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lightnvm: pblk: add trace events for pblk state changes

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Add trace events for tracking pblk state changes.

Signed-off-by: Hans Holmberg <hans.holmberg@cnexlabs.com>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Hans Holmberg 2018-10-09 13:11:54 +02:00 committed by Jens Axboe
parent f29372322e
commit 1b0dd0bf3d
3 changed files with 32 additions and 0 deletions
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3
drivers/lightnvm/pblk-core.c
View File

@ -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);

1
drivers/lightnvm/pblk-init.c
View File

@ -1109,6 +1109,7 @@ 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 ||

28
drivers/lightnvm/pblk-trace.h
View File

@ -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 */