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| author | Omar Sandoval <osandov@fb.com> | 2018-05-21 20:18:17 +0200 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2018-05-29 14:46:04 +0200 |
| commit | a49d9c0ae46e149a22aefa8251d07dddd5611851 (patch) | |
| tree | 178f5c501a70bd3a1fdf374391948a2f742a54ae /Documentation/admin-guide | |
| parent | docs/admin-guide/mm: add high level concepts overview (diff) | |
| download | linux-a49d9c0ae46e149a22aefa8251d07dddd5611851.tar.xz linux-a49d9c0ae46e149a22aefa8251d07dddd5611851.zip | |
Documentation: document hung_task_panic kernel parameter
This parameter has been around since commit e162b39a368f ("softlockup:
decouple hung tasks check from softlockup detection") in 2009 but was
never documented.
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 8d24270644a1..5385af53a8ca 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -1341,12 +1341,21 @@ x86-64 are 2M (when the CPU supports "pse") and 1G (when the CPU supports the "pdpe1gb" cpuinfo flag). + hung_task_panic= + [KNL] Should the hung task detector generate panics. + Format: <integer> + + A nonzero value instructs the kernel to panic when a + hung task is detected. The default value is controlled + by the CONFIG_BOOTPARAM_HUNG_TASK_PANIC build-time + option. The value selected by this boot parameter can + be changed later by the kernel.hung_task_panic sysctl. + hvc_iucv= [S390] Number of z/VM IUCV hypervisor console (HVC) terminal devices. Valid values: 0..8 hvc_iucv_allow= [S390] Comma-separated list of z/VM user IDs. If specified, z/VM IUCV HVC accepts connections from listed z/VM user IDs only. - keep_bootcon [KNL] Do not unregister boot console at start. This is only useful for debugging when something happens in the window |