shared memory problem on ARM v5TE using threads

Heiko Schocher hs at denx.de
Fri Dec 4 10:58:43 EST 2009


Hello Russell King,

Russell King - ARM Linux wrote:
> On Fri, Dec 04, 2009 at 02:42:12PM +0100, Heiko Schocher wrote:
>> Hello Russell King,
>>
>> Russell King - ARM Linux wrote:
>>> On Fri, Dec 04, 2009 at 12:23:45PM +0100, Heiko Schocher wrote:
>>>> [4] Log from Demoprogramm, not working
>>> I think this is messed up - this is not from your first script but your
>>> second script which starts four independent read processes.
>>>
>>> I determined this because:
>>> (1) the read thread addresses are mostly the same
>>> (2) there are four "Read form in_msg" strings, which you only print
>>> once at the start of the program.
>> Ups, sorry for the confusion, here 2 logs with the right values:
> 
> I don't remember whether 2.6.28 has highmem.  Can you check whether you're
> using highmem please?

No, there is no HIGHMEM in the defconfig, if you mean this config option.

You can find the complete defconfig here:

http://git.denx.de/?p=linux-2.6-denx.git;a=blob;f=arch/arm/configs/suen3_defconfig;h=905f9bc6a36c03ab41b97a292fca5b3a0011a2a0;hb=3dc3e4dc957f216ec5cdcd2a770f5c4b0cefca4a

bye
Heiko
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