[PATCHv3 5/5] arm64: Trace emulation of AArch32 legacy instructions

[Catalin Marinas]

On Mon, Oct 27, 2014 at 06:40:07PM +0000, Punit Agrawal wrote:
> Introduce an event to trace the usage of emulated instructions. The
> trace event is intended to help identify and encourage the migration
> of legacy software using the emulation features.
> 
> Use this event to trace usage of swp and CP15 barrier emulation.
> 
> Cc: Steven Rostedt <rostedt at goodmis.org>
> Signed-off-by: Punit Agrawal <punit.agrawal at arm.com>
> ---
>  arch/arm64/kernel/Makefile                 |  1 +
>  arch/arm64/kernel/armv8_deprecated.c       | 19 ++++++++++++--
>  arch/arm64/kernel/trace-events-emulation.h | 40 ++++++++++++++++++++++++++++++
>  3 files changed, 58 insertions(+), 2 deletions(-)
>  create mode 100644 arch/arm64/kernel/trace-events-emulation.h
> 
> diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile
> index 5362578..1fc7abd 100644
> --- a/arch/arm64/kernel/Makefile
> +++ b/arch/arm64/kernel/Makefile
> @@ -5,6 +5,7 @@
>  CPPFLAGS_vmlinux.lds	:= -DTEXT_OFFSET=$(TEXT_OFFSET)
>  AFLAGS_head.o		:= -DTEXT_OFFSET=$(TEXT_OFFSET)
>  CFLAGS_efi-stub.o 	:= -DTEXT_OFFSET=$(TEXT_OFFSET)
> +CFLAGS_armv8_deprecated.o := -I$(src)

Why do you need this?

>  CFLAGS_REMOVE_ftrace.o = -pg
>  CFLAGS_REMOVE_insn.o = -pg
> diff --git a/arch/arm64/kernel/armv8_deprecated.c b/arch/arm64/kernel/armv8_deprecated.c
> index fded15f..d376fe2 100644
> --- a/arch/arm64/kernel/armv8_deprecated.c
> +++ b/arch/arm64/kernel/armv8_deprecated.c
> @@ -15,6 +15,9 @@
>  #include <linux/slab.h>
>  #include <linux/sysctl.h>
>  
> +#define CREATE_TRACE_POINTS
> +#include "trace-events-emulation.h"

Using double quotes should be fine for the current directory.

-- 
Catalin