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| author | Hauke Mehrtens <hauke@hauke-m.de> | 2021-09-12 12:56:48 +0200 |
|---|---|---|
| committer | Hauke Mehrtens <hauke@hauke-m.de> | 2021-09-13 13:04:21 +0200 |
| commit | d27f6e2c5d2a2315cc8fe684d117c80aa9984ca8 (patch) | |
| tree | 850d7a3ea0aca241f3ece57c6038a386c795aa5c | |
| parent | 0470159552641c2b11ccc1b0fcfcb4ea08f2c6ab (diff) | |
| download | upstream-d27f6e2c5d2a2315cc8fe684d117c80aa9984ca8.tar.gz upstream-d27f6e2c5d2a2315cc8fe684d117c80aa9984ca8.tar.bz2 upstream-d27f6e2c5d2a2315cc8fe684d117c80aa9984ca8.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>
| -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 |