linux.git/arch/powerpc/lib, branch v2.6.22

[POWERPC] rheap - eliminates internal fragments caused by alignment

2007-06-20T03:35:53+00:00

The patch adds fragments caused by rh_alloc_align() back to free list, instead
of allocating the whole chunk of memory.  This will greatly improve memory
utilization managed by rheap.

It solves MURAM not enough problem with 3 UCCs enabled on MPC8323.

Signed-off-by: Li Yang 
Acked-by: Joakim Tjernlund  
Signed-off-by: Kumar Gala

[POWERPC] Fix alignment problem in rh_alloc_align() with exact-sized blocks

2007-05-17T11:10:16+00:00

When an rheap is created, the caller can specify the alignment to use.  In
rh_alloc_align(), if a free block is found that is the exact size needed
(including extra space for alignment), that configured alignment value is not
used to align the pointer.  Instead, the default alignment is used.  If the
default alignment is smaller than the configured alignment, then the returned
value will not be aligned correctly.

Signed-off-by: Timur Tabi 
Signed-off-by: Kumar Gala

[POWERPC] User rheap from arch/powerpc/lib

2007-05-10T04:28:17+00:00

Removed rheap in arch/ppc/lib and changed build system to use the
one in arch/powerpc/lib.

Signed-off-by: Kumar Gala

[POWERPC] Change rheap functions to use ulongs instead of pointers

2007-05-10T04:01:43+00:00

The rheap allocation functions return a pointer, but the actual value is based
on how the heap was initialized, and so it can be anything, e.g. an offset
into a buffer.  A ulong is a better representation of the value returned by
the allocation functions.

This patch changes all of the relevant rheap functions to use a unsigned long
integers instead of a pointer.  In case of an error, the value returned is
a negative error code that has been cast to an unsigned long.  The caller can
use the IS_ERR_VALUE() macro to check for this.

All code which calls the rheap functions is updated accordingly.  Macros
IS_MURAM_ERR() and IS_DPERR(), have been deleted in favor of IS_ERR_VALUE().

Also added error checking to rh_attach_region().

Signed-off-by: Timur Tabi 
Signed-off-by: Kumar Gala

[POWERPC] Remove use of 4level-fixup.h for ppc32

2007-05-08T03:40:31+00:00

For 32-bit systems, powerpc still relies on the 4level-fixup.h hack,
to pretend that the generic pagetable handling stuff is 3-levels
rather than 4.  This patch removes this, instead using the newer
pgtable-nopmd.h to handle the elision of both the pud and pmd
pagetable levels (ppc32 pagetables are actually 2 levels).

This removes a little extraneous code, and makes it more easily
compared to the 64-bit pagetable code.

Signed-off-by: David Gibson 
Signed-off-by: Paul Mackerras

Merge branch 'linux-2.6' into for-2.6.22

2007-04-30T02:38:01+00:00

[STRING]: Move strcasecmp/strncasecmp to lib/string.c

2007-04-26T08:54:39+00:00

We have several platforms using local copies of identical
code.

Signed-off-by: David S. Miller

[POWERPC] Emulate more instructions in software

2007-04-24T11:31:57+00:00

Emulate a few more instructions in software - especially useful during
singlestepping (xmon/kprobes).

Instructions emulated with this patch are mfcr/mtcr rX, mfxer/mtxer rX,
mflr/mtlr rX, mfctr/mtctr rX and mr rA,rB.

Signed-off-by: Ananth N Mavinakayanahalli 
Signed-off-by: Paul Mackerras

[POWERPC] Use mtocrf instruction in asm when CONFIG_POWER4_ONLY=y

2007-04-12T17:55:13+00:00

mtocrf is a faster single-field mtcrf (move to condition register
fields) instruction available in POWER4 and later processors.  It can
make quite a difference in performance on some implementations, so use
it for CONFIG_POWER4_ONLY builds.

Signed-off-by: Olof Johansson 
Signed-off-by: Paul Mackerras

[POWERPC] Make ppc64_defconfig without CONFIG_PPC_PSERIES build

2007-03-09T04:03:24+00:00

Signed-off-by: Stephen Rothwell 
Signed-off-by: Paul Mackerras