UBI: rework scrubbing messages

If bit-flips happen often, UBI prints to many messages. Lessen
the amount by only printing the messages when the PEB has been
scrubbed. Also, print torturing messages.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

2 files changed, 12 insertions, 2 deletions

diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c
index 27b9c2c2fc60..2bebb39d19b3 100644
--- a/drivers/mtd/ubi/io.c
+++ b/drivers/mtd/ubi/io.c
@@ -156,8 +156,12 @@ retry:
                         /*
                          * -EUCLEAN is reported if there was a bit-flip which
                          * was corrected, so this is harmless.
+                         *
+                         * We do not report about it here unless debugging is
+                         * enabled. A corresponding message will be printed
+                         * later, when it is has been scrubbed.
                          */
-                        ubi_msg("fixable bit-flip detected at PEB %d", pnum);
+                        dbg_msg("fixable bit-flip detected at PEB %d", pnum);
                         ubi_assert(len == read);
                         return UBI_IO_BITFLIPS;
                 }
@@ -391,6 +395,7 @@ static int torture_peb(struct ubi_device *ubi, int pnum)
 {
         int err, i, patt_count;
 
+        ubi_msg("run torture test for PEB %d", pnum);
         patt_count = ARRAY_SIZE(patterns);
         ubi_assert(patt_count > 0);
 
@@ -434,6 +439,7 @@ static int torture_peb(struct ubi_device *ubi, int pnum)
         }
 
         err = patt_count;
+        ubi_msg("PEB %d passed torture test, do not mark it a bad", pnum);
 
 out:
         mutex_unlock(&ubi->buf_mutex);
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 761952ba125b..6821952bcdb8 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -873,6 +873,10 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk,
         }
 
         ubi_free_vid_hdr(ubi, vid_hdr);
+        if (scrubbing && !protect)
+                ubi_msg("scrubbed PEB %d, data moved to PEB %d",
+                        e1->pnum, e2->pnum);
+
         spin_lock(&ubi->wl_lock);
         if (protect)
                 prot_tree_add(ubi, e1, pe, protect);
@@ -1231,7 +1235,7 @@ int ubi_wl_scrub_peb(struct ubi_device *ubi, int pnum)
 {
         struct ubi_wl_entry *e;
 
-        ubi_msg("schedule PEB %d for scrubbing", pnum);
+        dbg_msg("schedule PEB %d for scrubbing", pnum);
 
 retry:
         spin_lock(&ubi->wl_lock);