diff options
Diffstat (limited to 'Documentation/admin-guide/sysctl')
| -rw-r--r-- | Documentation/admin-guide/sysctl/kernel.rst | 12 | ||||
| -rw-r--r-- | Documentation/admin-guide/sysctl/vm.rst | 3 |
2 files changed, 13 insertions, 2 deletions
diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst index 8ab042beeb76..ee6572b1edad 100644 --- a/Documentation/admin-guide/sysctl/kernel.rst +++ b/Documentation/admin-guide/sysctl/kernel.rst @@ -592,6 +592,18 @@ to the guest kernel command line (see Documentation/admin-guide/kernel-parameters.rst). +nmi_wd_lpm_factor (PPC only) +============================ + +Factor to apply to the NMI watchdog timeout (only when ``nmi_watchdog`` is +set to 1). This factor represents the percentage added to +``watchdog_thresh`` when calculating the NMI watchdog timeout during an +LPM. The soft lockup timeout is not impacted. + +A value of 0 means no change. The default value is 200 meaning the NMI +watchdog is set to 30s (based on ``watchdog_thresh`` equal to 10). + + numa_balancing ============== diff --git a/Documentation/admin-guide/sysctl/vm.rst b/Documentation/admin-guide/sysctl/vm.rst index f74f722ad702..9b833e439f09 100644 --- a/Documentation/admin-guide/sysctl/vm.rst +++ b/Documentation/admin-guide/sysctl/vm.rst @@ -569,8 +569,7 @@ This knob is not available when the size of 'struct page' (a structure defined in include/linux/mm_types.h) is not power of two (an unusual system config could result in this). -Enable (set to 1) or disable (set to 0) the feature of optimizing vmemmap pages -associated with each HugeTLB page. +Enable (set to 1) or disable (set to 0) HugeTLB Vmemmap Optimization (HVO). Once enabled, the vmemmap pages of subsequent allocation of HugeTLB pages from buddy allocator will be optimized (7 pages per 2MB HugeTLB page and 4095 pages |