kfifo: move struct kfifo in place
This is a new generic kernel FIFO implementation. The current kernel fifo API is not very widely used, because it has to many constrains. Only 17 files in the current 2.6.31-rc5 used it. FIFO's are like list's a very basic thing and a kfifo API which handles the most use case would save a lot of development time and memory resources. I think this are the reasons why kfifo is not in use: - The API is to simple, important functions are missing - A fifo can be only allocated dynamically - There is a requirement of a spinlock whether you need it or not - There is no support for data records inside a fifo So I decided to extend the kfifo in a more generic way without blowing up the API to much. The new API has the following benefits: - Generic usage: For kernel internal use and/or device driver. - Provide an API for the most use case. - Slim API: The whole API provides 25 functions. - Linux style habit. - DECLARE_KFIFO, DEFINE_KFIFO and INIT_KFIFO Macros - Direct copy_to_user from the fifo and copy_from_user into the fifo. - The kfifo itself is an in place member of the using data structure, this save an indirection access and does not waste the kernel allocator. - Lockless access: if only one reader and one writer is active on the fifo, which is the common use case, no additional locking is necessary. - Remove spinlock - give the user the freedom of choice what kind of locking to use if one is required. - Ability to handle records. Three type of records are supported: - Variable length records between 0-255 bytes, with a record size field of 1 bytes. - Variable length records between 0-65535 bytes, with a record size field of 2 bytes. - Fixed size records, which no record size field. - Preserve memory resource. - Performance! - Easy to use! This patch: Since most users want to have the kfifo as part of another object, reorganize the code to allow including struct kfifo in another data structure. This requires changing the kfifo_alloc and kfifo_init prototypes so that we pass an existing kfifo pointer into them. This patch changes the implementation and all existing users. [akpm@linux-foundation.org: fix warning] Signed-off-by: Stefani Seibold <stefani@seibold.net> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Andi Kleen <ak@linux.intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
parent
2ec91eec47
commit
4546548789
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@ -358,7 +358,7 @@ struct port {
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u8 update_flow_control;
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struct ctrl_ul ctrl_ul;
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struct ctrl_dl ctrl_dl;
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struct kfifo *fifo_ul;
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struct kfifo fifo_ul;
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void __iomem *dl_addr[2];
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u32 dl_size[2];
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u8 toggle_dl;
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@ -685,8 +685,8 @@ static int nozomi_read_config_table(struct nozomi *dc)
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dump_table(dc);
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for (i = PORT_MDM; i < MAX_PORT; i++) {
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dc->port[i].fifo_ul =
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kfifo_alloc(FIFO_BUFFER_SIZE_UL, GFP_ATOMIC, NULL);
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kfifo_alloc(&dc->port[i].fifo_ul,
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FIFO_BUFFER_SIZE_UL, GFP_ATOMIC, NULL);
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memset(&dc->port[i].ctrl_dl, 0, sizeof(struct ctrl_dl));
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memset(&dc->port[i].ctrl_ul, 0, sizeof(struct ctrl_ul));
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}
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@ -798,7 +798,7 @@ static int send_data(enum port_type index, struct nozomi *dc)
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struct tty_struct *tty = tty_port_tty_get(&port->port);
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/* Get data from tty and place in buf for now */
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size = __kfifo_get(port->fifo_ul, dc->send_buf,
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size = __kfifo_get(&port->fifo_ul, dc->send_buf,
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ul_size < SEND_BUF_MAX ? ul_size : SEND_BUF_MAX);
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if (size == 0) {
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@ -988,11 +988,11 @@ static int receive_flow_control(struct nozomi *dc)
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} else if (old_ctrl.CTS == 0 && ctrl_dl.CTS == 1) {
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if (__kfifo_len(dc->port[port].fifo_ul)) {
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if (__kfifo_len(&dc->port[port].fifo_ul)) {
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DBG1("Enable interrupt (0x%04X) on port: %d",
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enable_ier, port);
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DBG1("Data in buffer [%d], enable transmit! ",
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__kfifo_len(dc->port[port].fifo_ul));
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__kfifo_len(&dc->port[port].fifo_ul));
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enable_transmit_ul(port, dc);
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} else {
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DBG1("No data in buffer...");
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@ -1536,8 +1536,7 @@ static void __devexit nozomi_card_exit(struct pci_dev *pdev)
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free_irq(pdev->irq, dc);
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for (i = 0; i < MAX_PORT; i++)
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if (dc->port[i].fifo_ul)
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kfifo_free(dc->port[i].fifo_ul);
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kfifo_free(&dc->port[i].fifo_ul);
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kfree(dc->send_buf);
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@ -1673,7 +1672,7 @@ static int ntty_write(struct tty_struct *tty, const unsigned char *buffer,
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goto exit;
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}
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rval = __kfifo_put(port->fifo_ul, (unsigned char *)buffer, count);
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rval = __kfifo_put(&port->fifo_ul, (unsigned char *)buffer, count);
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/* notify card */
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if (unlikely(dc == NULL)) {
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@ -1721,7 +1720,7 @@ static int ntty_write_room(struct tty_struct *tty)
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if (!port->port.count)
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goto exit;
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room = port->fifo_ul->size - __kfifo_len(port->fifo_ul);
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room = port->fifo_ul.size - __kfifo_len(&port->fifo_ul);
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exit:
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mutex_unlock(&port->tty_sem);
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@ -1878,7 +1877,7 @@ static s32 ntty_chars_in_buffer(struct tty_struct *tty)
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goto exit_in_buffer;
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}
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rval = __kfifo_len(port->fifo_ul);
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rval = __kfifo_len(&port->fifo_ul);
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exit_in_buffer:
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return rval;
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@ -487,7 +487,7 @@ static struct sonypi_device {
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int camera_power;
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int bluetooth_power;
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struct mutex lock;
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struct kfifo *fifo;
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struct kfifo fifo;
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spinlock_t fifo_lock;
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wait_queue_head_t fifo_proc_list;
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struct fasync_struct *fifo_async;
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@ -496,7 +496,7 @@ static struct sonypi_device {
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struct input_dev *input_jog_dev;
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struct input_dev *input_key_dev;
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struct work_struct input_work;
