patches/kernel/0062-x86-fpu-debug-Remove-unused-x86_fpu_state-and-x86_fp.patch

   1 From bc21c74b922871588bf6626bff34fa084ed60d71 Mon Sep 17 00:00:00 2001
   2 From: "Steven Rostedt (VMware)" <rostedt@goodmis.org>
   3 Date: Thu, 12 Oct 2017 18:06:19 -0400
   4 Subject: [PATCH 062/242] x86/fpu/debug: Remove unused 'x86_fpu_state' and
   5  'x86_fpu_deactivate_state' tracepoints
   6 MIME-Version: 1.0
   7 Content-Type: text/plain; charset=UTF-8
   8 Content-Transfer-Encoding: 8bit
   9
  10 CVE-2017-5754
  11
  12 Commit:
  13
  14   d1898b733619 ("x86/fpu: Add tracepoints to dump FPU state at key points")
  15
  16 ... added the 'x86_fpu_state' and 'x86_fpu_deactivate_state' trace points,
  17 but never used them. Today they are still not used. As they take up
  18 and waste memory, remove them.
  19
  20 Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
  21 Cc: Dave Hansen <dave.hansen@linux.intel.com>
  22 Cc: Linus Torvalds <torvalds@linux-foundation.org>
  23 Cc: Peter Zijlstra <peterz@infradead.org>
  24 Cc: Thomas Gleixner <tglx@linutronix.de>
  25 Link: http://lkml.kernel.org/r/20171012180619.670b68b6@gandalf.local.home
  26 Signed-off-by: Ingo Molnar <mingo@kernel.org>
  27 (cherry picked from commit 127a1bea40f7f2a36bc7207ea4d51bb6b4e936fa)
  28 Signed-off-by: Andy Whitcroft <apw@canonical.com>
  29 Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
  30 (cherry picked from commit c7c367ddb6ffb6af2cfee287960e97c4aefc6548)
  31 Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
  32 ---
  33  arch/x86/include/asm/trace/fpu.h | 10 ----------
  34  1 file changed, 10 deletions(-)
  35
  36 diff --git a/arch/x86/include/asm/trace/fpu.h b/arch/x86/include/asm/trace/fpu.h
  37 index 342e59789fcd..fed7d9ecae60 100644
  38 --- a/arch/x86/include/asm/trace/fpu.h
  39 +++ b/arch/x86/include/asm/trace/fpu.h
  40 @@ -36,11 +36,6 @@ DECLARE_EVENT_CLASS(x86_fpu,
  41         )
  42  );
  43
  44 -DEFINE_EVENT(x86_fpu, x86_fpu_state,
  45 -       TP_PROTO(struct fpu *fpu),
  46 -       TP_ARGS(fpu)
  47 -);
  48 -
  49  DEFINE_EVENT(x86_fpu, x86_fpu_before_save,
  50         TP_PROTO(struct fpu *fpu),
  51         TP_ARGS(fpu)
  52 @@ -76,11 +71,6 @@ DEFINE_EVENT(x86_fpu, x86_fpu_activate_state,
  53         TP_ARGS(fpu)
  54  );
  55
  56 -DEFINE_EVENT(x86_fpu, x86_fpu_deactivate_state,
  57 -       TP_PROTO(struct fpu *fpu),
  58 -       TP_ARGS(fpu)
  59 -);
  60 -
  61  DEFINE_EVENT(x86_fpu, x86_fpu_init_state,
  62         TP_PROTO(struct fpu *fpu),
  63         TP_ARGS(fpu)
  64 --
  65 2.14.2
  66