1 What: /sys/module/pch_phub/drivers/.../pch_mac
2 Date: August 2010
3 KernelVersion: 2.6.35
4 Contact: masa-korg@dsn.okisemi.com
5 Description: Write/read GbE MAC address.
6
7 What: /sys/module/pch_phub/drivers/.../pch_firmware
8 Date: August 2010
9 KernelVersion: 2.6.35
10 Contact: masa-korg@dsn.okisemi.com
11 Description: Write/read Option ROM data.
12
13
14 What: /sys/module/ehci_hcd/drivers/.../uframe_periodic_max
15 Date: July 2011
16 KernelVersion: 3.1
17 Contact: Kirill Smelkov <kirr@mns.spb.ru>
18 Description: Maximum time allowed for periodic transfers per microframe (μs)
19
20 Note:
21 USB 2.0 sets maximum allowed time for periodic transfers per
22 microframe to be 80%, that is 100 microseconds out of 125
23 microseconds (full microframe).
24
25 However there are cases, when 80% max isochronous bandwidth is
26 too limiting. For example two video streams could require 110
27 microseconds of isochronous bandwidth per microframe to work
28 together.
29
30 Through this setting it is possible to raise the limit so that
31 the host controller would allow allocating more than 100
32 microseconds of periodic bandwidth per microframe.
33
34 Beware, non-standard modes are usually not thoroughly tested by
35 hardware designers, and the hardware can malfunction when this
36 setting differ from default 100.
37
38 What: /sys/module/*/{coresize,initsize}
39 Date: Jan 2012
40 KernelVersion: 3.3
41 Contact: Kay Sievers <kay.sievers@vrfy.org>
42 Description: Module size in bytes.
43
44 What: /sys/module/*/initstate
45 Date: Nov 2006
46 KernelVersion: 2.6.19
47 Contact: Kay Sievers <kay.sievers@vrfy.org>
48 Description: Show the initialization state(live, coming, going) of
49 the module.
50
51 What: /sys/module/*/taint
52 Date: Jan 2012
53 KernelVersion: 3.3
54 Contact: Kay Sievers <kay.sievers@vrfy.org>
55 Description: Module taint flags:
56 == =====================
57 P proprietary module
58 O out-of-tree module
59 F force-loaded module
60 C staging driver module
61 E unsigned module
62 == =====================
63
64 What: /sys/module/grant_table/parameters/free_per_iteration
65 Date: July 2023
66 KernelVersion: 6.5 but backported to all supported stable branches
67 Contact: Xen developer discussion <xen-devel@lists.xenproject.org>
68 Description: Read and write number of grant entries to attempt to free per iteration.
69
70 Note: Future versions of Xen and Linux may provide a better
71 interface for controlling the rate of deferred grant reclaim
72 or may not need it at all.
73 Users: Qubes OS (https://www.qubes-os.org)
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