diff options
| author | Michał Mirosław <mirq-linux@rere.qmqm.pl> | 2018-10-09 22:13:43 +0200 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2018-10-18 12:17:17 -0400 |
| commit | ed0302e83098db9b3a8c27f36c93deeafd6963d8 (patch) | |
| tree | 02b60bc463ddeacfbc9e004db986e48205f1ba3c /drivers/md | |
| parent | f349b0a3e1f0d184374936f1b2a49352f8a4b1c8 (diff) | |
| download | linux-ed0302e83098db9b3a8c27f36c93deeafd6963d8.tar.bz2 | |
dm crypt: make workqueue names device-specific
Make cpu-usage debugging easier by naming workqueues per device.
Example ps output:
root 413 0.0 0.0 0 0 ? I< paź02 0:00 [kcryptd_io/253:0]
root 414 0.0 0.0 0 0 ? I< paź02 0:00 [kcryptd/253:0]
root 415 0.0 0.0 0 0 ? S paź02 1:10 [dmcrypt_write/253:0]
root 465 0.0 0.0 0 0 ? I< paź02 0:00 [kcryptd_io/253:2]
root 466 0.0 0.0 0 0 ? I< paź02 0:00 [kcryptd/253:2]
root 467 0.0 0.0 0 0 ? S paź02 2:06 [dmcrypt_write/253:2]
root 15359 0.2 0.0 0 0 ? I< 19:43 0:25 [kworker/u17:8-kcryptd/253:0]
root 16563 0.2 0.0 0 0 ? I< 20:10 0:18 [kworker/u17:0-kcryptd/253:2]
root 23205 0.1 0.0 0 0 ? I< 21:21 0:04 [kworker/u17:4-kcryptd/253:0]
root 13383 0.1 0.0 0 0 ? I< 21:32 0:02 [kworker/u17:2-kcryptd/253:2]
root 2610 0.1 0.0 0 0 ? I< 21:42 0:01 [kworker/u17:12-kcryptd/253:2]
root 20124 0.1 0.0 0 0 ? I< 21:56 0:01 [kworker/u17:1-kcryptd/253:2]
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm-crypt.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index 0481223b1deb..b8eec515a003 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -2661,6 +2661,7 @@ static int crypt_ctr_optional(struct dm_target *ti, unsigned int argc, char **ar static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv) { struct crypt_config *cc; + const char *devname = dm_table_device_name(ti->table); int key_size; unsigned int align_mask; unsigned long long tmpll; @@ -2806,18 +2807,22 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv) } ret = -ENOMEM; - cc->io_queue = alloc_workqueue("kcryptd_io", WQ_HIGHPRI | WQ_CPU_INTENSIVE | WQ_MEM_RECLAIM, 1); + cc->io_queue = alloc_workqueue("kcryptd_io/%s", + WQ_HIGHPRI | WQ_CPU_INTENSIVE | WQ_MEM_RECLAIM, + 1, devname); if (!cc->io_queue) { ti->error = "Couldn't create kcryptd io queue"; goto bad; } if (test_bit(DM_CRYPT_SAME_CPU, &cc->flags)) - cc->crypt_queue = alloc_workqueue("kcryptd", WQ_HIGHPRI | WQ_CPU_INTENSIVE | WQ_MEM_RECLAIM, 1); + cc->crypt_queue = alloc_workqueue("kcryptd/%s", + WQ_HIGHPRI | WQ_CPU_INTENSIVE | WQ_MEM_RECLAIM, + 1, devname); else - cc->crypt_queue = alloc_workqueue("kcryptd", + cc->crypt_queue = alloc_workqueue("kcryptd/%s", WQ_HIGHPRI | WQ_CPU_INTENSIVE | WQ_MEM_RECLAIM | WQ_UNBOUND, - num_online_cpus()); + num_online_cpus(), devname); if (!cc->crypt_queue) { ti->error = "Couldn't create kcryptd queue"; goto bad; @@ -2826,7 +2831,7 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv) spin_lock_init(&cc->write_thread_lock); cc->write_tree = RB_ROOT; - cc->write_thread = kthread_create(dmcrypt_write, cc, "dmcrypt_write"); + cc->write_thread = kthread_create(dmcrypt_write, cc, "dmcrypt_write/%s", devname); if (IS_ERR(cc->write_thread)) { ret = PTR_ERR(cc->write_thread); cc->write_thread = NULL; |