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Subject[md-accel PATCH 06/19] raid5: replace custom debug PRINTKs with standard pr_debug
Date
Replaces PRINTK with pr_debug, and kills the RAID5_DEBUG definition in
favor of the global DEBUG definition. To get local debug messages just add
'#define DEBUG' to the top of the file.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
drivers/md/raid5.c | 116 ++++++++++++++++++++++++++--------------------------
1 files changed, 58 insertions(+), 58 deletions(-)
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 94e0920..d21fa7a 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -80,7 +80,6 @@
/*
* The following can be used to debug the driver
*/
-#define RAID5_DEBUG 0
#define RAID5_PARANOIA 1
#if RAID5_PARANOIA && defined(CONFIG_SMP)
# define CHECK_DEVLOCK() assert_spin_locked(&conf->device_lock)
@@ -88,8 +87,7 @@
# define CHECK_DEVLOCK()
#endif

-#define PRINTK(x...) ((void)(RAID5_DEBUG && printk(x)))
-#if RAID5_DEBUG
+#ifdef DEBUG
#define inline
#define __inline__
#endif
@@ -152,7 +150,8 @@ static void release_stripe(struct stripe_head *sh)

static inline void remove_hash(struct stripe_head *sh)
{
- PRINTK("remove_hash(), stripe %llu\n", (unsigned long long)sh->sector);
+ pr_debug("remove_hash(), stripe %llu\n",
+ (unsigned long long)sh->sector);

hlist_del_init(&sh->hash);
}
@@ -161,7 +160,8 @@ static inline void insert_hash(raid5_conf_t *conf, struct stripe_head *sh)
{
struct hlist_head *hp = stripe_hash(conf, sh->sector);

- PRINTK("insert_hash(), stripe %llu\n", (unsigned long long)sh->sector);
+ pr_debug("insert_hash(), stripe %llu\n",
+ (unsigned long long)sh->sector);

CHECK_DEVLOCK();
hlist_add_head(&sh->hash, hp);
@@ -226,7 +226,7 @@ static void init_stripe(struct stripe_head *sh, sector_t sector, int pd_idx, int
BUG_ON(test_bit(STRIPE_HANDLE, &sh->state));

CHECK_DEVLOCK();
- PRINTK("init_stripe called, stripe %llu\n",
+ pr_debug("init_stripe called, stripe %llu\n",
(unsigned long long)sh->sector);

remove_hash(sh);
@@ -260,11 +260,11 @@ static struct stripe_head *__find_stripe(raid5_conf_t *conf, sector_t sector, in
struct hlist_node *hn;

CHECK_DEVLOCK();
- PRINTK("__find_stripe, sector %llu\n", (unsigned long long)sector);
+ pr_debug("__find_stripe, sector %llu\n", (unsigned long long)sector);
hlist_for_each_entry(sh, hn, stripe_hash(conf, sector), hash)
if (sh->sector == sector && sh->disks == disks)
return sh;
- PRINTK("__stripe %llu not in cache\n", (unsigned long long)sector);
+ pr_debug("__stripe %llu not in cache\n", (unsigned long long)sector);
return NULL;
}

@@ -276,7 +276,7 @@ static struct stripe_head *get_active_stripe(raid5_conf_t *conf, sector_t sector
{
struct stripe_head *sh;

- PRINTK("get_stripe, sector %llu\n", (unsigned long long)sector);
+ pr_debug("get_stripe, sector %llu\n", (unsigned long long)sector);

spin_lock_irq(&conf->device_lock);

@@ -537,8 +537,8 @@ static int raid5_end_read_request(struct bio * bi, unsigned int bytes_done,
if (bi == &sh->dev[i].req)
break;

- PRINTK("end_read_request %llu/%d, count: %d, uptodate %d.\n",
- (unsigned long long)sh->sector, i, atomic_read(&sh->count),
+ pr_debug("end_read_request %llu/%d, count: %d, uptodate %d.\n",
+ (unsigned long long)sh->sector, i, atomic_read(&sh->count),
uptodate);
if (i == disks) {
BUG();
@@ -613,7 +613,7 @@ static int raid5_end_write_request (struct bio *bi, unsigned int bytes_done,
if (bi == &sh->dev[i].req)
break;

