[PATCH v3 0/3] arm64: Convert to ARCH_STACKWALK

[Mark Brown]

This series updates the arm64 stacktrace code to use the newer and much
simpler arch_stack_walk() interface, the main benefit being a single
entry point to the arch code with no need for the arch code to worry
about skipping frames. Along the way I noticed that the reliable
parameter to the arch_stack_walk() callback appears to be redundant
so there's also a patch here removing that from the existing code to
simplify the interface.

This is preparatory work for implementing reliable stack trace for
arm64.

v3:
 - Rebase onto v5.9-rc3.
 - Fix handling of task == current.
 - Flip the sense of the walk_stackframe() callback.
v2:
 - Rebase onto v5.9-rc1.

Mark Brown (3):
  stacktrace: Remove reliable argument from arch_stack_walk() callback
  arm64: stacktrace: Make stack walk callback consistent with generic
    code
  arm64: stacktrace: Convert to ARCH_STACKWALK

 arch/arm64/Kconfig                  |  1 +
 arch/arm64/include/asm/stacktrace.h |  2 +-
 arch/arm64/kernel/perf_callchain.c  |  6 +--
 arch/arm64/kernel/return_address.c  |  8 +--
 arch/arm64/kernel/stacktrace.c      | 84 +++++------------------------
 arch/s390/kernel/stacktrace.c       |  4 +-
 arch/x86/kernel/stacktrace.c        | 10 ++--
 include/linux/stacktrace.h          |  5 +-
 kernel/stacktrace.c                 |  8 ++-
 9 files changed, 32 insertions(+), 96 deletions(-)


base-commit: f75aef392f869018f78cfedf3c320a6b3fcfda6b
-- 
2.20.1