diff options
| author | Dave Martin <Dave.Martin@arm.com> | 2019-07-02 14:07:28 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2019-07-22 11:44:08 +0100 |
| commit | f3dcbe67ed424f1cf92065f9ad0cc647f2b44eac (patch) | |
| tree | 6838d2a529abca0a3286e442e4b316605fc84f03 /arch/arm64/include/asm | |
| parent | 8caa6e2be72313c170f2b30e8475323526dd7ed1 (diff) | |
| download | linux-f3dcbe67ed424f1cf92065f9ad0cc647f2b44eac.tar.gz | |
arm64: stacktrace: Factor out backtrace initialisation
Some common code is required by each stacktrace user to initialise
struct stackframe before the first call to unwind_frame().
In preparation for adding to the common code, this patch factors it
out into a separate function start_backtrace(), and modifies the
stacktrace callers appropriately.
No functional change.
Signed-off-by: Dave Martin <dave.martin@arm.com>
[Mark: drop tsk argument, update more callsites]
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: James Morse <james.morse@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/include/asm')
| -rw-r--r-- | arch/arm64/include/asm/stacktrace.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/stacktrace.h b/arch/arm64/include/asm/stacktrace.h index 1e0c5a7cdce5..7fa0dfedb8e9 100644 --- a/arch/arm64/include/asm/stacktrace.h +++ b/arch/arm64/include/asm/stacktrace.h @@ -131,4 +131,14 @@ static inline bool on_accessible_stack(const struct task_struct *tsk, return false; } +static inline void start_backtrace(struct stackframe *frame, + unsigned long fp, unsigned long pc) +{ + frame->fp = fp; + frame->pc = pc; +#ifdef CONFIG_FUNCTION_GRAPH_TRACER + frame->graph = 0; +#endif +} + #endif /* __ASM_STACKTRACE_H */ |