linux/Documentation/ABI/testing/sysfs-devices-supplier

What:		/sys/devices/.../supplier:<supplier>
Date:		May 2020
Contact:	Saravana Kannan <saravanak@google.com>
Description:
		The /sys/devices/.../supplier:<supplier> are symlinks to device
		links where this device is the consumer. <supplier> denotes the
		name of the supplier in that device link. There can be zero or
		more of these symlinks for a given device.
driver core: Expose device link details in sysfs It's helpful to be able to look at device link details from sysfs. So, expose it in sysfs. Say device-A is supplier of device-B. These are the additional files this patch would create: /sys/class/devlink/device-A:device-B/ auto_remove_on consumer/ -> .../device-B/ runtime_pm status supplier/ -> .../device-A/ sync_state_only /sys/devices/.../device-A/ consumer:device-B/ -> /sys/class/devlink/device-A:device-B/ /sys/devices/.../device-B/ supplier:device-A/ -> /sys/class/devlink/device-A:device-B/ That way: To get a list of all the device link in the system: ls /sys/class/devlink/ To get the consumer names and links of a device: ls -d /sys/devices/.../device-X/consumer:* To get the supplier names and links of a device: ls -d /sys/devices/.../device-X/supplier:* Signed-off-by: Saravana Kannan <saravanak@google.com> Link: https://lore.kernel.org/r/20200521191800.136035-2-saravanak@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2020-05-21 19:17:58 +00:00			`What: /sys/devices/.../supplier:<supplier>`
			`Date: May 2020`
			`Contact: Saravana Kannan <saravanak@google.com>`
			`Description:`
			`The /sys/devices/.../supplier:<supplier> are symlinks to device`
			`links where this device is the consumer. <supplier> denotes the`
			`name of the supplier in that device link. There can be zero or`
			`more of these symlinks for a given device.`