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Date: Thu, 6 Oct 2016 11:33:03 +0200
From: SF Markus Elfring <elfring@...rs.sourceforge.net>
To: linux-raid@...r.kernel.org, Christoph Hellwig <hch@....de>,
Guoqing Jiang <gqjiang@...e.com>, Jens Axboe <axboe@...com>,
Mike Christie <mchristi@...hat.com>,
Neil Brown <neilb@...e.com>, Shaohua Li <shli@...nel.org>,
Tomasz Majchrzak <tomasz.majchrzak@...el.com>
Cc: LKML <linux-kernel@...r.kernel.org>,
kernel-janitors@...r.kernel.org,
Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH 33/54] md/raid5: Replace printk() calls by the usage of higher
level interfaces
From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 5 Oct 2016 13:40:03 +0200
1. Add a definition for the macros "MY_LOG_PREFIX" and "pr_fmt"
so that their information can be used for consistent message output.
2. Prefer usage of some higher level macros over calling "printk" directly
in this software module.
Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
drivers/md/raid5.c | 215 ++++++++++++++++++++++++-----------------------------
1 file changed, 96 insertions(+), 119 deletions(-)
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index f2473fa0..b0a14a6 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -43,6 +43,8 @@
* miss any bits.
*/
+#define MY_LOG_PREFIX KBUILD_MODNAME ": "
+#define pr_fmt(fmt) MY_LOG_PREFIX fmt
#include <linux/blkdev.h>
#include <linux/kthread.h>
#include <linux/raid/pq.h>
@@ -540,7 +542,7 @@ static void init_stripe(struct stripe_head *sh, sector_t sector, int previous)
if (dev->toread || dev->read || dev->towrite || dev->written ||
test_bit(R5_LOCKED, &dev->flags)) {
- printk(KERN_ERR "sector=%llx i=%d %p %p %p %p %d\n",
+ pr_err("sector=%llx i=%d %p %p %p %p %d\n",
(unsigned long long)sh->sector, i, dev->toread,
dev->read, dev->towrite, dev->written,
test_bit(R5_LOCKED, &dev->flags));
@@ -2346,13 +2348,12 @@ static void raid5_end_read_request(struct bio * bi)
* replacement device. We just fail those on
* any error
*/
- printk_ratelimited(
- KERN_INFO
- "md/raid:%s: read error corrected"
- " (%lu sectors at %llu on %s)\n",
- mdname(conf->mddev), STRIPE_SECTORS,
- (unsigned long long)s,
- bdevname(rdev->bdev, b));
+ pr_info_ratelimited("%s: read error corrected ("
+ "%lu sectors at %llu on %s)\n",
+ mdname(conf->mddev),
+ STRIPE_SECTORS,
+ (unsigned long long)s,
+ bdevname(rdev->bdev, b));
atomic_add(STRIPE_SECTORS, &rdev->corrected_errors);
clear_bit(R5_ReadError, &sh->dev[i].flags);
clear_bit(R5_ReWrite, &sh->dev[i].flags);
@@ -2369,37 +2370,27 @@ static void raid5_end_read_request(struct bio * bi)
clear_bit(R5_UPTODATE, &sh->dev[i].flags);
atomic_inc(&rdev->read_errors);
if (test_bit(R5_ReadRepl, &sh->dev[i].flags))
- printk_ratelimited(
- KERN_WARNING
- "md/raid:%s: read error on replacement device "
- "(sector %llu on %s).\n",
- mdname(conf->mddev),
- (unsigned long long)s,
- bdn);
+ pr_warn_ratelimited("%s: read error on replacement device (sector %llu on %s).\n",
+ mdname(conf->mddev),
+ (unsigned long long)s,
+ bdn);
else if (conf->mddev->degraded >= conf->max_degraded) {
set_bad = 1;
- printk_ratelimited(
- KERN_WARNING
- "md/raid:%s: read error not correctable "
- "(sector %llu on %s).\n",
- mdname(conf->mddev),
- (unsigned long long)s,
- bdn);
+ pr_warn_ratelimited("%s: read error not correctable (sector %llu on %s).\n",
+ mdname(conf->mddev),
+ (unsigned long long)s,
+ bdn);
} else if (test_bit(R5_ReWrite, &sh->dev[i].flags)) {
/* Oh, no!!! */
set_bad = 1;
- printk_ratelimited(
