Kconfig: clean up the "#if defined(arch)" list for exception-trace sysctl entry

Introduce SYSCTL_EXCEPTION_TRACE config option and selec it in the
architectures requiring support for the "exception-trace" debug_table
entry in kernel/sysctl.c.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
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>

1 files changed, 5 insertions, 0 deletions

diff --git a/init/Kconfig b/init/Kconfig
index 38bab420bd9b..4c93533da42c 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1152,6 +1152,11 @@ config SYSCTL_SYSCALL
 
           If unsure say N here.
 
+config SYSCTL_EXCEPTION_TRACE
+        bool
+        help
+          Enable support for /proc/sys/debug/exception-trace.
+
 config KALLSYMS
          bool "Load all symbols for debugging/ksymoops" if EXPERT
          default y