diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/stacktrace.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/stacktrace.h b/include/linux/stacktrace.h index 50e2df30b0aa..9edecb494e9e 100644 --- a/include/linux/stacktrace.h +++ b/include/linux/stacktrace.h @@ -52,8 +52,27 @@ typedef bool (*stack_trace_consume_fn)(void *cookie, unsigned long addr); */ void arch_stack_walk(stack_trace_consume_fn consume_entry, void *cookie, struct task_struct *task, struct pt_regs *regs); + +/** + * arch_stack_walk_reliable - Architecture specific function to walk the + * stack reliably + * + * @consume_entry: Callback which is invoked by the architecture code for + * each entry. + * @cookie: Caller supplied pointer which is handed back to + * @consume_entry + * @task: Pointer to a task struct, can be NULL + * + * This function returns an error if it detects any unreliable + * features of the stack. Otherwise it guarantees that the stack + * trace is reliable. + * + * If the task is not 'current', the caller *must* ensure the task is + * inactive and its stack is pinned. + */ int arch_stack_walk_reliable(stack_trace_consume_fn consume_entry, void *cookie, struct task_struct *task); + void arch_stack_walk_user(stack_trace_consume_fn consume_entry, void *cookie, const struct pt_regs *regs); |