Processors

Processors forum

State
Locked Locked
Replies 4 replies
Subscribers 100 subscribers
Views 1051 views
Users 0 members are here

Support feedback

Options

Options

Similar topics

CMEM Error: allocPool

G T

Expert 1940 points

I am allocating buffers in CMEM reserved memory on a DRA7xxx processor on the ARM(Linux) side and sending the pointer to buffer to DSP(TI-RTOS).

The pointer is being sent using MessageQ. The buffer is allocated and freed approx every 30ms.

After allocating and freeing buffer for sometime( around 10-15 mins), I am seeing this error.

CMEM Error: allocPool: Failed to mmap buffer at physical address 0xa3b81000

CMEM Error: Freeing phys buffer 0xa3b81000

Any idea why I am seeing this error? Why is CMEM failing to mmap buffer?

Let me know if any other info is needed.

Thanks,

Girish

over 7 years ago

0 Margarita Gashova over 7 years ago

TI__Guru* 80190 points

Hello,

I am not aware with DRA7x but you could check this topic:
e2e.ti.com/.../283456

Here is the cmem wikipage:
processors.wiki.ti.com/.../CMEM_Overview

Hope this helps.

BR
Margarita

0 G T over 7 years ago in reply to Margarita Gashova

Expert 1940 points

Hi,
I tried reducing CMEM reserve memory size but that did not make any difference. I am seeing this error after continuously calling CMEM_alloc() and CMEM_free on a single cmem reserved buffer address.
Any other suggestions on what I can try?

0 Margarita Gashova over 7 years ago in reply to G T

TI__Guru* 80190 points

Hello,

Unfortunately, I am not expert on this.

You could check debugging techniques in this guide:
processors.wiki.ti.com/.../CMEM_Overview

BR
Margarita

0 G T over 7 years ago in reply to Margarita Gashova

Expert 1940 points

Never mind, I think I fixed this by using CMEM_allocPhys2() and CMEM_map/unmap instead of using CMEM_alloc2().
I am not seeing this error any more.

Thanks!
-Girish