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| author | Stephen Rothwell <sfr@canb.auug.org.au> | 2018-08-15 18:04:33 +1000 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2018-08-15 18:04:35 +1000 |
| commit | bd8c3a9995f70b2dbd577778f95d10c79927bc7a (patch) | |
| tree | 8ae96ad2247d3d1bac2e14668c99328e1aee4a0f /Documentation/sysctl/kernel.txt | |
| parent | 21ee6251550c8eca6c5e7fb536cdb6a46d9ad42f (diff) | |
| parent | f900cbae36e93504e3f9ff327f067357e120dff3 (diff) | |
| download | linux-next-bd8c3a9995f70b2dbd577778f95d10c79927bc7a.tar.gz | |
Merge branch 'akpm-current/current'
Diffstat (limited to 'Documentation/sysctl/kernel.txt')
| -rw-r--r-- | Documentation/sysctl/kernel.txt | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt index ffd8701232ce..1b8775298cf7 100644 --- a/Documentation/sysctl/kernel.txt +++ b/Documentation/sysctl/kernel.txt @@ -38,6 +38,7 @@ show up in /proc/sys/kernel: - hung_task_panic - hung_task_check_count - hung_task_timeout_secs +- hung_task_check_interval_secs - hung_task_warnings - hyperv_record_panic_msg - kexec_load_disabled @@ -356,7 +357,7 @@ This file shows up if CONFIG_DETECT_HUNG_TASK is enabled. hung_task_timeout_secs: -Check interval. When a task in D state did not get scheduled +When a task in D state did not get scheduled for more than this value report a warning. This file shows up if CONFIG_DETECT_HUNG_TASK is enabled. @@ -365,6 +366,18 @@ Possible values to set are in range {0..LONG_MAX/HZ}. ============================================================== +hung_task_check_interval_secs: + +Hung task check interval. If hung task checking is enabled +(see hung_task_timeout_secs), the check is done every +hung_task_check_interval_secs seconds. +This file shows up if CONFIG_DETECT_HUNG_TASK is enabled. + +0 (default): means use hung_task_timeout_secs as checking interval. +Possible values to set are in range {0..LONG_MAX/HZ}. + +============================================================== + hung_task_warnings: The maximum number of warnings to report. During a check interval @@ -452,7 +465,8 @@ Notes: 1) kernel doesn't guarantee, that new object will have desired id. So, it's up to userspace, how to handle an object with "wrong" id. 2) Toggle with non-default value will be set back to -1 by kernel after -successful IPC object allocation. +successful IPC object allocation. If an IPC object allocation syscall +fails, it is undefined if the value remains unmodified or is reset to -1. ============================================================== |