On Thu, Jan 16, 2020 at 9:39 AM Will Deacon [off-list ref] wrote:

On Fri, Dec 06, 2019 at 02:13:44PM -0800, Sami Tolvanen wrote:

quoted

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index b1b4476ddb83..49e5f94ff4af 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig

@@ -149,7 +149,7 @@ config ARM64
      select HAVE_FTRACE_MCOUNT_RECORD
      select HAVE_FUNCTION_TRACER
      select HAVE_FUNCTION_ERROR_INJECTION
-     select HAVE_FUNCTION_GRAPH_TRACER
+     select HAVE_FUNCTION_GRAPH_TRACER if !SHADOW_CALL_STACK
      select HAVE_GCC_PLUGINS
      select HAVE_HW_BREAKPOINT if PERF_EVENTS
      select HAVE_IRQ_TIME_ACCOUNTING

I think this is the wrong way around, as we support the graph tracer
today and so I think SHADOW_CALL_STACK should depend on !GRAPH_TRACER
and possibly even EXPERT until this is resolved.

Sure, sounds reasonable. I'll change this in the next version.

Sami

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