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authorChaitanya Kulkarni <chaitanya.kulkarni@wdc.com>2020-03-25 10:49:56 -0700
committerJens Axboe <axboe@kernel.dk>2020-03-27 13:39:10 -0600
commit766c3297d7e1584394d4af0cc8368e838124b023 (patch)
treeb50714b7f110177da21fb8ba3786f62b0ecc3c1c
parentc51d04199826824944ed563748c9542eea27c2d7 (diff)
downloadlinux-766c3297d7e1584394d4af0cc8368e838124b023.tar.bz2
null_blk: add trace in null_blk_zoned.c
With the help of previously added tracepoints we can now trace report-zones, zone-write and zone-mgmt ops in null_blk_zoned.c. Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
-rw-r--r--drivers/block/null_blk_zoned.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/block/null_blk_zoned.c b/drivers/block/null_blk_zoned.c
index ed34785dd64b..673618d8222a 100644
--- a/drivers/block/null_blk_zoned.c
+++ b/drivers/block/null_blk_zoned.c
@@ -2,6 +2,9 @@
#include <linux/vmalloc.h>
#include "null_blk.h"
+#define CREATE_TRACE_POINTS
+#include "null_blk_trace.h"
+
/* zone_size in MBs to sectors. */
#define ZONE_SIZE_SHIFT 11
@@ -80,6 +83,8 @@ int null_report_zones(struct gendisk *disk, sector_t sector,
return 0;
nr_zones = min(nr_zones, dev->nr_zones - first_zone);
+ trace_nullb_report_zones(nullb, nr_zones);
+
for (i = 0; i < nr_zones; i++) {
/*
* Stacked DM target drivers will remap the zone information by
@@ -148,6 +153,8 @@ static blk_status_t null_zone_write(struct nullb_cmd *cmd, sector_t sector,
/* Invalid zone condition */
return BLK_STS_IOERR;
}
+
+ trace_nullb_zone_op(cmd, zno, zone->cond);
return BLK_STS_OK;
}
@@ -155,7 +162,8 @@ static blk_status_t null_zone_mgmt(struct nullb_cmd *cmd, enum req_opf op,
sector_t sector)
{
struct nullb_device *dev = cmd->nq->dev;
- struct blk_zone *zone = &dev->zones[null_zone_no(dev, sector)];
+ unsigned int zone_no = null_zone_no(dev, sector);
+ struct blk_zone *zone = &dev->zones[zone_no];
size_t i;
switch (op) {
@@ -203,6 +211,8 @@ static blk_status_t null_zone_mgmt(struct nullb_cmd *cmd, enum req_opf op,
default:
return BLK_STS_NOTSUPP;
}
+
+ trace_nullb_zone_op(cmd, zone_no, zone->cond);
return BLK_STS_OK;
}