- PRINTK("end_write_request %llu/%d, count %d, uptodate: %d.\n",
+ pr_debug("end_write_request %llu/%d, count %d, uptodate: %d.\n",
(unsigned long long)sh->sector, i, atomic_read(&sh->count),
uptodate);
if (i == disks) {
@@ -658,7 +658,7 @@ static void error(mddev_t *mddev, mdk_rdev_t *rdev)
{
char b[BDEVNAME_SIZE];
raid5_conf_t *conf = (raid5_conf_t *) mddev->private;
- PRINTK("raid5: error called\n");
+ pr_debug("raid5: error called\n");

if (!test_bit(Faulty, &rdev->flags)) {
set_bit(MD_CHANGE_DEVS, &mddev->flags);
@@ -929,7 +929,7 @@ static void compute_block(struct stripe_head *sh, int dd_idx)
int i, count, disks = sh->disks;
void *ptr[MAX_XOR_BLOCKS], *dest, *p;

- PRINTK("compute_block, stripe %llu, idx %d\n",
+ pr_debug("compute_block, stripe %llu, idx %d\n",
(unsigned long long)sh->sector, dd_idx);

dest = page_address(sh->dev[dd_idx].page);
@@ -960,7 +960,7 @@ static void compute_parity5(struct stripe_head *sh, int method)
void *ptr[MAX_XOR_BLOCKS], *dest;
struct bio *chosen;

- PRINTK("compute_parity5, stripe %llu, method %d\n",
+ pr_debug("compute_parity5, stripe %llu, method %d\n",
(unsigned long long)sh->sector, method);

count = 0;
@@ -1058,7 +1058,7 @@ static void compute_parity6(struct stripe_head *sh, int method)
qd_idx = raid6_next_disk(pd_idx, disks);
d0_idx = raid6_next_disk(qd_idx, disks);

- PRINTK("compute_parity, stripe %llu, method %d\n",
+ pr_debug("compute_parity, stripe %llu, method %d\n",
(unsigned long long)sh->sector, method);

switch(method) {
@@ -1136,7 +1136,7 @@ static void compute_block_1(struct stripe_head *sh, int dd_idx, int nozero)
int pd_idx = sh->pd_idx;
int qd_idx = raid6_next_disk(pd_idx, disks);

- PRINTK("compute_block_1, stripe %llu, idx %d\n",
+ pr_debug("compute_block_1, stripe %llu, idx %d\n",
(unsigned long long)sh->sector, dd_idx);

if ( dd_idx == qd_idx ) {
@@ -1183,7 +1183,7 @@ static void compute_block_2(struct stripe_head *sh, int dd_idx1, int dd_idx2)
BUG_ON(faila == failb);
if ( failb < faila ) { int tmp = faila; faila = failb; failb = tmp; }

- PRINTK("compute_block_2, stripe %llu, idx %d,%d (%d,%d)\n",
+ pr_debug("compute_block_2, stripe %llu, idx %d,%d (%d,%d)\n",
(unsigned long long)sh->sector, dd_idx1, dd_idx2, faila, failb);

if ( failb == disks-1 ) {
@@ -1242,7 +1242,7 @@ static int add_stripe_bio(struct stripe_head *sh, struct bio *bi, int dd_idx, in
raid5_conf_t *conf = sh->raid_conf;
int firstwrite=0;

- PRINTK("adding bh b#%llu to stripe s#%llu\n",
+ pr_debug("adding bh b#%llu to stripe s#%llu\n",
(unsigned long long)bi->bi_sector,
(unsigned long long)sh->sector);

@@ -1271,7 +1271,7 @@ static int add_stripe_bio(struct stripe_head *sh, struct bio *bi, int dd_idx, in
spin_unlock_irq(&conf->device_lock);
spin_unlock(&sh->lock);

