diff options
| -rw-r--r-- | arch/s390/kernel/stacktrace.c | 6 | ||||
| -rw-r--r-- | arch/x86/kernel/stacktrace.c | 6 | ||||
| -rw-r--r-- | include/linux/stacktrace.h | 19 |
3 files changed, 19 insertions, 12 deletions
diff --git a/arch/s390/kernel/stacktrace.c b/arch/s390/kernel/stacktrace.c index 7f1266c24f6b..101477b3e263 100644 --- a/arch/s390/kernel/stacktrace.c +++ b/arch/s390/kernel/stacktrace.c @@ -24,12 +24,6 @@ void arch_stack_walk(stack_trace_consume_fn consume_entry, void *cookie, } } -/* - * 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. - */ int arch_stack_walk_reliable(stack_trace_consume_fn consume_entry, void *cookie, struct task_struct *task) { diff --git a/arch/x86/kernel/stacktrace.c b/arch/x86/kernel/stacktrace.c index 8627fda8d993..15b058eefc4e 100644 --- a/arch/x86/kernel/stacktrace.c +++ b/arch/x86/kernel/stacktrace.c @@ -29,12 +29,6 @@ void arch_stack_walk(stack_trace_consume_fn consume_entry, void *cookie, } } -/* - * 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. - */ int arch_stack_walk_reliable(stack_trace_consume_fn consume_entry, void *cookie, struct task_struct *task) { 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); |