linux-toradex.git/arch/xtensa/oprofile, branch v3.17 Linux kernel for Apalis and Colibri modules xtensa: fix oprofile building as module 2013-05-09T08:07:09+00:00 Max Filippov jcmvbkbc@gmail.com 2013-02-25T15:01:33+00:00 74f5bf029ee052e3d845672728e80b7240d14f09 Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net> 
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
xtensa: add support for oprofile 2013-02-24T03:22:54+00:00 dann dann@xtensa-linux.org 2008-05-22T00:43:50+00:00 e6ffe17ec45dd763ee8278246a112562f64a4ef2 Support call graph profiling. Keep upper two bits of PC unchanged through backtrace rather than take them from sp (a1). The stack pointer is usually in the same GB (same upper 2 bits) as PC, but technically doesn't always have to be (and might not in the future, when taking full advantage of MMU v3). Signed-off-by: Dan Nicolaescu <dann@xtensa-linux.org> Signed-off-by: Pete Delaney <piet@tensilica.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net> 
Support call graph profiling.
Keep upper two bits of PC unchanged through backtrace rather than take
them from sp (a1). The stack pointer is usually in the same GB (same
upper 2 bits) as PC, but technically doesn't always have to be (and
might not in the future, when taking full advantage of MMU v3).

Signed-off-by: Dan Nicolaescu <dann@xtensa-linux.org>
Signed-off-by: Pete Delaney <piet@tensilica.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>