meta-agl-bsp/meta-intel/recipes-kernel/lttng/lttng-modules/BUILD_RUNTIME_BUG_ON-vs-gcc7.patch

   1 From ab07574ef90fa510f293c37897d577066a88fe0d Mon Sep 17 00:00:00 2001
   2 From: Nathan Lynch <nathan_lynch@mentor.com>
   3 Date: Tue, 25 Apr 2017 16:26:57 -0500
   4 Subject: [PATCH] BUILD_RUNTIME_BUG_ON vs gcc7
   5
   6 Avoid using LTTng's BUILD_RUNTIME_BUG_ON macro, as it appears to run
   7 into a similar problem as Linux experienced with ilog2.
   8
   9 See:
  10 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=474c90156c8dcc2fa815e6716cc9394d7930cb9c
  11 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72785
  12
  13 Upstream-Status: Pending
  14 Signed-off-by: Nathan Lynch <nathan_lynch@mentor.com>
  15 ---
  16  lib/align.h | 4 ++--
  17  1 file changed, 2 insertions(+), 2 deletions(-)
  18
  19 diff --git a/lib/align.h b/lib/align.h
  20 index 5b91ae87410b..5e134cd485fe 100644
  21 --- a/lib/align.h
  22 +++ b/lib/align.h
  23 @@ -48,7 +48,7 @@
  24   */
  25  #define offset_align(align_drift, alignment)                                  \
  26         ({                                                                     \
  27 -               BUILD_RUNTIME_BUG_ON((alignment) == 0                          \
  28 +               BUG_ON((alignment) == 0                                        \
  29                                    || ((alignment) & ((alignment) - 1)));      \
  30                 (((alignment) - (align_drift)) & ((alignment) - 1));           \
  31         })
  32 @@ -63,7 +63,7 @@
  33   */
  34  #define offset_align_floor(align_drift, alignment)                            \
  35         ({                                                                     \
  36 -               BUILD_RUNTIME_BUG_ON((alignment) == 0                          \
  37 +               BUG_ON((alignment) == 0                                        \
  38                                    || ((alignment) & ((alignment) - 1)));      \
  39                 (((align_drift) - (alignment)) & ((alignment) - 1));           \
  40         })
  41 --
  42 2.9.3
  43