tracing/stack-tracer: introduce CONFIG_USER_STACKTRACE_SUPPORT
Impact: cleanup
User stack tracing is just implemented for x86, but it is not x86 specific.
Introduce a generic config flag, that is currently enabled only for x86.
When other arches implement it, they will have to
SELECT USER_STACKTRACE_SUPPORT.
Signed-off-by: Török Edwin <edwintorok@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/linux/stacktrace.h b/include/linux/stacktrace.h
index fd42d68..1a8cecc 100644
--- a/include/linux/stacktrace.h
+++ b/include/linux/stacktrace.h
@@ -16,7 +16,7 @@
extern void print_stack_trace(struct stack_trace *trace, int spaces);
-#ifdef CONFIG_X86
+#ifdef CONFIG_USER_STACKTRACE_SUPPORT
extern void save_stack_trace_user(struct stack_trace *trace);
#else
# define save_stack_trace_user(trace) do { } while (0)