| Message ID | 20220228113652.970857-1-adrian.hunter@intel.com |
|---|---|
| Headers | show |
| Series | scsi: ufs: Fix runtime PM messages never-ending cycle | expand |
Adrian, > Kernel messages produced during runtime PM can cause a never-ending > cycle because user space utilities (e.g. journald or rsyslog) write > the messages back to storage, causing runtime resume, more messages, > and so on. > > Messages that tell of things that are expected to happen, are arguably > unnecessary, so make changes to suppress them for the UFS driver. Applied to 5.18/scsi-staging, thanks!
On Mon, 28 Feb 2022 13:36:50 +0200, Adrian Hunter wrote: > Here is V4 to address comments by Martin. See patches for version history. > > Summary: > > Kernel messages produced during runtime PM can cause a never-ending > cycle because user space utilities (e.g. journald or rsyslog) write the > messages back to storage, causing runtime resume, more messages, and so > on. > > [...] Applied to 5.18/scsi-queue, thanks! [1/2] scsi: Add quiet_suspend flag for SCSI devices to suppress some PM messages https://git.kernel.org/mkp/scsi/c/af4edb1d50c6 [2/2] scsi: ufs: Fix runtime PM messages never-ending cycle https://git.kernel.org/mkp/scsi/c/71bb9ab6e351
Hi Here is V4 to address comments by Martin. See patches for version history. Summary: Kernel messages produced during runtime PM can cause a never-ending cycle because user space utilities (e.g. journald or rsyslog) write the messages back to storage, causing runtime resume, more messages, and so on. Messages that tell of things that are expected to happen, are arguably unnecessary, so make changes to suppress them for the UFS driver. Adrian Hunter (2): scsi: Add quiet_suspend flag for SCSI devices to suppress some PM messages scsi: ufs: Fix runtime PM messages never-ending cycle drivers/scsi/scsi_error.c | 9 +++++++-- drivers/scsi/sd.c | 6 ++++-- drivers/scsi/ufs/ufshcd.c | 21 +++++++++++++++++++-- include/scsi/scsi_device.h | 6 ++++++ 4 files changed, 36 insertions(+), 6 deletions(-) Regards Adrian