On 3/02/21 8:53 am, DooHyun Hwang wrote:
> Since the total error history count is unknown because the error history
> records only the number of UFS_EVENT_HIST_LENGTH, add a member to count
> each error history.
>
> Signed-off-by: DooHyun Hwang <[email protected]>
Hi
Please note that the following patch is already queued - see linux-next
commit b6cacaf2044fd9b82e5ceac88d8d17e04a01982f
Author: Adrian Hunter <[email protected]>
Date: Thu Jan 7 09:25:38 2021 +0200
scsi: ufs: ufs-debugfs: Add error counters
People testing have a need to know how many errors might be occurring over
time. Add error counters and expose them via debugfs.
A module initcall is used to create a debugfs root directory for
ufshcd-related items. In the case that modules are built-in, then
initialization is done in link order, so move ufshcd-core to the top of the
Makefile.
Link:
https://lore.kernel.org/r/[email protected]
Reviewed-by: Avri Altman <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Reviewed-by: Can Guo <[email protected]>
Signed-off-by: Adrian Hunter <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
> ---
> drivers/scsi/ufs/ufshcd.c | 3 +++
> drivers/scsi/ufs/ufshcd.h | 1 +
> 2 files changed, 4 insertions(+)
>
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index fb32d122f2e3..7ebc892553fc 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -437,6 +437,8 @@ static void ufshcd_print_evt(struct ufs_hba *hba, u32 id,
>
> if (!found)
> dev_err(hba->dev, "No record of %s\n", err_name);
> + else
> + dev_err(hba->dev, "%s: total count=%u\n", err_name, e->count);
> }
>
> static void ufshcd_print_evt_hist(struct ufs_hba *hba)
> @@ -4544,6 +4546,7 @@ void ufshcd_update_evt_hist(struct ufs_hba *hba, u32
> id, u32 val)
> e->val[e->pos] = val;
> e->tstamp[e->pos] = ktime_get();
> e->pos = (e->pos + 1) % UFS_EVENT_HIST_LENGTH;
> + e->count++;
>
> ufshcd_vops_event_notify(hba, id, &val);
> }
> diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
> index aa9ea3552323..df28d3fc89a5 100644
> --- a/drivers/scsi/ufs/ufshcd.h
> +++ b/drivers/scsi/ufs/ufshcd.h
> @@ -450,6 +450,7 @@ struct ufs_event_hist {
> int pos;
> u32 val[UFS_EVENT_HIST_LENGTH];
> ktime_t tstamp[UFS_EVENT_HIST_LENGTH];
> + u32 count;
> };
>
> /**
>
