lkml.org 
[lkml]   [2020]   [May]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v3 0/3] driver core: Add device link related sysfs files
On Thu, May 28, 2020 at 02:18:23PM -0700, Saravana Kannan wrote:
> On Thu, May 21, 2020 at 12:18 PM Saravana Kannan <saravanak@google.com> wrote:
> >
> > With fw_devlink and with sync_state() callback features, there's a lot
> > of device/device link related information that's not available in sysfs.
> >
> > Exposing these details to user space can be very useful in understanding
> > suspend/resume issues, runtime pm issues, probing issues, figuring out
> > the modules that'd be needed for first stage init, etc. In fact, an
> > earlier verion of this series was very helpful in debugging and
> > validating the recent memory leak fix[1].
> >
> > This series is based on driver-core-next and [1] cherry-picked on top of
> > it.
> >
> > [1] - https://lore.kernel.org/lkml/20200519063000.128819-1-saravanak@google.com/
> >
> > v1->v2:
> > Patch 1/4
> > - New patch
> > Patch 2/4
> > - Fixed the warnings I saw before that were related to incorrect
> > sysfs removal code when a device link is deleted.
> > - Fixed error handling in device_link_add()
> > - Split up flags into more meaningful files.
> > - Added status file.
> > Patch 3/4
> > - Fixed error handling that Greg pointed out before.
> > Patch 4/4
> > - New patch
> >
> > v2->v3:
> > - Dropped patch 1/4 from v2 since it was already picked up. So numbering
> > has shifted.
> > Patch 1/3
> > - Added documentation
> >
> > Saravana Kannan (3):
> > driver core: Expose device link details in sysfs
> > driver core: Add state_synced sysfs file for devices that support it
> > driver core: Add waiting_for_supplier sysfs file for devices
> >
> > Documentation/ABI/testing/sysfs-class-devlink | 126 ++++++++++
> > .../ABI/testing/sysfs-devices-consumer | 8 +
> > .../ABI/testing/sysfs-devices-state_synced | 24 ++
> > .../ABI/testing/sysfs-devices-supplier | 8 +
> > .../sysfs-devices-waiting_for_supplier | 17 ++
> > drivers/base/core.c | 237 +++++++++++++++++-
> > drivers/base/dd.c | 22 ++
> > include/linux/device.h | 58 ++---
> > 8 files changed, 464 insertions(+), 36 deletions(-)
> > create mode 100644 Documentation/ABI/testing/sysfs-class-devlink
> > create mode 100644 Documentation/ABI/testing/sysfs-devices-consumer
> > create mode 100644 Documentation/ABI/testing/sysfs-devices-state_synced
> > create mode 100644 Documentation/ABI/testing/sysfs-devices-supplier
> > create mode 100644 Documentation/ABI/testing/sysfs-devices-waiting_for_supplier
>
> Friendly reminder.

Looks semi-sane, but it's too close to the merge window at the moment
for me to take this. If there's no objections by the time 5.8-rc1 is
out, I'll queue it up in my tree for 5.9-rc1.

thanks,

greg k-h

\
 
 \ /
  Last update: 2020-05-29 14:31    [W:0.114 / U:1.212 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site