linux-toradex.git/arch/sh/lib, branch v2.6.32.33

sh: Kill off dcache writeback from copy_page().

2009-09-08T07:23:08+00:00

Now that the cache purging is handled manually by all copy_page()
callers, we can kill off copy_page()'s on writeback. This optimizes the
non-aliasing case.

Signed-off-by: Paul Mundt

Merge branch 'master' into sh/smp

2009-09-01T04:54:14+00:00

Conflicts:
	arch/sh/mm/cache-sh4.c

sh: Fix underflow in SH udelay() code.

2009-08-24T09:18:50+00:00

Signed-off-by: Stuart Menefy 
Signed-off-by: Paul Mundt

sh: Remove implicit sign extension from assembler immediates

2009-08-24T08:09:53+00:00

The SH instruction set has several instructions which accept an 8 bit
immediate operand. For logical instructions this operand is zero extended,
for arithmetic instructions the operand is sign extended. After adding an
option to the assembler to check this, it was found that several pieces
of assembly code were assuming this behaviour, and in one case
getting it wrong.

So this patch explicitly sign extends any immediate operands, which makes
it obvious what is happening, and fixes the one case which got it wrong.

Signed-off-by: Stuart Menefy 
Signed-off-by: Paul Mundt

sh: Rename arch/sh/lib/clear_page.S -> __clear_user.S.

2009-07-27T11:55:46+00:00

Now that this only contains the __clear_user() function, rename it
accordingly.

Signed-off-by: Paul Mundt

sh: wire up clear_user_highpage() for sh4, convert sh7705.

2009-07-27T11:53:22+00:00

This wires up clear_user_highpage() on SH-4 and subsequently converts the
SH7705 32kB cache mode over to using it. Now that the SH-4 implementation
handles all of the dcache purging directly in the aliasing case, there is
no need to do this in the default clear_page() implementation.

Signed-off-by: Paul Mundt

sh: Fix up stack overflow check with ftrace disabled.

2009-07-11T12:06:53+00:00

Presently the STACK_CHECK() code is called in to multiple times, although
it's only necessary from the mcount entry. The code still attempts to
treat the nop case as an ftrace path resulting in superfluous code flow
for the case where ftrace is disabled. And finally, this also fixes up
references to a few undefined symbols when FUNCTION_TRACER=n.

Signed-off-by: Paul Mundt

sh: Fix up ftrace build error when STACK_DEBUG=n.

2009-07-11T11:33:34+00:00

Presently the closest reference to function_trace_stop is within a
CONFIG_STACK_DEBUG block. When this is turned off, the build bails out
with a pcrel too far error. Reorder things a bit to handle the various
combinations.

Signed-off-by: Paul Mundt

sh: Decouple mcount from ftrace.

2009-07-11T10:56:58+00:00

This adds a general CONFIG_MCOUNT in order to permit mcount generation
without ftrace support. This is primarily for allowing platforms to
enable aggressive stack overflow checking without having to enable ftrace
support. Based on the sparc64 implementation.

Signed-off-by: Paul Mundt

sh: Function graph tracer support

2009-07-11T01:08:01+00:00

Add both dynamic and static function graph tracer support for sh.

Signed-off-by: Matt Fleming 
Signed-off-by: Paul Mundt