- KERN_WARNING
- "md/raid:%s: read error NOT corrected!! "
- "(sector %llu on %s).\n",
- mdname(conf->mddev),
- (unsigned long long)s,
- bdn);
+ pr_warn_ratelimited("%s: read error NOT corrected! (sector %llu on %s).\n",
+ mdname(conf->mddev),
+ (unsigned long long)s,
+ bdn);
} else if (atomic_read(&rdev->read_errors)
> conf->max_nr_stripes)
- printk(KERN_WARNING
- "md/raid:%s: Too many read errors, failing device %s.\n",
- mdname(conf->mddev), bdn);
+ pr_warn("%s: Too many read errors, failing device %s.\n",
+ mdname(conf->mddev), bdn);
else
retry = 1;
if (set_bad && test_bit(In_sync, &rdev->flags)
@@ -2532,13 +2523,12 @@ static void raid5_error(struct mddev *mddev, struct md_rdev *rdev)
set_bit(Faulty, &rdev->flags);
set_mask_bits(&mddev->flags, 0,
BIT(MD_CHANGE_DEVS) | BIT(MD_CHANGE_PENDING));
- printk(KERN_ALERT
- "md/raid:%s: Disk failure on %s, disabling device.\n"
- "md/raid:%s: Operation continuing on %d devices.\n",
- mdname(mddev),
- bdevname(rdev->bdev, b),
- mdname(mddev),
- conf->raid_disks - mddev->degraded);
+ pr_alert("%s: Disk failure on %s, disabling device.\n"
+ MY_LOG_PREFIX "%s: Operation continuing on %d devices.\n",
+ mdname(mddev),
+ bdevname(rdev->bdev, b),
+ mdname(mddev),
+ conf->raid_disks - mddev->degraded);
}
/*
@@ -2860,7 +2850,7 @@ sector_t raid5_compute_blocknr(struct stripe_head *sh, int i, int previous)
previous, &dummy1, &sh2);
if (check != sh->sector || dummy1 != dd_idx || sh2.pd_idx != sh->pd_idx
|| sh2.qd_idx != sh->qd_idx) {
- printk(KERN_ERR "md/raid:%s: compute_blocknr: map not correct\n",
+ pr_err("%s: compute_blocknr: map not correct\n",
mdname(conf->mddev));
return 0;
}
@@ -3781,7 +3771,7 @@ static void handle_parity_checks5(struct r5conf *conf, struct stripe_head *sh,
case check_state_compute_run:
break;
default:
- printk(KERN_ERR "%s: unknown check_state: %d sector: %llu\n",
+ pr_err("%s: unknown check_state: %d sector: %llu\n",
__func__, sh->check_state,
(unsigned long long) sh->sector);
BUG();
@@ -3945,7 +3935,7 @@ static void handle_parity_checks6(struct r5conf *conf, struct stripe_head *sh,
case check_state_compute_run:
break;
default:
- printk(KERN_ERR "%s: unknown check_state: %d sector: %llu\n",
+ pr_err("%s: unknown check_state: %d sector: %llu\n",
__func__, sh->check_state,
(unsigned long long) sh->sector);
BUG();
@@ -6456,7 +6446,7 @@ static struct r5conf *setup_conf(struct mddev *mddev)
if (mddev->new_level != 5
&& mddev->new_level != 4
&& mddev->new_level != 6) {
- printk(KERN_ERR "md/raid:%s: raid level not set to 4/5/6 (%d)\n",
+ pr_err("%s: raid level not set to 4/5/6 (%d)\n",
mdname(mddev), mddev->new_level);
return ERR_PTR(-EIO);
}
@@ -6464,12 +6454,12 @@ static struct r5conf *setup_conf(struct mddev *mddev)
&& !algorithm_valid_raid5(mddev->new_layout)) ||
(mddev->new_level == 6
&& !algorithm_valid_raid6(mddev->new_layout))) {
- printk(KERN_ERR "md/raid:%s: layout %d not supported\n",
+ pr_err("%s: layout %d not supported\n",
mdname(mddev), mddev->new_layout);
return ERR_PTR(-EIO);
}
if (mddev->new_level == 6 && mddev->raid_disks < 4) {
- printk(KERN_ERR "md/raid:%s: not enough configured devices (%d, minimum 4)\n",
+ pr_err("%s: not enough configured devices (%d, minimum 4)\n",
mdname(mddev), mddev->raid_disks);
return ERR_PTR(-EINVAL);
}
@@ -6477,7 +6467,7 @@ static struct r5conf *setup_conf(struct mddev *mddev)
if (!mddev->new_chunk_sectors ||
(mddev->new_chunk_sectors << 9) % PAGE_SIZE ||
!is_power_of_2(mddev->new_chunk_sectors)) {
- printk(KERN_ERR "md/raid:%s: invalid chunk size %d\n",
