> -----Original Message----- > From: Marc Zyngier [mailto:marc.zyngier@xxxxxxx] > Sent: Thursday, November 08, 2012 5:12 PM > To: Sundaram, Senthilkumar > Cc: kvmarm@xxxxxxxxxxxxxxxxxxxxx > Subject: Re: Using perf: Getting guest kallsyms > > On 08/11/12 10:34, Sundaram, Senthilkumar wrote: > > Hi > > > > I am running within A15 fast model. > > > > I want to run perf ( from the Host) and record guest cpu utilization across > various modules & functions. For this it looks like I need guest kallsyms. How > do I get this? > > I wonder how useful this will be. We don't have any code that performs a > backtrace in the guest yet, so all you will know is the PC at the moment the > the perf interrupt fired. You're welcome to contribute patches implementing > this though (hint, hint...). > > Otherwise, you can probably use the System.map file generated when you > compiled your guest kernel. > [[ss]] Mark, Perf command is explicitly asking for guestkallsyms as one of the options, so I was looking for it. Are you suggesting that I use system.map as the value of the guestkallsyms argument in the perf command I thought if the symbols were relocated during the loading of the kernel system.map may not be accurate? But I will give it a shot. Thanks Senthil > M. > -- > Jazz is not dead. It just smells funny... _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/cucslists/listinfo/kvmarm
