/*
* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
*
- * Memory allocation helpers.
+ * Misc memory accessors
*
*
* This program is free software; you can redistribute it and/or modify
*
*/
-#include <sound/driver.h>
+#include <linux/config.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
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;
+ return copy_to_user(dst, (const void __force*)src, count) ? -EFAULT : 0;
#else
char buf[256];
while (count) {
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;
+ return copy_from_user((void __force *)dst, src, count) ? -EFAULT : 0;
#else
char buf[256];
while (count) {
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