[PATCH v7 07/13] peci: Add sysfs interface for PECI bus
Greg Kroah-Hartman
gregkh at linuxfoundation.org
Tue Feb 8 22:08:06 AEDT 2022
On Wed, Feb 02, 2022 at 03:48:32PM +0100, Iwona Winiarska wrote:
> PECI devices may not be discoverable at the time when PECI controller is
> being added (e.g. BMC can boot up when the Host system is still in S5).
> Since we currently don't have the capabilities to figure out the Host
> system state inside the PECI subsystem itself, we have to rely on
> userspace to do it for us.
>
> In the future, PECI subsystem may be expanded with mechanisms that allow
> us to avoid depending on userspace interaction (e.g. CPU presence could
> be detected using GPIO, and the information on whether it's discoverable
> could be obtained over IPMI).
> Unfortunately, those methods may ultimately not be available (support
> will vary from platform to platform), which means that we still need
> platform independent method triggered by userspace.
>
> Signed-off-by: Iwona Winiarska <iwona.winiarska at intel.com>
> ---
> Documentation/ABI/testing/sysfs-bus-peci | 16 +++++
> drivers/peci/Makefile | 2 +-
> drivers/peci/core.c | 3 +-
> drivers/peci/device.c | 1 +
> drivers/peci/internal.h | 5 ++
> drivers/peci/sysfs.c | 82 ++++++++++++++++++++++++
> 6 files changed, 107 insertions(+), 2 deletions(-)
> create mode 100644 Documentation/ABI/testing/sysfs-bus-peci
> create mode 100644 drivers/peci/sysfs.c
>
> diff --git a/Documentation/ABI/testing/sysfs-bus-peci b/Documentation/ABI/testing/sysfs-bus-peci
> new file mode 100644
> index 000000000000..56c2b2216bbd
> --- /dev/null
> +++ b/Documentation/ABI/testing/sysfs-bus-peci
> @@ -0,0 +1,16 @@
> +What: /sys/bus/peci/rescan
> +Date: July 2021
> +KernelVersion: 5.15
5.15 was a long time ago :(
Other than this nit, these all look semi-sane to me. What tree are you
wanting these to go through, mine? If so, can you fix this up (both
places in this file) and resend?
thanks,
greg k-h
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