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!
diff --git a/sound/core/memory.c b/sound/core/memory.c
new file mode 100644
index 0000000..20860fe
--- /dev/null
+++ b/sound/core/memory.c
@@ -0,0 +1,306 @@
+/*
+ * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ *
+ * Memory allocation helpers.
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <sound/driver.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/time.h>
+#include <linux/pci.h>
+#include <sound/core.h>
+#include <sound/info.h>
+
+/*
+ * memory allocation helpers and debug routines
+ */
+
+#ifdef CONFIG_SND_DEBUG_MEMORY
+
+struct snd_alloc_track {
+ unsigned long magic;
+ void *caller;
+ size_t size;
+ struct list_head list;
+ long data[0];
+};
+
+#define snd_alloc_track_entry(obj) (struct snd_alloc_track *)((char*)obj - (unsigned long)((struct snd_alloc_track *)0)->data)
+
+static long snd_alloc_kmalloc;
+static long snd_alloc_vmalloc;
+static LIST_HEAD(snd_alloc_kmalloc_list);
+static LIST_HEAD(snd_alloc_vmalloc_list);
+static DEFINE_SPINLOCK(snd_alloc_kmalloc_lock);
+static DEFINE_SPINLOCK(snd_alloc_vmalloc_lock);
+#define KMALLOC_MAGIC 0x87654321
+#define VMALLOC_MAGIC 0x87654320
+static snd_info_entry_t *snd_memory_info_entry;
+
+void snd_memory_init(void)
+{
+ snd_alloc_kmalloc = 0;
+ snd_alloc_vmalloc = 0;
+}
+
+void snd_memory_done(void)
+{
+ struct list_head *head;
+ struct snd_alloc_track *t;
+
+ if (snd_alloc_kmalloc > 0)
+ snd_printk(KERN_ERR "Not freed snd_alloc_kmalloc = %li\n", snd_alloc_kmalloc);
+ if (snd_alloc_vmalloc > 0)
+ snd_printk(KERN_ERR "Not freed snd_alloc_vmalloc = %li\n", snd_alloc_vmalloc);
+ list_for_each_prev(head, &snd_alloc_kmalloc_list) {
+ t = list_entry(head, struct snd_alloc_track, list);
+ if (t->magic != KMALLOC_MAGIC) {
+ snd_printk(KERN_ERR "Corrupted kmalloc\n");
+ break;
+ }
+ snd_printk(KERN_ERR "kmalloc(%ld) from %p not freed\n", (long) t->size, t->caller);
+ }
+ list_for_each_prev(head, &snd_alloc_vmalloc_list) {
+ t = list_entry(head, struct snd_alloc_track, list);
+ if (t->magic != VMALLOC_MAGIC) {
+ snd_printk(KERN_ERR "Corrupted vmalloc\n");
+ break;
+ }
+ snd_printk(KERN_ERR "vmalloc(%ld) from %p not freed\n", (long) t->size, t->caller);
+ }
+}
+
+static void *__snd_kmalloc(size_t size, int flags, void *caller)
+{
+ unsigned long cpu_flags;
+ struct snd_alloc_track *t;
+ void *ptr;
+
+ ptr = snd_wrapper_kmalloc(size + sizeof(struct snd_alloc_track), flags);
+ if (ptr != NULL) {
+ t = (struct snd_alloc_track *)ptr;
+ t->magic = KMALLOC_MAGIC;
+ t->caller = caller;
+ spin_lock_irqsave(&snd_alloc_kmalloc_lock, cpu_flags);
+ list_add_tail(&t->list, &snd_alloc_kmalloc_list);
+ spin_unlock_irqrestore(&snd_alloc_kmalloc_lock, cpu_flags);
+ t->size = size;
+ snd_alloc_kmalloc += size;
+ ptr = t->data;
+ }
+ return ptr;
+}
+
+#define _snd_kmalloc(size, flags) __snd_kmalloc((size), (flags), __builtin_return_address(0));
+void *snd_hidden_kmalloc(size_t size, int flags)
+{
+ return _snd_kmalloc(size, flags);
+}
+
+void *snd_hidden_kcalloc(size_t n, size_t size, int flags)
+{
+ void *ret = NULL;
+ if (n != 0 && size > INT_MAX / n)
+ return ret;
+ ret = _snd_kmalloc(n * size, flags);
+ if (ret)
+ memset(ret, 0, n * size);
+ return ret;
+}
+
+void snd_hidden_kfree(const void *obj)
+{
+ unsigned long flags;
+ struct snd_alloc_track *t;
+ if (obj == NULL)
+ return;
+ t = snd_alloc_track_entry(obj);
+ if (t->magic != KMALLOC_MAGIC) {
+ snd_printk(KERN_WARNING "bad kfree (called from %p)\n", __builtin_return_address(0));
+ return;
+ }
+ spin_lock_irqsave(&snd_alloc_kmalloc_lock, flags);
+ list_del(&t->list);
+ spin_unlock_irqrestore(&snd_alloc_kmalloc_lock, flags);
+ t->magic = 0;
+ snd_alloc_kmalloc -= t->size;
+ obj = t;
+ snd_wrapper_kfree(obj);
+}
+
+void *snd_hidden_vmalloc(unsigned long size)
+{