+ pr_err("%s: invalid chunk size %d\n",
mdname(mddev), mddev->new_chunk_sectors << 9);
return ERR_PTR(-EINVAL);
}
@@ -6569,8 +6559,7 @@ static struct r5conf *setup_conf(struct mddev *mddev)
if (test_bit(In_sync, &rdev->flags)) {
char b[BDEVNAME_SIZE];
- printk(KERN_INFO "md/raid:%s: device %s operational as raid"
- " disk %d\n",
+ pr_info("%s: device %s operational as raid disk %d\n",
mdname(mddev), bdevname(rdev->bdev, b), raid_disk);
} else if (rdev->saved_raid_disk != raid_disk)
/* Cannot rely on bitmap to complete recovery */
@@ -6605,8 +6594,7 @@ static struct r5conf *setup_conf(struct mddev *mddev)
((mddev->new_chunk_sectors << 9) / STRIPE_SIZE) * 4);
conf->min_nr_stripes = max(NR_STRIPES, stripes);
if (conf->min_nr_stripes != NR_STRIPES)
- printk(KERN_INFO
- "md/raid:%s: force stripe size %d for reshape\n",
+ pr_info("%s: force stripe size %d for reshape\n",
mdname(mddev), conf->min_nr_stripes);
}
memory = conf->min_nr_stripes * (sizeof(struct stripe_head) +
@@ -6615,8 +6603,7 @@ static struct r5conf *setup_conf(struct mddev *mddev)
if (grow_stripes(conf, conf->min_nr_stripes))
goto free_conf;
else
- printk(KERN_INFO "md/raid:%s: allocated %dkB\n",
- mdname(mddev), memory);
+ pr_info("%s: allocated %dkB\n", mdname(mddev), memory);
/*
* Losing a stripe head costs more than the time to refill it,
* it reduces the queue depth and so can hurt throughput.
@@ -6628,9 +6615,7 @@ static struct r5conf *setup_conf(struct mddev *mddev)
conf->shrinker.batch = 128;
conf->shrinker.flags = 0;
if (register_shrinker(&conf->shrinker)) {
- printk(KERN_ERR
- "md/raid:%s: couldn't register shrinker.\n",
- mdname(mddev));
+ pr_err("%s: couldn't register shrinker.\n", mdname(mddev));
goto free_conf;
}
@@ -6684,9 +6669,8 @@ static int raid5_run(struct mddev *mddev)
int first = 1;
if (mddev->recovery_cp != MaxSector)
- printk(KERN_NOTICE "md/raid:%s: not clean"
- " -- starting background reconstruction\n",
- mdname(mddev));
+ pr_notice("%s: not clean - starting background reconstruction\n",
+ mdname(mddev));
rdev_for_each(rdev, mddev) {
long long diff;
@@ -6729,15 +6713,14 @@ static int raid5_run(struct mddev *mddev)
int new_data_disks;
if (journal_dev) {
- printk(KERN_ERR "md/raid:%s: don't support reshape with journal - aborting.\n",
- mdname(mddev));
+ pr_err("%s: don't support reshape with journal%s",
+ mdname(mddev), " - aborting.\n");
return -EINVAL;
}
if (mddev->new_level != mddev->level) {
- printk(KERN_ERR "md/raid:%s: unsupported reshape "
- "required - aborting.\n",
- mdname(mddev));
+ pr_err("%s: unsupported reshape required%s",
+ mdname(mddev), " - aborting.\n");
return -EINVAL;
}
old_disks = mddev->raid_disks - mddev->delta_disks;
@@ -6752,8 +6735,8 @@ static int raid5_run(struct mddev *mddev)
chunk_sectors = max(mddev->chunk_sectors, mddev->new_chunk_sectors);
new_data_disks = mddev->raid_disks - max_degraded;
if (sector_div(here_new, chunk_sectors * new_data_disks)) {
- printk(KERN_ERR "md/raid:%s: reshape_position not "
- "on a stripe boundary\n", mdname(mddev));
+ pr_err("%s: reshape_position not on a stripe boundary\n",
+ mdname(mddev));
return -EINVAL;
}
reshape_offset = here_new * chunk_sectors;
@@ -6774,10 +6757,8 @@ static int raid5_run(struct mddev *mddev)
abs(min_offset_diff) >= mddev->new_chunk_sectors)
/* not really in-place - so OK */;
else if (mddev->ro == 0) {
- printk(KERN_ERR "md/raid:%s: in-place reshape "
- "must be started in read-only mode "
- "- aborting\n",
- mdname(mddev));
