Add USER_STACKTRACE support and Fix callchain_trace() return value bug
by the way.

Jinjie Ruan (2):
  ARM: 9258/1: Fix callchain_trace() return value
  ARM: 9259/1: stacktrace: Add USER_STACKTRACE support

 arch/arm/Kconfig                 |  1 +
 arch/arm/kernel/perf_callchain.c | 73 +++-----------------------------
 arch/arm/kernel/stacktrace.c     | 65 ++++++++++++++++++++++++++++
 3 files changed, 73 insertions(+), 66 deletions(-)

-- 
2.34.1