From 3b0eb71ec9e22c6735c84f800d6523c96839efe6 Mon Sep 17 00:00:00 2001 From: Robert Obermeier Date: Sun, 16 Dec 2012 05:59:36 +0100 Subject: Fixed dead ifdef block by adding missing Kconfig option. Added missing Kconfig option KDB_CONTINUE_CATASTROPHIC which lead to a dead ifdef block in kernel/debug/kdb/kdb_main.c:73-75. The code using KDB_CONTINUE_CATASTROPHIC was originally introduced in commit '5d5314d6795f3c1c0f415348ff8c51f7de042b77' by Jason Wessel. This patchset ("kdb: core for kgdb back end (1 of 2)") added platform independent part of kdb to the linux kernel. The Kernel option however, even though it had the same options and behaviour on all supported architectures, was part of the x86 and ia64 patchset of KDB and therefore not pulled into the mainline kernel tree. I actually took the originally written Kconfig by Keith Owens (2003-06-20 according to KDB changelog) and changed it to reflect the correct behaviour, as the KDUMP patchset is not part of the kernel and the expected functionality is missing from it. Signed-off-by: Robert Obermeier Signed-off-by: Jason Wessel --- lib/Kconfig.kgdb | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'lib') diff --git a/lib/Kconfig.kgdb b/lib/Kconfig.kgdb index 43cb93fa265..960fa2ecd6e 100644 --- a/lib/Kconfig.kgdb +++ b/lib/Kconfig.kgdb @@ -79,4 +79,22 @@ config KDB_KEYBOARD help KDB can use a PS/2 type keyboard for an input device +config KDB_CONTINUE_CATASTROPHIC + int "KDB: continue after catastrophic errors" + depends on KGDB_KDB + default "0" + help + This integer controls the behaviour of kdb when the kernel gets a + catastrophic error, i.e. for a panic or oops. + When KDB is active and a catastrophic error occurs, nothing extra + will happen until you type 'go'. + CONFIG_KDB_CONTINUE_CATASTROPHIC == 0 (default). The first time + you type 'go', you will be warned by kdb. The secend time you type + 'go', KDB tries to continue. No guarantees that the + kernel is still usable in this situation. + CONFIG_KDB_CONTINUE_CATASTROPHIC == 1. KDB tries to continue. + No guarantees that the kernel is still usable in this situation. + CONFIG_KDB_CONTINUE_CATASTROPHIC == 2. KDB forces a reboot. + If you are not sure, say 0. + endif # KGDB -- cgit v1.2.3