The patch titled
Subject: lib/Kconfig.debug: Debug Lockups and Hangs: keep SOFTLOCKUP options together
has been added to the -mm tree. Its filename is
lib-kconfigdebug-debug-lockups-and-hangs-keep-softlockup-options-together.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/lib-kconfigdebug-debug-lockups-and-hangs-keep-softlockup-options-together.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/lib-kconfigdebug-debug-lockups-and-hangs-keep-softlockup-options-together.patch
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------------------------------------------------------
From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Subject: lib/Kconfig.debug: Debug Lockups and Hangs: keep SOFTLOCKUP options together
Keep all of the SOFTLOCKUP kconfig symbols together (instead of injecting
the HARDLOCKUP symbols in the midst of them) so that the config tools
display them with their dependencies.
Tested with 'make {menuconfig/nconfig/gconfig/xconfig}'.
Link: http://lkml.kernel.org/r/6be2d9ed-4656-5b94-460d-7f051e2c7570@xxxxxxxxxxxxx
Fixes: 05a4a9527931 ("kernel/watchdog: split up config options")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Nicholas Piggin <npiggin@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/Kconfig.debug | 48 ++++++++++++++++++++++----------------------
1 file changed, 24 insertions(+), 24 deletions(-)
diff -puN lib/Kconfig.debug~lib-kconfigdebug-debug-lockups-and-hangs-keep-softlockup-options-together lib/Kconfig.debug
--- a/lib/Kconfig.debug~lib-kconfigdebug-debug-lockups-and-hangs-keep-softlockup-options-together
+++ a/lib/Kconfig.debug
@@ -803,6 +803,30 @@ config SOFTLOCKUP_DETECTOR
chance to run. The current stack trace is displayed upon
detection and the system will stay locked up.
+config BOOTPARAM_SOFTLOCKUP_PANIC
+ bool "Panic (Reboot) On Soft Lockups"
+ depends on SOFTLOCKUP_DETECTOR
+ help
+ Say Y here to enable the kernel to panic on "soft lockups",
+ which are bugs that cause the kernel to loop in kernel
+ mode for more than 20 seconds (configurable using the watchdog_thresh
+ sysctl), without giving other tasks a chance to run.
+
+ The panic can be used in combination with panic_timeout,
+ to cause the system to reboot automatically after a
+ lockup has been detected. This feature is useful for
+ high-availability systems that have uptime guarantees and
+ where a lockup must be resolved ASAP.
+
+ Say N if unsure.
+
+config BOOTPARAM_SOFTLOCKUP_PANIC_VALUE
+ int
+ depends on SOFTLOCKUP_DETECTOR
+ range 0 1
+ default 0 if !BOOTPARAM_SOFTLOCKUP_PANIC
+ default 1 if BOOTPARAM_SOFTLOCKUP_PANIC
+
config HARDLOCKUP_DETECTOR_PERF
bool
select SOFTLOCKUP_DETECTOR
@@ -852,30 +876,6 @@ config BOOTPARAM_HARDLOCKUP_PANIC_VALUE
default 0 if !BOOTPARAM_HARDLOCKUP_PANIC
default 1 if BOOTPARAM_HARDLOCKUP_PANIC
-config BOOTPARAM_SOFTLOCKUP_PANIC
- bool "Panic (Reboot) On Soft Lockups"
- depends on SOFTLOCKUP_DETECTOR
- help
- Say Y here to enable the kernel to panic on "soft lockups",
- which are bugs that cause the kernel to loop in kernel
- mode for more than 20 seconds (configurable using the watchdog_thresh
- sysctl), without giving other tasks a chance to run.
-
- The panic can be used in combination with panic_timeout,
- to cause the system to reboot automatically after a
- lockup has been detected. This feature is useful for
- high-availability systems that have uptime guarantees and
- where a lockup must be resolved ASAP.
-
- Say N if unsure.
-
-config BOOTPARAM_SOFTLOCKUP_PANIC_VALUE
- int
- depends on SOFTLOCKUP_DETECTOR
- range 0 1
- default 0 if !BOOTPARAM_SOFTLOCKUP_PANIC
- default 1 if BOOTPARAM_SOFTLOCKUP_PANIC
-
config DETECT_HUNG_TASK
bool "Detect Hung Tasks"
depends on DEBUG_KERNEL
_
Patches currently in -mm which might be from rdunlap@xxxxxxxxxxxxx are
mm-swap_slots-use-conditional-compilation-for-swap_slotsc.patch
headers-untangle-kmemleakh-from-mmh.patch
lib-kconfigdebug-debug-lockups-and-hangs-keep-softlockup-options-together.patch
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