From mboxrd@z Thu Jan 1 00:00:00 1970 From: catalin.marinas@arm.com (Catalin Marinas) Date: Wed, 5 Nov 2014 14:46:19 +0000 Subject: [PATCHv3 5/5] arm64: Trace emulation of AArch32 legacy instructions In-Reply-To: <1414435207-30240-7-git-send-email-punit.agrawal@arm.com> References: <1414435207-30240-1-git-send-email-punit.agrawal@arm.com> <1414435207-30240-7-git-send-email-punit.agrawal@arm.com> Message-ID: <20141105144619.GI32700@e104818-lin.cambridge.arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 > Signed-off-by: Punit Agrawal > --- > 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 > #include > > +#define CREATE_TRACE_POINTS > +#include "trace-events-emulation.h" Using double quotes should be fine for the current directory. -- Catalin