| Message ID | 1595504787-19429-4-git-send-email-cang@codeaurora.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | None | expand |
> Dumping testbus registers needs to sleep a bit intermittently as there are > too many of them. Skip them for those contexts where sleep is not allowed. > > Signed-off-by: Can Guo <cang@codeaurora.org> > --- > drivers/scsi/ufs/ufs-qcom.c | 15 +++++++++------ > 1 file changed, 9 insertions(+), 6 deletions(-) > > diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c > index 7da27ee..7831b2b 100644 > --- a/drivers/scsi/ufs/ufs-qcom.c > +++ b/drivers/scsi/ufs/ufs-qcom.c > @@ -1651,13 +1651,16 @@ static void ufs_qcom_dump_dbg_regs(struct > ufs_hba *hba) > ufshcd_dump_regs(hba, REG_UFS_SYS1CLK_1US, 16 * 4, > "HCI Vendor Specific Registers "); > > - /* sleep a bit intermittently as we are dumping too much data */ > ufs_qcom_print_hw_debug_reg_all(hba, NULL, > ufs_qcom_dump_regs_wrapper); > - udelay(1000); > - ufs_qcom_testbus_read(hba); > - udelay(1000); > - ufs_qcom_print_unipro_testbus(hba); > - udelay(1000); > + > + if (in_task()) { > + /* sleep a bit intermittently as we are dumping too much data */ > + usleep_range(1000, 1100); > + ufs_qcom_testbus_read(hba); > + usleep_range(1000, 1100); > + ufs_qcom_print_unipro_testbus(hba); > + usleep_range(1000, 1100); > + } > } How about moving the intermittent sleep out of the check if preemption is disabled? And maybe then you need to switch back to uedlay?
Hi Avri, On 2020-07-27 21:05, Avri Altman wrote: >> Dumping testbus registers needs to sleep a bit intermittently as there >> are >> too many of them. Skip them for those contexts where sleep is not >> allowed. >> >> Signed-off-by: Can Guo <cang@codeaurora.org> >> --- >> drivers/scsi/ufs/ufs-qcom.c | 15 +++++++++------ >> 1 file changed, 9 insertions(+), 6 deletions(-) >> >> diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c >> index 7da27ee..7831b2b 100644 >> --- a/drivers/scsi/ufs/ufs-qcom.c >> +++ b/drivers/scsi/ufs/ufs-qcom.c >> @@ -1651,13 +1651,16 @@ static void ufs_qcom_dump_dbg_regs(struct >> ufs_hba *hba) >> ufshcd_dump_regs(hba, REG_UFS_SYS1CLK_1US, 16 * 4, >> "HCI Vendor Specific Registers "); >> >> - /* sleep a bit intermittently as we are dumping too much data >> */ >> ufs_qcom_print_hw_debug_reg_all(hba, NULL, >> ufs_qcom_dump_regs_wrapper); >> - udelay(1000); >> - ufs_qcom_testbus_read(hba); >> - udelay(1000); >> - ufs_qcom_print_unipro_testbus(hba); >> - udelay(1000); >> + >> + if (in_task()) { >> + /* sleep a bit intermittently as we are dumping too >> much data */ >> + usleep_range(1000, 1100); >> + ufs_qcom_testbus_read(hba); >> + usleep_range(1000, 1100); >> + ufs_qcom_print_unipro_testbus(hba); >> + usleep_range(1000, 1100); >> + } >> } > How about moving the intermittent sleep out of the check if preemption > is disabled? > And maybe then you need to switch back to uedlay? I will just remove all the testbus prints in next version to save us time here. Thanks, Can Guo.
diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c index 7da27ee..7831b2b 100644 --- a/drivers/scsi/ufs/ufs-qcom.c +++ b/drivers/scsi/ufs/ufs-qcom.c @@ -1651,13 +1651,16 @@ static void ufs_qcom_dump_dbg_regs(struct ufs_hba *hba) ufshcd_dump_regs(hba, REG_UFS_SYS1CLK_1US, 16 * 4, "HCI Vendor Specific Registers "); - /* sleep a bit intermittently as we are dumping too much data */ ufs_qcom_print_hw_debug_reg_all(hba, NULL, ufs_qcom_dump_regs_wrapper); - udelay(1000); - ufs_qcom_testbus_read(hba); - udelay(1000); - ufs_qcom_print_unipro_testbus(hba); - udelay(1000); + + if (in_task()) { + /* sleep a bit intermittently as we are dumping too much data */ + usleep_range(1000, 1100); + ufs_qcom_testbus_read(hba); + usleep_range(1000, 1100); + ufs_qcom_print_unipro_testbus(hba); + usleep_range(1000, 1100); + } } /**
Dumping testbus registers needs to sleep a bit intermittently as there are too many of them. Skip them for those contexts where sleep is not allowed. Signed-off-by: Can Guo <cang@codeaurora.org> --- drivers/scsi/ufs/ufs-qcom.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-)