On Thu, May 21, 2020 at 12:18 PM Saravana Kannan <[email protected]> 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/[email protected]/ > > 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. -Saravana
