linux-kernel - [PATCH 0/4] drop test_thread

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Date:	Thu, 14 Apr 2016 21:10:10 +0300
From:	Dmitry Safonov <dsafonov@...tuozzo.com>
To:	<linux-kernel@...r.kernel.org>
CC:	<luto@...capital.net>, <tglx@...utronix.de>, <mingo@...hat.com>,
	<hpa@...or.com>, <x86@...nel.org>, <rric@...nel.org>,
	<oprofile-list@...ts.sf.net>, <0x7f454c46@...il.com>,
	Dmitry Safonov <dsafonov@...tuozzo.com>
Subject: [PATCH 0/4] drop test_thread_flag checks

As it was suggested by Andy, I'm working on TIF_IA32 flag
removal. In this first four places, it's quite trivial to
use user_64bit_mode instead of test_thread_flag().
This should fix possible problems for native applications
that change their code selector to __USER32_CS, but do
not have TIF_IA32 flag.

I still quite don't know what to do with uprobes using
ia32_compat check and will make the next patches about
ptrace & signals usage of TIF_IA32.

Dmitry Safonov (4):
  x86/events: down with test_thread_flag(TIF_IA32)
  x86/intel: down with test_thread_flag(TIF_IA32)
  x86/intel lbr: down with test_thread_flag(TIF_IA32)
  x86/oprofile: down with test_thread_flag(TIF_IA32)

 arch/x86/events/core.c        |  2 +-
 arch/x86/events/intel/core.c  |  2 +-
 arch/x86/events/intel/ds.c    |  2 +-
 arch/x86/events/intel/lbr.c   | 17 ++++++++++-------
 arch/x86/events/perf_event.h  |  2 +-
 arch/x86/oprofile/backtrace.c |  2 +-
 6 files changed, 15 insertions(+), 12 deletions(-)

-- 
2.8.0