Is it possible to increase kernel memory ?

pegasus2000 · Post by **pegasus2000** » Sat Dec 29, 2007 11:48 am

I have a trouble: when I load my module kernelextender.prx,
the system refuses to load other modules (as network
modules) with an error 0x80020190 (no memory).

It seems that the module kernelextender.prx, programmed by
me, occupies all memory kernel, but it is also 5 Kb.

I have custom firmware 3.77 M33-4 on PSP-SLIM

What do you think about this ?

weltall · Post by **weltall** » Sun Dec 30, 2007 1:46 am

strange kernel ram available is at least 300kb in the worst cases.
are you sure you arent alloching ram on the kernel partition?

pegasus2000 · Post by **pegasus2000** » Sun Dec 30, 2007 2:24 am

weltall wrote:strange kernel ram available is at least 300kb in the worst cases.
are you sure you arent alloching ram on the kernel partition?

I don't know. How can I ensure that the allocation isn't in
kernel partition ?

weltall · Post by **weltall** » Sun Dec 30, 2007 7:05 pm

pegasus2000 wrote:
weltall wrote:strange kernel ram available is at least 300kb in the worst cases.
are you sure you arent alloching ram on the kernel partition?
I don't know. How can I ensure that the allocation isn't in
kernel partition ?

well if you use malloc or you have set the heap (PSP_HEAP_SIZE_KB(20480); ) or you did a too big heap in the thread initialization.
you may even try loading it trough psplink so you can check what happens to ram exactly

pegasus2000 · Post by **pegasus2000** » Sun Dec 30, 2007 7:31 pm

weltall wrote:
pegasus2000 wrote:
weltall wrote:strange kernel ram available is at least 300kb in the worst cases.
are you sure you arent alloching ram on the kernel partition?
I don't know. How can I ensure that the allocation isn't in
kernel partition ?
well if you use malloc or you have set the heap (PSP_HEAP_SIZE_KB(20480); ) or you did a too big heap in the thread initialization.
you may even try loading it trough psplink so you can check what happens to ram exactly

I have set PSP_HEAP_SIZE_MAX

weltall · Post by **weltall** » Mon Dec 31, 2007 6:22 pm

ok remove that thing you are alloching all the kernel ram...
and if possible remove also malloc from your plugin. malloc shouldn't be used for those you should use the partition alloc functions from the firmware

Jim · Post by **Jim** » Tue Jan 01, 2008 6:24 am

Allocate the memory in your user area and pass a pointer to the kernel code.

Jim

weltall · Post by **weltall** » Tue Jan 01, 2008 6:22 pm

Jim wrote:Allocate the memory in your user area and pass a pointer to the kernel code.

Jim

yes and then games will stop working and other plugins won't find things were they should :P
a plugin should use only kernel ram or at least volatile (not suggested as some games use it) and me (it seems writing there doesn't do problems)

Raphael · Post by **Raphael** » Wed Jan 02, 2008 12:53 am

I'd guess writing to ME memory while the video/music plugin is running or a game is using ME's audio/video decoding would be a problem though, no?
Which games use the volatile memory?

weltall · Post by **weltall** » Wed Jan 02, 2008 7:37 am

strangely no. it seems to be fine. mind you irshell takes 600kbs from there ( :S ), remember always to allocate the partition to don't conflict with other things.

some examples are Gran theft auto, dungeons siege, the psp own browser...