linux-stable.git/net/iucv, branch v3.2

net: more accurate skb truesize

2011-10-13T20:05:07+00:00

skb truesize currently accounts for sk_buff struct and part of skb head.
kmalloc() roundings are also ignored.

Considering that skb_shared_info is larger than sk_buff, its time to
take it into account for better memory accounting.

This patch introduces SKB_TRUESIZE(X) macro to centralize various
assumptions into a single place.

At skb alloc phase, we put skb_shared_info struct at the exact end of
skb head, to allow a better use of memory (lowering number of
reallocations), since kmalloc() gives us power-of-two memory blocks.

Unless SLUB/SLUB debug is active, both skb->head and skb_shared_info are
aligned to cache lines, as before.

Note: This patch might trigger performance regressions because of
misconfigured protocol stacks, hitting per socket or global memory
limits that were previously not reached. But its a necessary step for a
more accurate memory accounting.

Signed-off-by: Eric Dumazet 
CC: Andi Kleen 
CC: Ben Hutchings 
Signed-off-by: David S. Miller

af_iucv: add HiperSockets transport

2011-08-13T08:10:16+00:00

The current transport mechanism for af_iucv is the z/VM offered
communications facility IUCV. To provide equivalent support when
running Linux in an LPAR, HiperSockets transport is added to the
AF_IUCV address family. It requires explicit binding of an AF_IUCV
socket to a HiperSockets device. A new packet_type ETH_P_AF_IUCV
is announced. An af_iucv specific transport header is defined
preceding the skb data. A small protocol is implemented for
connecting and for flow control/congestion management.

Signed-off-by: Ursula Braun 
Signed-off-by: Frank Blaschka 
Reviewed-by: Hendrik Brueckner 
Signed-off-by: David S. Miller

af_iucv: cleanup - use iucv_sk(sk) early

2011-08-13T08:10:16+00:00

Code cleanup making make use of local variable for struct iucv_sock.

Signed-off-by: Ursula Braun 
Signed-off-by: Frank Blaschka 
Signed-off-by: David S. Miller

af_iucv: use loadable iucv interface

2011-08-13T08:10:16+00:00

For future af_iucv extensions the module should be able to run in LPAR
mode too. For this we use the new dynamic loading iucv interface.

Signed-off-by: Frank Blaschka 
Signed-off-by: David S. Miller

iucv: kernel option for z/VM IUCV and HiperSockets

2011-08-13T08:10:16+00:00

When adding HiperSockets transport to AF_IUCV Sockets, af_iucv either
depends on IUCV or QETH_L3 (or both). This patch introduces the
necessary changes for kernel configuration.

Signed-off-by: Ursula Braun 
Signed-off-by: Frank Blaschka 
Signed-off-by: David S. Miller

iucv: introduce loadable iucv interface

2011-08-13T08:10:15+00:00

This patch adds a symbol to dynamically load iucv functions.

Signed-off-by: Frank Blaschka 
Signed-off-by: David S. Miller

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

[S390] iucv cr0 enablement bit

2011-07-24T08:48:22+00:00

Do not set the cr0 enablement bit for iucv by default in head[31|64].S,
move the enablement to iucv_init in the iucv base layer.

Signed-off-by: Martin Schwidefsky

[S390] irq: merge irq.c and s390_ext.c

2011-05-26T07:48:24+00:00

Merge irq.c and s390_ext.c into irq.c. That way all external interrupt
related functions are together.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

convert old cpumask API into new one

2011-05-13T18:55:21+00:00

Adapt new API.

Signed-off-by: KOSAKI Motohiro 
Signed-off-by: Frank Blaschka 
Signed-off-by: David S. Miller