Re: Disabling interrupts

Why don't you just use DMA? Have a couple of buffers and flip between
them writing the data to disk while the DMA controller handles the
reads. Again, this will mean writing a module.

Greg.

Quoth Pavel Roskin:

quoted

Does it have to be a user mode piece of code?  You're going to have real
trouble figuring that out if so.  Could you put that small portion of code
into a kernel module and just load it from your user program to do what it
needs to?

Well, this code needs to read some data continously. Then the data must
be processed and written to a file.

If you expect problems, I could create a new syscall and pass a buffer to
it. Probably this should be Ok. But the buffer can be huge (comparable
with the RAM size), so I would like to avoid copying data. This means that
the kernel needs to write to the userspace buffer directly.

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