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struct kfifo *input_fifo;
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struct kfifo input_fifo;
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spinlock_t input_fifo_lock;
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} sonypi_device;
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@ -777,7 +777,7 @@ static void input_keyrelease(struct work_struct *work)
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{
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struct sonypi_keypress kp;
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while (kfifo_get(sonypi_device.input_fifo, (unsigned char *)&kp,
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while (kfifo_get(&sonypi_device.input_fifo, (unsigned char *)&kp,
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sizeof(kp)) == sizeof(kp)) {
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msleep(10);
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input_report_key(kp.dev, kp.key, 0);
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@ -827,7 +827,7 @@ static void sonypi_report_input_event(u8 event)
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if (kp.dev) {
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input_report_key(kp.dev, kp.key, 1);
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input_sync(kp.dev);
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kfifo_put(sonypi_device.input_fifo,
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kfifo_put(&sonypi_device.input_fifo,
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(unsigned char *)&kp, sizeof(kp));
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schedule_work(&sonypi_device.input_work);
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}
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@ -880,7 +880,7 @@ static irqreturn_t sonypi_irq(int irq, void *dev_id)
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acpi_bus_generate_proc_event(sonypi_acpi_device, 1, event);
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#endif
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kfifo_put(sonypi_device.fifo, (unsigned char *)&event, sizeof(event));
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kfifo_put(&sonypi_device.fifo, (unsigned char *)&event, sizeof(event));
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kill_fasync(&sonypi_device.fifo_async, SIGIO, POLL_IN);
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wake_up_interruptible(&sonypi_device.fifo_proc_list);
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@ -906,7 +906,7 @@ static int sonypi_misc_open(struct inode *inode, struct file *file)
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mutex_lock(&sonypi_device.lock);
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/* Flush input queue on first open */
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if (!sonypi_device.open_count)
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kfifo_reset(sonypi_device.fifo);
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kfifo_reset(&sonypi_device.fifo);
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sonypi_device.open_count++;
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mutex_unlock(&sonypi_device.lock);
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unlock_kernel();
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@ -919,17 +919,17 @@ static ssize_t sonypi_misc_read(struct file *file, char __user *buf,
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ssize_t ret;
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unsigned char c;
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if ((kfifo_len(sonypi_device.fifo) == 0) &&
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if ((kfifo_len(&sonypi_device.fifo) == 0) &&
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(file->f_flags & O_NONBLOCK))
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return -EAGAIN;
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ret = wait_event_interruptible(sonypi_device.fifo_proc_list,
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kfifo_len(sonypi_device.fifo) != 0);
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kfifo_len(&sonypi_device.fifo) != 0);
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if (ret)
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return ret;
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while (ret < count &&
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(kfifo_get(sonypi_device.fifo, &c, sizeof(c)) == sizeof(c))) {
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(kfifo_get(&sonypi_device.fifo, &c, sizeof(c)) == sizeof(c))) {
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if (put_user(c, buf++))
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return -EFAULT;
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ret++;
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static unsigned int sonypi_misc_poll(struct file *file, poll_table *wait)
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{
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poll_wait(file, &sonypi_device.fifo_proc_list, wait);
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if (kfifo_len(sonypi_device.fifo))
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if (kfifo_len(&sonypi_device.fifo))
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return POLLIN | POLLRDNORM;
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return 0;
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}
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"http://www.linux.it/~malattia/wiki/index.php/Sony_drivers\n");
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spin_lock_init(&sonypi_device.fifo_lock);
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sonypi_device.fifo = kfifo_alloc(SONYPI_BUF_SIZE, GFP_KERNEL,
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error = kfifo_alloc(&sonypi_device.fifo, SONYPI_BUF_SIZE, GFP_KERNEL,
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&sonypi_device.fifo_lock);
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if (IS_ERR(sonypi_device.fifo)) {
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if (error) {
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printk(KERN_ERR "sonypi: kfifo_alloc failed\n");
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return PTR_ERR(sonypi_device.fifo);
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return error;
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}
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init_waitqueue_head(&sonypi_device.fifo_proc_list);
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}
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spin_lock_init(&sonypi_device.input_fifo_lock);
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sonypi_device.input_fifo =
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kfifo_alloc(SONYPI_BUF_SIZE, GFP_KERNEL,
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&sonypi_device.input_fifo_lock);
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if (IS_ERR(sonypi_device.input_fifo)) {
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error = kfifo_alloc(&sonypi_device.input_fifo, SONYPI_BUF_SIZE,
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GFP_KERNEL, &sonypi_device.input_fifo_lock);
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if (error) {
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printk(KERN_ERR "sonypi: kfifo_alloc failed\n");
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error = PTR_ERR(sonypi_device.input_fifo);
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goto err_inpdev_unregister;
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}
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pci_disable_device(pcidev);
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err_put_pcidev:
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pci_dev_put(pcidev);
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kfifo_free(sonypi_device.fifo);
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kfifo_free(&sonypi_device.fifo);
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return error;
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}
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if (useinput) {
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input_unregister_device(sonypi_device.input_key_dev);
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input_unregister_device(sonypi_device.input_jog_dev);
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kfifo_free(sonypi_device.input_fifo);
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kfifo_free(&sonypi_device.input_fifo);
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}
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misc_deregister(&sonypi_misc_device);
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pci_dev_put(sonypi_device.dev);
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}
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kfifo_free(sonypi_device.fifo);
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kfifo_free(&sonypi_device.fifo);
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return 0;
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}
