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authorDavid Vrabel <david.vrabel@csr.com>2009-01-02 08:17:13 -0500
committerDavid Vrabel <david.vrabel@csr.com>2009-01-02 08:17:13 -0500
commitb21a207141d83a06abc5f492b80204602e02ca44 (patch)
treef0152cde543008c72d7eb5c12c18095ad92785e6 /Documentation/usb/usbmon.txt
parent3af373021fa32f8f787bfbdcc1a9277a287bde4e (diff)
parentb58602a4bac012b5f4fc12fe6b46ab237b610d5d (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-upstream
Conflicts: drivers/uwb/wlp/eda.c
Diffstat (limited to 'Documentation/usb/usbmon.txt')
-rw-r--r--Documentation/usb/usbmon.txt12
1 files changed, 7 insertions, 5 deletions
diff --git a/Documentation/usb/usbmon.txt b/Documentation/usb/usbmon.txt
index 2917ce4ffdc4..270481906dc8 100644
--- a/Documentation/usb/usbmon.txt
+++ b/Documentation/usb/usbmon.txt
@@ -34,11 +34,12 @@ if usbmon is built into the kernel.
34Verify that bus sockets are present. 34Verify that bus sockets are present.
35 35
36# ls /sys/kernel/debug/usbmon 36# ls /sys/kernel/debug/usbmon
370s 0t 0u 1s 1t 1u 2s 2t 2u 3s 3t 3u 4s 4t 4u 370s 0u 1s 1t 1u 2s 2t 2u 3s 3t 3u 4s 4t 4u
38# 38#
39 39
40Now you can choose to either use the sockets numbered '0' (to capture packets on 40Now you can choose to either use the socket '0u' (to capture packets on all
41all buses), and skip to step #3, or find the bus used by your device with step #2. 41buses), and skip to step #3, or find the bus used by your device with step #2.
42This allows to filter away annoying devices that talk continuously.
42 43
432. Find which bus connects to the desired device 442. Find which bus connects to the desired device
44 45
@@ -99,8 +100,9 @@ on the event type, but there is a set of words, common for all types.
99 100
100Here is the list of words, from left to right: 101Here is the list of words, from left to right:
101 102
102- URB Tag. This is used to identify URBs is normally a kernel mode address 103- URB Tag. This is used to identify URBs, and is normally an in-kernel address
103 of the URB structure in hexadecimal. 104 of the URB structure in hexadecimal, but can be a sequence number or any
105 other unique string, within reason.
104 106
105- Timestamp in microseconds, a decimal number. The timestamp's resolution 107- Timestamp in microseconds, a decimal number. The timestamp's resolution
106 depends on available clock, and so it can be much worse than a microsecond 108 depends on available clock, and so it can be much worse than a microsecond