KMEM_UNIMPLEMENTED */
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/*
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* Slab allocation interfaces
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*/
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#undef KMC_NOTOUCH /* No linux analog */
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#define KMC_NODEBUG 0x00000000 /* Default beahvior */
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#define KMC_NOMAGAZINE /* No linux analog */
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#define KMC_NOHASH /* No linux analog */
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#define KMC_QCACHE /* No linux analog */
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#define KMC_REAP_CHUNK 256
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#define KMC_DEFAULT_SEEKS DEFAULT_SEEKS
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/* Defined by linux slab.h
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* typedef struct kmem_cache_s kmem_cache_t;
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*/
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/* No linux analog
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* extern int kmem_ready;
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* extern pgcnt_t kmem_reapahead;
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*/
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#ifdef DEBUG_KMEM_UNIMPLEMENTED
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static __inline__ void kmem_init(void) {
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#error "kmem_init() not implemented"
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}
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static __inline__ void kmem_thread_init(void) {
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#error "kmem_thread_init() not implemented"
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}
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static __inline__ void kmem_mp_init(void) {
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#error "kmem_mp_init() not implemented"
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}
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static __inline__ void kmem_reap_idspace(void) {
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#error "kmem_reap_idspace() not implemented"
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}
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static __inline__ size_t kmem_avail(void) {
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#error "kmem_avail() not implemented"
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}
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static __inline__ size_t kmem_maxavail(void) {
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#error "kmem_maxavail() not implemented"
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}
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static __inline__ uint64_t kmem_cache_stat(kmem_cache_t *cache) {
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#error "kmem_cache_stat() not implemented"
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}
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#endif /* DEBUG_KMEM_UNIMPLEMENTED */
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/* XXX - Used by arc.c to adjust its memory footprint. We may want
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* to use this hook in the future to adjust behavior based on
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* debug levels. For now it's safe to always return 0.
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*/
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static __inline__ int
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kmem_debugging(void)
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{
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return 0;
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}
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typedef int (*kmem_constructor_t)(void *, void *, int);
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typedef void (*kmem_destructor_t)(void *, void *);
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typedef void (*kmem_reclaim_t)(void *);
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kmem_cache_t *
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__kmem_cache_create(char *name, size_t size, size_t align,
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int (*constructor)(void *, void *, int),
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void (*destructor)(void *, void *),
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void (*reclaim)(void *),
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void *priv, void *vmp, int flags);
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void
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__kmem_cache_destroy(kmem_cache_t *cache);
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#define kmem_cache_create(name,size,align,ctor,dtor,rclm,priv,vmp,flags) \
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__kmem_cache_create(name,size,align,ctor,dtor,rclm,priv,vmp,flags)
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#define kmem_cache_destroy(cache) __kmem_cache_destroy(cache)
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#define kmem_cache_alloc(cache, flags) kmem_cache_alloc(cache, flags)
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#define kmem_cache_free(cache, ptr) kmem_cache_free(cache, ptr)
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#define kmem_cache_reap_now(cache) kmem_cache_shrink(cache)
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#define kmem_reap() __kmem_reap()
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_LINUX_KMEM_H */
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