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Revert "ARM: 8800/1: use choice for kernel unwinders"

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This reverts commit b182bc7139 which is
commit f9b58e8c7d031b0daa5c9a9ee27f5a4028ba53ac upstream.

It is not needed in Android kernels, and it breaks the arm allmodconfig
build at this point in time, due to an invalid gcc check.

Fixes: b182bc7139 ("ARM: 8800/1: use choice for kernel unwinders")
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Iaf71effdf977b4dd74e583ac4a4b49af4ac4b59e
This commit is contained in:
Greg Kroah-Hartman
2021-12-28 13:38:55 +01:00
parent b14211564d
commit 0a598109d3
2 changed files with 19 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
arch/arm/Kconfig.debug
View File

@@ -45,42 +45,30 @@ config DEBUG_WX
If in doubt, say "Y".
choice
prompt "Choose kernel unwinder"
default UNWINDER_ARM if AEABI && !FUNCTION_GRAPH_TRACER
default UNWINDER_FRAME_POINTER if !AEABI || FUNCTION_GRAPH_TRACER
# RMK wants arm kernels compiled with frame pointers or stack unwinding.
# If you know what you are doing and are willing to live without stack
# traces, you can get a slightly smaller kernel by setting this option to
# n, but then RMK will have to kill you ;).
config FRAME_POINTER
bool
depends on !THUMB2_KERNEL
default y if !ARM_UNWIND || FUNCTION_GRAPH_TRACER
help
This determines which method will be used for unwinding kernel stack
traces for panics, oopses, bugs, warnings, perf, /proc/<pid>/stack,
livepatch, lockdep, and more.
If you say N here, the resulting kernel will be slightly smaller and
faster. However, if neither FRAME_POINTER nor ARM_UNWIND are enabled,
when a problem occurs with the kernel, the information that is
reported is severely limited.
config UNWINDER_FRAME_POINTER
bool "Frame pointer unwinder"
depends on !THUMB2_KERNEL && !CC_IS_CLANG
select ARCH_WANT_FRAME_POINTERS
select FRAME_POINTER
help
This option enables the frame pointer unwinder for unwinding
kernel stack traces.
config UNWINDER_ARM
bool "ARM EABI stack unwinder"
config ARM_UNWIND
bool "Enable stack unwinding support (EXPERIMENTAL)"
depends on AEABI
select ARM_UNWIND
default y
help
This option enables stack unwinding support in the kernel
using the information automatically generated by the
compiler. The resulting kernel image is slightly bigger but
the performance is not affected. Currently, this feature
only works with EABI compilers.
endchoice
config ARM_UNWIND
bool
config FRAME_POINTER
bool
only works with EABI compilers. If unsure say Y.
config OLD_MCOUNT
bool

6
lib/Kconfig.debug
View File

@@ -1178,7 +1178,7 @@ config LOCKDEP
bool
depends on DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT
select STACKTRACE
select FRAME_POINTER if !MIPS && !PPC && !ARM && !S390 && !MICROBLAZE && !ARC && !X86
select FRAME_POINTER if !MIPS && !PPC && !ARM_UNWIND && !S390 && !MICROBLAZE && !ARC && !X86
select KALLSYMS
select KALLSYMS_ALL
@@ -1589,7 +1589,7 @@ config FAULT_INJECTION_STACKTRACE_FILTER
depends on FAULT_INJECTION_DEBUG_FS && STACKTRACE_SUPPORT
depends on !X86_64
select STACKTRACE
select FRAME_POINTER if !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM && !ARC && !X86
select FRAME_POINTER if !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM_UNWIND && !ARC && !X86
help
Provide stacktrace filter for fault-injection capabilities
@@ -1598,7 +1598,7 @@ config LATENCYTOP
depends on DEBUG_KERNEL
depends on STACKTRACE_SUPPORT
depends on PROC_FS
select FRAME_POINTER if !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM && !ARC && !X86
select FRAME_POINTER if !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM_UNWIND && !ARC && !X86
select KALLSYMS
select KALLSYMS_ALL
select STACKTRACE