Commit f2937232 authored by Hans Holmberg's avatar Hans Holmberg Committed by Jens Axboe
Browse files

lightnvm: pblk: add trace events for line state changes 



Add trace events for logging for line state changes.

Signed-off-by: default avatarHans Holmberg <hans.holmberg@cnexlabs.com>
Signed-off-by: default avatarMatias Bjørling <mb@lightnvm.io>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 4c44abf4

drivers/lightnvm/pblk-core.c

+18 −1
Original line number Diff line number Diff line
@@ -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 @@ retry: 
	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)

drivers/lightnvm/pblk-gc.c

+8 −0
Original line number Diff line number Diff line
@@ -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 @@ next_gc_group: 
		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);

drivers/lightnvm/pblk-init.c

+3 −0
Original line number Diff line number Diff line
@@ -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) {

drivers/lightnvm/pblk-recovery.c

+6 −0
Original line number Diff line number Diff line
@@ -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 @@ next: 


			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 @@ next: 
			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;

drivers/lightnvm/pblk-trace.h

+33 −0
Original line number Diff line number Diff line
@@ -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) */

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