path: root/ipc/mqueue.c
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authorJosh Triplett <josh@joshtriplett.org>2014-04-07 15:39:14 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-04-07 16:36:10 -0700
commitb06dd879f5db33c1d7f5ab516ea671627f99c0c9 (patch)
tree85ee4edf96b8cdc094104afe8fd0ef204df452cc /ipc/mqueue.c
parenta4b5d580e07875f9be29f62a57c67fbbdbb40ba2 (diff)
x86: always define BUG() and HAVE_ARCH_BUG, even with !CONFIG_BUG
This ensures that BUG() always has a definition that causes a trap (via an undefined instruction), and that the compiler still recognizes the code following BUG() as unreachable, avoiding warnings that would otherwise appear (such as on non-void functions that don't return a value after BUG()). In addition to saving a few bytes over the generic infinite-loop implementation, this implementation traps rather than looping, which potentially allows for better error-recovery behavior (such as by rebooting). Signed-off-by: Josh Triplett <josh@joshtriplett.org> Reported-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc/mqueue.c')
0 files changed, 0 insertions, 0 deletions