ARM support for syscall tracing [LWN.net]

From:		Wade Farnsworth <wade_farnsworth@mentor.com>
To:		Russell King - ARM Linux <linux@arm.linux.org.uk>
Subject:		[PATCH v3 0/3] ARM support for syscall tracing
Date:		Mon, 5 Mar 2012 07:42:28 -0700
Message-ID:		<4F54D0D4.7070905@mentor.com>
Cc:		Steven Walter <stevenrwalter@gmail.com>, Will Deacon <will.deacon@arm.com>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>
Archive‑link:		Article

This is a rework of Steven Walter's syscall tracing patches first
posted here:

http://lists.infradead.org/pipermail/linux-arm-kernel/201...

I've rebased the patches against the current mainline master branch, as well
as implemented several changes based on feedback from Will Deacon and
Russell King.

v2: - Tested on EABI and OABI.
    - Removed an instance of the ?: operator in syscall_set_return_value()
    - Moved #define of NR_syscalls to syscall.h
    - Changed the test of NR_syscalls vs __NR_syscalls in entry-common.S
      to .ifne
v3: - Added Will Deacon's Reviewed-by line.  Code is identical to v2.

Wade Farnsworth (3):
  ARM: add support for the generic syscall.h interface
  ARM: add TRACEHOOK support
  ARM: support syscall tracing

 arch/arm/Kconfig                   |    2 +
 arch/arm/include/asm/ptrace.h      |    5 ++
 arch/arm/include/asm/syscall.h     |   97 ++++++++++++++++++++++++++++++++++++
 arch/arm/include/asm/thread_info.h |    2 +
 arch/arm/include/asm/unistd.h      |    8 +++
 arch/arm/kernel/entry-common.S     |   16 +++++-
 arch/arm/kernel/ptrace.c           |   34 +++++++------
 arch/arm/kernel/signal.c           |    2 +
 8 files changed, 149 insertions(+), 17 deletions(-)
 create mode 100644 arch/arm/include/asm/syscall.h