linux-toradex.git/arch/tile/lib, branch v3.4.73

tilepro: work around module link error with gcc 4.7

2013-06-27T18:27:30+00:00

commit 3cb3f839d306443f3d1e79b0bde1a2ad2c12b555 upstream.

gcc 4.7.x is emitting calls to __ffsdi2 where previously
it used to inline the appropriate ctz instructions.
While this needs to be fixed in gcc, it's also easy to avoid
having it cause build failures when building with those
compilers by exporting __ffsdi2 to modules.

Signed-off-by: Chris Metcalf 
Signed-off-by: Greg Kroah-Hartman

arch/tile: fix finv_buffer_remote() for tilegx

2012-04-02T16:13:53+00:00

There were some correctness issues with this code that are now fixed
with this change.  The change is likely less performant than it could
be, but it should no longer be vulnerable to any races with memory
operations on the memory network while invalidating a range of memory.
This code is run infrequently so performance isn't critical, but
correctness definitely is.

Signed-off-by: Chris Metcalf

arch/tile: fix pointer cast in cacheflush.c

2012-04-02T16:13:39+00:00

Pragmatically it couldn't be wrong to cast pointers to long to compare
them (since all kernel addresses are in the top half of VA space),
but it's more correct to cast to unsigned long.

Signed-off-by: Chris Metcalf

arch/tile: fix bug in delay_backoff()

2012-04-02T16:13:15+00:00

We were carefully computing a value to use for the number of loops
to spin for, and then ignoring it.

Signed-off-by: Chris Metcalf

arch/tile: make sure to build memcpy_user_64 without frame pointer

2012-04-02T16:12:42+00:00

Add a comment explaining why this is important, and add a CFLAGS_REMOVE
clause to the Makefile to make sure it happens.

Signed-off-by: Chris Metcalf

arch/tile: misplaced parens near likely

2012-03-12T19:32:18+00:00

Parentheses were missing.

Signed-off-by: Roel Kluin 
Signed-off-by: Chris Metcalf

arch/tile: add a few #includes and an EXPORT to catch up with kernel changes.

2011-12-03T20:31:41+00:00

The empty_zero_page[] export is required for ZERO_PAGE() module references.
The #includes are due to changes in implicit inclusion, and should of
course have been in the sources from the beginning.

Signed-off-by: Chris Metcalf

arch/tile: avoid exporting a symbol no longer used by gcc

2011-11-03T20:58:42+00:00

An earlier Tilera compiler generated calls to an "__ll_mul"
function for long long multiplication.  Our libgcc supported that
as an alias for the normal __muldi3 routine, so we made it available
to kernel modules as well.  However, for a while now the compiler
has internally been generating only the standard __muldi3 symbol,
and the version we are giving back to the community does not have
the __ll_mul alias, so we are removing it from the kernel too.

Signed-off-by: Chris Metcalf

tile: revert change from to in asm files

2011-10-13T12:25:01+00:00

The 32-bit TILEPro support uses some #defines in 
for atomic support routines in assembly.  To make this more explicit,
I've turned those includes into includes of , which
should hopefully make it clear that they shouldn't be bombed into
 in any cleanups.

Signed-off-by: Chris Metcalf

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