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| author | Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> | 2018-12-12 15:11:39 -0800 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2018-12-13 09:59:02 +0100 |
| commit | e4a976254ec5ebdcdb3e1e1b40e795b3db6b6dab (patch) | |
| tree | 2f8137e6d7953324185ec62e83dcf5ba0467dbe3 /drivers/nvme | |
| parent | b34de7cee0a65f2557bb05447fbe2cc7a9c46750 (diff) | |
| download | blackbird-op-linux-e4a976254ec5ebdcdb3e1e1b40e795b3db6b6dab.tar.gz blackbird-op-linux-e4a976254ec5ebdcdb3e1e1b40e795b3db6b6dab.zip | |
nvmet: add error-log definitions
This patch adds necessary fields in the target data structures to
support error log page. For a target controller, we add a new error log
field to maintain the error log, at any given point we maintain error
entries equal to NVMET_ERROR_LOG_SLOTS for each controller. In the
following patch, we also update the error log page entry in the I/O
completion path so we introduce a spinlock for synchronization of the
log.
For nvmet_req, we add a new field error_loc to hold the location of
the error in the command when the actual error occurs for each request
and a starting LBA if applicable.
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/nvme')
| -rw-r--r-- | drivers/nvme/target/core.c | 5 | ||||
| -rw-r--r-- | drivers/nvme/target/nvmet.h | 6 |
2 files changed, 11 insertions, 0 deletions
diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c index e468100b9211..32dca1b50c21 100644 --- a/drivers/nvme/target/core.c +++ b/drivers/nvme/target/core.c @@ -769,6 +769,8 @@ bool nvmet_req_init(struct nvmet_req *req, struct nvmet_cq *cq, req->rsp->status = 0; req->rsp->sq_head = 0; req->ns = NULL; + req->error_loc = -1; + req->error_slba = 0; /* no support for fused commands yet */ if (unlikely(flags & (NVME_CMD_FUSE_FIRST | NVME_CMD_FUSE_SECOND))) { @@ -1174,6 +1176,9 @@ u16 nvmet_alloc_ctrl(const char *subsysnqn, const char *hostnqn, /* keep-alive timeout in seconds */ ctrl->kato = DIV_ROUND_UP(kato, 1000); + ctrl->err_counter = 0; + spin_lock_init(&ctrl->error_lock); + nvmet_start_keep_alive_timer(ctrl); mutex_lock(&subsys->lock); diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h index dafee1af4829..61b3cc415905 100644 --- a/drivers/nvme/target/nvmet.h +++ b/drivers/nvme/target/nvmet.h @@ -202,6 +202,10 @@ struct nvmet_ctrl { struct device *p2p_client; struct radix_tree_root p2p_ns_map; + + spinlock_t error_lock; + u64 err_counter; + struct nvme_error_slot slots[NVMET_ERROR_LOG_SLOTS]; }; struct nvmet_subsys { @@ -317,6 +321,8 @@ struct nvmet_req { struct pci_dev *p2p_dev; struct device *p2p_client; + u16 error_loc; + u64 error_slba; }; extern struct workqueue_struct *buffered_io_wq; |
