Re: [DynInst_API:] Profiling OS/kernel code using DynInst

[Bill Williams <bill@xxxxxxxxxxx>]

On 02/13/2015 10:54 AM, Rakesh Kumar wrote:
> Hi,
>
> I wanted to know if DynInst can be used to profile/instrument OS/kernel
> code in additional to the user level code. What I want to do is get some
> statistics, say hottest basic blocks, for an application but not only
> for user level code but also for OS/kernel code included.
>
> I know PIN can instrument only user level code. But I was curious if
> DynInst can instrument OS/Kernel code or not. If it cannot can somebody
> suggest any other tool that can.
>
> Thanks,
> Rakesh
>
> PS: I tried searching the answer in archives unsuccessfully.
Dyninst is purely user-level. We had a tool, KernInst, that worked at 
the kernel level but work on that has been idle for years. SystemTap 
provides an integrated kernel-space/user-space instrumentation 
interface, using Dyninst for its user-space needs, but it may operate at 
a coarser granularity than you want.
--
--bw

Bill Williams
Paradyn Project
bill@xxxxxxxxxxx