diff options
author | Helge Deller <deller@gmx.de> | 2018-08-05 00:03:29 +0200 |
---|---|---|
committer | Helge Deller <deller@gmx.de> | 2018-08-13 09:54:17 +0200 |
commit | c8921d72e390cb6fca3fb2b0c2badfda851647eb (patch) | |
tree | 8c6aec1a9405da9caad70088a7dfd910b71b6675 /arch/parisc/include/asm/assembly.h | |
parent | 3b885ac1dc35b87a39ee176a6c7e2af9c789d8b8 (diff) |
parisc: Fix and improve kernel stack unwinding
This patchset fixes and improves stack unwinding a lot:
1. Show backward stack traces with up to 30 callsites
2. Add callinfo to ENTRY_CFI() such that every assembler function will get an
entry in the unwind table
3. Use constants instead of numbers in call_on_stack()
4. Do not depend on CONFIG_KALLSYMS to generate backtraces.
5. Speed up backtrace generation
Make sure you have this patch to GNU as installed:
https://sourceware.org/ml/binutils/2018-07/msg00474.html
Without this patch, unwind info in the kernel is often wrong for various
functions.
Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch/parisc/include/asm/assembly.h')
-rw-r--r-- | arch/parisc/include/asm/assembly.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/assembly.h b/arch/parisc/include/asm/assembly.h index 60e6f07b7e32..e9c6385ef0d1 100644 --- a/arch/parisc/include/asm/assembly.h +++ b/arch/parisc/include/asm/assembly.h @@ -36,6 +36,7 @@ #define RP_OFFSET 16 #define FRAME_SIZE 128 #define CALLEE_REG_FRAME_SIZE 144 +#define REG_SZ 8 #define ASM_ULONG_INSN .dword #else /* CONFIG_64BIT */ #define LDREG ldw @@ -50,6 +51,7 @@ #define RP_OFFSET 20 #define FRAME_SIZE 64 #define CALLEE_REG_FRAME_SIZE 128 +#define REG_SZ 4 #define ASM_ULONG_INSN .word #endif |