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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2019-06-09 17:17:01 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2019-06-21 12:15:50 +0300 |
| commit | f79d5fda4ea08c33a114087573d86f703149ee0e (patch) | |
| tree | 486ed1a351edbbc6e771560b9ca11544fa65b8cc /drivers/nvme/host/core.c | |
| parent | a3646451edd52ba238cbe4f618aaf6eb9bf9d60c (diff) | |
| download | linux-f79d5fda4ea08c33a114087573d86f703149ee0e.tar.xz | |
nvme: enable to inject errors into admin commands
This enables to inject errors into the commands submitted to the admin
queue.
It is useful to test error handling in the controller initialization.
# echo 100 > /sys/kernel/debug/nvme0/fault_inject/probability
# echo 1 > /sys/kernel/debug/nvme0/fault_inject/times
# echo 10 > /sys/kernel/debug/nvme0/fault_inject/space
# nvme reset /dev/nvme0
# dmesg
...
nvme nvme0: Could not set queue count (16385)
nvme nvme0: IO queues not created
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Reviewed-by: Minwoo Im <minwoo.im.dev@gmail.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/nvme/host/core.c')
| -rw-r--r-- | drivers/nvme/host/core.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 625605f8a0b5..b2dd4e391f5c 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -3722,6 +3722,7 @@ EXPORT_SYMBOL_GPL(nvme_start_ctrl); void nvme_uninit_ctrl(struct nvme_ctrl *ctrl) { + nvme_fault_inject_fini(&ctrl->fault_inject); dev_pm_qos_hide_latency_tolerance(ctrl->device); cdev_device_del(&ctrl->cdev, ctrl->device); } @@ -3817,6 +3818,8 @@ int nvme_init_ctrl(struct nvme_ctrl *ctrl, struct device *dev, dev_pm_qos_update_user_latency_tolerance(ctrl->device, min(default_ps_max_latency_us, (unsigned long)S32_MAX)); + nvme_fault_inject_init(&ctrl->fault_inject, dev_name(ctrl->device)); + return 0; out_free_name: kfree_const(ctrl->device->kobj.name); |