linux-toradex.git/arch/mips/lib/Makefile, branch v2.6.21

[MIPS] Fix and cleanup the mess that a dozen prom_printf variants are.

2007-03-04T19:02:37+00:00

early_printk is a so much saner thing.

Signed-off-by: Ralf Baechle

[MIPS] Kill redundant EXTRA_AFLAGS

2007-02-26T23:06:05+00:00

Many Makefiles in arch/mips have EXTRA_AFLAGS := $(CFLAGS) line.  This
is redundant while AFLAGS contains $(cflags-y) and any options only
listed in CFLAGS (not in cflags-y) should be unnecessary for asm
sources.

Signed-off-by: Atsushi Nemoto 
Signed-off-by: Ralf Baechle

[MIPS] Fixup copy_from_user_inatomic

2007-02-20T01:26:42+00:00

From the 01408c4939479ec46c15aa7ef6e2406be50eeeca log message:

The problem is that when we write to a file, the copy from userspace to
pagecache is first done with preemption disabled, so if the source
address is not immediately available the copy fails *and* *zeros* *the*
*destination*.

This is a problem because a concurrent read (which admittedly is an odd
thing to do) might see zeros rather that was there before the write, or
what was there after, or some mixture of the two (any of these being a
reasonable thing to see).

If the copy did fail, it will immediately be retried with preemption
re-enabled so any transient problem with accessing the source won't
cause an error.

The first copying does not need to zero any uncopied bytes, and doing
so causes the problem.  It uses copy_from_user_atomic rather than
copy_from_user so the simple expedient is to change copy_from_user_atomic
to *not* zero out bytes on failure.

< --- end cite --- >

This patch finally implements at least a not so pretty solution by
duplicating the relevant part of __copy_user.

Signed-off-by: Ralf Baechle

[MIPS] Iomap implementation.

2007-02-18T21:31:34+00:00

This implementation has support for the concept of one separate ioport
address space by PCI domain.  A pointer to the virtual address where
the port space of a domain has been mapped has been added to struct
pci_controller and systems should be fixed to fill in this value. For
single domain systems this will be the same value as passed to
set_io_port_base().

Signed-off-by: Ralf Baechle

[MIPS] Unify memset.S

2007-02-06T16:53:12+00:00

The 32-bit version and 64-bit version are almost equal.  Unify them.
This makes further improvements (for example, supporting CDEX, etc.)
easier.

Signed-off-by: Atsushi Nemoto 
Signed-off-by: Ralf Baechle

[MIPS] csum_partial and copy in parallel

2007-01-08T21:41:04+00:00

Implement optimized asm version of csum_partial_copy_nocheck,
csum_partial_copy_from_user and csum_and_copy_to_user which can do
calculate and copy in parallel, based on memcpy.S.

Signed-off-by: Atsushi Nemoto 
Signed-off-by: Ralf Baechle

[MIPS] Unify csum_partial.S

2006-12-04T22:43:13+00:00

The 32-bit version and 64-bit version are almost equal.  Unify them.  This
makes further improvements (for example, copying with parallel, supporting
PREFETCH, etc.) easier.

Signed-off-by: Atsushi Nemoto 
Signed-off-by: Ralf Baechle

[MIPS] Fix optimization for size build.

2006-06-19T16:39:16+00:00

    
It took a while longer than on other architectures but gcc has finally
started to strike us as well ...
    
This also fixes the damage by 6edfba1b33c701108717f4e036320fc39abe1912.
    
Signed-off-by: Ralf Baechle

Better interface to run uncached cache setup code.

2005-10-29T18:31:11+00:00

Signed-off-by: Thiemo Seufer 
Signed-off-by: Ralf Baechle

[LIB]: Consolidate _atomic_dec_and_lock()

2005-09-15T04:47:01+00:00

Several implementations were essentialy a common piece of C code using
the cmpxchg() macro.  Put the implementation in one spot that everyone
can share, and convert sparc64 over to using this.

Alpha is the lone arch-specific implementation, which codes up a
special fast path for the common case in order to avoid GP reloading
which a pure C version would require.

Signed-off-by: David S. Miller