linux-toradex.git/arch/powerpc/kernel/ppc_ksyms.c, branch v3.2.34

powerpc: various straight conversions from module.h --> export.h

2011-10-31T23:30:44+00:00

All these files were including module.h just for the basic
EXPORT_SYMBOL infrastructure.  We can shift them off to the
export.h header which is a way smaller footprint and thus
realize some compile time gains.

Signed-off-by: Paul Gortmaker

atomic: use

2011-07-26T23:49:47+00:00

This allows us to move duplicated code in 
(atomic_inc_not_zero() for now) to 

Signed-off-by: Arun Sharma 
Reviewed-by: Eric Dumazet 
Cc: Ingo Molnar 
Cc: David Miller 
Cc: Eric Dumazet 
Acked-by: Mike Frysinger 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

powerpc: Simplify 4k/64k copy_page logic

2011-05-19T04:30:42+00:00

To make it easier to add optimised versions of copy_page, remove
the 4kB loop for 64kB pages and just do all the work in copy_page.

Signed-off-by: Anton Blanchard 
Signed-off-by: Benjamin Herrenschmidt

powerpc: Add support for popcnt instructions

2010-11-29T04:48:17+00:00

POWER5 added popcntb, and POWER7 added popcntw and popcntd. As a first step
this patch does all the work out of line, but it would be nice to implement
them as inlines with an out of line fallback.

The performance issue with hweight was noticed when disabling SMT on a large
(192 thread) POWER7 box. The patch improves that testcase by about 8%.

Signed-off-by: Anton Blanchard 
Signed-off-by: Benjamin Herrenschmidt

KVM: PPC: elide struct thread_struct instances from stack

2010-08-01T07:39:24+00:00

Instead of instantiating a whole thread_struct on the stack use only the
required parts of it.

Signed-off-by: Andreas Schwab 
Tested-by: Alexander Graf 
Signed-off-by: Marcelo Tosatti

powerpc: Don't export cvt_fd & _df when CONFIG_PPC_FPU is not set

2010-05-31T01:51:54+00:00

Signed-off-by: Benjamin Herrenschmidt

KVM: PPC: Find HTAB ourselves

2010-05-17T09:19:07+00:00

For KVM we need to find the location of the HTAB. We can either rely
on internal data structures of the kernel or ask the hardware.

Ben issued complaints about the internal data structure method, so
let's switch it to our own inquiry of the HTAB. Now we're fully
independend :-).

CC: Benjamin Herrenschmidt 
Signed-off-by: Alexander Graf 
Signed-off-by: Avi Kivity

KVM: PPC: Export MMU variables

2010-05-17T09:18:48+00:00

Our shadow MMU code needs to know where the HTAB is located and how
big it is. So we need some variables from the kernel exported to
module space if KVM is built as a module.

CC: Benjamin Herrenschmidt 
Signed-off-by: Alexander Graf 
Acked-by: Benjamin Herrenschmidt 
Signed-off-by: Avi Kivity

KVM: PPC: Don't export Book3S symbols on BookE

2010-05-17T09:17:25+00:00

Book3S knows how to convert floats to doubles and vice versa. BookE doesn't.
So let's make sure we don't export them on BookE.

This fixes a link error on BookE with CONFIG_KVM=y.

Signed-off-by: Alexander Graf 
Signed-off-by: Avi Kivity

KVM: PPC: Add helpers to call FPU instructions

2010-04-25T09:35:15+00:00

To emulate paired single instructions, we need to be able to call FPU
operations from within the kernel. Since we don't want gcc to spill
arbitrary FPU code everywhere, we tell it to use a soft fpu.

Since we know we can really call the FPU in safe areas, let's also add
some calls that we can later use to actually execute real world FPU
operations on the host's FPU.

Signed-off-by: Alexander Graf 
Signed-off-by: Avi Kivity