linux-toradex.git/include/asm-powerpc/bitops.h, branch v2.6.24.2

forbid asm/bitops.h direct inclusion

2007-10-19T18:53:41+00:00

forbid asm/bitops.h direct inclusion

Because of compile errors that may occur after bit changes if asm/bitops.h is
included directly without e.g.  linux/kernel.h which includes linux/bitops.h,
forbid direct inclusion of asm/bitops.h.  Thanks to Adrian Bunk.

Signed-off-by: Jiri Slaby 
Cc: Adrian Bunk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

powerpc: lock bitops

2007-10-18T21:37:29+00:00

Add non-trivial lock bitops implementation for powerpc.

Signed-off-by: Nick Piggin 
Acked-by: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

bitops: introduce lock ops

2007-10-18T21:37:29+00:00

Introduce test_and_set_bit_lock / clear_bit_unlock bitops with lock semantics.
Convert all architectures to use the generic implementation.

Signed-off-by: Nick Piggin 
Acked-By: David Howells 
Cc: Richard Henderson 
Cc: Ivan Kokshaysky 
Cc: Russell King 
Cc: Haavard Skinnemoen 
Cc: Bryan Wu 
Cc: Mikael Starvik 
Cc: David Howells 
Cc: Yoshinori Sato 
Cc: "Luck, Tony" 
Cc: Hirokazu Takata 
Cc: Geert Uytterhoeven 
Cc: Roman Zippel 
Cc: Greg Ungerer 
Cc: Ralf Baechle 
Cc: Kyle McMartin 
Cc: Matthew Wilcox 
Cc: Paul Mackerras 
Cc: Benjamin Herrenschmidt 
Cc: Heiko Carstens 
Cc: Martin Schwidefsky 
Cc: Paul Mundt 
Cc: Kazumoto Kojima 
Cc: Richard Curnow 
Cc: William Lee Irwin III 
Cc: "David S. Miller" 
Cc: Jeff Dike 
Cc: Paolo 'Blaisorblade' Giarrusso 
Cc: Miles Bader 
Cc: Andi Kleen 
Cc: Chris Zankel 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

atomic.h: add atomic64 cmpxchg, xchg and add_unless to powerpc

2007-05-08T18:15:19+00:00

[akpm@linux-foundation.org: build fixes]
Signed-off-by: Mathieu Desnoyers 
Cc: Paul Mackerras 
Cc: Benjamin Herrenschmidt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] LOG2: Make powerpc's __ilog2_u64() take a 64-bit argument

2006-12-11T20:29:27+00:00

Make powerpc's __ilog2_u64() take a 64-bit argument.

Signed-off-by: David Howells 
Signed-off-by: Linus Torvalds

[PATCH] LOG2: Provide ilog2() fallbacks for powerpc

2006-12-08T16:28:51+00:00

Provide ilog2() fallbacks for powerpc for 32-bit numbers and 64-bit numbers on
ppc64.

Signed-off-by: David Howells 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

power: improve inline asm memory constraints

2006-07-08T22:00:28+00:00

Use "+m" rather than a combination of "=m" and "m" for improved
clarity and consistency.

Signed-off-by: Linus Torvalds

[PATCH] remove powerpc bitops in favor of existing generic bitops

2006-05-24T06:08:58+00:00

There already exists a big endian safe bitops implementation in
lib/find_next_bit.c.  The code in it is 90%+ common with the powerpc
specific version, so the powerpc version is redundant.  This patch
makes the necessary changes to use the generic bitops in powerpc, and
removes the powerpc specific version.

Signed-off-by: Jon Mason 
Signed-off-by: Paul Mackerras

[PATCH] bitops: powerpc: use generic bitops

2006-03-26T16:57:14+00:00

- remove __{,test_and_}{set,clear,change}_bit() and test_bit()
- remove generic_fls64()
- remove generic_hweight{64,32,16,8}()
- remove sched_find_first_bit()

Signed-off-by: Akinobu Mita 
Cc: Paul Mackerras 
Cc: Benjamin Herrenschmidt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] powerpc: use lwsync in atomics, bitops, lock functions

2006-01-13T10:18:50+00:00

eieio is only a store - store ordering. When used to order an unlock
operation loads may leak out of the critical region. This is potentially
buggy, one example is if a user wants to atomically read a couple of
values.

We can solve this with an lwsync which orders everything except store - load.

I removed the (now unused) EIEIO_ON_SMP macros and the c versions
isync_on_smp and eieio_on_smp now we dont use them. I also removed some
old comments that were used to identify inline spinlocks in assembly,
they dont make sense now our locks are out of line.

Another interesting thing was that read_unlock was using an eieio even
though the rest of the spinlock code had already been converted to
use lwsync.

Signed-off-by: Anton Blanchard 
Signed-off-by: Paul Mackerras