提交 8d26487f 编写于 作者: T Török Edwin 提交者: Ingo Molnar

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: NTörök Edwin <edwintorok@gmail.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
上级 cffa10ae
......@@ -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
......
......@@ -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)
......
......@@ -3,6 +3,9 @@
# select HAVE_FUNCTION_TRACER:
#
config USER_STACKTRACE_SUPPORT
bool
config NOP_TRACER
bool
......
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