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#include <linux/list.h>
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#include <linux/mutex.h>
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#include <linux/kfifo.h>
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#include "t3_cpl.h"
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#include "t3cdev.h"
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};
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struct cxio_hal_resource {
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struct kfifo *tpt_fifo;
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struct kfifo tpt_fifo;
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spinlock_t tpt_fifo_lock;
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struct kfifo *qpid_fifo;
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struct kfifo qpid_fifo;
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spinlock_t qpid_fifo_lock;
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struct kfifo *cqid_fifo;
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struct kfifo cqid_fifo;
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spinlock_t cqid_fifo_lock;
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struct kfifo *pdid_fifo;
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struct kfifo pdid_fifo;
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spinlock_t pdid_fifo_lock;
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};
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@ -39,12 +39,12 @@
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#include "cxio_resource.h"
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#include "cxio_hal.h"
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static struct kfifo *rhdl_fifo;
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static struct kfifo rhdl_fifo;
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static spinlock_t rhdl_fifo_lock;
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#define RANDOM_SIZE 16
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static int __cxio_init_resource_fifo(struct kfifo **fifo,
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static int __cxio_init_resource_fifo(struct kfifo *fifo,
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spinlock_t *fifo_lock,
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u32 nr, u32 skip_low,
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u32 skip_high,
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@ -55,12 +55,11 @@ static int __cxio_init_resource_fifo(struct kfifo **fifo,
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u32 rarray[16];
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spin_lock_init(fifo_lock);
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*fifo = kfifo_alloc(nr * sizeof(u32), GFP_KERNEL, fifo_lock);
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if (IS_ERR(*fifo))
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if (kfifo_alloc(fifo, nr * sizeof(u32), GFP_KERNEL, fifo_lock))
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return -ENOMEM;
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for (i = 0; i < skip_low + skip_high; i++)
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__kfifo_put(*fifo, (unsigned char *) &entry, sizeof(u32));
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__kfifo_put(fifo, (unsigned char *) &entry, sizeof(u32));
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if (random) {
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j = 0;
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random_bytes = random32();
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@ -72,33 +71,33 @@ static int __cxio_init_resource_fifo(struct kfifo **fifo,
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random_bytes = random32();
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}
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idx = (random_bytes >> (j * 2)) & 0xF;
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__kfifo_put(*fifo,
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__kfifo_put(fifo,
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(unsigned char *) &rarray[idx],
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sizeof(u32));
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rarray[idx] = i;
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j++;
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}
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for (i = 0; i < RANDOM_SIZE; i++)
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__kfifo_put(*fifo,
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__kfifo_put(fifo,
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(unsigned char *) &rarray[i],
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sizeof(u32));
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} else
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for (i = skip_low; i < nr - skip_high; i++)
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__kfifo_put(*fifo, (unsigned char *) &i, sizeof(u32));
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__kfifo_put(fifo, (unsigned char *) &i, sizeof(u32));
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for (i = 0; i < skip_low + skip_high; i++)
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kfifo_get(*fifo, (unsigned char *) &entry, sizeof(u32));
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kfifo_get(fifo, (unsigned char *) &entry, sizeof(u32));
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return 0;
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}
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static int cxio_init_resource_fifo(struct kfifo **fifo, spinlock_t * fifo_lock,
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static int cxio_init_resource_fifo(struct kfifo *fifo, spinlock_t * fifo_lock,
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u32 nr, u32 skip_low, u32 skip_high)
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{
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return (__cxio_init_resource_fifo(fifo, fifo_lock, nr, skip_low,
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skip_high, 0));
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}
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static int cxio_init_resource_fifo_random(struct kfifo **fifo,
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static int cxio_init_resource_fifo_random(struct kfifo *fifo,
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spinlock_t * fifo_lock,
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u32 nr, u32 skip_low, u32 skip_high)
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{
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@ -113,15 +112,14 @@ static int cxio_init_qpid_fifo(struct cxio_rdev *rdev_p)
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spin_lock_init(&rdev_p->rscp->qpid_fifo_lock);
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rdev_p->rscp->qpid_fifo = kfifo_alloc(T3_MAX_NUM_QP * sizeof(u32),
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if (kfifo_alloc(&rdev_p->rscp->qpid_fifo, T3_MAX_NUM_QP * sizeof(u32),
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GFP_KERNEL,
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&rdev_p->rscp->qpid_fifo_lock);
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if (IS_ERR(rdev_p->rscp->qpid_fifo))
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&rdev_p->rscp->qpid_fifo_lock))
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return -ENOMEM;
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for (i = 16; i < T3_MAX_NUM_QP; i++)
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if (!(i & rdev_p->qpmask))
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__kfifo_put(rdev_p->rscp->qpid_fifo,
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__kfifo_put(&rdev_p->rscp->qpid_fifo,
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(unsigned char *) &i, sizeof(u32));
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return 0;
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}
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@ -134,7 +132,7 @@ int cxio_hal_init_rhdl_resource(u32 nr_rhdl)
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void cxio_hal_destroy_rhdl_resource(void)
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{
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kfifo_free(rhdl_fifo);
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kfifo_free(&rhdl_fifo);
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}
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/* nr_* must be power of 2 */
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@ -167,11 +165,11 @@ int cxio_hal_init_resource(struct cxio_rdev *rdev_p,
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goto pdid_err;
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return 0;
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pdid_err:
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kfifo_free(rscp->cqid_fifo);
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kfifo_free(&rscp->cqid_fifo);
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cqid_err:
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kfifo_free(rscp->qpid_fifo);