+ void *ptr;
+ ptr = snd_wrapper_vmalloc(size + sizeof(struct snd_alloc_track));
+ if (ptr) {
+ struct snd_alloc_track *t = (struct snd_alloc_track *)ptr;
+ t->magic = VMALLOC_MAGIC;
+ t->caller = __builtin_return_address(0);
+ spin_lock(&snd_alloc_vmalloc_lock);
+ list_add_tail(&t->list, &snd_alloc_vmalloc_list);
+ spin_unlock(&snd_alloc_vmalloc_lock);
+ t->size = size;
+ snd_alloc_vmalloc += size;
+ ptr = t->data;
+ }
+ return ptr;
+}
+
+void snd_hidden_vfree(void *obj)
+{
+ struct snd_alloc_track *t;
+ if (obj == NULL)
+ return;
+ t = snd_alloc_track_entry(obj);
+ if (t->magic != VMALLOC_MAGIC) {
+ snd_printk(KERN_ERR "bad vfree (called from %p)\n", __builtin_return_address(0));
+ return;
+ }
+ spin_lock(&snd_alloc_vmalloc_lock);
+ list_del(&t->list);
+ spin_unlock(&snd_alloc_vmalloc_lock);
+ t->magic = 0;
+ snd_alloc_vmalloc -= t->size;
+ obj = t;
+ snd_wrapper_vfree(obj);
+}
+
+static void snd_memory_info_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer)
+{
+ snd_iprintf(buffer, "kmalloc: %li bytes\n", snd_alloc_kmalloc);
+ snd_iprintf(buffer, "vmalloc: %li bytes\n", snd_alloc_vmalloc);
+}
+
+int __init snd_memory_info_init(void)
+{
+ snd_info_entry_t *entry;
+
+ entry = snd_info_create_module_entry(THIS_MODULE, "meminfo", NULL);
+ if (entry) {
+ entry->c.text.read_size = 256;
+ entry->c.text.read = snd_memory_info_read;
+ if (snd_info_register(entry) < 0) {
+ snd_info_free_entry(entry);
+ entry = NULL;
+ }
+ }
+ snd_memory_info_entry = entry;
+ return 0;
+}
+
+int __exit snd_memory_info_done(void)
+{
+ if (snd_memory_info_entry)
+ snd_info_unregister(snd_memory_info_entry);
+ return 0;
+}
+
+#else
+
+#define _snd_kmalloc kmalloc
+
+#endif /* CONFIG_SND_DEBUG_MEMORY */
+
+/**
+ * snd_kmalloc_strdup - copy the string
+ * @string: the original string
+ * @flags: allocation conditions, GFP_XXX
+ *
+ * Allocates a memory chunk via kmalloc() and copies the string to it.
+ *
+ * Returns the pointer, or NULL if no enoguh memory.
+ */
+char *snd_kmalloc_strdup(const char *string, int flags)
+{
+ size_t len;
+ char *ptr;
+
+ if (!string)
+ return NULL;
+ len = strlen(string) + 1;
+ ptr = _snd_kmalloc(len, flags);
+ if (ptr)
+ memcpy(ptr, string, len);
+ return ptr;
+}
+
+/**
+ * copy_to_user_fromio - copy data from mmio-space to user-space
+ * @dst: the destination pointer on user-space
+ * @src: the source pointer on mmio
+ * @count: the data size to copy in bytes
+ *
+ * Copies the data from mmio-space to user-space.
+ *
+ * Returns zero if successful, or non-zero on failure.
+ */
+int copy_to_user_fromio(void __user *dst, const volatile void __iomem *src, size_t count)
+{
+#if defined(__i386__) || defined(CONFIG_SPARC32)
+ return copy_to_user(dst, (const void*)src, count) ? -EFAULT : 0;
+#else
+ char buf[256];
+ while (count) {
+ size_t c = count;
+ if (c > sizeof(buf))
+ c = sizeof(buf);
+ memcpy_fromio(buf, (void __iomem *)src, c);
+ if (copy_to_user(dst, buf, c))
+ return -EFAULT;
+ count -= c;
+ dst += c;
+ src += c;
+ }
+ return 0;
+#endif
+}
+
+/**
+ * copy_from_user_toio - copy data from user-space to mmio-space
+ * @dst: the destination pointer on mmio-space
+ * @src: the source pointer on user-space
+ * @count: the data size to copy in bytes
+ *
+ * Copies the data from user-space to mmio-space.
+ *
+ * Returns zero if successful, or non-zero on failure.
+ */
+int copy_from_user_toio(volatile void __iomem *dst, const void __user *src, size_t count)
+{
+#if defined(__i386__) || defined(CONFIG_SPARC32)
+ return copy_from_user((void*)dst, src, count) ? -EFAULT : 0;
+#else
+ char buf[256];
+ while (count) {
+ size_t c = count;
+ if (c > sizeof(buf))
+ c = sizeof(buf);
+ if (copy_from_user(buf, src, c))
+ return -EFAULT;
+ memcpy_toio(dst, buf, c);
+ count -= c;
+ dst += c;
+ src += c;
+ }
+ return 0;
+#endif
+}
