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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2019-01-28 08:33:08 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2019-05-02 13:54:11 +0200 |
| commit | 78c98f9074135d3dab4e39544e0a537f92388fce (patch) | |
| tree | 6f6d96e8e0911fe2aa27ec89cca52d56d3ed6f7e /arch/s390/mm/maccess.c | |
| parent | s390/opcodes: add missing instructions to the disassembler (diff) | |
| download | linux-78c98f9074135d3dab4e39544e0a537f92388fce.tar.xz linux-78c98f9074135d3dab4e39544e0a537f92388fce.zip | |
s390/unwind: introduce stack unwind API
Rework the dump_trace() stack unwinder interface to support different
unwinding algorithms. The new interface looks like this:
struct unwind_state state;
unwind_for_each_frame(&state, task, regs, start_stack)
do_something(state.sp, state.ip, state.reliable);
The unwind_bc.c file contains the implementation for the classic
back-chain unwinder.
One positive side effect of the new code is it now handles ftraced
functions gracefully. It prints the real name of the return function
instead of 'return_to_handler'.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/mm/maccess.c')
| -rw-r--r-- | arch/s390/mm/maccess.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/mm/maccess.c b/arch/s390/mm/maccess.c index 97b3ee53852b..818deeb1ebc3 100644 --- a/arch/s390/mm/maccess.c +++ b/arch/s390/mm/maccess.c @@ -16,6 +16,7 @@ #include <linux/cpu.h> #include <asm/ctl_reg.h> #include <asm/io.h> +#include <asm/stacktrace.h> static notrace long s390_kernel_write_odd(void *dst, const void *src, size_t size) { |