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| author | Sergey Senozhatsky <senozhatsky@chromium.org> | 2023-11-15 11:42:12 +0900 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-12-10 16:51:40 -0800 |
| commit | a7a0350583ba51d8cde6180bb51d704b89a3b29e (patch) | |
| tree | bed2a38e17a2e1c3f78e97efe5273dd02be4c079 /Documentation/admin-guide | |
| parent | 1b5c65b64cd417c801945b26a2a50c4d4eefaec8 (diff) | |
| download | linux-a7a0350583ba51d8cde6180bb51d704b89a3b29e.tar.gz | |
zram: split memory-tracking and ac-time tracking
ZRAM_MEMORY_TRACKING enables two features:
- per-entry ac-time tracking
- debugfs interface
The latter one is the reason why memory-tracking depends on DEBUG_FS,
while the former one is used far beyond debugging these days. Namely
ac-time is used for fine grained writeback of idle entries (pages).
Move ac-time tracking under its own config option so that it can be
enabled (along with writeback) on systems without DEBUG_FS.
[senozhatsky@chromium.org: ifdef fixup, per Dmytro]
Link: https://lkml.kernel.org/r/20231117013543.540280-1-senozhatsky@chromium.org
Link: https://lkml.kernel.org/r/20231115024223.4133148-1-senozhatsky@chromium.org
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Dmytro Maluka <dmaluka@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/blockdev/zram.rst | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/admin-guide/blockdev/zram.rst b/Documentation/admin-guide/blockdev/zram.rst index e4551579cb128..ee2b0030d4168 100644 --- a/Documentation/admin-guide/blockdev/zram.rst +++ b/Documentation/admin-guide/blockdev/zram.rst @@ -328,7 +328,7 @@ as idle:: From now on, any pages on zram are idle pages. The idle mark will be removed until someone requests access of the block. IOW, unless there is access request, those pages are still idle pages. -Additionally, when CONFIG_ZRAM_MEMORY_TRACKING is enabled pages can be +Additionally, when CONFIG_ZRAM_TRACK_ENTRY_ACTIME is enabled pages can be marked as idle based on how long (in seconds) it's been since they were last accessed:: |