This patch makes it easy to add syscall related hooks, including ftrace,
audit and seccomp, in syscall_trace() later.
Those features will be implemented in separate patchsets, but it's safe to
check for all TIF_* now because they can not be turned on anyway.

Changes v1 -> v2:
* added a guard against TIF_SYSCALL_TRACE at tracehook_report_syscall_*()
* renamed _TIF_WORK_SYSCALL to _TIF_SYSCALL_WORK

AKASHI Takahiro (1):
  arm64: make a single hook to syscall_trace() for all syscall features

 arch/arm64/include/asm/thread_info.h |   13 ++++++++++
 arch/arm64/kernel/entry.S            |    5 ++--
 arch/arm64/kernel/ptrace.c           |   45 +++++++++++++++++-----------------
 3 files changed, 38 insertions(+), 25 deletions(-)

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1.7.9.5