md: remove PRINTK and dprintk debugging and use pr_debug

Being able to dynamically enable these make them much more useful.
Signed-off-by: NeilBrown <neilb@suse.de>

drivers/md/bitmap.c

@@ -50,14 +50,6 @@
 #define INJECT_FATAL_FAULT_3 0 /* undef */
 #endif
 
-#ifndef PRINTK
-#  if DEBUG > 0
-#    define PRINTK(x...) printk(KERN_DEBUG x)
-#  else
-#    define PRINTK(x...)
-#  endif
-#endif
-
 static inline char *bmname(struct bitmap *bitmap)
 {
 	return bitmap->mddev ? mdname(bitmap->mddev) : "mdX";
@@ -78,8 +70,8 @@ static unsigned char *bitmap_alloc_page(struct bitmap *bitmap)
 	if (!page)
 		printk("%s: bitmap_alloc_page FAILED\n", bmname(bitmap));
 	else
-		PRINTK("%s: bitmap_alloc_page: allocated page at %p\n",
-			bmname(bitmap), page);
+		pr_debug("%s: bitmap_alloc_page: allocated page at %p\n",
+			 bmname(bitmap), page);
 	return page;
 }
 
@@ -88,7 +80,7 @@ static unsigned char *bitmap_alloc_page(struct bitmap *bitmap)
  */
 static void bitmap_free_page(struct bitmap *bitmap, unsigned char *page)
 {
-	PRINTK("%s: bitmap_free_page: free page %p\n", bmname(bitmap), page);
+	pr_debug("%s: bitmap_free_page: free page %p\n", bmname(bitmap), page);
 	kfree(page);
 }
 
@@ -133,8 +125,8 @@ __acquires(bitmap->lock)
 	spin_lock_irq(&bitmap->lock);
 
 	if (mappage == NULL) {
-		PRINTK("%s: bitmap map page allocation failed, hijacking\n",
-			bmname(bitmap));
+		pr_debug("%s: bitmap map page allocation failed, hijacking\n",
+			 bmname(bitmap));
 		/* failed - set the hijacked flag so that we can use the
 		 * pointer as a counter */
 		if (!bitmap->bp[page].map)
@@ -409,8 +401,8 @@ static struct page *read_page(struct file *file, unsigned long index,
 	struct buffer_head *bh;
 	sector_t block;
 
-	PRINTK("read bitmap file (%dB @ %llu)\n", (int)PAGE_SIZE,
-			(unsigned long long)index << PAGE_SHIFT);
+	pr_debug("read bitmap file (%dB @ %llu)\n", (int)PAGE_SIZE,
+		 (unsigned long long)index << PAGE_SHIFT);
 
 	page = alloc_page(GFP_KERNEL);
 	if (!page)
@@ -920,7 +912,7 @@ static void bitmap_file_set_bit(struct bitmap *bitmap, sector_t block)
 	else
 		__set_bit_le(bit, kaddr);
 	kunmap_atomic(kaddr, KM_USER0);
-	PRINTK("set file bit %lu page %lu\n", bit, page->index);
+	pr_debug("set file bit %lu page %lu\n", bit, page->index);
 	/* record page number so it gets flushed to disk when unplug occurs */
 	set_page_attr(bitmap, page, BITMAP_PAGE_DIRTY);
 }
@@ -1364,8 +1356,8 @@ int bitmap_startwrite(struct bitmap *bitmap, sector_t offset, unsigned long sect
 		if (bw > bitmap->behind_writes_used)
 			bitmap->behind_writes_used = bw;
 
-		PRINTK(KERN_DEBUG "inc write-behind count %d/%d\n",
-		       bw, bitmap->max_write_behind);
+		pr_debug("inc write-behind count %d/%lu\n",
+			 bw, bitmap->mddev->bitmap_info.max_write_behind);
 	}
 
 	while (sectors) {
@@ -1424,8 +1416,9 @@ void bitmap_endwrite(struct bitmap *bitmap, sector_t offset, unsigned long secto
 	if (behind) {
 		if (atomic_dec_and_test(&bitmap->behind_writes))
 			wake_up(&bitmap->behind_wait);
-		PRINTK(KERN_DEBUG "dec write-behind count %d/%d\n",
-		  atomic_read(&bitmap->behind_writes), bitmap->max_write_behind);
+		pr_debug("dec write-behind count %d/%lu\n",
+			 atomic_read(&bitmap->behind_writes),
+			 bitmap->mddev->bitmap_info.max_write_behind);
 	}
 	if (bitmap->mddev->degraded)
 		/* Never clear bits or update events_cleared when degraded */

drivers/md/md.c

@@ -54,9 +54,6 @@
 #include "md.h"
 #include "bitmap.h"
 
-#define DEBUG 0
-#define dprintk(x...) ((void)(DEBUG && printk(x)))
-
 #ifndef MODULE
 static void autostart_arrays(int part);
 #endif
@@ -2442,27 +2439,23 @@ static void md_update_sb(mddev_t * mddev, int force_change)
 	sync_sbs(mddev, nospares);
 	spin_unlock_irq(&mddev->write_lock);
 
-	dprintk(KERN_INFO 
-		"md: updating %s RAID superblock on device (in sync %d)\n",
-		mdname(mddev),mddev->in_sync);
+	pr_debug("md: updating %s RAID superblock on device (in sync %d)\n",
+		 mdname(mddev), mddev->in_sync);
 
 	bitmap_update_sb(mddev->bitmap);
 	list_for_each_entry(rdev, &mddev->disks, same_set) {
 		char b[BDEVNAME_SIZE];
-		dprintk(KERN_INFO "md: ");
+
 		if (rdev->sb_loaded != 1)
 			continue; /* no noise on spare devices */
-		if (test_bit(Faulty, &rdev->flags))
-			dprintk("(skipping faulty ");
 