- PRINTK("added bi b#%llu to stripe s#%llu, disk %d.\n",
+ pr_debug("added bi b#%llu to stripe s#%llu, disk %d.\n",
(unsigned long long)bi->bi_sector,
(unsigned long long)sh->sector, dd_idx);

@@ -1431,14 +1431,14 @@ static void handle_issuing_new_read_requests5(struct stripe_head *sh,
* by computing it, but we might not be able to
*/
if (s->uptodate == disks-1) {
- PRINTK("Computing block %d\n", i);
+ pr_debug("Computing block %d\n", i);
compute_block(sh, i);
s->uptodate++;
} else if (test_bit(R5_Insync, &dev->flags)) {
set_bit(R5_LOCKED, &dev->flags);
set_bit(R5_Wantread, &dev->flags);
s->locked++;
- PRINTK("Reading block %d (sync=%d)\n",
+ pr_debug("Reading block %d (sync=%d)\n",
i, s->syncing);
}
}
@@ -1468,7 +1468,7 @@ static void handle_issuing_new_read_requests6(struct stripe_head *sh,
* by computing it, but we might not be able to
*/
if (s->uptodate == disks-1) {
- PRINTK("Computing stripe %llu block %d\n",
+ pr_debug("Computing stripe %llu block %d\n",
(unsigned long long)sh->sector, i);
compute_block_1(sh, i, 0);
s->uptodate++;
@@ -1485,7 +1485,7 @@ static void handle_issuing_new_read_requests6(struct stripe_head *sh,
break;
}
BUG_ON(other < 0);
- PRINTK("Computing stripe %llu blocks %d,%d\n",
+ pr_debug("Computing stripe %llu blocks %d,%d\n",
(unsigned long long)sh->sector,
i, other);
compute_block_2(sh, i, other);
@@ -1494,7 +1494,7 @@ static void handle_issuing_new_read_requests6(struct stripe_head *sh,
set_bit(R5_LOCKED, &dev->flags);
set_bit(R5_Wantread, &dev->flags);
s->locked++;
- PRINTK("Reading block %d (sync=%d)\n",
+ pr_debug("Reading block %d (sync=%d)\n",
i, s->syncing);
}
}
@@ -1522,7 +1522,7 @@ static void handle_completed_write_requests(raid5_conf_t *conf,
/* We can return any write requests */
struct bio *wbi, *wbi2;
int bitmap_end = 0;
- PRINTK("Return write for disc %d\n", i);
+ pr_debug("Return write for disc %d\n", i);
spin_lock_irq(&conf->device_lock);
wbi = dev->written;
dev->written = NULL;
@@ -1574,7 +1574,7 @@ static void handle_issuing_new_write_requests5(raid5_conf_t *conf,
rcw += 2*disks;
}
}
- PRINTK("for sector %llu, rmw=%d rcw=%d\n",
+ pr_debug("for sector %llu, rmw=%d rcw=%d\n",
(unsigned long long)sh->sector, rmw, rcw);
set_bit(STRIPE_HANDLE, &sh->state);
if (rmw < rcw && rmw > 0)
@@ -1587,7 +1587,7 @@ static void handle_issuing_new_write_requests5(raid5_conf_t *conf,
test_bit(R5_Insync, &dev->flags)) {
if (
test_bit(STRIPE_PREREAD_ACTIVE, &sh->state)) {
- PRINTK("Read_old block "
+ pr_debug("Read_old block "
"%d for r-m-w\n", i);
set_bit(R5_LOCKED, &dev->flags);
set_bit(R5_Wantread, &dev->flags);
@@ -1609,7 +1609,7 @@ static void handle_issuing_new_write_requests5(raid5_conf_t *conf,
test_bit(R5_Insync, &dev->flags)) {
if (
test_bit(STRIPE_PREREAD_ACTIVE, &sh->state)) {
- PRINTK("Read_old block "
+ pr_debug("Read_old block "
"%d for Reconstruct\n", i);
set_bit(R5_LOCKED, &dev->flags);
set_bit(R5_Wantread, &dev->flags);
@@ -1625,13 +1625,13 @@ static void handle_issuing_new_write_requests5(raid5_conf_t *conf,
*/
if (s->locked == 0 && (rcw == 0 || rmw == 0) &&
!test_bit(STRIPE_BIT_DELAY, &sh->state)) {
- PRINTK("Computing parity...\n");
+ pr_debug("Computing parity...\n");
compute_parity5(sh, rcw == 0 ?
RECONSTRUCT_WRITE : READ_MODIFY_WRITE);
/* now every locked buffer is ready to be written */
for (i = disks; i--; )
if (test_bit(R5_LOCKED, &sh->dev[i].flags)) {
- PRINTK("Writing block %d\n", i);
+ pr_debug("Writing block %d\n", i);
s->locked++;
set_bit(R5_Wantwrite, &sh->dev[i].flags);
if (!test_bit(R5_Insync, &sh->dev[i].flags)
@@ -1663,13 +1663,13 @@ static void handle_issuing_new_write_requests6(raid5_conf_t *conf,
!test_bit(R5_UPTODATE, &dev->flags)) {
if (test_bit(R5_Insync, &dev->flags)) rcw++;
else {
- PRINTK("raid6: must_compute: "
+ pr_debug("raid6: must_compute: "
"disk %d flags=%#lx\n", i, dev->flags);
must_compute++;
}
}
}
- PRINTK("for sector %llu, rcw=%d, must_compute=%d\n",
+ pr_debug("for sector %llu, rcw=%d, must_compute=%d\n",
(unsigned long long)sh->sector, rcw, must_compute);
set_bit(STRIPE_HANDLE, &sh->state);

