forked from Minki/linux
aoe: add AoE-target files to debugfs
Signed-off-by: Ed Cashin <ecashin@coraid.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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190519cd30
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@ -169,6 +169,7 @@ struct aoedev {
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ulong ref;
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struct work_struct work;/* disk create work struct */
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struct gendisk *gd;
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struct dentry *debugfs;
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struct request_queue *blkq;
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struct hd_geometry geo;
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sector_t ssize;
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@ -206,6 +207,7 @@ struct ktstate {
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int aoeblk_init(void);
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void aoeblk_exit(void);
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void aoeblk_gdalloc(void *);
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void aoedisk_rm_debugfs(struct aoedev *d);
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void aoedisk_rm_sysfs(struct aoedev *d);
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int aoechr_init(void);
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@ -132,6 +132,40 @@ static const struct attribute_group attr_group = {
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.attrs = aoe_attrs,
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};
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static const struct file_operations aoe_debugfs_fops;
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static void
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aoedisk_add_debugfs(struct aoedev *d)
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{
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struct dentry *entry;
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char *p;
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if (aoe_debugfs_dir == NULL)
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return;
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p = strchr(d->gd->disk_name, '/');
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if (p == NULL)
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p = d->gd->disk_name;
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else
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p++;
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BUG_ON(*p == '\0');
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entry = debugfs_create_file(p, 0444, aoe_debugfs_dir, d,
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&aoe_debugfs_fops);
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if (IS_ERR_OR_NULL(entry)) {
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pr_info("aoe: cannot create debugfs file for %s\n",
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d->gd->disk_name);
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return;
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}
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BUG_ON(d->debugfs);
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d->debugfs = entry;
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}
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void
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aoedisk_rm_debugfs(struct aoedev *d)
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{
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BUG_ON(d->debugfs == NULL);
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debugfs_remove(d->debugfs);
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d->debugfs = NULL;
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}
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static int
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aoedisk_add_sysfs(struct aoedev *d)
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{
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@ -332,6 +366,7 @@ aoeblk_gdalloc(void *vp)
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add_disk(gd);
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aoedisk_add_sysfs(d);
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aoedisk_add_debugfs(d);
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spin_lock_irqsave(&d->lock, flags);
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WARN_ON(!(d->flags & DEVFL_GD_NOW));
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@ -278,6 +278,7 @@ freedev(struct aoedev *d)
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del_timer_sync(&d->timer);
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if (d->gd) {
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aoedisk_rm_debugfs(d);
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aoedisk_rm_sysfs(d);
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del_gendisk(d->gd);
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put_disk(d->gd);
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