diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2021-02-09 09:24:37 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-03-05 01:36:59 +0300 |
| commit | 7deedfdaeccfec5a9c41dbb83f1725cf11e3ff39 (patch) | |
| tree | 8948e22e538daf5d88ed9aca128ff765eee1b5af /drivers/scsi/ufs/ufshcd.h | |
| parent | cd4694756188dcca0f631e60da26053be1ffdc91 (diff) | |
| download | linux-7deedfdaeccfec5a9c41dbb83f1725cf11e3ff39.tar.xz | |
scsi: ufs: ufs-debugfs: Add user-defined exception event rate limiting
An enabled user-specified exception event that does not clear quickly will
repeatedly cause the handler to run. That could unduly disturb the driver
behaviour being tested or debugged. To prevent that add debugfs file
exception_event_rate_limit_ms. When a exception event happens, it is
disabled, and then after a period of time (default 20ms) the exception
event is enabled again.
Note that if the driver also has that exception event enabled, it will not
be disabled.
Link: https://lore.kernel.org/r/20210209062437.6954-5-adrian.hunter@intel.com
Acked-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ufs/ufshcd.h')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 9011a6dee16e..1af91661dc83 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -843,6 +843,8 @@ struct ufs_hba { #endif #ifdef CONFIG_DEBUG_FS struct dentry *debugfs_root; + struct delayed_work debugfs_ee_work; + u32 debugfs_ee_rate_limit_ms; #endif }; @@ -1288,6 +1290,8 @@ static inline u8 ufshcd_scsi_to_upiu_lun(unsigned int scsi_lun) int ufshcd_dump_regs(struct ufs_hba *hba, size_t offset, size_t len, const char *prefix); +int __ufshcd_write_ee_control(struct ufs_hba *hba, u32 ee_ctrl_mask); +int ufshcd_write_ee_control(struct ufs_hba *hba); int ufshcd_update_ee_control(struct ufs_hba *hba, u16 *mask, u16 *other_mask, u16 set, u16 clr); |