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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/kernel/machine_kexec.c | |
| parent | s390/opcodes: add missing instructions to the disassembler (diff) | |
| download | linux-dev-78c98f9074135d3dab4e39544e0a537f92388fce.tar.xz linux-dev-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/kernel/machine_kexec.c')
| -rw-r--r-- | arch/s390/kernel/machine_kexec.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c index e2ba7b7f574e..2f3a742a71a5 100644 --- a/arch/s390/kernel/machine_kexec.c +++ b/arch/s390/kernel/machine_kexec.c @@ -27,6 +27,7 @@ #include <asm/cacheflush.h> #include <asm/os_info.h> #include <asm/set_memory.h> +#include <asm/stacktrace.h> #include <asm/switch_to.h> #include <asm/nmi.h> |