linux/arch/xtensa/kernel/stacktrace.c, branch v4.5Mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/
https://git.shady.money/linux/atom?h=v4.52015-08-17T04:32:49Zxtensa: move oprofile stack tracing to stacktrace.c2015-08-17T04:32:49ZMax Filippovjcmvbkbc@gmail.com2015-06-25T04:27:16Zurn:sha1:5fdf377d802ddd439fe16dd2e9e38039af535af2
Old oprofile interface will share user stack tracing with new perf
interface. Move oprofile user/kernel stack tracing to stacktrace.c to
make it possible.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
xtensa: provide custom CALLER_ADDR* implementations2013-05-09T08:07:10ZMax Filippovjcmvbkbc@gmail.com2013-04-07T21:29:19Zurn:sha1:3ae908c99e944a7a5c4f4b2d8c603a6bc57b728b
Definition of CALLER_ADDR* through __builtin_return_address makes
compiler insert calls to __xtensa_libgcc_window_spill, which in turn
makes fast_syscall_spill_registers syscall that clobbers registers when
called from the kernel mode, leading to invalid opcode exceptions on
return to userspace.
Provide definition for CALLER_ADDR0 as MAKE_PC_FROM_RA(a0, a1) and in
case CONFIG_FRAME_POINTER is enabled extract CALLER_ADDR{1-3} from
stack.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
xtensa: add stacktrace support2013-05-09T08:07:10ZMax Filippovjcmvbkbc@gmail.com2013-04-15T05:20:48Zurn:sha1:3e4196a5cc9cff50900f3dc8acc3d41e5963fd50
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>