RMK,
On 03-Apr-12 1:00 PM, Russell King - ARM Linux wrote:
On Tue, Apr 03, 2012 at 09:34:03AM +0530, Taniya Das wrote:
I have a requirement where I need around ~100 bytes of memory to save
contents of
registers to a non-cached area before going into low power mode.
I did do some analysis on a 1GB RAM device of allocating 8 bytes using
the API and the below was the result
was showing allocating only 8 bytes.
API used : - arm_memblock_steal(SZ_8, SZ_64K);--> physical address
returned is 0x3b1f0000
It's silly to use this for the above purpose. Why not just use kmalloc
and cache flushing to ensure that the data is pushed out to RAM?
We don't want to do a kmalloc and flush, we want to do something similar
to how OMAP4
does, keeping aside a chunk of RAM for saving the contents. But my only
concern what will
be the minimum amount of memory allocated by arm_memblock_steal?
Also is this API advisable for devices with low system RAM?
No.
--
Thanks& Regards,
Taniya Das.
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
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