Insert sdev_dbg() calls in the function path which may queue
alua_rtpg_work() past initialization, for debugging purposes:
- alua_activate()
- alua_check_sense()
- alua_rtpg_queue()
Signed-off-by: Mauricio Faria de Oliveira <mauri...@linux.vnet.ibm.com>
---
drivers/scsi/device_handler/scsi_dh_alua.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c
b/drivers/scsi/device_handler/scsi_dh_alua.c
index e0bf0827a980..5bf0d55f6eb1 100644
--- a/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -422,6 +422,10 @@ static char print_alua_state(unsigned char state)
static int alua_check_sense(struct scsi_device *sdev,
struct scsi_sense_hdr *sense_hdr)
{
+ sdev_dbg(sdev, "%s: %s(): Sense Key: 0x%x, ASC: 0x%x, ASCQ: 0x%x\n",
+ ALUA_DH_NAME, __func__, sense_hdr->sense_key,
+ sense_hdr->asc, sense_hdr->ascq);
+
switch (sense_hdr->sense_key) {
case NOT_READY:
if (sense_hdr->asc == 0x04 && sense_hdr->ascq == 0x0a) {
@@ -987,10 +991,13 @@ static bool alua_rtpg_queue(struct alua_port_group *pg,
spin_unlock_irqrestore(&pg->lock, flags);
if (start_queue) {
+
if (queue_delayed_work(alua_wq, &pg->rtpg_work,
- msecs_to_jiffies(ALUA_RTPG_DELAY_MSECS)))
+ msecs_to_jiffies(ALUA_RTPG_DELAY_MSECS))) {
+ sdev_dbg(sdev, "%s: %s(): port group %02x\n",
+ ALUA_DH_NAME, __func__, pg->group_id);
sdev = NULL;
- else
+ } else
kref_put(&pg->kref, release_port_group);
}
if (sdev)
@@ -1100,6 +1107,9 @@ static int alua_activate(struct scsi_device *sdev,
rcu_read_unlock();
mutex_unlock(&h->init_mutex);
+ sdev_dbg(sdev, "%s: %s(): port group %02x, fn: %pf()\n",
+ ALUA_DH_NAME, __func__, pg->group_id, fn);
+
if (alua_rtpg_queue(pg, sdev, qdata, true))
fn = NULL;
else
--
1.8.3.1
