diff options
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/procfs-smaps_rollup | 31 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-block-zram | 8 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-kernel-mm-swap | 26 |
3 files changed, 65 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/procfs-smaps_rollup b/Documentation/ABI/testing/procfs-smaps_rollup new file mode 100644 index 000000000000..0a54ed0d63c9 --- /dev/null +++ b/Documentation/ABI/testing/procfs-smaps_rollup @@ -0,0 +1,31 @@ +What: /proc/pid/smaps_rollup +Date: August 2017 +Contact: Daniel Colascione <dancol@google.com> +Description: + This file provides pre-summed memory information for a + process. The format is identical to /proc/pid/smaps, + except instead of an entry for each VMA in a process, + smaps_rollup has a single entry (tagged "[rollup]") + for which each field is the sum of the corresponding + fields from all the maps in /proc/pid/smaps. + For more details, see the procfs man page. + + Typical output looks like this: + + 00100000-ff709000 ---p 00000000 00:00 0 [rollup] + Rss: 884 kB + Pss: 385 kB + Shared_Clean: 696 kB + Shared_Dirty: 0 kB + Private_Clean: 120 kB + Private_Dirty: 68 kB + Referenced: 884 kB + Anonymous: 68 kB + LazyFree: 0 kB + AnonHugePages: 0 kB + ShmemPmdMapped: 0 kB + Shared_Hugetlb: 0 kB + Private_Hugetlb: 0 kB + Swap: 0 kB + SwapPss: 0 kB + Locked: 385 kB diff --git a/Documentation/ABI/testing/sysfs-block-zram b/Documentation/ABI/testing/sysfs-block-zram index 451b6d882b2c..c1513c756af1 100644 --- a/Documentation/ABI/testing/sysfs-block-zram +++ b/Documentation/ABI/testing/sysfs-block-zram @@ -90,3 +90,11 @@ Description: device's debugging info useful for kernel developers. Its format is not documented intentionally and may change anytime without any notice. + +What: /sys/block/zram<id>/backing_dev +Date: June 2017 +Contact: Minchan Kim <minchan@kernel.org> +Description: + The backing_dev file is read-write and set up backing + device for zram to write incompressible pages. + For using, user should enable CONFIG_ZRAM_WRITEBACK. diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-swap b/Documentation/ABI/testing/sysfs-kernel-mm-swap new file mode 100644 index 000000000000..587db52084c7 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-kernel-mm-swap @@ -0,0 +1,26 @@ +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. + +What: /sys/kernel/mm/swap/vma_ra_max_order +Date: August 2017 +Contact: Linux memory management mailing list <linux-mm@kvack.org> +Description: The max readahead size in order for VMA based swap readahead + + VMA based swap readahead algorithm will readahead at + most 1 << max_order pages for each readahead. The + real readahead size for each readahead will be scaled + according to the estimation algorithm. |