+ pr_err("%s: in-place reshape must be started in read-only mode%s",
+ mdname(mddev), " - aborting.\n");
return -EINVAL;
}
} else if (mddev->reshape_backwards
@@ -6786,13 +6767,11 @@ static int raid5_run(struct mddev *mddev)
: (here_new * chunk_sectors >=
here_old * chunk_sectors + (-min_offset_diff))) {
/* Reading from the same stripe as writing to - bad */
- printk(KERN_ERR "md/raid:%s: reshape_position too early for "
- "auto-recovery - aborting.\n",
- mdname(mddev));
+ pr_err("%s: reshape_position too early for auto-recovery%s",
+ mdname(mddev), " - aborting.\n");
return -EINVAL;
}
- printk(KERN_INFO "md/raid:%s: reshape will continue\n",
- mdname(mddev));
+ pr_info("%s: reshape will continue\n", mdname(mddev));
/* OK, we should be able to continue; */
} else {
BUG_ON(mddev->level != mddev->new_level);
@@ -6811,7 +6790,7 @@ static int raid5_run(struct mddev *mddev)
if (test_bit(MD_HAS_JOURNAL, &mddev->flags)) {
if (!journal_dev) {
- pr_err("md/raid:%s: journal disk is missing, force array readonly\n",
+ pr_err("%s: journal disk is missing, force array readonly\n",
mdname(mddev));
mddev->ro = 1;
set_disk_ro(mddev->gendisk, 1);
@@ -6839,8 +6818,7 @@ static int raid5_run(struct mddev *mddev)
if (conf->disks[i].replacement &&
conf->reshape_progress != MaxSector) {
/* replacements and reshape simply do not mix. */
- printk(KERN_ERR "md: cannot handle concurrent "
- "replacement and reshape.\n");
+ pr_err("cannot handle concurrent replacement and reshape.\n");
goto abort;
}
if (test_bit(In_sync, &rdev->flags)) {
@@ -6882,9 +6860,8 @@ static int raid5_run(struct mddev *mddev)
mddev->degraded = calc_degraded(conf);
if (has_failed(conf)) {
- printk(KERN_ERR "md/raid:%s: not enough operational devices"
- " (%d/%d failed)\n",
- mdname(mddev), mddev->degraded, conf->raid_disks);
+ pr_err("%s: not enough operational devices (%d/%d failed)\n",
+ mdname(mddev), mddev->degraded, conf->raid_disks);
goto abort;
}
@@ -6894,30 +6871,30 @@ static int raid5_run(struct mddev *mddev)
if (mddev->degraded > dirty_parity_disks &&
mddev->recovery_cp != MaxSector) {
- if (mddev->ok_start_degraded)
- printk(KERN_WARNING
- "md/raid:%s: starting dirty degraded array"
- " - data corruption possible.\n",
- mdname(mddev));
- else {
- printk(KERN_ERR
- "md/raid:%s: cannot start dirty degraded array.\n",
+ if (mddev->ok_start_degraded) {
+ pr_warn("%s: starting dirty degraded array - data corruption possible.\n",
+ mdname(mddev));
+ } else {
+ pr_err("%s: cannot start dirty degraded array.\n",
mdname(mddev));
goto abort;
}
}
if (mddev->degraded == 0)
- printk(KERN_INFO "md/raid:%s: raid level %d active with %d out of %d"
- " devices, algorithm %d\n", mdname(mddev), conf->level,
- mddev->raid_disks-mddev->degraded, mddev->raid_disks,
- mddev->new_layout);
+ pr_info("%s: raid level %d active with %d out of %d devices, algorithm %d\n",
+ mdname(mddev),
+ conf->level,
+ mddev->raid_disks-mddev->degraded,
+ mddev->raid_disks,
+ mddev->new_layout);
else
- printk(KERN_ALERT "md/raid:%s: raid level %d active with %d"
- " out of %d devices, algorithm %d\n",
- mdname(mddev), conf->level,
- mddev->raid_disks - mddev->degraded,
- mddev->raid_disks, mddev->new_layout);
+ pr_alert("%s: raid level %d active with %d out of %d devices, algorithm %d\n",
+ mdname(mddev),
+ conf->level,
+ mddev->raid_disks - mddev->degraded,
+ mddev->raid_disks,
+ mddev->new_layout);
print_raid5_conf(conf);
@@ -6937,9 +6914,8 @@ static int raid5_run(struct mddev *mddev)
mddev->to_remove = NULL;
else if (mddev->kobj.sd &&
