1 files changed, 274 insertions, 0 deletions
diff --git a/sys/cddl/compat/opensolaris/kern/opensolaris_kmem.c b/sys/cddl/compat/opensolaris/kern/opensolaris_kmem.c
new file mode 100644
index 000000000000..aa2661801cd0
--- /dev/null
+++ b/sys/cddl/compat/opensolaris/kern/opensolaris_kmem.c
@@ -0,0 +1,274 @@
+/*-
+ * Copyright (c) 2006-2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/systm.h>
+#include <sys/malloc.h>
+#include <sys/kmem.h>
+#include <sys/debug.h>
+#include <sys/mutex.h>
+
+#include <vm/vm_page.h>
+#include <vm/vm_object.h>
+#include <vm/vm_kern.h>
+#include <vm/vm_map.h>
+
+#ifdef KMEM_DEBUG
+#include <sys/queue.h>
+#include <sys/stack.h>
+#endif
+
+#ifdef _KERNEL
+MALLOC_DEFINE(M_SOLARIS, "solaris", "Solaris");
+#else
+#define	malloc(size, type, flags)	malloc(size)
+#define	free(addr, type)		free(addr)
+#endif
+
+#ifdef KMEM_DEBUG
+struct kmem_item {
+	struct stack	stack;
+	LIST_ENTRY(kmem_item) next;
+};
+static LIST_HEAD(, kmem_item) kmem_items;
+static struct mtx kmem_items_mtx;
+MTX_SYSINIT(kmem_items_mtx, &kmem_items_mtx, "kmem_items", MTX_DEF);
+#endif	/* KMEM_DEBUG */
+
+#include <sys/vmem.h>
+
+void *
+zfs_kmem_alloc(size_t size, int kmflags)
+{
+	void *p;
+#ifdef KMEM_DEBUG
+	struct kmem_item *i;
+
+	size += sizeof(struct kmem_item);
+#endif
+	p = malloc(size, M_SOLARIS, kmflags);
+#ifndef _KERNEL
+	if (kmflags & KM_SLEEP)
+		assert(p != NULL);
+#endif
+#ifdef KMEM_DEBUG
+	if (p != NULL) {
+		i = p;
+		p = (u_char *)p + sizeof(struct kmem_item);
+		stack_save(&i->stack);
+		mtx_lock(&kmem_items_mtx);
+		LIST_INSERT_HEAD(&kmem_items, i, next);
+		mtx_unlock(&kmem_items_mtx);
+	}
+#endif
+	return (p);
+}
+
+void
+zfs_kmem_free(void *buf, size_t size __unused)
+{
+#ifdef KMEM_DEBUG
+	if (buf == NULL) {
+		printf("%s: attempt to free NULL\n", __func__);
+		return;
+	}
+	struct kmem_item *i;
+
+	buf = (u_char *)buf - sizeof(struct kmem_item);
+	mtx_lock(&kmem_items_mtx);
+	LIST_FOREACH(i, &kmem_items, next) {
+		if (i == buf)
+			break;
+	}
+	ASSERT(i != NULL);
+	LIST_REMOVE(i, next);
+	mtx_unlock(&kmem_items_mtx);
+#endif
+	free(buf, M_SOLARIS);
+}
+
+static uint64_t kmem_size_val;
+
+static void
+kmem_size_init(void *unused __unused)
+{
+
+	kmem_size_val = (uint64_t)vm_cnt.v_page_count * PAGE_SIZE;
+	if (kmem_size_val > vm_kmem_size)
+		kmem_size_val = vm_kmem_size;
+}
+SYSINIT(kmem_size_init, SI_SUB_KMEM, SI_ORDER_ANY, kmem_size_init, NULL);
+
+uint64_t
+kmem_size(void)
+{
+
+	return (kmem_size_val);
+}
+
+static int
+kmem_std_constructor(void *mem, int size __unused, void *private, int flags)
+{
+	struct kmem_cache *cache = private;
+
+	return (cache->kc_constructor(mem, cache->kc_private, flags));
+}
+
+static void
+kmem_std_destructor(void *mem, int size __unused, void *private)