-		dprintk("%s ", bdevname(rdev->bdev,b));
 		if (!test_bit(Faulty, &rdev->flags)) {
 			md_super_write(mddev,rdev,
 				       rdev->sb_start, rdev->sb_size,
 				       rdev->sb_page);
-			dprintk(KERN_INFO "(write) %s's sb offset: %llu\n",
-				bdevname(rdev->bdev,b),
-				(unsigned long long)rdev->sb_start);
+			pr_debug("md: (write) %s's sb offset: %llu\n",
+				 bdevname(rdev->bdev, b),
+				 (unsigned long long)rdev->sb_start);
 			rdev->sb_events = mddev->events;
 			if (rdev->badblocks.size) {
 				md_super_write(mddev, rdev,
@@ -2473,7 +2466,8 @@ static void md_update_sb(mddev_t * mddev, int force_change)
 			}
 
 		} else
-			dprintk(")\n");
+			pr_debug("md: %s (skipping faulty)\n",
+				 bdevname(rdev->bdev, b));
 		if (mddev->level == LEVEL_MULTIPATH)
 			/* only need to write one superblock... */
 			break;
@@ -6408,7 +6402,7 @@ static int md_thread(void * arg)
 void md_wakeup_thread(mdk_thread_t *thread)
 {
 	if (thread) {
-		dprintk("md: waking up MD thread %s.\n", thread->tsk->comm);
+		pr_debug("md: waking up MD thread %s.\n", thread->tsk->comm);
 		set_bit(THREAD_WAKEUP, &thread->flags);
 		wake_up(&thread->wqueue);
 	}
@@ -6444,7 +6438,7 @@ void md_unregister_thread(mdk_thread_t **threadp)
 	mdk_thread_t *thread = *threadp;
 	if (!thread)
 		return;
-	dprintk("interrupting MD-thread pid %d\n", task_pid_nr(thread->tsk));
+	pr_debug("interrupting MD-thread pid %d\n", task_pid_nr(thread->tsk));
 	/* Locking ensures that mddev_unlock does not wake_up a
 	 * non-existent thread
 	 */
@@ -8112,7 +8106,7 @@ static struct notifier_block md_notifier = {
 
 static void md_geninit(void)
 {
-	dprintk("md: sizeof(mdp_super_t) = %d\n", (int)sizeof(mdp_super_t));
+	pr_debug("md: sizeof(mdp_super_t) = %d\n", (int)sizeof(mdp_super_t));
 
 	proc_create("mdstat", S_IRUGO, NULL, &md_seq_fops);
 }

drivers/md/raid1.c

@@ -40,9 +40,6 @@
 #include "raid1.h"
 #include "bitmap.h"
 
-#define DEBUG 0
-#define PRINTK(x...) do { if (DEBUG) printk(x); } while (0)
-
 /*
  * Number of guaranteed r1bios in case of extreme VM load:
  */
@@ -246,11 +243,11 @@ static void raid_end_bio_io(r1bio_t *r1_bio)
 
 	/* if nobody has done the final endio yet, do it now */
 	if (!test_and_set_bit(R1BIO_Returned, &r1_bio->state)) {
-		PRINTK(KERN_DEBUG "raid1: sync end %s on sectors %llu-%llu\n",
-			(bio_data_dir(bio) == WRITE) ? "write" : "read",
-			(unsigned long long) bio->bi_sector,
-			(unsigned long long) bio->bi_sector +
-				(bio->bi_size >> 9) - 1);
+		pr_debug("raid1: sync end %s on sectors %llu-%llu\n",
+			 (bio_data_dir(bio) == WRITE) ? "write" : "read",
+			 (unsigned long long) bio->bi_sector,
+			 (unsigned long long) bio->bi_sector +
+			 (bio->bi_size >> 9) - 1);
 
 		call_bio_endio(r1_bio);
 	}
@@ -431,10 +428,11 @@ static void raid1_end_write_request(struct bio *bio, int error)
 			/* Maybe we can return now */
 			if (!test_and_set_bit(R1BIO_Returned, &r1_bio->state)) {
 				struct bio *mbio = r1_bio->master_bio;
-				PRINTK(KERN_DEBUG "raid1: behind end write sectors %llu-%llu\n",
-				       (unsigned long long) mbio->bi_sector,
-				       (unsigned long long) mbio->bi_sector +
-				       (mbio->bi_size >> 9) - 1);
+				pr_debug("raid1: behind end write sectors"
+					 " %llu-%llu\n",
+					 (unsigned long long) mbio->bi_sector,
+					 (unsigned long long) mbio->bi_sector +
+					 (mbio->bi_size >> 9) - 1);
 				call_bio_endio(r1_bio);
 			}
 		}
@@ -795,7 +793,7 @@ static void alloc_behind_pages(struct bio *bio, r1bio_t *r1_bio)
 		if (bvecs[i].bv_page)
 			put_page(bvecs[i].bv_page);
 	kfree(bvecs);
-	PRINTK("%dB behind alloc failed, doing sync I/O\n", bio->bi_size);
+	pr_debug("%dB behind alloc failed, doing sync I/O\n", bio->bi_size);
 }
 
 static int make_request(mddev_t *mddev, struct bio * bio)