sysfs_create_group(&mddev->kobj, &raid5_attrs_group))
- printk(KERN_WARNING
- "raid5: failed to create sysfs attributes for %s\n",
- mdname(mddev));
+ pr_warn("failed to create sysfs attributes for %s\n",
+ mdname(mddev));
md_set_array_sectors(mddev, raid5_size(mddev, 0, 0));
if (mddev->queue) {
@@ -7027,8 +7003,8 @@ static int raid5_run(struct mddev *mddev)
if (journal_dev) {
char b[BDEVNAME_SIZE];
- printk(KERN_INFO"md/raid:%s: using device %s as journal\n",
- mdname(mddev), bdevname(journal_dev->bdev, b));
+ pr_info("%s: using device %s as journal\n",
+ mdname(mddev), bdevname(journal_dev->bdev, b));
r5l_init_log(conf, journal_dev);
}
@@ -7038,7 +7014,7 @@ static int raid5_run(struct mddev *mddev)
print_raid5_conf(conf);
free_conf(conf);
mddev->private = NULL;
- printk(KERN_ALERT "md/raid:%s: failed to run raid set.\n", mdname(mddev));
+ pr_alert("%s: failed to run raid set.\n", mdname(mddev));
return -EIO;
}
@@ -7072,22 +7048,23 @@ static void print_raid5_conf (struct r5conf *conf)
int i;
struct disk_info *tmp;
- printk(KERN_DEBUG "RAID conf printout:\n");
+ pr_debug("conf printout:\n");
if (!conf) {
- printk("(conf==NULL)\n");
+ pr_debug("(conf==NULL)\n");
return;
}
- printk(KERN_DEBUG " --- level:%d rd:%d wd:%d\n", conf->level,
- conf->raid_disks,
- conf->raid_disks - conf->mddev->degraded);
+ pr_debug("--- level:%d rd:%d wd:%d\n",
+ conf->level,
+ conf->raid_disks,
+ conf->raid_disks - conf->mddev->degraded);
for (i = 0; i < conf->raid_disks; i++) {
char b[BDEVNAME_SIZE];
tmp = conf->disks + i;
if (tmp->rdev)
- printk(KERN_DEBUG " disk %d, o:%d, dev:%s\n",
- i, !test_bit(Faulty, &tmp->rdev->flags),
- bdevname(tmp->rdev->bdev, b));
+ pr_debug("disk %d, o:%d, dev:%s\n",
+ i, !test_bit(Faulty, &tmp->rdev->flags),
+ bdevname(tmp->rdev->bdev, b));
}
}
@@ -7233,8 +7210,8 @@ static int raid5_add_disk(struct mddev *mddev, struct md_rdev *rdev)
* write requests running. We should be safe
*/
r5l_init_log(conf, rdev);
- printk(KERN_INFO"md/raid:%s: using device %s as journal\n",
- mdname(mddev), bdevname(rdev->bdev, b));
+ pr_info("%s: using device %s as journal\n",
+ mdname(mddev), bdevname(rdev->bdev, b));
return 0;
}
if (mddev->recovery_disabled == conf->recovery_disabled)
@@ -7338,9 +7315,9 @@ static int check_stripe_cache(struct mddev *mddev)
> conf->min_nr_stripes ||
((mddev->new_chunk_sectors << 9) / STRIPE_SIZE) * 4
> conf->min_nr_stripes) {
- printk(KERN_WARNING "md/raid:%s: reshape: not enough stripes. Needed %lu\n",
- mdname(mddev),
- ((max(mddev->chunk_sectors, mddev->new_chunk_sectors) << 9)
+ pr_warn("%s: reshape: not enough stripes. Needed %lu\n",
+ mdname(mddev),
+ ((max(mddev->chunk_sectors, mddev->new_chunk_sectors) << 9)
/ STRIPE_SIZE)*4);
return 0;
}
@@ -7422,8 +7399,8 @@ static int raid5_start_reshape(struct mddev *mddev)
*/
if (raid5_size(mddev, 0, conf->raid_disks + mddev->delta_disks)
< mddev->array_sectors) {
- printk(KERN_ERR "md/raid:%s: array size must be reduced "
- "before number of disks\n", mdname(mddev));
+ pr_err("%s: array size must be reduced before number of disks\n",
+ mdname(mddev));
return -EINVAL;
}
@@ -7641,7 +7618,7 @@ static void *raid45_takeover_raid0(struct mddev *mddev, int level)
/* for raid0 takeover only one zone is supported */
if (raid0_conf->nr_strip_zones > 1) {
- printk(KERN_ERR "md/raid:%s: cannot takeover raid0 with more than one zone.\n",
+ pr_err("%s: cannot takeover raid0 with more than one zone.\n",
mdname(mddev));
return ERR_PTR(-EINVAL);
}
--
2.10.1
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