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kfifo_free(&rscp->qpid_fifo);
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||||
qpid_err:
|
||||
kfifo_free(rscp->tpt_fifo);
|
||||
kfifo_free(&rscp->tpt_fifo);
|
||||
tpt_err:
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
@ -195,17 +193,17 @@ static void cxio_hal_put_resource(struct kfifo *fifo, u32 entry)
|
|||
|
||||
u32 cxio_hal_get_stag(struct cxio_hal_resource *rscp)
|
||||
{
|
||||
return cxio_hal_get_resource(rscp->tpt_fifo);
|
||||
return cxio_hal_get_resource(&rscp->tpt_fifo);
|
||||
}
|
||||
|
||||
void cxio_hal_put_stag(struct cxio_hal_resource *rscp, u32 stag)
|
||||
{
|
||||
cxio_hal_put_resource(rscp->tpt_fifo, stag);
|
||||
cxio_hal_put_resource(&rscp->tpt_fifo, stag);
|
||||
}
|
||||
|
||||
u32 cxio_hal_get_qpid(struct cxio_hal_resource *rscp)
|
||||
{
|
||||
u32 qpid = cxio_hal_get_resource(rscp->qpid_fifo);
|
||||
u32 qpid = cxio_hal_get_resource(&rscp->qpid_fifo);
|
||||
PDBG("%s qpid 0x%x\n", __func__, qpid);
|
||||
return qpid;
|
||||
}
|
||||
|
@ -213,35 +211,35 @@ u32 cxio_hal_get_qpid(struct cxio_hal_resource *rscp)
|
|||
void cxio_hal_put_qpid(struct cxio_hal_resource *rscp, u32 qpid)
|
||||
{
|
||||
PDBG("%s qpid 0x%x\n", __func__, qpid);
|
||||
cxio_hal_put_resource(rscp->qpid_fifo, qpid);
|
||||
cxio_hal_put_resource(&rscp->qpid_fifo, qpid);
|
||||
}
|
||||
|
||||
u32 cxio_hal_get_cqid(struct cxio_hal_resource *rscp)
|
||||
{
|
||||
return cxio_hal_get_resource(rscp->cqid_fifo);
|
||||
return cxio_hal_get_resource(&rscp->cqid_fifo);
|
||||
}
|
||||
|
||||
void cxio_hal_put_cqid(struct cxio_hal_resource *rscp, u32 cqid)
|
||||
{
|
||||
cxio_hal_put_resource(rscp->cqid_fifo, cqid);
|
||||
cxio_hal_put_resource(&rscp->cqid_fifo, cqid);
|
||||
}
|
||||
|
||||
u32 cxio_hal_get_pdid(struct cxio_hal_resource *rscp)
|
||||
{
|
||||
return cxio_hal_get_resource(rscp->pdid_fifo);
|
||||
return cxio_hal_get_resource(&rscp->pdid_fifo);
|
||||
}
|
||||
|
||||
void cxio_hal_put_pdid(struct cxio_hal_resource *rscp, u32 pdid)
|
||||
{
|
||||
cxio_hal_put_resource(rscp->pdid_fifo, pdid);
|
||||
cxio_hal_put_resource(&rscp->pdid_fifo, pdid);
|
||||
}
|
||||
|
||||
void cxio_hal_destroy_resource(struct cxio_hal_resource *rscp)
|
||||
{
|
||||
kfifo_free(rscp->tpt_fifo);
|
||||
kfifo_free(rscp->cqid_fifo);
|
||||
kfifo_free(rscp->qpid_fifo);
|
||||
kfifo_free(rscp->pdid_fifo);
|
||||
kfifo_free(&rscp->tpt_fifo);
|
||||
kfifo_free(&rscp->cqid_fifo);
|
||||
kfifo_free(&rscp->qpid_fifo);
|
||||
kfifo_free(&rscp->pdid_fifo);
|
||||
kfree(rscp);
|
||||
}
|
||||
|
||||
|
|
|
@ -800,7 +800,7 @@ static irqreturn_t meye_irq(int irq, void *dev_id)
|
|||
return IRQ_HANDLED;
|
||||
|
||||
if (meye.mchip_mode == MCHIP_HIC_MODE_CONT_OUT) {
|
||||
if (kfifo_get(meye.grabq, (unsigned char *)&reqnr,
|
||||
if (kfifo_get(&meye.grabq, (unsigned char *)&reqnr,
|
||||
sizeof(int)) != sizeof(int)) {
|
||||
mchip_free_frame();
|
||||
return IRQ_HANDLED;
|
||||
|
@ -811,7 +811,7 @@ static irqreturn_t meye_irq(int irq, void *dev_id)
|
|||
meye.grab_buffer[reqnr].state = MEYE_BUF_DONE;
|
||||
do_gettimeofday(&meye.grab_buffer[reqnr].timestamp);
|
||||
meye.grab_buffer[reqnr].sequence = sequence++;
|
||||
kfifo_put(meye.doneq, (unsigned char *)&reqnr, sizeof(int));
|
||||
kfifo_put(&meye.doneq, (unsigned char *)&reqnr, sizeof(int));
|
||||
wake_up_interruptible(&meye.proc_list);
|
||||
} else {
|
||||
int size;
|
||||
|
@ -820,7 +820,7 @@ static irqreturn_t meye_irq(int irq, void *dev_id)
|
|||
mchip_free_frame();
|
||||
goto again;
|
||||
}
|
||||
if (kfifo_get(meye.grabq, (unsigned char *)&reqnr,
|
||||
if (kfifo_get(&meye.grabq, (unsigned char *)&reqnr,
|
||||
sizeof(int)) != sizeof(int)) {
|
||||
mchip_free_frame();
|
||||
goto again;
|
||||
|
@ -831,7 +831,7 @@ static irqreturn_t meye_irq(int irq, void *dev_id)
|
|||
meye.grab_buffer[reqnr].state = MEYE_BUF_DONE;
|
||||
do_gettimeofday(&meye.grab_buffer[reqnr].timestamp);
|
||||
meye.grab_buffer[reqnr].sequence = sequence++;
|
||||
kfifo_put(meye.doneq, (unsigned char *)&reqnr, sizeof(int));
|
||||
kfifo_put(&meye.doneq, (unsigned char *)&reqnr, sizeof(int));
|
||||
wake_up_interruptible(&meye.proc_list);
|
||||
}
|
||||
mchip_free_frame();
|
||||
|
@ -859,8 +859,8 @@ static int meye_open(struct file *file)
|
|||
|
||||
for (i = 0; i < MEYE_MAX_BUFNBRS; i++)
|
||||
meye.grab_buffer[i].state = MEYE_BUF_UNUSED;
|
||||
kfifo_reset(meye.grabq);
|
||||
kfifo_reset(meye.doneq);
|
||||
kfifo_reset(&meye.grabq);
|
||||
kfifo_reset(&meye.doneq);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -933,7 +933,7 @@ static int meyeioc_qbuf_capt(int *nb)
|
|||
mchip_cont_compression_start();
|
||||
|
||||
meye.grab_buffer[*nb].state = MEYE_BUF_USING;
|
||||
kfifo_put(meye.grabq, (unsigned char *)nb, sizeof(int));
|
||||
kfifo_put(&meye.grabq, (unsigned char *)nb, sizeof(int));
|
||||
mutex_unlock(&meye.lock);
|
||||
|
||||
return 0;
|
||||
|
@ -965,7 +965,7 @@ static int meyeioc_sync(struct file *file, void *fh, int *i)
|
|||
/* fall through */
|
||||
case MEYE_BUF_DONE:
|
||||
meye.grab_buffer[*i].state = MEYE_BUF_UNUSED;
|
||||
kfifo_get(meye.doneq, (unsigned char *)&unused, sizeof(int));
|
||||
kfifo_get(&meye.doneq, (unsigned char *)&unused, sizeof(int));
|
||||
}
|
||||
*i = meye.grab_buffer[*i].size;
|
||||
mutex_unlock(&meye.lock);
|
||||
|
@ -1452,7 +1452,7 @@ static int vidioc_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
|
|||
buf->flags |= V4L2_BUF_FLAG_QUEUED;
|
||||
buf->flags &= ~V4L2_BUF_FLAG_DONE;
|
||||
meye.grab_buffer[buf->index].state = MEYE_BUF_USING;
|
||||
kfifo_put(meye.grabq, (unsigned char *)&buf->index, sizeof(int));
|
||||
kfifo_put(&meye.grabq, (unsigned char *)&buf->index, sizeof(int));
|
||||
mutex_unlock(&meye.lock);
|
||||
|
||||
return 0;
|
||||
|
@ -1467,18 +1467,18 @@ static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
|
|||
|
||||
mutex_lock(&meye.lock);
|
||||
|
||||
if (kfifo_len(meye.doneq) == 0 && file->f_flags & O_NONBLOCK) {
|
||||
if (kfifo_len(&meye.doneq) == 0 && file->f_flags & O_NONBLOCK) {
|
||||
mutex_unlock(&meye.lock);
|
||||
return -EAGAIN;
|
||||
}
|
||||
|
||||
if (wait_event_interruptible(meye.proc_list,
|
||||
kfifo_len(meye.doneq) != 0) < 0) {
|
||||
kfifo_len(&meye.doneq) != 0) < 0) {
|
||||
mutex_unlock(&meye.lock);
|
||||
return -EINTR;
|
||||
}
|
||||
|
||||
if (!kfifo_get(meye.doneq, (unsigned char *)&reqnr,
|
||||
if (!kfifo_get(&meye.doneq, (unsigned char *)&reqnr,
|
||||
sizeof(int))) {
|
||||
mutex_unlock(&meye.lock);
|
||||
return -EBUSY;
|
||||
|
@ -1529,8 +1529,8 @@ static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
|
|||
{
|
||||
mutex_lock(&meye.lock);
|
||||
mchip_hic_stop();
|
||||
kfifo_reset(meye.grabq);
|
||||
kfifo_reset(meye.doneq);
|
||||
kfifo_reset(&meye.grabq);
|
||||
kfifo_reset(&meye.doneq);
|
||||
|
||||
for (i = 0; i < MEYE_MAX_BUFNBRS; i++)
|
||||
meye.grab_buffer[i].state = MEYE_BUF_UNUSED;
|
||||
|
@ -1572,7 +1572,7 @@ static unsigned int meye_poll(struct file *file, poll_table *wait)
|
|||
|
||||
mutex_lock(&meye.lock);
|
||||
poll_wait(file, &meye.proc_list, wait);
|
||||
if (kfifo_len(meye.doneq))
|
||||
if (kfifo_len(&meye.doneq))
|
||||
res = POLLIN | POLLRDNORM;
|
||||
mutex_unlock(&meye.lock);
|
||||
return res;
|
||||
|
@ -1745,16 +1745,14 @@ static int __devinit meye_probe(struct pci_dev *pcidev,
|
|||
}
|
||||
|
||||
spin_lock_init(&meye.grabq_lock);
|
||||
meye.grabq = kfifo_alloc(sizeof(int) * MEYE_MAX_BUFNBRS, GFP_KERNEL,
|
||||
&meye.grabq_lock);
|
||||
if (IS_ERR(meye.grabq)) {
|
||||
if (kfifo_alloc(&meye.grabq, sizeof(int) * MEYE_MAX_BUFNBRS, GFP_KERNEL,
|
||||
&meye.grabq_lock)) {
|
||||
printk(KERN_ERR "meye: fifo allocation failed\n");
|
||||
goto outkfifoalloc1;
|
||||
}
|
||||
spin_lock_init(&meye.doneq_lock);
|
||||
meye.doneq = kfifo_alloc(sizeof(int) * MEYE_MAX_BUFNBRS, GFP_KERNEL,
|
||||
&meye.doneq_lock);
|
||||
if (IS_ERR(meye.doneq)) {
|
||||
if (kfifo_alloc(&meye.doneq, sizeof(int) * MEYE_MAX_BUFNBRS, GFP_KERNEL,
|
||||
&meye.doneq_lock)) {
|
||||
printk(KERN_ERR "meye: fifo allocation failed\n");
|
||||
goto outkfifoalloc2;
|
||||
}
|
||||
|
@ -1868,9 +1866,9 @@ static int __devinit meye_probe(struct pci_dev *pcidev,
|
|||
outenabledev:
|
||||
sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERA, 0);
|
||||
outsonypienable:
|
||||
kfifo_free(meye.doneq);
|
||||
kfifo_free(&meye.doneq);
|
||||
outkfifoalloc2:
|
||||
kfifo_free(meye.grabq);
|
||||
kfifo_free(&meye.grabq);
|
||||
outkfifoalloc1:
|
||||
vfree(meye.grab_temp);
|
||||
outvmalloc:
|
||||
|
@ -1901,8 +1899,8 @@ static void __devexit meye_remove(struct pci_dev *pcidev)
|
|||
|
||||
sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERA, 0);
|
||||
|
||||
kfifo_free(meye.doneq);
|
||||
kfifo_free(meye.grabq);
|
||||
kfifo_free(&meye.doneq);
|
||||
kfifo_free(&meye.grabq);
|
||||
|
||||
vfree(meye.grab_temp);
|
||||
|
||||
|
|
|
@ -303,9 +303,9 @@ struct meye {
|
|||
struct meye_grab_buffer grab_buffer[MEYE_MAX_BUFNBRS];
|
||||
int vma_use_count[MEYE_MAX_BUFNBRS]; /* mmap count */
|
||||
struct mutex lock; /* mutex for open/mmap... */
|
||||
struct kfifo *grabq; /* queue for buffers to be grabbed */
|
||||
struct kfifo grabq; /* queue for buffers to be grabbed */
|
||||
spinlock_t grabq_lock; /* lock protecting the queue */
|
||||
struct kfifo *doneq; /* queue for grabbed buffers */
|
||||
struct kfifo doneq; /* queue for grabbed buffers */
