cvs commit: src/sys/kern subr_sleepqueue.c

[John Baldwin]

On Friday 27 January 2006 17:24, John Baldwin wrote:
> jhb         2006-01-27 22:24:07 UTC
>
>   FreeBSD src repository
>
>   Modified files:
>     sys/kern             subr_sleepqueue.c
>   Log:
>   Add a new ddb command 'show sleepq'.  It takes a wait channel as an
>   argument and looks for a sleep queue associated with that wait channel.
>   If it finds one it will display information such as the list of threads
>   sleeping on that queue.  If it can't find a sleep queue for that wait
>   channel, then it will see if that address matches any of the active
>   sleep queues.  If so, it will display information about the sleepq at the
>   specified address.

Sample output:

db> show sleepq 0xc477d780
Wait channel: 0xc477d780
Queue type: 1
Associated Interlock: 0xc477d788 - (sleep mutex) crash2 event
Blocked threads:
        0xc4754a80 (tid 100059, pid 57, "crash2: 1")
        0xc4754c00 (tid 100058, pid 58, "crash2: 2")
        0xc4754900 (tid 100060, pid 56, "crash2: 0")
        0xc4754d80 (tid 100057, pid 59, "crash2: 3")
db> show sleepq 0xc07c5b70
Wait channel: 0xc07c5b70
Queue type: 0
Blocked threads:
        0xc44ffc00 (tid 100047, pid 41, "syncer")

-- 
John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org