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nvme: trace bio completion

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When native multipathing is enabled we cannot enable blktrace for
the underlying paths, so any completion is never traced.

Signed-off-by: Hannes Reinecke <hare@suse.com>
[fixed-up by Mikhail for non-multipath-build]
Signed-off-by: Mikhail Skorzhinskii <mskorzhinskiy@solarflare.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
This commit is contained in:
Hannes Reinecke 2019-07-24 15:47:55 +02:00 committed by Sagi Grimberg
parent e01f91dff9
commit 35fe0d12c8
2 changed files with 21 additions and 3 deletions
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8
drivers/nvme/host/core.c
View file

@ -22,12 +22,12 @@
#include <linux/pm_qos.h>
#include <asm/unaligned.h>
#define CREATE_TRACE_POINTS
#include "trace.h"
#include "nvme.h"
#include "fabrics.h"
#define CREATE_TRACE_POINTS
#include "trace.h"
#define NVME_MINORS (1U << MINORBITS)
unsigned int admin_timeout = 60;
@ -279,6 +279,8 @@ void nvme_complete_rq(struct request *req)
return;
}
}
nvme_trace_bio_complete(req, status);
blk_mq_end_request(req, status);
}
EXPORT_SYMBOL_GPL(nvme_complete_rq);

16
drivers/nvme/host/nvme.h
View file

@ -16,6 +16,8 @@
#include <linux/fault-inject.h>
#include <linux/rcupdate.h>
#include <trace/events/block.h>
extern unsigned int nvme_io_timeout;
#define NVME_IO_TIMEOUT (nvme_io_timeout * HZ)
@ -511,6 +513,16 @@ static inline void nvme_mpath_check_last_path(struct nvme_ns *ns)
kblockd_schedule_work(&head->requeue_work);
}
static inline void nvme_trace_bio_complete(struct request *req,
blk_status_t status)
{
struct nvme_ns *ns = req->q->queuedata;
if (req->cmd_flags & REQ_NVME_MPATH)
trace_block_bio_complete(ns->head->disk->queue,
req->bio, status);
}
extern struct device_attribute dev_attr_ana_grpid;
extern struct device_attribute dev_attr_ana_state;
extern struct device_attribute subsys_attr_iopolicy;
@ -554,6 +566,10 @@ static inline void nvme_mpath_clear_current_path(struct nvme_ns *ns)
static inline void nvme_mpath_check_last_path(struct nvme_ns *ns)
{
}
static inline void nvme_trace_bio_complete(struct request *req,
blk_status_t status)
{
}
static inline int nvme_mpath_init(struct nvme_ctrl *ctrl,
struct nvme_id_ctrl *id)
{