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>
mariux64 · Nov 23, 2008 · 8d26487 · 8d26487
1 parent cffa10a
commit 8d26487
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Showing 3 changed files with 5 additions and 1 deletion.
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
@@ -36,6 +36,7 @@ config X86
 	select HAVE_ARCH_TRACEHOOK
 	select HAVE_GENERIC_DMA_COHERENT if X86_32
 	select HAVE_EFFICIENT_UNALIGNED_ACCESS
+	select USER_STACKTRACE_SUPPORT
 
 config ARCH_DEFCONFIG
 	string

diff --git a/include/linux/stacktrace.h b/include/linux/stacktrace.h
@@ -16,7 +16,7 @@ extern void save_stack_trace_tsk(struct task_struct *tsk,
 
 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)

diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
@@ -3,6 +3,9 @@
 #  select HAVE_FUNCTION_TRACER:
 #
 
+config USER_STACKTRACE_SUPPORT
+	bool
+
 config NOP_TRACER
 	bool