@@ -1684,14 +1684,14 @@ static void handle_issuing_new_write_requests6(raid5_conf_t *conf,
test_bit(R5_Insync, &dev->flags)) {
if (
test_bit(STRIPE_PREREAD_ACTIVE, &sh->state)) {
- PRINTK("Read_old stripe %llu "
+ pr_debug("Read_old stripe %llu "
"block %d for Reconstruct\n",
(unsigned long long)sh->sector, i);
set_bit(R5_LOCKED, &dev->flags);
set_bit(R5_Wantread, &dev->flags);
s->locked++;
} else {
- PRINTK("Request delayed stripe %llu "
+ pr_debug("Request delayed stripe %llu "
"block %d for Reconstruct\n",
(unsigned long long)sh->sector, i);
set_bit(STRIPE_DELAYED, &sh->state);
@@ -1721,13 +1721,13 @@ static void handle_issuing_new_write_requests6(raid5_conf_t *conf,
}
}

- PRINTK("Computing parity for stripe %llu\n",
+ pr_debug("Computing parity for stripe %llu\n",
(unsigned long long)sh->sector);
compute_parity6(sh, RECONSTRUCT_WRITE);
/* now every locked buffer is ready to be written */
for (i = disks; i--; )
if (test_bit(R5_LOCKED, &sh->dev[i].flags)) {
- PRINTK("Writing stripe %llu block %d\n",
+ pr_debug("Writing stripe %llu block %d\n",
(unsigned long long)sh->sector, i);
s->locked++;
set_bit(R5_Wantwrite, &sh->dev[i].flags);
@@ -1956,7 +1956,7 @@ static void handle_stripe5(struct stripe_head *sh)
struct r5dev *dev;

memset(&s, 0, sizeof(s));
- PRINTK("handling stripe %llu, cnt=%d, pd_idx=%d\n",
+ pr_debug("handling stripe %llu, cnt=%d, pd_idx=%d\n",
(unsigned long long)sh->sector, atomic_read(&sh->count),
sh->pd_idx);

@@ -1975,12 +1975,12 @@ static void handle_stripe5(struct stripe_head *sh)
struct r5dev *dev = &sh->dev[i];
clear_bit(R5_Insync, &dev->flags);

