x86: clean up stack overflow debug check
authorIngo Molnar <mingo@elte.hu>
Sun, 23 Nov 2008 08:02:26 +0000 (09:02 +0100)
committerIngo Molnar <mingo@elte.hu>
Sun, 23 Nov 2008 08:04:39 +0000 (09:04 +0100)
Impact: cleanup

Simplify the irq-sampled stack overflow debug check:

 - eliminate an #idef

 - use WARN_ONCE() to emit a single warning (all bets are off
   after the first such warning anyway)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/kernel/irq_64.c

Simple merge