|
||||
spinlock_t doneq_lock; /* lock protecting the queue */
|
||||
wait_queue_head_t proc_list; /* wait queue */
|
||||
struct video_device *video_dev; /* video device parameters */
|
||||
|
|
|
@ -1365,7 +1365,7 @@ static void lbs_send_confirmsleep(struct lbs_private *priv)
|
|||
priv->dnld_sent = DNLD_RES_RECEIVED;
|
||||
|
||||
/* If nothing to do, go back to sleep (?) */
|
||||
if (!__kfifo_len(priv->event_fifo) && !priv->resp_len[priv->resp_idx])
|
||||
if (!__kfifo_len(&priv->event_fifo) && !priv->resp_len[priv->resp_idx])
|
||||
priv->psstate = PS_STATE_SLEEP;
|
||||
|
||||
spin_unlock_irqrestore(&priv->driver_lock, flags);
|
||||
|
@ -1439,7 +1439,7 @@ void lbs_ps_confirm_sleep(struct lbs_private *priv)
|
|||
}
|
||||
|
||||
/* Pending events or command responses? */
|
||||
if (__kfifo_len(priv->event_fifo) || priv->resp_len[priv->resp_idx]) {
|
||||
if (__kfifo_len(&priv->event_fifo) || priv->resp_len[priv->resp_idx]) {
|
||||
allowed = 0;
|
||||
lbs_deb_host("pending events or command responses\n");
|
||||
}
|
||||
|
|
|
@ -10,7 +10,7 @@
|
|||
#include "scan.h"
|
||||
#include "assoc.h"
|
||||
|
||||
|
||||
#include <linux/kfifo.h>
|
||||
|
||||
/** sleep_params */
|
||||
struct sleep_params {
|
||||
|
@ -120,7 +120,7 @@ struct lbs_private {
|
|||
u32 resp_len[2];
|
||||
|
||||
/* Events sent from hardware to driver */
|
||||
struct kfifo *event_fifo;
|
||||
struct kfifo event_fifo;
|
||||
|
||||
/** thread to service interrupts */
|
||||
struct task_struct *main_thread;
|
||||
|
|
|
@ -459,7 +459,7 @@ static int lbs_thread(void *data)
|
|||
else if (!list_empty(&priv->cmdpendingq) &&
|
||||
!(priv->wakeup_dev_required))
|
||||
shouldsleep = 0; /* We have a command to send */
|
||||
else if (__kfifo_len(priv->event_fifo))
|
||||
else if (__kfifo_len(&priv->event_fifo))
|
||||
shouldsleep = 0; /* We have an event to process */
|
||||
else
|
||||
shouldsleep = 1; /* No command */
|
||||
|
@ -511,9 +511,9 @@ static int lbs_thread(void *data)
|
|||
|
||||
/* Process hardware events, e.g. card removed, link lost */
|
||||
spin_lock_irq(&priv->driver_lock);
|
||||
while (__kfifo_len(priv->event_fifo)) {
|
||||
while (__kfifo_len(&priv->event_fifo)) {
|
||||
u32 event;
|
||||
__kfifo_get(priv->event_fifo, (unsigned char *) &event,
|
||||
__kfifo_get(&priv->event_fifo, (unsigned char *) &event,
|
||||
sizeof(event));
|
||||
spin_unlock_irq(&priv->driver_lock);
|
||||
lbs_process_event(priv, event);
|
||||
|
@ -883,10 +883,9 @@ static int lbs_init_adapter(struct lbs_private *priv)
|
|||
priv->resp_len[0] = priv->resp_len[1] = 0;
|
||||
|
||||
/* Create the event FIFO */
|
||||
priv->event_fifo = kfifo_alloc(sizeof(u32) * 16, GFP_KERNEL, NULL);
|
||||
if (IS_ERR(priv->event_fifo)) {
|
||||
ret = kfifo_alloc(&priv->event_fifo, sizeof(u32) * 16, GFP_KERNEL, NULL);
|
||||
if (ret) {
|
||||
lbs_pr_err("Out of memory allocating event FIFO buffer\n");
|
||||
ret = -ENOMEM;
|
||||
goto out;
|
||||
}
|
||||
|
||||
|
@ -901,8 +900,7 @@ static void lbs_free_adapter(struct lbs_private *priv)
|
|||
lbs_deb_enter(LBS_DEB_MAIN);
|
||||
|
||||
lbs_free_cmd_buffer(priv);
|
||||
if (priv->event_fifo)
|
||||
kfifo_free(priv->event_fifo);
|
||||
kfifo_free(&priv->event_fifo);
|
||||
del_timer(&priv->command_timer);
|
||||
del_timer(&priv->auto_deepsleep_timer);
|
||||
kfree(priv->networks);
|
||||
|
@ -1177,7 +1175,7 @@ void lbs_queue_event(struct lbs_private *priv, u32 event)
|
|||
if (priv->psstate == PS_STATE_SLEEP)
|
||||
priv->psstate = PS_STATE_AWAKE;
|
||||
|
||||
__kfifo_put(priv->event_fifo, (unsigned char *) &event, sizeof(u32));
|
||||
__kfifo_put(&priv->event_fifo, (unsigned char *) &event, sizeof(u32));
|
||||
|
||||
wake_up_interruptible(&priv->waitq);
|
||||
|
||||
|
|
|
@ -164,7 +164,7 @@ struct fujitsu_hotkey_t {
|
|||
struct input_dev *input;
|
||||
char phys[32];
|
||||
struct platform_device *pf_device;
|
||||
struct kfifo *fifo;
|
||||
struct kfifo fifo;
|
||||
spinlock_t fifo_lock;
|
||||
int rfkill_supported;
|
||||
int rfkill_state;
|
||||
|
@ -824,12 +824,10 @@ static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
|
|||
|
||||
/* kfifo */
|
||||
spin_lock_init(&fujitsu_hotkey->fifo_lock);
|
||||
fujitsu_hotkey->fifo =
|
||||
kfifo_alloc(RINGBUFFERSIZE * sizeof(int), GFP_KERNEL,
|
||||
&fujitsu_hotkey->fifo_lock);
|
||||
if (IS_ERR(fujitsu_hotkey->fifo)) {
|
||||
error = kfifo_alloc(&fujitsu_hotkey->fifo, RINGBUFFERSIZE * sizeof(int),
|
||||
GFP_KERNEL, &fujitsu_hotkey->fifo_lock);
|
||||
if (error) {
|
||||
printk(KERN_ERR "kfifo_alloc failed\n");
|
||||
error = PTR_ERR(fujitsu_hotkey->fifo);
|
||||
goto err_stop;
|
||||
}
|
||||
|
||||
|
@ -934,7 +932,7 @@ static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
|
|||
err_free_input_dev:
|
||||
input_free_device(input);
|
||||
err_free_fifo:
|
||||
kfifo_free(fujitsu_hotkey->fifo);
|
||||
kfifo_free(&fujitsu_hotkey->fifo);
|
||||
err_stop:
|
||||
return result;
|
||||
}
|
||||
|
@ -956,7 +954,7 @@ static int acpi_fujitsu_hotkey_remove(struct acpi_device *device, int type)
|
|||
|
||||
input_free_device(input);
|
||||
|
||||
kfifo_free(fujitsu_hotkey->fifo);
|
||||
kfifo_free(&fujitsu_hotkey->fifo);
|
||||
|
||||
fujitsu_hotkey->acpi_handle = NULL;
|
||||
|
||||
|
@ -1008,7 +1006,7 @@ static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event)
|
|||
vdbg_printk(FUJLAPTOP_DBG_TRACE,
|
||||
"Push keycode into ringbuffer [%d]\n",
|
||||
keycode);
|
||||
status = kfifo_put(fujitsu_hotkey->fifo,
|
||||
status = kfifo_put(&fujitsu_hotkey->fifo,
|
||||
(unsigned char *)&keycode,
|
||||
sizeof(keycode));
|
||||
if (status != sizeof(keycode)) {
|
||||
|
@ -1022,7 +1020,7 @@ static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event)
|
|||
} else if (keycode == 0) {
|
||||
while ((status =
|
||||
kfifo_get
|
||||
(fujitsu_hotkey->fifo, (unsigned char *)
|
||||
(&fujitsu_hotkey->fifo, (unsigned char *)
|
||||
&keycode_r,
|
||||
sizeof
|
||||
(keycode_r))) == sizeof(keycode_r)) {
|
||||
|
|
|
@ -142,7 +142,7 @@ struct sony_laptop_input_s {
|
|||
atomic_t users;
|
||||
struct input_dev *jog_dev;
|
||||
struct input_dev *key_dev;
|
||||
struct kfifo *fifo;
|
||||
struct kfifo fifo;
|
||||
spinlock_t fifo_lock;
|
||||
struct workqueue_struct *wq;
|
||||
};
|
||||
|
@ -300,7 +300,7 @@ static void do_sony_laptop_release_key(struct work_struct *work)
|
|||
{
|
||||
struct sony_laptop_keypress kp;
|
||||
|
||||
while (kfifo_get(sony_laptop_input.fifo, (unsigned char *)&kp,
|
||||
while (kfifo_get(&sony_laptop_input.fifo, (unsigned char *)&kp,
|
||||
sizeof(kp)) == sizeof(kp)) {
|
||||
msleep(10);
|
||||
input_report_key(kp.dev, kp.key, 0);
|
||||
|
@ -362,7 +362,7 @@ static void sony_laptop_report_input_event(u8 event)
|
|||
/* we emit the scancode so we can always remap the key */
|
||||
input_event(kp.dev, EV_MSC, MSC_SCAN, event);
|
||||
input_sync(kp.dev);
|
||||
kfifo_put(sony_laptop_input.fifo,
|
||||
kfifo_put(&sony_laptop_input.fifo,
|
||||
(unsigned char *)&kp, sizeof(kp));
|
||||
|
||||
if (!work_pending(&sony_laptop_release_key_work))
|
||||
|
@ -385,12 +385,11 @@ static int sony_laptop_setup_input(struct acpi_device *acpi_device)
|
|||
|
||||
/* kfifo */
|
||||
spin_lock_init(&sony_laptop_input.fifo_lock);
|
||||
sony_laptop_input.fifo =
|
||||
kfifo_alloc(SONY_LAPTOP_BUF_SIZE, GFP_KERNEL,
|
||||
error =
|
||||
kfifo_alloc(&sony_laptop_input.fifo, SONY_LAPTOP_BUF_SIZE, GFP_KERNEL,
|
||||
&sony_laptop_input.fifo_lock);
|
||||
if (IS_ERR(sony_laptop_input.fifo)) {
|
||||
if (error) {
|
||||
printk(KERN_ERR DRV_PFX "kfifo_alloc failed\n");
|
||||
error = PTR_ERR(sony_laptop_input.fifo);
|
||||
goto err_dec_users;
|
||||
}
|
||||
|
||||
|
@ -474,7 +473,7 @@ static int sony_laptop_setup_input(struct acpi_device *acpi_device)
|
|||
destroy_workqueue(sony_laptop_input.wq);
|
||||
|
||||
err_free_kfifo:
|
||||
kfifo_free(sony_laptop_input.fifo);
|
||||
kfifo_free(&sony_laptop_input.fifo);
|
||||
|
||||
err_dec_users:
|
||||
atomic_dec(&sony_laptop_input.users);
|
||||
|
@ -500,7 +499,7 @@ static void sony_laptop_remove_input(void)
|
|||
}
|
||||
|
||||
destroy_workqueue(sony_laptop_input.wq);
|
||||
kfifo_free(sony_laptop_input.fifo);
|
||||
kfifo_free(&sony_laptop_input.fifo);
|
||||
}
|
||||
|
||||
/*********** Platform Device ***********/
|
||||
|
@ -2079,7 +2078,7 @@ static struct attribute_group spic_attribute_group = {
|
|||
|
||||
struct sonypi_compat_s {
|
||||
struct fasync_struct *fifo_async;
|
||||
struct kfifo *fifo;
|
||||
struct kfifo fifo;
|
||||
spinlock_t fifo_lock;
|
||||
wait_queue_head_t fifo_proc_list;
|
||||
atomic_t open_count;
|
||||
|
@ -2104,12 +2103,12 @@ static int sonypi_misc_open(struct inode *inode, struct file *file)
|
|||
/* Flush input queue on first open */
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(sonypi_compat.fifo->lock, flags);
|
||||
spin_lock_irqsave(&sonypi_compat.fifo_lock, flags);
|
||||
|
||||
if (atomic_inc_return(&sonypi_compat.open_count) == 1)
|
||||
__kfifo_reset(sonypi_compat.fifo);
|
||||
__kfifo_reset(&sonypi_compat.fifo);
|
||||
|
||||
spin_unlock_irqrestore(sonypi_compat.fifo->lock, flags);
|
||||
spin_unlock_irqrestore(&sonypi_compat.fifo_lock, flags);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
@ -2120,17 +2119,17 @@ static ssize_t sonypi_misc_read(struct file *file, char __user *buf,
|
|||
ssize_t ret;
|
||||
unsigned char c;
|
||||
|
||||
