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Date: Wed, 14 Oct 2015 00:24:24 +0900 From: Jungseok Lee <jungseoklee85@...il.com> To: AKASHI Takahiro <takahiro.akashi@...aro.org> Cc: catalin.marinas@....com, will.deacon@....com, rostedt@...dmis.org, olof@...om.net, broonie@...nel.org, david.griego@...aro.org, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH v3 3/7] arm64: ftrace: fix a stack tracer's output under function graph tracer On Oct 8, 2015, at 7:01 PM, AKASHI Takahiro wrote: Hi Akashi, > Function graph tracer modifies a return address (LR) in a stack frame > to hook a function return. This will result in many useless entries > (return_to_handler) showing up in a stack tracer's output. > > This patch replaces such entries with originals values preserved in > current->ret_stack[]. > > Signed-off-by: AKASHI Takahiro <takahiro.akashi@...aro.org> The following diff should be folded into this patch, not [7/7] one, to address build breakage. ----8<---- diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c index 407991b..7126d4d 100644 --- a/arch/arm64/kernel/stacktrace.c +++ b/arch/arm64/kernel/stacktrace.c @@ -17,6 +17,7 @@ */ #include <linux/kernel.h> #include <linux/export.h> +#include <linux/ftrace.h> #include <linux/sched.h> #include <linux/stacktrace.h> ----8<---- Best Regards Jungseok Lee -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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