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| author | Hans Holmberg <hans.holmberg@cnexlabs.com> | 2018-10-09 13:11:54 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-10-09 16:25:07 +0200 |
| commit | 1b0dd0bf3dc8e9fb974d61139c182be15e43caf9 (patch) | |
| tree | e50053b339986748faa9ca738f295ea40cfc6494 /drivers/lightnvm | |
| parent | lightnvm: pblk: add trace events for line state changes (diff) | |
| download | linux-1b0dd0bf3dc8e9fb974d61139c182be15e43caf9.tar.xz linux-1b0dd0bf3dc8e9fb974d61139c182be15e43caf9.zip | |
lightnvm: pblk: add trace events for pblk state changes
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>
Diffstat (limited to 'drivers/lightnvm')
| -rw-r--r-- | drivers/lightnvm/pblk-core.c | 3 | ||||
| -rw-r--r-- | drivers/lightnvm/pblk-init.c | 1 | ||||
| -rw-r--r-- | drivers/lightnvm/pblk-trace.h | 28 |
3 files changed, 32 insertions, 0 deletions
diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c index ef52c1647f88..c482ef7dd4b5 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 fca37da16266..9aebdee8e4c9 100644 --- a/drivers/lightnvm/pblk-init.c +++ b/drivers/lightnvm/pblk-init.c @@ -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 || 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 */ |