if ((kfifo_len(sonypi_compat.fifo) == 0) &&
|
||||
if ((kfifo_len(&sonypi_compat.fifo) == 0) &&
|
||||
(file->f_flags & O_NONBLOCK))
|
||||
return -EAGAIN;
|
||||
|
||||
ret = wait_event_interruptible(sonypi_compat.fifo_proc_list,
|
||||
kfifo_len(sonypi_compat.fifo) != 0);
|
||||
kfifo_len(&sonypi_compat.fifo) != 0);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
while (ret < count &&
|
||||
(kfifo_get(sonypi_compat.fifo, &c, sizeof(c)) == sizeof(c))) {
|
||||
(kfifo_get(&sonypi_compat.fifo, &c, sizeof(c)) == sizeof(c))) {
|
||||
if (put_user(c, buf++))
|
||||
return -EFAULT;
|
||||
ret++;
|
||||
|
@ -2147,7 +2146,7 @@ static ssize_t sonypi_misc_read(struct file *file, char __user *buf,
|
|||
static unsigned int sonypi_misc_poll(struct file *file, poll_table *wait)
|
||||
{
|
||||
poll_wait(file, &sonypi_compat.fifo_proc_list, wait);
|
||||
if (kfifo_len(sonypi_compat.fifo))
|
||||
if (kfifo_len(&sonypi_compat.fifo))
|
||||
return POLLIN | POLLRDNORM;
|
||||
return 0;
|
||||
}
|
||||
|
@ -2309,7 +2308,7 @@ static struct miscdevice sonypi_misc_device = {
|
|||
|
||||
static void sonypi_compat_report_event(u8 event)
|
||||
{
|
||||
kfifo_put(sonypi_compat.fifo, (unsigned char *)&event, sizeof(event));
|
||||
kfifo_put(&sonypi_compat.fifo, (unsigned char *)&event, sizeof(event));
|
||||
kill_fasync(&sonypi_compat.fifo_async, SIGIO, POLL_IN);
|
||||
wake_up_interruptible(&sonypi_compat.fifo_proc_list);
|
||||
}
|
||||
|
@ -2319,11 +2318,12 @@ static int sonypi_compat_init(void)
|
|||
int error;
|
||||
|
||||
spin_lock_init(&sonypi_compat.fifo_lock);
|
||||
sonypi_compat.fifo = kfifo_alloc(SONY_LAPTOP_BUF_SIZE, GFP_KERNEL,
|
||||
error =
|
||||
kfifo_alloc(&sonypi_compat.fifo, SONY_LAPTOP_BUF_SIZE, GFP_KERNEL,
|
||||
&sonypi_compat.fifo_lock);
|
||||
if (IS_ERR(sonypi_compat.fifo)) {
|
||||
if (error) {
|
||||
printk(KERN_ERR DRV_PFX "kfifo_alloc failed\n");
|
||||
return PTR_ERR(sonypi_compat.fifo);
|
||||
return error;
|
||||
}
|
||||
|
||||
init_waitqueue_head(&sonypi_compat.fifo_proc_list);
|
||||
|
@ -2342,14 +2342,14 @@ static int sonypi_compat_init(void)
|
|||
return 0;
|
||||
|
||||
err_free_kfifo:
|
||||
kfifo_free(sonypi_compat.fifo);
|
||||
kfifo_free(&sonypi_compat.fifo);
|
||||
return error;
|
||||
}
|
||||
|
||||
static void sonypi_compat_exit(void)
|
||||
{
|
||||
misc_deregister(&sonypi_misc_device);
|
||||
kfifo_free(sonypi_compat.fifo);
|
||||
kfifo_free(&sonypi_compat.fifo);
|
||||
}
|
||||
#else
|
||||
static int sonypi_compat_init(void) { return 0; }
|
||||
|
|
|
@ -517,7 +517,7 @@ static void iscsi_free_task(struct iscsi_task *task)
|
|||
if (conn->login_task == task)
|
||||
return;
|
||||
|
||||
__kfifo_put(session->cmdpool.queue, (void*)&task, sizeof(void*));
|
||||
__kfifo_put(&session->cmdpool.queue, (void*)&task, sizeof(void*));
|
||||
|
||||
if (sc) {
|
||||
task->sc = NULL;
|
||||
|
@ -737,7 +737,7 @@ __iscsi_conn_send_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
|
|||
BUG_ON(conn->c_stage == ISCSI_CONN_INITIAL_STAGE);
|
||||
BUG_ON(conn->c_stage == ISCSI_CONN_STOPPED);
|
||||
|
||||
if (!__kfifo_get(session->cmdpool.queue,
|
||||
if (!__kfifo_get(&session->cmdpool.queue,
|
||||
(void*)&task, sizeof(void*)))
|
||||
return NULL;
|
||||
}
|
||||
|
@ -1567,7 +1567,7 @@ static inline struct iscsi_task *iscsi_alloc_task(struct iscsi_conn *conn,
|
|||
{
|
||||
struct iscsi_task *task;
|
||||
|
||||
if (!__kfifo_get(conn->session->cmdpool.queue,
|
||||
if (!__kfifo_get(&conn->session->cmdpool.queue,
|
||||
(void *) &task, sizeof(void *)))
|
||||
return NULL;
|
||||
|
||||
|
@ -2461,12 +2461,7 @@ iscsi_pool_init(struct iscsi_pool *q, int max, void ***items, int item_size)
|
|||
if (q->pool == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
q->queue = kfifo_init((void*)q->pool, max * sizeof(void*),
|
||||
GFP_KERNEL, NULL);
|
||||
if (IS_ERR(q->queue)) {
|
||||
q->queue = NULL;
|
||||
goto enomem;
|
||||
}
|
||||
kfifo_init(&q->queue, (void*)q->pool, max * sizeof(void*), NULL);
|
||||
|
||||
for (i = 0; i < max; i++) {
|
||||
q->pool[i] = kzalloc(item_size, GFP_KERNEL);
|
||||
|
@ -2474,7 +2469,7 @@ iscsi_pool_init(struct iscsi_pool *q, int max, void ***items, int item_size)
|
|||
q->max = i;
|
||||
goto enomem;
|
||||
}
|
||||
__kfifo_put(q->queue, (void*)&q->pool[i], sizeof(void*));
|
||||
__kfifo_put(&q->queue, (void*)&q->pool[i], sizeof(void*));
|
||||
}
|
||||
|
||||
if (items) {
|
||||
|
@ -2497,7 +2492,6 @@ void iscsi_pool_free(struct iscsi_pool *q)
|
|||
for (i = 0; i < q->max; i++)
|
||||
kfree(q->pool[i]);
|
||||
kfree(q->pool);
|
||||
kfree(q->queue);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(iscsi_pool_free);
|
||||
|
||||
|
@ -2825,7 +2819,7 @@ iscsi_conn_setup(struct iscsi_cls_session *cls_session, int dd_size,
|
|||
|
||||
/* allocate login_task used for the login/text sequences */
|
||||
spin_lock_bh(&session->lock);
|
||||
if (!__kfifo_get(session->cmdpool.queue,
|
||||
if (!__kfifo_get(&session->cmdpool.queue,
|
||||
(void*)&conn->login_task,
|
||||
sizeof(void*))) {
|
||||
spin_unlock_bh(&session->lock);
|
||||
|
@ -2845,7 +2839,7 @@ iscsi_conn_setup(struct iscsi_cls_session *cls_session, int dd_size,
|
|||
return cls_conn;
|
||||
|
||||
login_task_data_alloc_fail:
|
||||
__kfifo_put(session->cmdpool.queue, (void*)&conn->login_task,
|
||||
__kfifo_put(&session->cmdpool.queue, (void*)&conn->login_task,
|
||||
sizeof(void*));
|
||||
login_task_alloc_fail:
|
||||
iscsi_destroy_conn(cls_conn);
|
||||
|
@ -2908,7 +2902,7 @@ void iscsi_conn_teardown(struct iscsi_cls_conn *cls_conn)
|
|||
free_pages((unsigned long) conn->data,
|
||||
get_order(ISCSI_DEF_MAX_RECV_SEG_LEN));
|
||||
kfree(conn->persistent_address);
|
||||
__kfifo_put(session->cmdpool.queue, (void*)&conn->login_task,
|
||||
__kfifo_put(&session->cmdpool.queue, (void*)&conn->login_task,
|
||||
sizeof(void*));
|
||||
if (session->leadconn == conn)
|
||||
session->leadconn = NULL;
|
||||
|
|
|
@ -445,15 +445,15 @@ void iscsi_tcp_cleanup_task(struct iscsi_task *task)
|
|||
return;
|
||||
|
||||
/* flush task's r2t queues */
|
||||
while (__kfifo_get(tcp_task->r2tqueue, (void*)&r2t, sizeof(void*))) {
|
||||
__kfifo_put(tcp_task->r2tpool.queue, (void*)&r2t,
|
||||
while (__kfifo_get(&tcp_task->r2tqueue, (void*)&r2t, sizeof(void*))) {
|
||||
__kfifo_put(&tcp_task->r2tpool.queue, (void*)&r2t,
|
||||
sizeof(void*));
|
||||
ISCSI_DBG_TCP(task->conn, "pending r2t dropped\n");
|
||||
}
|
||||
|
||||
r2t = tcp_task->r2t;
|
||||
if (r2t != NULL) {
|
||||
__kfifo_put(tcp_task->r2tpool.queue, (void*)&r2t,
|
||||
__kfifo_put(&tcp_task->r2tpool.queue, (void*)&r2t,
|
||||
sizeof(void*));
|
||||
tcp_task->r2t = NULL;
|
||||
}
|
||||
|
@ -541,7 +541,7 @@ static int iscsi_tcp_r2t_rsp(struct iscsi_conn *conn, struct iscsi_task *task)
|
|||
return 0;
|
||||
}
|
||||
|
||||
rc = __kfifo_get(tcp_task->r2tpool.queue, (void*)&r2t, sizeof(void*));
|
||||
rc = __kfifo_get(&tcp_task->r2tpool.queue, (void*)&r2t, sizeof(void*));
|
||||
if (!rc) {
|
||||
iscsi_conn_printk(KERN_ERR, conn, "Could not allocate R2T. "
|
||||
"Target has sent more R2Ts than it "
|
||||
|
@ -554,7 +554,7 @@ static int iscsi_tcp_r2t_rsp(struct iscsi_conn *conn, struct iscsi_task *task)
|
|||
if (r2t->data_length == 0) {
|
||||
iscsi_conn_printk(KERN_ERR, conn,
|
||||
"invalid R2T with zero data len\n");
|
||||
__kfifo_put(tcp_task->r2tpool.queue, (void*)&r2t,
|
||||
__kfifo_put(&tcp_task->r2tpool.queue, (void*)&r2t,
|
||||
sizeof(void*));
|
||||
return ISCSI_ERR_DATALEN;
|
||||
}
|
||||
|
@ -570,7 +570,7 @@ static int iscsi_tcp_r2t_rsp(struct iscsi_conn *conn, struct iscsi_task *task)
|
|||
"invalid R2T with data len %u at offset %u "
|
||||
"and total length %d\n", r2t->data_length,
|
||||
r2t->data_offset, scsi_out(task->sc)->length);
|
||||
__kfifo_put(tcp_task->r2tpool.queue, (void*)&r2t,
|
||||
__kfifo_put(&tcp_task->r2tpool.queue, (void*)&r2t,
|
||||
sizeof(void*));
|
||||
return ISCSI_ERR_DATALEN;
|
||||
}
|
||||
|
@ -580,7 +580,7 @@ static int iscsi_tcp_r2t_rsp(struct iscsi_conn *conn, struct iscsi_task *task)
|
|||
r2t->sent = 0;
|
||||
|
||||
tcp_task->exp_datasn = r2tsn + 1;
|
||||
__kfifo_put(tcp_task->r2tqueue, (void*)&r2t, sizeof(void*));
|
||||
__kfifo_put(&tcp_task->r2tqueue, (void*)&r2t, sizeof(void*));
|
||||
conn->r2t_pdus_cnt++;
|
||||
|
||||
iscsi_requeue_task(task);
|
||||
|
@ -951,7 +951,7 @@ int iscsi_tcp_task_init(struct iscsi_task *task)
|
|||
return conn->session->tt->init_pdu(task, 0, task->data_count);
|
||||
}
|
||||
|
||||
BUG_ON(__kfifo_len(tcp_task->r2tqueue));
|
||||
BUG_ON(__kfifo_len(&tcp_task->r2tqueue));
|
||||
tcp_task->exp_datasn = 0;
|
||||
|
||||
/* Prepare PDU, optionally w/ immediate data */
|
||||
|
@ -982,7 +982,7 @@ static struct iscsi_r2t_info *iscsi_tcp_get_curr_r2t(struct iscsi_task *task)
|
|||
if (r2t->data_length <= r2t->sent) {
|
||||
ISCSI_DBG_TCP(task->conn,
|
||||
" done with r2t %p\n", r2t);
|
||||
__kfifo_put(tcp_task->r2tpool.queue,
|
||||
__kfifo_put(&tcp_task->r2tpool.queue,
|
||||
(void *)&tcp_task->r2t,
|
||||
sizeof(void *));
|
||||
tcp_task->r2t = r2t = NULL;
|
||||
|
@ -990,7 +990,7 @@ static struct iscsi_r2t_info *iscsi_tcp_get_curr_r2t(struct iscsi_task *task)
|
|||
}
|
||||
|
||||
if (r2t == NULL) {
|
||||
__kfifo_get(tcp_task->r2tqueue,
|
||||
__kfifo_get(&tcp_task->r2tqueue,
|
||||
(void *)&tcp_task->r2t, sizeof(void *));
|
||||
r2t = tcp_task->r2t;
|
||||
}
|
||||
|
