I think it is not so simple. For example, for my Sony Ericsson, and from here:

http://developer.sonymobile.com/wp/2011/05/06/how-to-build-a-linux-kernel/

I downloaded the kernel 4.0.2.A.0.42.tar.bz2 kernel, and from the semc_anzu_config file:

CONFIG_MMC_PERF_PROFILING=y

Other necessary configuration:

CONFIG_HAVE_PERF_EVENTS=y

CONFIG_PERF_EVENTS=y

CONFIG_PERF_COUNTERS=y

are absent and thus not compiled as "y". Recompiling the kernel + setting up the kernel for ARM is necessary, but the basic core perf files are available in this version though.

On Sun, Jul 8, 2012 at 2:18 PM, Peter Teoh <htmldeveloper@gmail.com> wrote:

I think it is not so simple. For example, for my Sony Ericsson, and from here:

http://developer.sonymobile.com/wp/2011/05/06/how-to-build-a-linux-kernel/

I downloaded the kernel 4

On Sat, Jul 7, 2012 at 6:59 PM, Philipp Ittershagen <p.ittershagen@googlemail.com> wrote:

Hello Sandeep,

you need an ARM toolchain to compile the perf userspace tool, which is
the second thing you need in order to use perf on a machine (the first
thing is the kernel stuff, which you already have). So the things you
have to do is

(1) compile/install your own ARM toolchain and compile all libraries
which are needed for perf or
(2) find a static perf compiled for ARM which you can copy to your device.

Greetings,

Philipp

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Regards,
Peter Teoh

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Regards,
Peter Teoh