From: Hans Holmberg <hans.holmberg@xxxxxxxxxxxx>
Add trace events for tracking pblk state changes.
Signed-off-by: Hans Holmberg <hans.holmberg@xxxxxxxxxxxx>
---
drivers/lightnvm/pblk-core.c | 3 +++
drivers/lightnvm/pblk-init.c | 1 +
drivers/lightnvm/pblk-trace.h | 28 ++++++++++++++++++++++++++++
3 files changed, 32 insertions(+)
diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
index 05775a279b20..566a5d3165ee 100644
--- a/drivers/lightnvm/pblk-core.c
+++ b/drivers/lightnvm/pblk-core.c
@@ -1503,6 +1503,7 @@ static void pblk_stop_writes(struct pblk *pblk, struct pblk_line *line)
pblk_set_space_limit(pblk);
pblk->state = PBLK_STATE_STOPPING;
+ trace_pblk_state(pblk_disk_name(pblk), pblk->state);
}
static void pblk_line_close_meta_sync(struct pblk *pblk)
@@ -1552,6 +1553,7 @@ void __pblk_pipeline_flush(struct pblk *pblk)
return;
}
pblk->state = PBLK_STATE_RECOVERING;
+ trace_pblk_state(pblk_disk_name(pblk), pblk->state);
spin_unlock(&l_mg->free_lock);
pblk_flush_writer(pblk);
@@ -1573,6 +1575,7 @@ void __pblk_pipeline_stop(struct pblk *pblk)
spin_lock(&l_mg->free_lock);
pblk->state = PBLK_STATE_STOPPED;
+ trace_pblk_state(pblk_disk_name(pblk), pblk->state);
l_mg->data_line = NULL;
l_mg->data_next = NULL;
spin_unlock(&l_mg->free_lock);
diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c
index ddbd91d80119..d0546213c64f 100644
--- a/drivers/lightnvm/pblk-init.c
+++ b/drivers/lightnvm/pblk-init.c
@@ -1093,6 +1093,7 @@ static void *pblk_init(struct nvm_tgt_dev *dev, struct gendisk *tdisk,
pblk->dev = dev;
pblk->disk = tdisk;
pblk->state = PBLK_STATE_RUNNING;
+ trace_pblk_state(pblk_disk_name(pblk), pblk->state);
pblk->gc.gc_enabled = 0;
if (!(geo->version == NVM_OCSSD_SPEC_12 ||
diff --git a/drivers/lightnvm/pblk-trace.h b/drivers/lightnvm/pblk-trace.h
index f9aa9e25e428..c171d0450c07 100644
--- a/drivers/lightnvm/pblk-trace.h
+++ b/drivers/lightnvm/pblk-trace.h
@@ -25,6 +25,13 @@ struct ppa_addr;
{ PBLK_LINESTATE_CORRUPT, "CORRUPT" })
+#define show_pblk_state(state) __print_symbolic(state, \
+ { PBLK_STATE_RUNNING, "RUNNING", }, \
+ { PBLK_STATE_STOPPING, "STOPPING", }, \
+ { PBLK_STATE_RECOVERING, "RECOVERING", }, \
+ { PBLK_STATE_STOPPED, "STOPPED" })
+
+
TRACE_EVENT(pblk_chunk_state,
TP_PROTO(const char *name, struct ppa_addr *ppa, int state),
@@ -75,6 +82,27 @@ TRACE_EVENT(pblk_line_state,
);
+TRACE_EVENT(pblk_state,
+
+ TP_PROTO(const char *name, int state),
+
+ TP_ARGS(name, state),
+
+ TP_STRUCT__entry(
+ __string(name, name)
+ __field(int, state);
+ ),
+
+ TP_fast_assign(
+ __assign_str(name, name);
+ __entry->state = state;
+ ),
+
+ TP_printk("dev=%s state=%s", __get_str(name),
+ show_pblk_state((int)__entry->state))
+
+);
+
#endif /* !defined(_TRACE_PBLK_H) || defined(TRACE_HEADER_MULTI_READ) */
/* This part must be outside protection */
--
2.7.4
