litmus2008.git/arch/xtensa/kernel, branch master

Use helpers to obtain task pid in printks (arch code)

2007-10-19T18:53:43+00:00

One of the easiest things to isolate is the pid printed in kernel log.
There was a patch, that made this for arch-independent code, this one makes
so for arch/xxx files.

It took some time to cross-compile it, but hopefully these are all the
printks in arch code.

Signed-off-by: Alexey Dobriyan 
Signed-off-by: Pavel Emelyanov 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Consolidate PTRACE_DETACH

2007-10-16T16:42:49+00:00

Identical handlers of PTRACE_DETACH go into ptrace_request().
Not touching compat code.
Not touching archs that don't call ptrace_request.

Signed-off-by: Alexey Dobriyan 
Acked-by: Christoph Hellwig 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[XTENSA] Add support for cache-aliasing

2007-08-27T20:54:16+00:00

Add support for processors that have cache-aliasing issues, such as
the Stretch S5000 processor. Cache-aliasing means that the size of
the cache (for one way) is larger than the page size, thus, a page
can end up in several places in cache depending on the virtual to
physical translation. The method used here is to map a user page
temporarily through the auto-refill way 0 and of of the DTLB.
We probably will want to revisit this issue and use a better
approach with kmap/kunmap.

Signed-off-by: Chris Zankel

[XTENSA] Add kernel module support

2007-08-27T20:54:06+00:00

Add kernel module support.

Signed-off-by: Chris Zankel

[XTENSA] Add support for executable/non-executable feature in the mmu

2007-08-27T20:54:01+00:00

Newer processor versions starting with Xtensa6/LX2 support an 'executable'
bit for memory pages. This bit replaces the 'valid' bit, so it must be
always set to one for older processor versions. To mark a page invalid, we now
set the cache-attributes to b11, which is backward compatible.

Signed-off-by: Chris Zankel

[XTENSA] Initialize semaphore_wake_lock

2007-08-27T20:53:51+00:00

Initialize semaphore_wake_lock.

Signed-off-by: Chris Zankel

[XTENSA] Fix timer instabilities.

2007-08-27T20:53:37+00:00

The timer code could have missed a tick.

Signed-off-by: Chris Zankel

[XTENSA] Fix fadvise64_64

2007-08-27T20:53:32+00:00

Xtensa passes long long arguments in a even/odd register pair,
so we also need to shuffle the arguments when passed through the
system call to avoid an empty argument register.

Signed-off-by: Chris Zankel

[XTENSA] Move string-io functions to io.c from pci.c

2007-08-27T20:53:22+00:00

The string-io functions (outs{bwl}, ins{bwl}) are independent from
the PCI option and should be in a separate file.

Signed-off-by: Chris Zankel

[XTENSA] Move pre-initialized structures to init_task.c

2007-08-27T20:53:12+00:00

Move all initialization structures for the initial task to it's own file.

Signed-off-by: Chris Zankel