summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorRobert Obermeier <obbi89@gmail.com>2012-12-16 05:59:36 +0100
committerJason Wessel <jason.wessel@windriver.com>2013-03-02 08:52:18 -0600
commit3b0eb71ec9e22c6735c84f800d6523c96839efe6 (patch)
tree645a97a4242eab936ba5f7b4d9dccfda9bd6f346
parent00370b8f8dd6e3171b8202f9c5187a5f73e99497 (diff)
downloadlwn-3b0eb71ec9e22c6735c84f800d6523c96839efe6.tar.gz
lwn-3b0eb71ec9e22c6735c84f800d6523c96839efe6.zip
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 <kaos@sgi.com> (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 <obbi89@googlemail.com> Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
-rw-r--r--lib/Kconfig.kgdb18
1 files changed, 18 insertions, 0 deletions
diff --git a/lib/Kconfig.kgdb b/lib/Kconfig.kgdb
index 43cb93fa2651..960fa2ecd6e0 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