Use helpers to obtain task pid in printks

The task_struct->pid member is going to be deprecated, so start
using the helpers (task_pid_nr/task_pid_vnr/task_pid_nr_ns) in
the kernel.

The first thing to start with is the pid, printed to dmesg - in
this case we may safely use task_pid_nr(). Besides, printks produce
more (much more) than a half of all the explicit pid usage.

[akpm@linux-foundation.org: git-drm went and changed lots of stuff]
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: Dave Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/char/drm/drm_bufs.c

@@ -1456,7 +1456,7 @@ int drm_freebufs(struct drm_device *dev, void *data,
 		buf = dma->buflist[idx];
 		if (buf->file_priv != file_priv) {
 			DRM_ERROR("Process %d freeing buffer not owned\n",
-				  current->pid);
+				  task_pid_nr(current));
 			return -EINVAL;
 		}
 		drm_free_buffer(dev, buf);

drivers/char/drm/drm_drv.c

@@ -463,7 +463,7 @@ int drm_ioctl(struct inode *inode, struct file *filp,
 	++file_priv->ioctl_count;
 
 	DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n",
-		  current->pid, cmd, nr,
+		  task_pid_nr(current), cmd, nr,
 		  (long)old_encode_dev(file_priv->head->device),
 		  file_priv->authenticated);
 

drivers/char/drm/drm_fops.c

@@ -234,7 +234,7 @@ static int drm_open_helper(struct inode *inode, struct file *filp,
 	if (!drm_cpu_valid())
 		return -EINVAL;
 
-	DRM_DEBUG("pid = %d, minor = %d\n", current->pid, minor);
+	DRM_DEBUG("pid = %d, minor = %d\n", task_pid_nr(current), minor);
 
 	priv = drm_alloc(sizeof(*priv), DRM_MEM_FILES);
 	if (!priv)
@@ -244,7 +244,7 @@ static int drm_open_helper(struct inode *inode, struct file *filp,
 	filp->private_data = priv;
 	priv->filp = filp;
 	priv->uid = current->euid;
-	priv->pid = current->pid;
+	priv->pid = task_pid_nr(current);
 	priv->minor = minor;
 	priv->head = drm_heads[minor];
 	priv->ioctl_count = 0;
@@ -339,7 +339,8 @@ int drm_release(struct inode *inode, struct file *filp)
 	 */
 
 	DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
-		  current->pid, (long)old_encode_dev(file_priv->head->device),
+		  task_pid_nr(current),
+		  (long)old_encode_dev(file_priv->head->device),
 		  dev->open_count);
 
 	if (dev->driver->reclaim_buffers_locked && dev->lock.hw_lock) {

drivers/char/drm/drm_lock.c

@@ -58,12 +58,12 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv)
 
 	if (lock->context == DRM_KERNEL_CONTEXT) {
 		DRM_ERROR("Process %d using kernel context %d\n",
-			  current->pid, lock->context);
+			  task_pid_nr(current), lock->context);
 		return -EINVAL;
 	}
 
 	DRM_DEBUG("%d (pid %d) requests lock (0x%08x), flags = 0x%08x\n",
-		  lock->context, current->pid,
+		  lock->context, task_pid_nr(current),
 		  dev->lock.hw_lock->lock, lock->flags);
 
 	if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE))
@@ -153,7 +153,7 @@ int drm_unlock(struct drm_device *dev, void *data, struct drm_file *file_priv)
 
 	if (lock->context == DRM_KERNEL_CONTEXT) {
 		DRM_ERROR("Process %d using kernel context %d\n",
-			  current->pid, lock->context);
+			  task_pid_nr(current), lock->context);
 		return -EINVAL;
 	}
 

drivers/char/drm/drm_os_linux.h

@@ -7,7 +7,7 @@
 #include <linux/delay.h>
 
 /** Current process ID */
-#define DRM_CURRENTPID			current->pid
+#define DRM_CURRENTPID			task_pid_nr(current)
 #define DRM_SUSER(p)			capable(CAP_SYS_ADMIN)
 #define DRM_UDELAY(d)			udelay(d)
 /** Read a byte from a MMIO region */

drivers/char/drm/i810_dma.c

@@ -1024,7 +1024,7 @@ static int i810_getbuf(struct drm_device *dev, void *data,
 	retcode = i810_dma_get_buffer(dev, d, file_priv);
 
 	DRM_DEBUG("i810_dma: %d returning %d, granted = %d\n",
-		  current->pid, retcode, d->granted);
+		  task_pid_nr(current), retcode, d->granted);
 
 	sarea_priv->last_dispatch = (int)hw_status[5];
 

drivers/char/drm/i830_dma.c

@@ -1409,7 +1409,7 @@ static int i830_getbuf(struct drm_device *dev, void *data,
 	retcode = i830_dma_get_buffer(dev, d, file_priv);
 
 	DRM_DEBUG("i830_dma: %d returning %d, granted = %d\n",
-		  current->pid, retcode, d->granted);
+		  task_pid_nr(current), retcode, d->granted);
 
 	sarea_priv->last_dispatch = (int)hw_status[5];
 

drivers/char/sx.c

@@ -1467,7 +1467,7 @@ static int sx_open(struct tty_struct *tty, struct file *filp)
 
 	line = tty->index;
 	sx_dprintk(SX_DEBUG_OPEN, "%d: opening line %d. tty=%p ctty=%p, "
-			"np=%d)\n", current->pid, line, tty,
+			"np=%d)\n", task_pid_nr(current), line, tty,
 			current->signal->tty, sx_nports);
 
 	if ((line < 0) || (line >= SX_NPORTS) || (line >= sx_nports))

drivers/char/tty_io.c

@@ -3530,7 +3530,7 @@ void __do_SAK(struct tty_struct *tty)
 	do_each_pid_task(session, PIDTYPE_SID, p) {
 		printk(KERN_NOTICE "SAK: killed process %d"
 			" (%s): task_session_nr(p)==tty->session\n",
-			p->pid, p->comm);
+			task_pid_nr(p), p->comm);
 		send_sig(SIGKILL, p, 1);
 	} while_each_pid_task(session, PIDTYPE_SID, p);
 	/* Now kill any processes that happen to have the
@@ -3540,7 +3540,7 @@ void __do_SAK(struct tty_struct *tty)
 		if (p->signal->tty == tty) {
 			printk(KERN_NOTICE "SAK: killed process %d"
 			    " (%s): task_session_nr(p)==tty->session\n",
-			    p->pid, p->comm);
+			    task_pid_nr(p), p->comm);
 			send_sig(SIGKILL, p, 1);
 			continue;
 		}
@@ -3560,7 +3560,7 @@ void __do_SAK(struct tty_struct *tty)
 				    filp->private_data == tty) {
 					printk(KERN_NOTICE "SAK: killed process %d"
 					    " (%s): fd#%d opened to the tty\n",
-					    p->pid, p->comm, i);
+					    task_pid_nr(p), p->comm, i);
 					force_sig(SIGKILL, p);
 					break;
 				}