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36 Commits

Author SHA1 Message Date
wangbowen6
70083168f1 mm: support custom the mm alignment and default to be 8 
Signed-off-by: wangbowen6 <wangbowen6@xiaomi.com>
 2023-03-06 11:10:36 +08:00
anjiahao
267976e5a8 mempool:fix bug for realloc when shortage of memory 
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
 2023-02-13 01:57:41 +08:00
Gustavo Henrique Nihei
e6b204f438 nuttx: Use MIN/MAX definitions from "sys/param.h" 
Signed-off-by: Gustavo Henrique Nihei <gustavo.nihei@espressif.com>
 2023-02-01 23:47:44 +08:00
wangbowen6
b1948a1631 mm: move preceding to previous free node to reduce the overhead 
Signed-off-by: wangbowen6 <wangbowen6@xiaomi.com>
 2023-02-01 11:14:02 +08:00
wangbowen6
723c6e52e2 mm: reorder the preceding and size and move MM_ALLOC_BIT to size 
Signed-off-by: wangbowen6 <wangbowen6@xiaomi.com>
 2023-02-01 11:14:02 +08:00
anjiahao
632ed0d3a4 Optimize multipe mempool memory space usage 
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
 2023-01-18 14:12:45 +08:00
anjiahao
6b530fceae mempool:change mempool_multiple way of initialization 
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
 2023-01-18 14:12:45 +08:00
anjiahao
bc30b294aa mm:add heap args to mm_malloc_size 
use malloc_size inside of where used mm_malloc_size

Signed-off-by: anjiahao <anjiahao@xiaomi.com>
Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
 2023-01-17 21:57:37 +08:00
dongjiuzhu1
c82f44c4f3 mm/mm_heap: add mempool to optimize small block performance 
There are many small memory block in NuttX system, eg: struct tcb_s,
struct inode, etc, and several disadvantages about them:
1.Their frequent allocate and free cause the system memory fragmentation.
2.Since each memory block has an overhead, the utilization of small memory
blocks is relatively low, which will cause memory waste.

So we can use mempool to alloc smallo block, to improve alloc speed
and utilization, to reduce fragmentation.

Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
 2023-01-16 20:32:17 +08:00
Xiang Xiao
4cc13c19c6 Revert "mm: Check the function result with suitable macro." 
This reverts commit 460d94729a.
 2022-11-07 10:01:52 +01:00
dongjiuzhu1
579e47347e mm/mm_heap: define MM_MASK_BIT as significant bits mask 
using MM_MASK_BIT to expand different bits of preceding field to store the
block status.

Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
 2022-10-29 00:12:02 +08:00
anjiahao
d1d46335df Replace nxsem API when used as a lock with nxmutex API 
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2022-10-17 15:59:46 +09:00
xiangdong6
460d94729a mm: Check the function result with suitable macro. 
The return value of function mm_takesemaphore will never below
than zero, DEBUGVERIFY make no effect to check it, use DEBUGASSERT
instead.

Signed-off-by: xiangdong6 <xiangdong6@xiaomi.com>
 2022-09-05 21:11:01 +08:00
chao.an
5db0ab1e6a mm_heap/backtrace: move MM_ADD_BACKTRACE out of heap lock 
move MM_ADD_BACKTRACE out of heap lock to improve the performance

Signed-off-by: chao.an <anchao@xiaomi.com>
 2022-08-02 01:44:48 +08:00
Gustavo Henrique Nihei
ea0f60cc24 mm: Convert DEBUGASSERT(false) into more intuitive DEBUGPANIC() 
Signed-off-by: Gustavo Henrique Nihei <gustavo.nihei@espressif.com>
 2022-07-14 12:08:45 +08:00
Jiuzhu Dong
709207b8d3 mm/memdump: dynamic turn on backtrace in heap when enable DEBUG_MM 
default turn off.
turn on: echo on > /proc/memdump
turn off: echo off > proc/memdump

Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
 2022-03-27 13:21:48 +08:00
Jiuzhu Dong
2dcc4a359d mm/dump: add pid and backtrace for every memory node 
usage:
echo <pid/used/free> trace > /proc/memdump
echo used > /proc/memdump //output all used memory info with backtrace
echo free > /proc/memdump //output all free memory info
echo 22 > /proc/memdump //output used memory info for task pid is 22 with backtrace

Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
 2022-02-26 14:32:42 +08:00
chenwei23
39cdd99d77 mm: Support the kernel address sanitizer 
Signed-off-by: chenwei23 <chenwei23@xiaomi.com>
 2021-11-02 13:32:47 -03:00
Xiang Xiao
5cb6b042aa mm/heap: Simplify the condition check in mm_realloc 
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2021-11-02 13:32:47 -03:00
ligd
3615592e82 mm: fix realloc overwrite memcpy when use a new block 
Signed-off-by: ligd <liguiding1@xiaomi.com>
 2021-11-01 21:27:52 -05:00
Xiang Xiao
5fe51b923a mm: Simplify the semaphore handling 
1.Move all special process to mm_takesemaphore
2.Remove the support of recurive lock
3.Remove mm_trysemaphore function

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: Ie216a6294ab67c5d427f31b089beb15c532f08fe
 2021-07-10 16:10:32 -03:00
Brennan Ashton
3cdc0b7332 libc: Add additional checks to malloc realloc and memalign 2021-04-04 18:58:04 -07:00
mage1
635cfadc25 mm: Move mm_heap_s related stuff to private header file 
since it will improve the modularity and reduce the inforamtion explosion

Change-Id: I085b36adb38993a979625a1f4c252d364a15afa1
 2021-03-19 09:56:39 -07:00
Alin Jerpelea
bcee9c391c mm: Author Gregory Nutt: update licenses to Apache 
Gregory Nutt has submitted the SGA and we can mograte the licenses
to Apache.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
 2021-02-09 01:21:53 -08:00
Brennan Ashton
e87617f9fa nxstyle: fixup style issues in mm_realloc.c 
Signed-off-by: Brennan Ashton <bashton@brennanashton.com>
 2020-06-29 14:56:26 -07:00
Brennan Ashton
fcd6e1c7eb mm: Do not memcopy more than oldsize when realloc 
When realloc up from a mem area to a larger one where a new node
is needed. The the larger memory region is copied from the source
this can both leak data as well as cause memory faults accesssing
invalid data.

This was first reported by Kwonsk

Signed-off-by: Brennan Ashton <bashton@brennanashton.com>
 2020-06-29 14:56:26 -07:00
YAMAMOTO Takashi
46ad645efc mm: Add a bunch of assertions 2020-02-13 08:21:18 -06:00
Gregory Nutt
1382ea5447 mm/: Coding style clean-up 
Run tools/nxstyle against all C files under mm/ and correct coding standard violations.
 2020-02-13 15:16:53 +01:00
YAMAMOTO Takashi
710da6022d Fix comment typos 2020-02-12 20:39:47 -06:00
Gregory Nutt
0064dc52e5 realloc(): When realloc() has to fall back to calling malloc(), size including overhead was being provided to malloc(), causing a slightly larger allocation than needed. Noted by initialkjc@yahoo.com 2017-03-28 07:23:46 -06:00
Gregory Nutt
c4493528a1 Remove some empty file section section header comments 2016-02-17 18:57:35 -06:00
Gregory Nutt
06cd5b2fcc mm, audio, crypto, graphics: Fix various spacing/alignment issues 2015-10-08 09:10:22 -06:00
Paul A. Patience
9f108b7b63 Fix issues detected by clang 2015-09-10 20:59:43 -04:00
Gregory Nutt
9ac09db800 More fixes to problems noted by cppcheck. Some are kind of risky; some are real bugs. 2014-11-25 13:46:14 -06:00
Gregory Nutt
b33c2d9cef Move include/nuttx/mm.h to include/nuttx/mm/mm.h 2014-09-24 07:29:09 -06:00
Gregory Nutt
3464089542 Move core heap allocator logic from mm/. to mm/mm_heap/. 2014-09-22 10:53:50 -06:00