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/kernel/real2.S | |
| parent | parisc: Remove unnecessary barriers from spinlock.h (diff) | |
| download | linux-c8921d72e390cb6fca3fb2b0c2badfda851647eb.tar.xz linux-c8921d72e390cb6fca3fb2b0c2badfda851647eb.zip | |
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/kernel/real2.S')
| -rw-r--r-- | arch/parisc/kernel/real2.S | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/arch/parisc/kernel/real2.S b/arch/parisc/kernel/real2.S index cc9963421a19..2b16d8d6598f 100644 --- a/arch/parisc/kernel/real2.S +++ b/arch/parisc/kernel/real2.S @@ -35,12 +35,6 @@ real32_stack: real64_stack: .block 8192 -#ifdef CONFIG_64BIT -# define REG_SZ 8 -#else -# define REG_SZ 4 -#endif - #define N_SAVED_REGS 9 save_cr_space: |