On Fri, 6 Apr 2001, John Baldwin wrote:
> I have two new ddb commands for the i386. Porting them to other platforms
> shouldn't be overly difficult. Both of them are "show" commands. The first is
> a 'show ptrace XX' command which displays a backtrace of the process with the
> decimal pid XX. Since ddb always assumes any address (i.e. parameter) is in
> hex, I had to do some funky shifting to make it more intuitive. As a result,
> both 'show ptrace 15' and 'show ptrace 0x15' will give a backtrace for process
> 15. If no pid is specified, then it acts just like 'show trace' and displays
> the current process' trace.
Thats exactly what doctor ordered! This significantly simplifies
amount of work needs to be done when there is a need to trace where
process is hung.
> The second command is 'show pcpu xx' which displays some of the per-cpu data
> for the cpu with the cpuid xx. If an id is not specified, then the current
> CPU's info is displayed. Currently the only fields displayed are the cpuid,
> curproc, curpcb, and npxproc fields. In addition, if witness is compiled into
> the kernel, then a list of spinlocks held by the CPU in question is listed.
Well, when I manage my kernel to boot with witness, spinlock list
will be a big help.
--
Boris Popov
http://www.butya.kz/~bp/
To Unsubscribe: send mail to [EMAIL PROTECTED]
with "unsubscribe freebsd-hackers" in the body of the message
