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authorChaitanya Kulkarni <chaitanya.kulkarni@wdc.com>2018-12-12 15:11:39 -0800
committerChristoph Hellwig <hch@lst.de>2018-12-13 09:59:02 +0100
commite4a976254ec5ebdcdb3e1e1b40e795b3db6b6dab (patch)
tree2f8137e6d7953324185ec62e83dcf5ba0467dbe3 /drivers/nvme/target/nvmet.h
parentb34de7cee0a65f2557bb05447fbe2cc7a9c46750 (diff)
downloadlinux-e4a976254ec5ebdcdb3e1e1b40e795b3db6b6dab.tar.bz2
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/target/nvmet.h')
-rw-r--r--drivers/nvme/target/nvmet.h6
1 files changed, 6 insertions, 0 deletions
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;