1 What: /sys/class/devlink/.../
2 Date: May 2020
3 Contact: Saravana Kannan <saravanak@goog
4 Description:
5 Provide a place in sysfs for t
6 kernel at any given time. The
7 denoted as ... above, is of th
8 where <supplier> is the suppli
9 is the consumer bus:device nam
10
11 What: /sys/class/devlink/.../auto_re
12 Date: May 2020
13 Contact: Saravana Kannan <saravanak@goog
14 Description:
15 This file indicates if the dev
16 automatically removed by the d
17 supplier devices themselves ar
18
19 This will be one of the follow
20
21 - 'consumer unbind'
22 - 'supplier unbind'
23 - 'never'
24
25 'consumer unbind' means the de
26 the consumer's driver is unbou
27
28 'supplier unbind' means the de
29 the supplier's driver is unbou
30
31 'never' means the device link
32 when as long as the supplier a
33 are still present.
34
35 What: /sys/class/devlink/.../consume
36 Date: May 2020
37 Contact: Saravana Kannan <saravanak@goog
38 Description:
39 This file is a symlink to the
40
41 What: /sys/class/devlink/.../runtime
42 Date: May 2020
43 Contact: Saravana Kannan <saravanak@goog
44 Description:
45 This file indicates if the dev
46 runtime power management behav
47 devices. For example: Making s
48 runtime suspend while the cons
49
50 This will be one of the follow
51
52 === ========================
53 '0' Does not affect runtime
54 '1' Affects runtime power ma
55 === ========================
56
57 What: /sys/class/devlink/.../status
58 Date: May 2020
59 Contact: Saravana Kannan <saravanak@goog
60 Description:
61 This file indicates the status
62 of a device link is affected b
63 consumer devices have been bou
64 drivers. The status of a devic
65 and unbinding of the supplier
66 drivers and also affects wheth
67 supplier device is synced with
68 supplier device after boot up.
69 See also: sysfs-devices-state_
70
71 This will be one of the follow
72
73 - 'not tracked'
74 - 'dormant'
75 - 'available'
76 - 'consumer probing'
77 - 'active'
78 - 'supplier unbinding'
79 - 'unknown'
80
81 'not tracked' means this devic
82 and has no impact on the bindi
83 hardware and software device s
84
85 'dormant' means the supplier a
86 bound to their driver.
87
88 'available' means the supplier
89 available to supply resources
90
91 'consumer probing' means the c
92 trying to bind to its driver.
93
94 'active' means the supplier an
95 bound successfully to their dr
96
97 'supplier unbinding' means the
98 the process of unbinding from
99
100 'unknown' means the state of t
101 above. If this is ever the val
102
103 What: /sys/class/devlink/.../supplie
104 Date: May 2020
105 Contact: Saravana Kannan <saravanak@goog
106 Description:
107 This file is a symlink to the
108
109 What: /sys/class/devlink/.../sync_st
110 Date: May 2020
111 Contact: Saravana Kannan <saravanak@goog
112 Description:
113 This file indicates if the dev
114 affecting the syncing of the h
115 supplier device.
116
117 This will be one of the follow
118
119 === =========================
120 '0'
121 '1' Affects runtime power man
122 === =========================
123
124 '0' means the device link can
125 like binding/unbinding, suspen
126 management, etc.
127
128 '1' means the device link will
129 hardware and software state of
130 up and doesn't not affect othe
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