diff options
Diffstat (limited to 'sys/kern/subr_devstat.c')
| -rw-r--r-- | sys/kern/subr_devstat.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/sys/kern/subr_devstat.c b/sys/kern/subr_devstat.c index 7277dd1..4356020 100644 --- a/sys/kern/subr_devstat.c +++ b/sys/kern/subr_devstat.c @@ -80,8 +80,14 @@ devstat_new_entry(const void *dev_name, ds = devstat_alloc(); mtx_lock(&devstat_mutex); - devstat_add_entry(ds, dev_name, unit_number, block_size, - flags, device_type, priority); + if (unit_number == -1) { + ds->id = dev_name; + binuptime(&ds->creation_time); + devstat_generation++; + } else { + devstat_add_entry(ds, dev_name, unit_number, block_size, + flags, device_type, priority); + } mtx_unlock(&devstat_mutex); return (ds); } @@ -186,8 +192,10 @@ devstat_remove_entry(struct devstat *ds) /* Remove this entry from the devstat queue */ atomic_add_acq_int(&ds->sequence1, 1); - devstat_num_devs--; - STAILQ_REMOVE(devstat_head, ds, devstat, dev_links); + if (ds->id == NULL) { + devstat_num_devs--; + STAILQ_REMOVE(devstat_head, ds, devstat, dev_links); + } devstat_free(ds); devstat_generation++; mtx_unlock(&devstat_mutex); |
