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lightnvm: pblk: add trace events for line state changes 

Add trace events for logging for line 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 13:11:53 +02:00 committed by Jens Axboe
parent 4c44abf43d
commit f29372322e
5 changed files with 68 additions and 1 deletions
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19
drivers/lightnvm/pblk-core.c
View File

@ -413,6 +413,9 @@ struct list_head *pblk_line_gc_list(struct pblk *pblk, struct pblk_line *line)
}
} else {
line->state = PBLK_LINESTATE_CORRUPT;
trace_pblk_line_state(pblk_disk_name(pblk), line->id,
line->state);
line->gc_group = PBLK_LINEGC_NONE;
move_list = &l_mg->corrupt_list;
pblk_err(pblk, "corrupted vsc for line %d, vsc:%d (%d/%d/%d)\n",
@ -1019,6 +1022,8 @@ static int pblk_line_init_metadata(struct pblk *pblk, struct pblk_line *line,
spin_lock(&l_mg->free_lock);
spin_lock(&line->lock);
line->state = PBLK_LINESTATE_BAD;
trace_pblk_line_state(pblk_disk_name(pblk), line->id,
line->state);
spin_unlock(&line->lock);
list_add_tail(&line->list, &l_mg->bad_list);
@ -1166,6 +1171,8 @@ static int pblk_line_init_bb(struct pblk *pblk, struct pblk_line *line,
bitmap_weight(line->invalid_bitmap, lm->sec_per_line)) {
spin_lock(&line->lock);
line->state = PBLK_LINESTATE_BAD;
trace_pblk_line_state(pblk_disk_name(pblk), line->id,
line->state);
spin_unlock(&line->lock);
list_add_tail(&line->list, &l_mg->bad_list);
@ -1218,6 +1225,8 @@ static int pblk_line_prepare(struct pblk *pblk, struct pblk_line *line)
if (line->state == PBLK_LINESTATE_NEW) {
blk_to_erase = pblk_prepare_new_line(pblk, line);
line->state = PBLK_LINESTATE_FREE;
trace_pblk_line_state(pblk_disk_name(pblk), line->id,
line->state);
} else {
blk_to_erase = blk_in_line;
}
@ -1235,6 +1244,8 @@ static int pblk_line_prepare(struct pblk *pblk, struct pblk_line *line)
}
line->state = PBLK_LINESTATE_OPEN;
trace_pblk_line_state(pblk_disk_name(pblk), line->id,
line->state);
atomic_set(&line->left_eblks, blk_to_erase);
atomic_set(&line->left_seblks, blk_to_erase);
@ -1331,6 +1342,8 @@ struct pblk_line *pblk_line_get(struct pblk *pblk)
if (unlikely(bit >= lm->blk_per_line)) {
spin_lock(&line->lock);
line->state = PBLK_LINESTATE_BAD;
trace_pblk_line_state(pblk_disk_name(pblk), line->id,
line->state);
spin_unlock(&line->lock);
list_add_tail(&line->list, &l_mg->bad_list);
@ -1650,6 +1663,8 @@ static void __pblk_line_put(struct pblk *pblk, struct pblk_line *line)
spin_lock(&line->lock);
WARN_ON(line->state != PBLK_LINESTATE_GC);
line->state = PBLK_LINESTATE_FREE;
trace_pblk_line_state(pblk_disk_name(pblk), line->id,
line->state);
line->gc_group = PBLK_LINEGC_NONE;
pblk_line_free(line);
@ -1779,7 +1794,6 @@ void pblk_line_close(struct pblk *pblk, struct pblk_line *line)
WARN_ON(line->state != PBLK_LINESTATE_OPEN);
line->state = PBLK_LINESTATE_CLOSED;
move_list = pblk_line_gc_list(pblk, line);
list_add_tail(&line->list, move_list);
mempool_free(line->map_bitmap, l_mg->bitmap_pool);
@ -1798,6 +1812,9 @@ void pblk_line_close(struct pblk *pblk, struct pblk_line *line)
spin_unlock(&line->lock);
spin_unlock(&l_mg->gc_lock);
trace_pblk_line_state(pblk_disk_name(pblk), line->id,
line->state);
}
void pblk_line_close_meta(struct pblk *pblk, struct pblk_line *line)