- PRINTK("check %d: state 0x%lx read %p write %p written %p\n",
+ pr_debug("check %d: state 0x%lx read %p write %p written %p\n",
i, dev->flags, dev->toread, dev->towrite, dev->written);
/* maybe we can reply to a read */
if (test_bit(R5_UPTODATE, &dev->flags) && dev->toread) {
struct bio *rbi, *rbi2;
- PRINTK("Return read for disc %d\n", i);
+ pr_debug("Return read for disc %d\n", i);
spin_lock_irq(&conf->device_lock);
rbi = dev->toread;
dev->toread = NULL;
@@ -2027,7 +2027,7 @@ static void handle_stripe5(struct stripe_head *sh)
set_bit(R5_Insync, &dev->flags);
}
rcu_read_unlock();
- PRINTK("locked=%d uptodate=%d to_read=%d"
+ pr_debug("locked=%d uptodate=%d to_read=%d"
" to_write=%d failed=%d failed_num=%d\n",
s.locked, s.uptodate, s.to_read, s.to_write,
s.failed, s.failed_num);
@@ -2165,7 +2165,7 @@ static void handle_stripe5(struct stripe_head *sh)
md_sync_acct(rdev->bdev, STRIPE_SECTORS);

bi->bi_bdev = rdev->bdev;
- PRINTK("for %llu schedule op %ld on disc %d\n",
+ pr_debug("for %llu schedule op %ld on disc %d\n",
(unsigned long long)sh->sector, bi->bi_rw, i);
atomic_inc(&sh->count);
bi->bi_sector = sh->sector + rdev->data_offset;
@@ -2185,7 +2185,7 @@ static void handle_stripe5(struct stripe_head *sh)
} else {
if (rw == WRITE)
set_bit(STRIPE_DEGRADED, &sh->state);
- PRINTK("skip op %ld on disc %d for sector %llu\n",
+ pr_debug("skip op %ld on disc %d for sector %llu\n",
bi->bi_rw, i, (unsigned long long)sh->sector);
clear_bit(R5_LOCKED, &sh->dev[i].flags);
set_bit(STRIPE_HANDLE, &sh->state);
@@ -2205,7 +2205,7 @@ static void handle_stripe6(struct stripe_head *sh, struct page *tmp_page)
struct r5dev *dev, *pdev, *qdev;

r6s.qd_idx = raid6_next_disk(pd_idx, disks);
- PRINTK("handling stripe %llu, state=%#lx cnt=%d, "
+ pr_debug("handling stripe %llu, state=%#lx cnt=%d, "
"pd_idx=%d, qd_idx=%d\n",
(unsigned long long)sh->sector, sh->state,
atomic_read(&sh->count), pd_idx, r6s.qd_idx);
@@ -2226,12 +2226,12 @@ static void handle_stripe6(struct stripe_head *sh, struct page *tmp_page)
dev = &sh->dev[i];
clear_bit(R5_Insync, &dev->flags);

- PRINTK("check %d: state 0x%lx read %p write %p written %p\n",
+ pr_debug("check %d: state 0x%lx read %p write %p written %p\n",
i, dev->flags, dev->toread, dev->towrite, dev->written);
/* maybe we can reply to a read */
if (test_bit(R5_UPTODATE, &dev->flags) && dev->toread) {
struct bio *rbi, *rbi2;
- PRINTK("Return read for disc %d\n", i);
+ pr_debug("Return read for disc %d\n", i);
spin_lock_irq(&conf->device_lock);
rbi = dev->toread;
dev->toread = NULL;
@@ -2280,7 +2280,7 @@ static void handle_stripe6(struct stripe_head *sh, struct page *tmp_page)
set_bit(R5_Insync, &dev->flags);
}
rcu_read_unlock();
- PRINTK("locked=%d uptodate=%d to_read=%d"
+ pr_debug("locked=%d uptodate=%d to_read=%d"
" to_write=%d failed=%d failed_num=%d,%d\n",
s.locked, s.uptodate, s.to_read, s.to_write, s.failed,
r6s.failed_num[0], r6s.failed_num[1]);
@@ -2428,7 +2428,7 @@ static void handle_stripe6(struct stripe_head *sh, struct page *tmp_page)
md_sync_acct(rdev->bdev, STRIPE_SECTORS);

