From: ginu jacob

Is the package linux-tools-3.15.0 available with Linaro 12.11 ? This package is required for using the perf command but when trying to install this package, I am getting an unable to locate error. Can somebody please help.

I had a similar query back in August. I ended up removing the Linaro bbappend since the poky perf.bb builds fine using the perf contained in the kernel source.

https://lists.linaro.org/pipermail/linaro-dev/2015-August/018028.html

Ed