On 09/08/2014 11:40 AM, Savolainen, Petri (NSN - FI/Espoo) wrote:
-----Original Message-----
From: [email protected] [mailto:lng-odp-
[email protected]] On Behalf Of ext Maxim Uvarov
Sent: Monday, September 08, 2014 9:31 AM
To: Bala Manoharan
Cc: lng-odp-forward
Subject: Re: [lng-odp] [PATCH v2 1/2] Shared memory reserve flag
On 09/08/2014 09:30 AM, Bala Manoharan wrote:
Hi,
A Few queries from my side,
* ODP_SHM_PROC: In this case we need a mechanism to allow ODP process
to be able to do a lookup of shared memory created by process outside
of ODP. Current odp_shm_lookup only checks shm created by ODP process.
Yes. And this is process odp_shm_reserve(). You can take a look how I do
it for IPC in ipc patches. You need to call odp_shm_reserve() in 2
process with the same "name" argument.
Do we want to support shm created outside of ODP? Since ODP does not have full
control over that memory, ODP cannot guarantee that application can use it in a
portable way. Maybe it's better to operate such memory outside of ODP.
If decided to support in ODP, it should be clearly separate from ODP controlled
shm.
-Petri
I think it should be part of ODP. I.e. application developer should not
care about allocation models, functions or any hw specific things like
CMA. It should be platform specific thing. And application should be the
same for all platforms.
Maxim.
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