@ -1127,9 +1127,8 @@ int iscsi_tcp_r2tpool_alloc(struct iscsi_session *session)
|
|||
}
|
||||
|
||||
/* R2T xmit queue */
|
||||
tcp_task->r2tqueue = kfifo_alloc(
|
||||
session->max_r2t * 4 * sizeof(void*), GFP_KERNEL, NULL);
|
||||
if (tcp_task->r2tqueue == ERR_PTR(-ENOMEM)) {
|
||||
if (kfifo_alloc(&tcp_task->r2tqueue,
|
||||
session->max_r2t * 4 * sizeof(void*), GFP_KERNEL, NULL)) {
|
||||
iscsi_pool_free(&tcp_task->r2tpool);
|
||||
goto r2t_alloc_fail;
|
||||
}
|
||||
|
@ -1142,7 +1141,7 @@ int iscsi_tcp_r2tpool_alloc(struct iscsi_session *session)
|
|||
struct iscsi_task *task = session->cmds[i];
|
||||
struct iscsi_tcp_task *tcp_task = task->dd_data;
|
||||
|
||||
kfifo_free(tcp_task->r2tqueue);
|
||||
kfifo_free(&tcp_task->r2tqueue);
|
||||
iscsi_pool_free(&tcp_task->r2tpool);
|
||||
}
|
||||
return -ENOMEM;
|
||||
|
@ -1157,7 +1156,7 @@ void iscsi_tcp_r2tpool_free(struct iscsi_session *session)
|
|||
struct iscsi_task *task = session->cmds[i];
|
||||
struct iscsi_tcp_task *tcp_task = task->dd_data;
|
||||
|
||||
kfifo_free(tcp_task->r2tqueue);
|
||||
kfifo_free(&tcp_task->r2tqueue);
|
||||
iscsi_pool_free(&tcp_task->r2tpool);
|
||||
}
|
||||
}
|
||||
|
|
|
@ -58,19 +58,16 @@ static int srp_iu_pool_alloc(struct srp_queue *q, size_t max,
|
|||
goto free_pool;
|
||||
|
||||
spin_lock_init(&q->lock);
|
||||
q->queue = kfifo_init((void *) q->pool, max * sizeof(void *),
|
||||
GFP_KERNEL, &q->lock);
|
||||
if (IS_ERR(q->queue))
|
||||
goto free_item;
|
||||
kfifo_init(&q->queue, (void *) q->pool, max * sizeof(void *),
|
||||
&q->lock);
|
||||
|
||||
for (i = 0, iue = q->items; i < max; i++) {
|
||||
__kfifo_put(q->queue, (void *) &iue, sizeof(void *));
|
||||
__kfifo_put(&q->queue, (void *) &iue, sizeof(void *));
|
||||
iue->sbuf = ring[i];
|
||||
iue++;
|
||||
}
|
||||
return 0;
|
||||
|
||||
free_item:
|
||||
kfree(q->items);
|
||||
free_pool:
|
||||
kfree(q->pool);
|
||||
|
@ -167,7 +164,7 @@ struct iu_entry *srp_iu_get(struct srp_target *target)
|
|||
{
|
||||
struct iu_entry *iue = NULL;
|
||||
|
||||
kfifo_get(target->iu_queue.queue, (void *) &iue, sizeof(void *));
|
||||
kfifo_get(&target->iu_queue.queue, (void *) &iue, sizeof(void *));
|
||||
if (!iue)
|
||||
return iue;
|
||||
iue->target = target;
|
||||
|
@ -179,7 +176,7 @@ EXPORT_SYMBOL_GPL(srp_iu_get);
|
|||
|
||||
void srp_iu_put(struct iu_entry *iue)
|
||||
{
|
||||
kfifo_put(iue->target->iu_queue.queue, (void *) &iue, sizeof(void *));
|
||||
kfifo_put(&iue->target->iu_queue.queue, (void *) &iue, sizeof(void *));
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(srp_iu_put);
|
||||
|
||||
|
|
|
@ -37,7 +37,7 @@ static void recycle_frame(struct fhci_usb *usb, struct packet *pkt)
|
|||
pkt->info = 0;
|
||||
pkt->priv_data = NULL;
|
||||
|
||||
cq_put(usb->ep0->empty_frame_Q, pkt);
|
||||
cq_put(&usb->ep0->empty_frame_Q, pkt);
|
||||
}
|
||||
|
||||
/* confirm submitted packet */
|
||||
|
@ -57,7 +57,7 @@ void fhci_transaction_confirm(struct fhci_usb *usb, struct packet *pkt)
|
|||
if ((td->data + td->actual_len) && trans_len)
|
||||
memcpy(td->data + td->actual_len, pkt->data,
|
||||
trans_len);
|
||||
cq_put(usb->ep0->dummy_packets_Q, pkt->data);
|
||||
cq_put(&usb->ep0->dummy_packets_Q, pkt->data);
|
||||
}
|
||||
|
||||
recycle_frame(usb, pkt);
|
||||
|
@ -213,7 +213,7 @@ static int add_packet(struct fhci_usb *usb, struct ed *ed, struct td *td)
|
|||
}
|
||||
|
||||
/* update frame object fields before transmitting */
|
||||
pkt = cq_get(usb->ep0->empty_frame_Q);
|
||||
pkt = cq_get(&usb->ep0->empty_frame_Q);
|
||||
if (!pkt) {
|
||||
fhci_dbg(usb->fhci, "there is no empty frame\n");
|
||||
return -1;
|
||||
|
@ -222,7 +222,7 @@ static int add_packet(struct fhci_usb *usb, struct ed *ed, struct td *td)
|
|||
|
||||
pkt->info = 0;
|
||||
if (data == NULL) {
|
||||
data = cq_get(usb->ep0->dummy_packets_Q);
|
||||
data = cq_get(&usb->ep0->dummy_packets_Q);
|
||||
BUG_ON(!data);
|
||||
pkt->info = PKT_DUMMY_PACKET;
|
||||
}
|
||||
|
@ -246,7 +246,7 @@ static int add_packet(struct fhci_usb *usb, struct ed *ed, struct td *td)
|
|||
list_del_init(&td->frame_lh);
|
||||
td->status = USB_TD_OK;
|
||||
if (pkt->info & PKT_DUMMY_PACKET)
|
||||
cq_put(usb->ep0->dummy_packets_Q, pkt->data);
|
||||
cq_put(&usb->ep0->dummy_packets_Q, pkt->data);
|
||||
recycle_frame(usb, pkt);
|
||||
usb->actual_frame->total_bytes -= (len + PROTOCOL_OVERHEAD);
|
||||
fhci_err(usb->fhci, "host transaction failed\n");
|
||||
|
|
|
@ -106,33 +106,33 @@ void fhci_ep0_free(struct fhci_usb *usb)
|
|||
cpm_muram_free(cpm_muram_offset(ep->td_base));
|
||||
|
||||
if (ep->conf_frame_Q) {
|
||||
size = cq_howmany(ep->conf_frame_Q);
|
||||
size = cq_howmany(&ep->conf_frame_Q);
|
||||
for (; size; size--) {
|
||||
struct packet *pkt = cq_get(ep->conf_frame_Q);
|
||||
struct packet *pkt = cq_get(&ep->conf_frame_Q);
|
||||
|
||||
kfree(pkt);
|
||||
}
|
||||
cq_delete(ep->conf_frame_Q);
|
||||
cq_delete(&ep->conf_frame_Q);
|
||||
}
|
||||
|
||||
if (ep->empty_frame_Q) {
|
||||
size = cq_howmany(ep->empty_frame_Q);
|
||||
size = cq_howmany(&ep->empty_frame_Q);
|
||||
for (; size; size--) {
|
||||
struct packet *pkt = cq_get(ep->empty_frame_Q);
|
||||
struct packet *pkt = cq_get(&ep->empty_frame_Q);
|
||||
|
||||
kfree(pkt);
|
||||
}
|
||||
cq_delete(ep->empty_frame_Q);
|
||||
cq_delete(&ep->empty_frame_Q);
|
||||
}
|
||||
|
||||
if (ep->dummy_packets_Q) {
|
||||
size = cq_howmany(ep->dummy_packets_Q);
|
||||
size = cq_howmany(&ep->dummy_packets_Q);
|
||||
for (; size; size--) {
|
||||
u8 *buff = cq_get(ep->dummy_packets_Q);
|
||||
u8 *buff = cq_get(&ep->dummy_packets_Q);
|
||||
|
||||
kfree(buff);
|
||||
}
|
||||
cq_delete(ep->dummy_packets_Q);
|
||||
cq_delete(&ep->dummy_packets_Q);
|
||||
}
|
||||
|
||||
kfree(ep);
|
||||
|
@ -175,10 +175,9 @@ u32 fhci_create_ep(struct fhci_usb *usb, enum fhci_mem_alloc data_mem,
|
|||
ep->td_base = cpm_muram_addr(ep_offset);
|
||||
|
||||
/* zero all queue pointers */
|
||||
ep->conf_frame_Q = cq_new(ring_len + 2);
|
||||
ep->empty_frame_Q = cq_new(ring_len + 2);
|
||||
ep->dummy_packets_Q = cq_new(ring_len + 2);
|
||||
if (!ep->conf_frame_Q || !ep->empty_frame_Q || !ep->dummy_packets_Q) {
|
||||
if (cq_new(&ep->conf_frame_Q, ring_len + 2) ||
|
||||
cq_new(&ep->empty_frame_Q, ring_len + 2) ||
|
||||
cq_new(&ep->dummy_packets_Q, ring_len + 2)) {
|
||||
err_for = "frame_queues";
|
||||
goto err;
|
||||
}
|
||||
|
@ -199,8 +198,8 @@ u32 fhci_create_ep(struct fhci_usb *usb, enum fhci_mem_alloc data_mem,
|
|||
err_for = "buffer";
|
||||
goto err;
|
||||
}
|
||||
cq_put(ep->empty_frame_Q, pkt);
|
||||
cq_put(ep->dummy_packets_Q, buff);
|
||||
cq_put(&ep->empty_frame_Q, pkt);
|
||||
cq_put(&ep->dummy_packets_Q, buff);
|
||||
}
|
||||
|
||||
/* we put the endpoint parameter RAM right behind the TD ring */
|
||||
|
@ -319,7 +318,7 @@ static void fhci_td_transaction_confirm(struct fhci_usb *usb)
|
|||
if ((buf == DUMMY2_BD_BUFFER) && !(td_status & ~TD_W))
|
||||
continue;
|
||||
|
||||
pkt = cq_get(ep->conf_frame_Q);
|
||||
pkt = cq_get(&ep->conf_frame_Q);
|
||||
if (!pkt)
|
||||
fhci_err(usb->fhci, "no frame to confirm\n");
|
||||
|
||||
|
@ -460,9 +459,9 @@ u32 fhci_host_transaction(struct fhci_usb *usb,
|
|||
out_be16(&td->length, pkt->len);
|
||||
|
||||
/* put the frame to the confirmation queue */
|
||||
cq_put(ep->conf_frame_Q, pkt);
|
||||
cq_put(&ep->conf_frame_Q, pkt);
|
||||
|
||||
if (cq_howmany(ep->conf_frame_Q) == 1)
|
||||
if (cq_howmany(&ep->conf_frame_Q) == 1)
|
||||
out_8(&usb->fhci->regs->usb_comm, USB_CMD_STR_FIFO);
|
||||
|
||||
return 0;
|
||||
|
|
|
@ -423,9 +423,9 @@ struct endpoint {
|
|||
struct usb_td __iomem *td_base; /* first TD in the ring */
|
||||
struct usb_td __iomem *conf_td; /* next TD for confirm after transac */
|
||||
struct usb_td __iomem *empty_td;/* next TD for new transaction req. */
|
||||
struct kfifo *empty_frame_Q; /* Empty frames list to use */
|
||||
struct kfifo *conf_frame_Q; /* frames passed to TDs,waiting for tx */
|
||||
struct kfifo *dummy_packets_Q;/* dummy packets for the CRC overun */
|
||||
struct kfifo empty_frame_Q; /* Empty frames list to use */
|
||||
struct kfifo conf_frame_Q; /* frames passed to TDs,waiting for tx */
|
||||
struct kfifo dummy_packets_Q;/* dummy packets for the CRC overun */
|
||||
|
||||
bool already_pushed_dummy_bd;
|
||||
};
|
||||
|
@ -493,9 +493,9 @@ static inline struct usb_hcd *fhci_to_hcd(struct fhci_hcd *fhci)
|
|||
}
|
||||
|
||||
/* fifo of pointers */
|
||||
static inline struct kfifo *cq_new(int size)
|
||||
static inline int cq_new(struct kfifo *fifo, int size)
|
||||
{
|
||||
return kfifo_alloc(size * sizeof(void *), GFP_KERNEL, NULL);
|
||||
return kfifo_alloc(fifo, size * sizeof(void *), GFP_KERNEL, NULL);
|
||||
}
|
||||
|
||||
static inline void cq_delete(struct kfifo *kfifo)
|
||||
|
|
|
@ -939,9 +939,8 @@ int usb_serial_probe(struct usb_interface *interface,
|
|||
dev_err(&interface->dev, "No free urbs available\n");
|
||||
goto probe_error;
|
||||
}
|
||||
port->write_fifo = kfifo_alloc(PAGE_SIZE, GFP_KERNEL,
|
||||
&port->lock);
|
||||
if (IS_ERR(port->write_fifo))
|
||||
if (kfifo_alloc(&port->write_fifo, PAGE_SIZE, GFP_KERNEL,
|
||||
&port->lock))
|
||||
goto probe_error;
|
||||
buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
|
||||
port->bulk_out_size = buffer_size;
|
||||
|
|
|
@ -1,6 +1,7 @@
|
|||
/*
|
||||
* A simple kernel FIFO implementation.
|
||||
* A generic kernel FIFO implementation.
