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>
This is a fix of:
0169a51220
This is caused by wrong memory sem operation in IDLE.
Fix:
Obey the original design, don't check the IDLE in mm_takesemaphore()
Signed-off-by: ligd <liguiding1@xiaomi.com>
For CEVA platform CHAR_BIT is 16, and will do lots of extra work
when use IPC.
We will not support this platform anymore, so remove all the b2c operations.
Signed-off-by: ligd <liguiding1@xiaomi.com>
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
it's more simple to make mm_heap_s opaque outside of mm
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: I5c8e435f6baba6d22b10c5f7e8d9191104fb5af2
and remove mm_sbrk and kmm_sbrk since it's wrong to expose
sbrk to other heaps except the default userspace heap.
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Root casue:
when do thread exit, need add free stack operation to mm_delaylist,
but in SMP mode, CPU0 thread1 exit, at this time, CPU1 call malloc
and free mm_delaylist.
Fix:
Divide mm_delaylist for per CPU in SMP mode.
Change-Id: Ibf7d04614ea2f99fb5b506356b7346a0d94f0590
Signed-off-by: ligd <liguiding1@xiaomi.com>
Broken by 635cfa.
On an stm32 the heap is formed from
const uintptr_t g_idle_topstack = HEAP_BASE;
where HEAP_BASE is &_bss + CONFIG_IDLE_STACKSIZE.
Both these values are not deterministic. One
comes from the compiler, the other the system
configurator.
a 3 byte bss and 250 byte stack would lead to
and unaligned address used as the heap to be.
The compiler used clever `strd r1,r3,[r5,#8]` to
store 2 values in one memory cycle into the
heap_impl struct. Resulting in a hardfault.
Change the amount of bss or the CONFIG_IDLE_STACKSIZE
could lead to a non-functional NuttX system.
Summary:
- This commit removes critical section in mm_sem.c which was
added to stabilize the NuttX SMP kernel in Mar 2018.
Impact:
- SMP only
Testing:
- Tested with ostest with the following configs
- maix-bit:smp (QEMU), esp32-devkitc:smp (QEMU)
- sabre-6quad:smp (QEMU), spresense:smp, sim:smp
- Tested with nxplayer with the following configs
- spresense:wifi_smp, spresense:rndis_smp
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
since other subsystem doesn't need call these function anymore
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: Idfb217c412db62d9f17f427310b75bb78785dc50
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>