bi->bi_bdev = rdev->bdev;
- PRINTK("for %llu schedule op %ld on disc %d\n",
+ pr_debug("for %llu schedule op %ld on disc %d\n",
(unsigned long long)sh->sector, bi->bi_rw, i);
atomic_inc(&sh->count);
bi->bi_sector = sh->sector + rdev->data_offset;
@@ -2448,7 +2448,7 @@ static void handle_stripe6(struct stripe_head *sh, struct page *tmp_page)
} else {
if (rw == WRITE)
set_bit(STRIPE_DEGRADED, &sh->state);
- PRINTK("skip op %ld on disc %d for sector %llu\n",
+ pr_debug("skip op %ld on disc %d for sector %llu\n",
bi->bi_rw, i, (unsigned long long)sh->sector);
clear_bit(R5_LOCKED, &sh->dev[i].flags);
set_bit(STRIPE_HANDLE, &sh->state);
@@ -2692,7 +2692,7 @@ static int raid5_align_endio(struct bio *bi, unsigned int bytes, int error)
}


- PRINTK("raid5_align_endio : io error...handing IO for a retry\n");
+ pr_debug("raid5_align_endio : io error...handing IO for a retry\n");

add_bio_to_retry(raid_bi, conf);
return 0;
@@ -2730,7 +2730,7 @@ static int chunk_aligned_read(request_queue_t *q, struct bio * raid_bio)
mdk_rdev_t *rdev;

if (!in_chunk_boundary(mddev, raid_bio)) {
- PRINTK("chunk_aligned_read : non aligned\n");
+ pr_debug("chunk_aligned_read : non aligned\n");
return 0;
}
/*
@@ -2854,7 +2854,7 @@ static int make_request(request_queue_t *q, struct bio * bi)

new_sector = raid5_compute_sector(logical_sector, disks, data_disks,
&dd_idx, &pd_idx, conf);
- PRINTK("raid5: make_request, sector %llu logical %llu\n",
+ pr_debug("raid5: make_request, sector %llu logical %llu\n",
(unsigned long long)new_sector,
(unsigned long long)logical_sector);

@@ -3227,7 +3227,7 @@ static void raid5d (mddev_t *mddev)
raid5_conf_t *conf = mddev_to_conf(mddev);
int handled;

- PRINTK("+++ raid5d active\n");
+ pr_debug("+++ raid5d active\n");

md_check_recovery(mddev);

@@ -3279,13 +3279,13 @@ static void raid5d (mddev_t *mddev)

spin_lock_irq(&conf->device_lock);
}
- PRINTK("%d stripes handled\n", handled);
+ pr_debug("%d stripes handled\n", handled);

spin_unlock_irq(&conf->device_lock);

unplug_slaves(mddev);

- PRINTK("--- raid5d inactive\n");
+ pr_debug("--- raid5d inactive\n");
}

static ssize_t
@@ -3461,7 +3461,7 @@ static int run(mddev_t *mddev)
atomic_set(&conf->preread_active_stripes, 0);
atomic_set(&conf->active_aligned_reads, 0);

- PRINTK("raid5: run(%s) called.\n", mdname(mddev));
+ pr_debug("raid5: run(%s) called.\n", mdname(mddev));

ITERATE_RDEV(mddev,rdev,tmp) {
raid_disk = rdev->raid_disk;
@@ -3644,7 +3644,7 @@ static int stop(mddev_t *mddev)
return 0;
}

-#if RAID5_DEBUG
+#ifdef DEBUG
static void print_sh (struct seq_file *seq, struct stripe_head *sh)
{
int i;
@@ -3691,7 +3691,7 @@ static void status (struct seq_file *seq, mddev_t *mddev)
conf->disks[i].rdev &&
test_bit(In_sync, &conf->disks[i].rdev->flags) ? "U" : "_");
seq_printf (seq, "]");
-#if RAID5_DEBUG
+#ifdef DEBUG
seq_printf (seq, "\n");
printall(seq, conf);
#endif
-
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