8
drivers/lightnvm/pblk-gc.c
View File

@ -16,8 +16,10 @@
*/
#include "pblk.h"
#include "pblk-trace.h"
#include <linux/delay.h>
static void pblk_gc_free_gc_rq(struct pblk_gc_rq *gc_rq)
{
if (gc_rq->data)
@ -64,6 +66,8 @@ static void pblk_put_line_back(struct pblk *pblk, struct pblk_line *line)
spin_lock(&line->lock);
WARN_ON(line->state != PBLK_LINESTATE_GC);
line->state = PBLK_LINESTATE_CLOSED;
trace_pblk_line_state(pblk_disk_name(pblk), line->id,
line->state);
move_list = pblk_line_gc_list(pblk, line);
spin_unlock(&line->lock);
@ -405,6 +409,8 @@ void pblk_gc_free_full_lines(struct pblk *pblk)
spin_lock(&line->lock);
WARN_ON(line->state != PBLK_LINESTATE_CLOSED);
line->state = PBLK_LINESTATE_GC;
trace_pblk_line_state(pblk_disk_name(pblk), line->id,
line->state);
spin_unlock(&line->lock);
list_del(&line->list);
@ -451,6 +457,8 @@ static void pblk_gc_run(struct pblk *pblk)
spin_lock(&line->lock);
WARN_ON(line->state != PBLK_LINESTATE_CLOSED);
line->state = PBLK_LINESTATE_GC;
trace_pblk_line_state(pblk_disk_name(pblk), line->id,
line->state);
spin_unlock(&line->lock);
list_del(&line->list);

3
drivers/lightnvm/pblk-init.c
View File

@ -985,6 +985,9 @@ static int pblk_lines_init(struct pblk *pblk)
goto fail_free_lines;
nr_free_chks += pblk_setup_line_meta(pblk, line, chunk_meta, i);
trace_pblk_line_state(pblk_disk_name(pblk), line->id,
line->state);
}
if (!nr_free_chks) {

6
drivers/lightnvm/pblk-recovery.c
View File

@ -15,6 +15,7 @@
*/
#include "pblk.h"
#include "pblk-trace.h"
int pblk_recov_check_emeta(struct pblk *pblk, struct line_emeta *emeta_buf)
{
@ -932,6 +933,8 @@ struct pblk_line *pblk_recov_l2p(struct pblk *pblk)
spin_lock(&line->lock);
line->state = PBLK_LINESTATE_CLOSED;
trace_pblk_line_state(pblk_disk_name(pblk), line->id,
line->state);
move_list = pblk_line_gc_list(pblk, line);
spin_unlock(&line->lock);
@ -947,6 +950,9 @@ struct pblk_line *pblk_recov_l2p(struct pblk *pblk)
if (open_lines > 1)
pblk_err(pblk, "failed to recover L2P\n");
trace_pblk_line_state(pblk_disk_name(pblk), line->id,
line->state);
open_lines++;
line->meta_line = meta_line;
data_line = line;

33
drivers/lightnvm/pblk-trace.h
View File

@ -15,6 +15,16 @@ struct ppa_addr;
{ NVM_CHK_ST_OPEN, "OPEN", }, \
{ NVM_CHK_ST_OFFLINE, "OFFLINE", })
#define show_line_state(state) __print_symbolic(state, \
{ PBLK_LINESTATE_NEW, "NEW", }, \
{ PBLK_LINESTATE_FREE, "FREE", }, \
{ PBLK_LINESTATE_OPEN, "OPEN", }, \
{ PBLK_LINESTATE_CLOSED, "CLOSED", }, \
{ PBLK_LINESTATE_GC, "GC", }, \
{ PBLK_LINESTATE_BAD, "BAD", }, \
{ PBLK_LINESTATE_CORRUPT, "CORRUPT" })
TRACE_EVENT(pblk_chunk_state,
TP_PROTO(const char *name, struct ppa_addr *ppa, int state),
@ -41,6 +51,29 @@ TRACE_EVENT(pblk_chunk_state,
);
TRACE_EVENT(pblk_line_state,
TP_PROTO(const char *name, int line, int state),
TP_ARGS(name, line, state),
TP_STRUCT__entry(
__string(name, name)
__field(int, line)
__field(int, state);
),
TP_fast_assign(
__assign_str(name, name);
__entry->line = line;
__entry->state = state;
),
TP_printk("dev=%s line=%d state=%s", __get_str(name),
(int)__entry->line,
show_line_state((int)__entry->state))
);
#endif /* !defined(_TRACE_PBLK_H) || defined(TRACE_HEADER_MULTI_READ) */