diff options
| author | Hauke Mehrtens <hauke@hauke-m.de> | 2021-09-12 12:56:48 +0200 |
|---|---|---|
| committer | Hauke Mehrtens <hauke@hauke-m.de> | 2021-09-13 18:48:55 +0200 |
| commit | f11cdd30065b241e51283a205dfc951d677e183b (patch) | |
| tree | 3510f9a3e27d3b88ff7e0b647ae6edca1e953aad | |
| parent | 0e29e05deed1edd3884ca888ae7e1b549c84bfd0 (diff) | |
| download | upstream-f11cdd30065b241e51283a205dfc951d677e183b.tar.gz upstream-f11cdd30065b241e51283a205dfc951d677e183b.tar.bz2 upstream-f11cdd30065b241e51283a205dfc951d677e183b.zip | |
build: Replace KERNEL_LOCKUP_DETECTOR with KERNEL_SOFTLOCKUP_DETECTOR
The LOCKUP_DETECTOR configuration option split into the
SOFTLOCKUP_DETECTOR and HARDLOCKUP_DETECTOR configuration option some
time ago. The HARDLOCKUP_DETECTOR option is only working on some
architectures, but SOFTLOCKUP_DETECTOR should work everywhere. Replace
KERNEL_LOCKUP_DETECTOR with KERNEL_SOFTLOCKUP_DETECTOR.
LOCKUP_DETECTOR will be selected by SOFTLOCKUP_DETECTOR automatically.
Fixes: b951f53fbae3 ("build: Add additional kernel debug options")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
(cherry picked from commit d27f6e2c5d2a2315cc8fe684d117c80aa9984ca8)
| -rw-r--r-- | config/Config-kernel.in | 20 |
1 files changed, 4 insertions, 16 deletions
diff --git a/config/Config-kernel.in b/config/Config-kernel.in index f71114b5da..d4648a5064 100644 --- a/config/Config-kernel.in +++ b/config/Config-kernel.in @@ -436,34 +436,22 @@ config KERNEL_PROVE_LOCKING select KERNEL_DEBUG_KERNEL default n -config KERNEL_LOCKUP_DETECTOR - bool "Compile the kernel with detect Hard and Soft Lockups" +config KERNEL_SOFTLOCKUP_DETECTOR + bool "Compile the kernel with detect Soft Lockups" depends on KERNEL_DEBUG_KERNEL help Say Y here to enable the kernel to act as a watchdog to detect - hard and soft lockups. + soft lockups. Softlockups are bugs that cause the kernel to loop in kernel mode for more than 20 seconds, without giving other tasks a chance to run. The current stack trace is displayed upon detection and the system will stay locked up. - Hardlockups are bugs that cause the CPU to loop in kernel mode - for more than 10 seconds, without letting other interrupts have a - chance to run. The current stack trace is displayed upon detection - and the system will stay locked up. - - The overhead should be minimal. A periodic hrtimer runs to - generate interrupts and kick the watchdog task every 4 seconds. - An NMI is generated every 10 seconds or so to check for hardlockups. - - The frequency of hrtimer and NMI events and the soft and hard lockup - thresholds can be controlled through the sysctl watchdog_thresh. - config KERNEL_DETECT_HUNG_TASK bool "Compile the kernel with detect Hung Tasks" depends on KERNEL_DEBUG_KERNEL - default KERNEL_LOCKUP_DETECTOR + default KERNEL_SOFTLOCKUP_DETECTOR help Say Y here to enable the kernel to detect "hung tasks", which are bugs that cause the task to be stuck in |