diff options
Diffstat (limited to 'drivers/s390/scsi/zfcp_dbf.c')
| -rw-r--r-- | drivers/s390/scsi/zfcp_dbf.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c index e7712eb13ee..5a4b1e9a8b5 100644 --- a/drivers/s390/scsi/zfcp_dbf.c +++ b/drivers/s390/scsi/zfcp_dbf.c @@ -521,9 +521,19 @@ static struct debug_view zfcp_hba_dbf_view = { }; static const char *zfcp_rec_dbf_tags[] = { + [ZFCP_REC_DBF_ID_THREAD] = "thread", }; static const char *zfcp_rec_dbf_ids[] = { + [1] = "new", + [2] = "ready", + [3] = "kill", + [4] = "down sleep", + [5] = "down wakeup", + [6] = "down sleep ecd", + [7] = "down wakeup ecd", + [8] = "down sleep epd", + [9] = "down wakeup epd", }; static int zfcp_rec_dbf_view_format(debug_info_t *id, struct debug_view *view, @@ -536,6 +546,12 @@ static int zfcp_rec_dbf_view_format(debug_info_t *id, struct debug_view *view, zfcp_dbf_outs(&p, "hint", zfcp_rec_dbf_ids[r->id2]); zfcp_dbf_out(&p, "id", "%d", r->id2); switch (r->id) { + case ZFCP_REC_DBF_ID_THREAD: + zfcp_dbf_out(&p, "sema", "%d", r->u.thread.sema); + zfcp_dbf_out(&p, "total", "%d", r->u.thread.total); + zfcp_dbf_out(&p, "ready", "%d", r->u.thread.ready); + zfcp_dbf_out(&p, "running", "%d", r->u.thread.running); + break; } sprintf(p, "\n"); return (p - buf) + 1; @@ -550,6 +566,41 @@ static struct debug_view zfcp_rec_dbf_view = { NULL }; +/** + * zfcp_rec_dbf_event_thread - trace event related to recovery thread operation + * @id2: identifier for event + * @adapter: adapter + * @lock: non-zero value indicates that erp_lock has not yet been acquired + */ +void zfcp_rec_dbf_event_thread(u8 id2, struct zfcp_adapter *adapter, int lock) +{ + struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf; + unsigned long flags = 0; + struct list_head *entry; + unsigned ready = 0, running = 0, total; + + if (lock) + read_lock_irqsave(&adapter->erp_lock, flags); + list_for_each(entry, &adapter->erp_ready_head) + ready++; + list_for_each(entry, &adapter->erp_running_head) + running++; + total = adapter->erp_total_count; + if (lock) + read_unlock_irqrestore(&adapter->erp_lock, flags); + + spin_lock_irqsave(&adapter->rec_dbf_lock, flags); + memset(r, 0, sizeof(*r)); + r->id = ZFCP_REC_DBF_ID_THREAD; + r->id2 = id2; + r->u.thread.sema = atomic_read(&adapter->erp_ready_sem.count); + r->u.thread.total = total; + r->u.thread.ready = ready; + r->u.thread.running = running; + debug_event(adapter->rec_dbf, 5, r, sizeof(*r)); + spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags); +} + static void _zfcp_san_dbf_event_common_ct(const char *tag, struct zfcp_fsf_req *fsf_req, u32 s_id, u32 d_id, void *buffer, int buflen) |