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Diffstat (limited to '')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-kernel-mm | 6 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-kernel-mm-hugepages | 17 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-kernel-mm-ksm | 53 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-kernel-mm-swap | 16 |
4 files changed, 92 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm b/Documentation/ABI/testing/sysfs-kernel-mm new file mode 100644 index 000000000..190d523ac --- /dev/null +++ b/Documentation/ABI/testing/sysfs-kernel-mm @@ -0,0 +1,6 @@ +What: /sys/kernel/mm +Date: July 2008 +Contact: Nishanth Aravamudan <nacc@us.ibm.com>, VM maintainers +Description: + /sys/kernel/mm/ should contain any and all VM + related information in /sys/kernel/. diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-hugepages b/Documentation/ABI/testing/sysfs-kernel-mm-hugepages new file mode 100644 index 000000000..294387e2c --- /dev/null +++ b/Documentation/ABI/testing/sysfs-kernel-mm-hugepages @@ -0,0 +1,17 @@ +What: /sys/kernel/mm/hugepages/ +Date: June 2008 +Contact: Nishanth Aravamudan <nacc@us.ibm.com>, hugetlb maintainers +Description: + /sys/kernel/mm/hugepages/ contains a number of subdirectories + of the form hugepages-<size>kB, where <size> is the page size + of the hugepages supported by the kernel/CPU combination. + + Under these directories are a number of files: + + - nr_hugepages + - nr_overcommit_hugepages + - free_hugepages + - surplus_hugepages + - resv_hugepages + + See Documentation/admin-guide/mm/hugetlbpage.rst for details. diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-ksm b/Documentation/ABI/testing/sysfs-kernel-mm-ksm new file mode 100644 index 000000000..1c9bed559 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-kernel-mm-ksm @@ -0,0 +1,53 @@ +What: /sys/kernel/mm/ksm +Date: September 2009 +KernelVersion: 2.6.32 +Contact: Linux memory management mailing list <linux-mm@kvack.org> +Description: Interface for Kernel Samepage Merging (KSM) + +What: /sys/kernel/mm/ksm/full_scans +What: /sys/kernel/mm/ksm/pages_shared +What: /sys/kernel/mm/ksm/pages_sharing +What: /sys/kernel/mm/ksm/pages_to_scan +What: /sys/kernel/mm/ksm/pages_unshared +What: /sys/kernel/mm/ksm/pages_volatile +What: /sys/kernel/mm/ksm/run +What: /sys/kernel/mm/ksm/sleep_millisecs +Date: September 2009 +Contact: Linux memory management mailing list <linux-mm@kvack.org> +Description: Kernel Samepage Merging daemon sysfs interface + + full_scans: how many times all mergeable areas have been + scanned. + + pages_shared: how many shared pages are being used. + + pages_sharing: how many more sites are sharing them i.e. how + much saved. + + pages_to_scan: how many present pages to scan before ksmd goes + to sleep. + + pages_unshared: how many pages unique but repeatedly checked + for merging. + + pages_volatile: how many pages changing too fast to be placed + in a tree. + + run: write 0 to disable ksm, read 0 while ksm is disabled. + + - write 1 to run ksm, read 1 while ksm is running. + - write 2 to disable ksm and unmerge all its pages. + + sleep_millisecs: how many milliseconds ksm should sleep between + scans. + + See Documentation/vm/ksm.rst for more information. + +What: /sys/kernel/mm/ksm/merge_across_nodes +Date: January 2013 +KernelVersion: 3.9 +Contact: Linux memory management mailing list <linux-mm@kvack.org> +Description: Control merging pages across different NUMA nodes. + + When it is set to 0 only pages from the same node are merged, + otherwise pages from all nodes can be merged together (default). diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-swap b/Documentation/ABI/testing/sysfs-kernel-mm-swap new file mode 100644 index 000000000..94672016c --- /dev/null +++ b/Documentation/ABI/testing/sysfs-kernel-mm-swap @@ -0,0 +1,16 @@ +What: /sys/kernel/mm/swap/ +Date: August 2017 +Contact: Linux memory management mailing list <linux-mm@kvack.org> +Description: Interface for swapping + +What: /sys/kernel/mm/swap/vma_ra_enabled +Date: August 2017 +Contact: Linux memory management mailing list <linux-mm@kvack.org> +Description: Enable/disable VMA based swap readahead. + + If set to true, the VMA based swap readahead algorithm + will be used for swappable anonymous pages mapped in a + VMA, and the global swap readahead algorithm will be + still used for tmpfs etc. other users. If set to + false, the global swap readahead algorithm will be + used for all swappable pages. |