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bb5b5420ae
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31 Commits

Author SHA1 Message Date
yinshengkai
bb5b5420ae mm: record the maximum system memory usage 
Add the usmblks field to mallinfo to record the maximum space allocated historically in the system

https://man7.org/linux/man-pages/man3/mallinfo.3.html#:~:text=mmap(2).-,usmblks,-This%20field%20is

Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>
 2023-11-09 09:08:49 +08:00
Xuxingliang
b9e59ad0a7 mm: add macro to judge if node/prenode is free 
Signed-off-by: Xuxingliang <xuxingliang@xiaomi.com>
 2023-09-12 22:09:36 +08:00
Xuxingliang
c9f33b7ee5 mm: use unified naming style for macros 
Make all macro name starts with prefix MM_
Signed-off-by: Xuxingliang <xuxingliang@xiaomi.com>
 2023-09-12 22:09:36 +08:00
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
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
wangbowen6
81d37d0320 mm_memalign: avoid two adjacent free nodes situation. 
Original code assumes the previous node in physical must be
ALLOCED, but other thread may free the previous node between
mm_malloc() and mm_lock(), and the original code didn't condsider
this, which will cause two adjacent free nodes situation and this
should not be happened.

This commit will merge the previous node and node if the previous
node is free to avoid the situation discribed above.

Signed-off-by: wangbowen6 <wangbowen6@xiaomi.com>
 2023-01-30 11:47:06 +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
6214f3cde7 mm/heap: Fix the minor style issue 
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2023-01-08 01:25:18 +02:00
Xiang Xiao
4cc13c19c6 Revert "mm: Check the function result with suitable macro." 
This reverts commit 460d94729a.
 2022-11-07 10:01:52 +01:00
wangbowen6
fccda0c08b mm_heap: add debug assert to check the alignment problem 
Signed-off-by: wangbowen6 <wangbowen6@xiaomi.com>
Signed-off-by: YAMAMOTO Takashi <yamamoto@midokura.com>
 2022-11-01 19:21:01 +08:00
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
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
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
acb8ad4c7b mm: nxstyle fixes 
Nxstyle fixes to pass CI

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
 2021-02-09 01:21:53 -08:00
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
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
Jussi Kivilinna
75b53d563b mm/mm-heap: memalign: fix heap corruption caused by using unaligned chuck size. Unaligned nodes generated by memalign later cause heap corruptions when nodes are shrink further (for example, 24 bytes -> 8 bytes, when alignment is 16 bytes). 2017-10-24 15:35:52 -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
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