linux-kernel - [PATCH] arm: ftrace: Adds support for ftrace operations

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Message-Id: <1415372352-15664-1-git-send-email-jjhiblot@traphandler.com>
Date:	Fri,  7 Nov 2014 15:59:11 +0100
From:	Jean-Jacques Hiblot <jjhiblot@...phandler.com>
To:	jslaby@...e.cz, linux@....linux.org.uk, rostedt@...dmis.org,
	mingo@...hat.com, nsekhar@...com, stefano.stabellini@...citrix.com,
	christoffer.dall@...aro.org
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Jean-Jacques Hiblot <jjhiblot@...phandler.com>
Subject: [PATCH] arm: ftrace: Adds support for ftrace operations

Hi all,

This patch adds support for ftrace operations on the ARM architecture.
This support is needed by kgraft and possibly other ftrace-based tools.
My goal is to have kgraft working on ARM and aarch64.

I tested this patch with a toy implementation of kgraft for ARM and basic
usage of function and function_graph tracers
It doesn't show any problem with the ftrace selftests and the tests found
today in branch ftrace/testing-mystuff of linux-trace repository
(git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git)

Jean-Jacques Hiblot (1):
  arm: ftrace: Adds support for ftrace operations

 arch/arm/Kconfig               |  2 ++
 arch/arm/include/asm/ftrace.h  |  3 ++
 arch/arm/kernel/entry-common.S | 68 +++++++++++++++++++++++++++++++++++++++++-
 arch/arm/kernel/ftrace.c       | 34 +++++++++++++++++++++
 4 files changed, 106 insertions(+), 1 deletion(-)

-- 
2.1.3

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