|
||||
*
|
||||
* Copyright (C) 2009 Stefani Seibold <stefani@seibold.net>
|
||||
* Copyright (C) 2004 Stelian Pop <stelian@popies.net>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
|
@ -32,10 +33,10 @@ struct kfifo {
|
|||
spinlock_t *lock; /* protects concurrent modifications */
|
||||
};
|
||||
|
||||
extern struct kfifo *kfifo_init(unsigned char *buffer, unsigned int size,
|
||||
gfp_t gfp_mask, spinlock_t *lock);
|
||||
extern struct kfifo *kfifo_alloc(unsigned int size, gfp_t gfp_mask,
|
||||
spinlock_t *lock);
|
||||
extern void kfifo_init(struct kfifo *fifo, unsigned char *buffer,
|
||||
unsigned int size, spinlock_t *lock);
|
||||
extern __must_check int kfifo_alloc(struct kfifo *fifo, unsigned int size,
|
||||
gfp_t gfp_mask, spinlock_t *lock);
|
||||
extern void kfifo_free(struct kfifo *fifo);
|
||||
extern unsigned int __kfifo_put(struct kfifo *fifo,
|
||||
const unsigned char *buffer, unsigned int len);
|
||||
|
|
|
@ -28,6 +28,7 @@
|
|||
#include <linux/mutex.h>
|
||||
#include <linux/timer.h>
|
||||
#include <linux/workqueue.h>
|
||||
#include <linux/kfifo.h>
|
||||
#include <scsi/iscsi_proto.h>
|
||||
#include <scsi/iscsi_if.h>
|
||||
#include <scsi/scsi_transport_iscsi.h>
|
||||
|
@ -231,7 +232,7 @@ struct iscsi_conn {
|
|||
};
|
||||
|
||||
struct iscsi_pool {
|
||||
struct kfifo *queue; /* FIFO Queue */
|
||||
struct kfifo queue; /* FIFO Queue */
|
||||
void **pool; /* Pool of elements */
|
||||
int max; /* Max number of elements */
|
||||
};
|
||||
|
|
|
@ -80,7 +80,7 @@ struct iscsi_tcp_task {
|
|||
int data_offset;
|
||||
struct iscsi_r2t_info *r2t; /* in progress solict R2T */
|
||||
struct iscsi_pool r2tpool;
|
||||
struct kfifo *r2tqueue;
|
||||
struct kfifo r2tqueue;
|
||||
void *dd_data;
|
||||
};
|
||||
|
||||
|
|
|
@ -21,7 +21,7 @@ struct srp_buf {
|
|||
struct srp_queue {
|
||||
void *pool;
|
||||
void *items;
|
||||
struct kfifo *queue;
|
||||
struct kfifo queue;
|
||||
spinlock_t lock;
|
||||
};
|
||||
|
||||
|
|
|
@ -1,6 +1,7 @@
|
|||
/*
|
||||
* A simple kernel FIFO implementation.
|
||||
* A generic kernel FIFO implementation.
|
||||
*
|
||||
* Copyright (C) 2009 Stefani Seibold <stefani@seibold.net>
|
||||
* Copyright (C) 2004 Stelian Pop <stelian@popies.net>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
|
@ -26,49 +27,51 @@
|
|||
#include <linux/kfifo.h>
|
||||
#include <linux/log2.h>
|
||||
|
||||
static void _kfifo_init(struct kfifo *fifo, unsigned char *buffer,
|
||||
unsigned int size, spinlock_t *lock)
|
||||
{
|
||||
fifo->buffer = buffer;
|
||||
fifo->size = size;
|
||||
fifo->lock = lock;
|
||||
|
||||
kfifo_reset(fifo);
|
||||
}
|
||||
|
||||
/**
|
||||
* kfifo_init - allocates a new FIFO using a preallocated buffer
|
||||
* kfifo_init - initialize a FIFO using a preallocated buffer
|
||||
* @fifo: the fifo to assign the buffer
|
||||
* @buffer: the preallocated buffer to be used.
|
||||
* @size: the size of the internal buffer, this have to be a power of 2.
|
||||
* @gfp_mask: get_free_pages mask, passed to kmalloc()
|
||||
* @lock: the lock to be used to protect the fifo buffer
|
||||
*
|
||||
* Do NOT pass the kfifo to kfifo_free() after use! Simply free the
|
||||
* &struct kfifo with kfree().
|
||||
*/
|
||||
struct kfifo *kfifo_init(unsigned char *buffer, unsigned int size,
|
||||
gfp_t gfp_mask, spinlock_t *lock)
|
||||
void kfifo_init(struct kfifo *fifo, unsigned char *buffer, unsigned int size,
|
||||
spinlock_t *lock)
|
||||
{
|
||||
struct kfifo *fifo;
|
||||
|
||||
/* size must be a power of 2 */
|
||||
BUG_ON(!is_power_of_2(size));
|
||||
|
||||
fifo = kmalloc(sizeof(struct kfifo), gfp_mask);
|
||||
if (!fifo)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
fifo->buffer = buffer;
|
||||
fifo->size = size;
|
||||
fifo->in = fifo->out = 0;
|
||||
fifo->lock = lock;
|
||||
|
||||
return fifo;
|
||||
_kfifo_init(fifo, buffer, size, lock);
|
||||
}
|
||||
EXPORT_SYMBOL(kfifo_init);
|
||||
|
||||
/**
|
||||
* kfifo_alloc - allocates a new FIFO and its internal buffer
|
||||
* @size: the size of the internal buffer to be allocated.
|
||||
* kfifo_alloc - allocates a new FIFO internal buffer
|
||||
* @fifo: the fifo to assign then new buffer
|
||||
* @size: the size of the buffer to be allocated, this have to be a power of 2.
|
||||
* @gfp_mask: get_free_pages mask, passed to kmalloc()
|
||||
* @lock: the lock to be used to protect the fifo buffer
|
||||
*
|
||||
* This function dynamically allocates a new fifo internal buffer
|
||||
*
|
||||
* The size will be rounded-up to a power of 2.
|
||||
* The buffer will be release with kfifo_free().
|
||||
* Return 0 if no error, otherwise the an error code
|
||||
*/
|
||||
struct kfifo *kfifo_alloc(unsigned int size, gfp_t gfp_mask, spinlock_t *lock)
|
||||
int kfifo_alloc(struct kfifo *fifo, unsigned int size, gfp_t gfp_mask,
|
||||
spinlock_t *lock)
|
||||
{
|
||||
unsigned char *buffer;
|
||||
struct kfifo *ret;
|
||||
|
||||
/*
|
||||
* round up to the next power of 2, since our 'let the indices
|
||||
|
@ -80,26 +83,24 @@ struct kfifo *kfifo_alloc(unsigned int size, gfp_t gfp_mask, spinlock_t *lock)
|
|||
}
|
||||
|
||||
buffer = kmalloc(size, gfp_mask);
|
||||
if (!buffer)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
if (!buffer) {
|
||||
_kfifo_init(fifo, 0, 0, NULL);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
ret = kfifo_init(buffer, size, gfp_mask, lock);
|
||||
_kfifo_init(fifo, buffer, size, lock);
|
||||
|
||||
if (IS_ERR(ret))
|
||||
kfree(buffer);
|
||||
|
||||
return ret;
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL(kfifo_alloc);
|
||||
|
||||
/**
|
||||
* kfifo_free - frees the FIFO
|
||||
* kfifo_free - frees the FIFO internal buffer
|
||||
* @fifo: the fifo to be freed.
|
||||
*/
|
||||
void kfifo_free(struct kfifo *fifo)
|
||||
{
|
||||
kfree(fifo->buffer);
|
||||
kfree(fifo);
|
||||
}
|
||||
EXPORT_SYMBOL(kfifo_free);
|
||||
|
||||
|
|
|
@ -43,7 +43,7 @@ static int bufsize = 64 * 1024;
|
|||
static const char procname[] = "dccpprobe";
|
||||
|
||||
static struct {
|
||||
struct kfifo *fifo;
|
||||
struct kfifo fifo;
|
||||
spinlock_t lock;
|
||||
wait_queue_head_t wait;
|
||||
struct timespec tstart;
|
||||
|
@ -67,7 +67,7 @@ static void printl(const char *fmt, ...)
|
|||
len += vscnprintf(tbuf+len, sizeof(tbuf)-len, fmt, args);
|
||||
va_end(args);
|
||||
|
||||
kfifo_put(dccpw.fifo, tbuf, len);
|
||||
kfifo_put(&dccpw.fifo, tbuf, len);
|
||||
wake_up(&dccpw.wait);
|
||||
}
|
||||
|
||||
|
@ -109,7 +109,7 @@ static struct jprobe dccp_send_probe = {
|
|||
|
||||
static int dccpprobe_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
kfifo_reset(dccpw.fifo);
|
||||
kfifo_reset(&dccpw.fifo);
|
||||
getnstimeofday(&dccpw.tstart);
|
||||
return 0;
|
||||
}
|
||||
|
@ -131,11 +131,11 @@ static ssize_t dccpprobe_read(struct file *file, char __user *buf,
|
|||
return -ENOMEM;
|
||||
|
||||
error = wait_event_interruptible(dccpw.wait,
|
||||
__kfifo_len(dccpw.fifo) != 0);
|
||||
__kfifo_len(&dccpw.fifo) != 0);
|
||||
if (error)
|
||||
goto out_free;
|
||||
|
||||
cnt = kfifo_get(dccpw.fifo, tbuf, len);
|
||||
cnt = kfifo_get(&dccpw.fifo, tbuf, len);
|
||||
error = copy_to_user(buf, tbuf, cnt) ? -EFAULT : 0;
|
||||
|
||||
out_free:
|
||||
|
@ -156,10 +156,8 @@ static __init int dccpprobe_init(void)
|
|||
|
||||
init_waitqueue_head(&dccpw.wait);
|
||||
spin_lock_init(&dccpw.lock);
|
||||
dccpw.fifo = kfifo_alloc(bufsize, GFP_KERNEL, &dccpw.lock);
|
||||
if (IS_ERR(dccpw.fifo))
|
||||
return PTR_ERR(dccpw.fifo);
|
||||
|
||||
if (kfifo_alloc(&dccpw.fifo, bufsize, GFP_KERNEL, &dccpw.lock))
|
||||
return ret;
|
||||
if (!proc_net_fops_create(&init_net, procname, S_IRUSR, &dccpprobe_fops))
|
||||
goto err0;
|
||||
|
||||
|
@ -172,14 +170,14 @@ static __init int dccpprobe_init(void)
|
|||
err1:
|
||||
proc_net_remove(&init_net, procname);
|
||||
err0:
|
||||
kfifo_free(dccpw.fifo);
|
||||
kfifo_free(&dccpw.fifo);
|
||||
return ret;
|
||||
}
|
||||
module_init(dccpprobe_init);
|
||||
|
||||
static __exit void dccpprobe_exit(void)
|
||||
{
|
||||
kfifo_free(dccpw.fifo);
|
||||
kfifo_free(&dccpw.fifo);
|
||||
proc_net_remove(&init_net, procname);
|
||||
unregister_jprobe(&dccp_send_probe);
|
||||
|
||||
|
|
Loading…
Reference in New Issue
Block a user