+{
+	struct kmem_cache *cache = private;
+
+	cache->kc_destructor(mem, cache->kc_private);
+}
+
+kmem_cache_t *
+kmem_cache_create(char *name, size_t bufsize, size_t align,
+    int (*constructor)(void *, void *, int), void (*destructor)(void *, void *),
+    void (*reclaim)(void *) __unused, void *private, vmem_t *vmp, int cflags)
+{
+	kmem_cache_t *cache;
+
+	ASSERT(vmp == NULL);
+
+	cache = kmem_alloc(sizeof(*cache), KM_SLEEP);
+	strlcpy(cache->kc_name, name, sizeof(cache->kc_name));
+	cache->kc_constructor = constructor;
+	cache->kc_destructor = destructor;
+	cache->kc_private = private;
+#if defined(_KERNEL) && !defined(KMEM_DEBUG)
+	cache->kc_zone = uma_zcreate(cache->kc_name, bufsize,
+	    constructor != NULL ? kmem_std_constructor : NULL,
+	    destructor != NULL ? kmem_std_destructor : NULL,
+	    NULL, NULL, align > 0 ? align - 1 : 0, cflags);
+#else
+	cache->kc_size = bufsize;
+#endif
+
+	return (cache);
+}
+
+void
+kmem_cache_destroy(kmem_cache_t *cache)
+{
+#if defined(_KERNEL) && !defined(KMEM_DEBUG)
+	uma_zdestroy(cache->kc_zone);
+#endif
+	kmem_free(cache, sizeof(*cache));
+}
+
+void *
+kmem_cache_alloc(kmem_cache_t *cache, int flags)
+{
+#if defined(_KERNEL) && !defined(KMEM_DEBUG)
+	return (uma_zalloc_arg(cache->kc_zone, cache, flags));
+#else
+	void *p;
+
+	p = kmem_alloc(cache->kc_size, flags);
+	if (p != NULL && cache->kc_constructor != NULL)
+		kmem_std_constructor(p, cache->kc_size, cache, flags);
+	return (p);
+#endif
+}
+
+void
+kmem_cache_free(kmem_cache_t *cache, void *buf)
+{
+#if defined(_KERNEL) && !defined(KMEM_DEBUG)
+	uma_zfree_arg(cache->kc_zone, buf, cache);
+#else
+	if (cache->kc_destructor != NULL)
+		kmem_std_destructor(buf, cache->kc_size, cache);
+	kmem_free(buf, cache->kc_size);
+#endif
+}
+
+#ifdef _KERNEL
+void
+kmem_cache_reap_now(kmem_cache_t *cache)
+{
+#ifndef KMEM_DEBUG
+	zone_drain(cache->kc_zone);
+#endif
+}
+
+void
+kmem_reap(void)
+{
+	uma_reclaim();
+}
+#else
+void
+kmem_cache_reap_now(kmem_cache_t *cache __unused)
+{
+}
+
+void
+kmem_reap(void)
+{
+}
+#endif
+
+int
+kmem_debugging(void)
+{
+	return (0);
+}
+
+void *
+calloc(size_t n, size_t s)
+{
+	return (kmem_zalloc(n * s, KM_NOSLEEP));
+}
+
+#ifdef KMEM_DEBUG
+void kmem_show(void *);
+void
+kmem_show(void *dummy __unused)
+{
+	struct kmem_item *i;
+
+	mtx_lock(&kmem_items_mtx);
+	if (LIST_EMPTY(&kmem_items))
+		printf("KMEM_DEBUG: No leaked elements.\n");
+	else {
+		printf("KMEM_DEBUG: Leaked elements:\n\n");
+		LIST_FOREACH(i, &kmem_items, next) {
+			printf("address=%p\n", i);
+			stack_print_ddb(&i->stack);
+			printf("\n");
+		}
+	}
+	mtx_unlock(&kmem_items_mtx);
+}
+
+SYSUNINIT(sol_kmem, SI_SUB_CPU, SI_ORDER_FIRST, kmem_show, NULL);
+#endif	/* KMEM_DEBUG */