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authorMister Oyster <oysterized@gmail.com>2017-07-03 12:14:46 +0200
committerMister Oyster <oysterized@gmail.com>2017-07-04 12:11:29 +0200
commitaf79a782f868c860793e76ed5ec1ae5bb4af4187 (patch)
treee945bb42c4077c26bd12f589f9f0f37d39207b03 /Documentation
parentaefc1dfa10a78d3bc1c6bb40df9c44d9ce5c0823 (diff)
uksm: remove Mtk aksm & uksm (because its fugly)
Revert "KSM: mediatek: implement Adaptive KSM" Revert "mm: uksm: fix maybe-uninitialized warning" Revert "UKSM: Add Governors for Higher CPU usage (HighCPU) for more merging, and low cpu usage (Battery) for less battery drain" Revert "uksm: use deferrable timer" Revert "mm: limit UKSM sleep time instead of failing" Revert "uksm: Fix warning" Revert "uksm: clean up and remove some (no)inlines" Revert "uksm: modify ema logic and tidy up" Revert "uksm: enhancements and cleanups" Revert "uksm: squashed fixups" Revert "UKSM: cast variable as const" Revert "UKSM: remove U64_MAX definition" Revert "add uksm 0.1.2.3 for v3.10 .ge.46.patch"
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/vm/00-INDEX2
-rw-r--r--Documentation/vm/uksm.txt58
2 files changed, 0 insertions, 60 deletions
diff --git a/Documentation/vm/00-INDEX b/Documentation/vm/00-INDEX
index 714187603..5481c8ba3 100644
--- a/Documentation/vm/00-INDEX
+++ b/Documentation/vm/00-INDEX
@@ -14,8 +14,6 @@ hwpoison.txt
- explains what hwpoison is
ksm.txt
- how to use the Kernel Samepage Merging feature.
-uksm.txt
- - Introduction to Ultra KSM
locking
- info on how locking and synchronization is done in the Linux vm code.
map_hugetlb.c
diff --git a/Documentation/vm/uksm.txt b/Documentation/vm/uksm.txt
deleted file mode 100644
index 08bd6456c..000000000
--- a/Documentation/vm/uksm.txt
+++ /dev/null
@@ -1,58 +0,0 @@
-The Ultra Kernel Samepage Merging feature
-----------------------------------------------
-/*
- * Ultra KSM. Copyright (C) 2011-2012 Nai Xia
- *
- * This is an improvement upon KSM. Some basic data structures and routines
- * are borrowed from ksm.c .
- *
- * Its new features:
- * 1. Full system scan:
- * It automatically scans all user processes' anonymous VMAs. Kernel-user
- * interaction to submit a memory area to KSM is no longer needed.
- *
- * 2. Rich area detection:
- * It automatically detects rich areas containing abundant duplicated
- * pages based. Rich areas are given a full scan speed. Poor areas are
- * sampled at a reasonable speed with very low CPU consumption.
- *
- * 3. Ultra Per-page scan speed improvement:
- * A new hash algorithm is proposed. As a result, on a machine with
- * Core(TM)2 Quad Q9300 CPU in 32-bit mode and 800MHZ DDR2 main memory, it
- * can scan memory areas that does not contain duplicated pages at speed of
- * 627MB/sec ~ 2445MB/sec and can merge duplicated areas at speed of
- * 477MB/sec ~ 923MB/sec.
- *
- * 4. Thrashing area avoidance:
- * Thrashing area(an VMA that has frequent Ksm page break-out) can be
- * filtered out. My benchmark shows it's more efficient than KSM's per-page
- * hash value based volatile page detection.
- *
- *
- * 5. Misc changes upon KSM:
- * * It has a fully x86-opitmized memcmp dedicated for 4-byte-aligned page
- * comparison. It's much faster than default C version on x86.
- * * rmap_item now has an struct *page member to loosely cache a
- * address-->page mapping, which reduces too much time-costly
- * follow_page().
- * * The VMA creation/exit procedures are hooked to let the Ultra KSM know.
- * * try_to_merge_two_pages() now can revert a pte if it fails. No break_
- * ksm is needed for this case.
- *
- * 6. Full Zero Page consideration(contributed by Figo Zhang)
- * Now uksmd consider full zero pages as special pages and merge them to an
- * special unswappable uksm zero page.
- */
-
-ChangeLog:
-
-2012-05-05 The creation of this Doc
-2012-05-08 UKSM 0.1.1.1 libc crash bug fix, api clean up, doc clean up.
-2012-05-28 UKSM 0.1.1.2 bug fix release
-2012-06-26 UKSM 0.1.2-beta1 first beta release for 0.1.2
-2012-07-2 UKSM 0.1.2-beta2
-2012-07-10 UKSM 0.1.2-beta3
-2012-07-26 UKSM 0.1.2 Fine grained speed control, more scan optimization.
-2012-10-13 UKSM 0.1.2.1 Bug fixes.
-2012-12-31 UKSM 0.1.2.2 Minor bug fixes
-2014-07-02 UKSM 0.1.2.3 Fix a " __this_cpu_read() in preemptible bug"