* essentially no allocation space overhead.
*/
-#include <linux/config.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/cache.h>
static DEFINE_SPINLOCK(block_lock);
static void slob_free(void *b, int size);
+static void slob_timer_cbk(void);
+
static void *slob_alloc(size_t size, gfp_t gfp, int align)
{
return order;
}
-void *kmalloc(size_t size, gfp_t gfp)
+void *__kmalloc(size_t size, gfp_t gfp)
{
slob_t *m;
bigblock_t *bb;
slob_free(bb, sizeof(bigblock_t));
return 0;
}
-
-EXPORT_SYMBOL(kmalloc);
+EXPORT_SYMBOL(__kmalloc);
void kfree(const void *block)
{
}
EXPORT_SYMBOL(kmem_cache_create);
-int kmem_cache_destroy(struct kmem_cache *c)
+void kmem_cache_destroy(struct kmem_cache *c)
{
slob_free(c, sizeof(struct kmem_cache));
- return 0;
}
EXPORT_SYMBOL(kmem_cache_destroy);
}
EXPORT_SYMBOL(kmem_cache_alloc);
+void *kmem_cache_zalloc(struct kmem_cache *c, gfp_t flags)
+{
+ void *ret = kmem_cache_alloc(c, flags);
+ if (ret)
+ memset(ret, 0, c->size);
+
+ return ret;
+}
+EXPORT_SYMBOL(kmem_cache_zalloc);
+
void kmem_cache_free(struct kmem_cache *c, void *b)
{
if (c->dtor)
EXPORT_SYMBOL(kmem_cache_name);
static struct timer_list slob_timer = TIMER_INITIALIZER(
- (void (*)(unsigned long))kmem_cache_init, 0, 0);
+ (void (*)(unsigned long))slob_timer_cbk, 0, 0);
-void kmem_cache_init(void)
+int kmem_cache_shrink(struct kmem_cache *d)
{
- void *p = slob_alloc(PAGE_SIZE, 0, PAGE_SIZE-1);
-
- if (p)
- free_page((unsigned long)p);
-
- mod_timer(&slob_timer, jiffies + HZ);
+ return 0;
}
+EXPORT_SYMBOL(kmem_cache_shrink);
-atomic_t slab_reclaim_pages = ATOMIC_INIT(0);
-EXPORT_SYMBOL(slab_reclaim_pages);
-
-#ifdef CONFIG_SMP
-
-void *__alloc_percpu(size_t size)
+int kmem_ptr_validate(struct kmem_cache *a, const void *b)
{
- int i;
- struct percpu_data *pdata = kmalloc(sizeof (*pdata), GFP_KERNEL);
-
- if (!pdata)
- return NULL;
-
- for (i = 0; i < NR_CPUS; i++) {
- if (!cpu_possible(i))
- continue;
- pdata->ptrs[i] = kmalloc(size, GFP_KERNEL);
- if (!pdata->ptrs[i])
- goto unwind_oom;
- memset(pdata->ptrs[i], 0, size);
- }
-
- /* Catch derefs w/o wrappers */
- return (void *) (~(unsigned long) pdata);
+ return 0;
+}
-unwind_oom:
- while (--i >= 0) {
- if (!cpu_possible(i))
- continue;
- kfree(pdata->ptrs[i]);
- }
- kfree(pdata);
- return NULL;
+void __init kmem_cache_init(void)
+{
+ slob_timer_cbk();
}
-EXPORT_SYMBOL(__alloc_percpu);
-void
-free_percpu(const void *objp)
+static void slob_timer_cbk(void)
{
- int i;
- struct percpu_data *p = (struct percpu_data *) (~(unsigned long) objp);
+ void *p = slob_alloc(PAGE_SIZE, 0, PAGE_SIZE-1);
- for (i = 0; i < NR_CPUS; i++) {
- if (!cpu_possible(i))
- continue;
- kfree(p->ptrs[i]);
- }
- kfree(p);
-}
-EXPORT_SYMBOL(free_percpu);
+ if (p)
+ free_page((unsigned long)p);
-#endif
+ mod_timer(&slob_timer, jiffies + HZ);
+}