PULL REQUEST - md updates for 2.6.32, mostly raid6 offload

From: Neil Brown
Date: Fri Sep 18 2009 - 01:40:41 EST


Hi Linus,
please pull md and related updates as below.
Most of this is support for offloading the RAID6 calculation onto
dedicated hardware, hence the crypto/async_tx and drives/dma
changes. This makes RAID6 more consistent with RAID5 which already
supports XOR offload.
The only bit that is really from me is a couple of fixes for sparse
warnings, one of which was really an error. (It is a pity spares in
so noisy....)

Thanks,
NeilBrown


The following changes since commit 0cc6d77e55eca9557bbe41bf2db94b31aa8fcb2a:
Linus Torvalds (1):
Merge branch 'x86-setup-for-linus' of git://git.kernel.org/.../tip/linux-2.6-tip

are available in the git repository at:

git://neil.brown.name/md/ for-linus

Atsushi Nemoto (1):
dmaengine: Move all map_sg/unmap_sg for slave channel to its client

Dan Williams (81):
Merge branch 'dmaengine' into async-tx-raid6
async_tx: rename zero_sum to val
async_tx: kill ASYNC_TX_DEP_ACK flag
async_tx: structify submission arguments, add scribble
async_xor: permit callers to pass in a 'dma/page scribble' region
md/raid6: release spare page at ->stop()
ioat: move to drivers/dma/ioat/
md/raid6: move the spare page to a percpu allocation
md/raid5,6: add percpu scribble region for buffer lists
async_tx: add sum check flags
async_tx: kill needless module_{init|exit}
async_tx: remove walk of tx->parent chain in dma_wait_for_async_tx
async_tx: add support for asynchronous GF multiplication
async_tx: add support for asynchronous RAID6 recovery operations
dmatest: add pq support
async_tx: raid6 recovery self test
iop-adma: cleanup iop_adma_run_tx_complete_actions
iop-adma: fix lockdep false positive
iop-adma: P+Q support for iop13xx adma engines
iop-adma: P+Q self test
md/raid5: factor out mark_uptodate from ops_complete_compute5
md/raid6: asynchronous raid6 operations
md/raid6: asynchronous handle_parity_check6
md/raid456: distribute raid processing over multiple cores
Merge commit 'v2.6.31-rc1' into dmaengine
ioat: move definitions to dma.h
ioat: convert ioat_probe to pcim/devm
ioat: cleanup some long deref chains and 80 column collisions
ioat: kill function prototype ifdef guards
ioat: split ioat_dma_probe into core/version-specific routines
ioat: fix type mismatch for ->dmacount
ioat: define descriptor control bit-field
ioat1: move descriptor allocation from submit to prep
ioat: fix self test interrupts
ioat: prepare the code for ioat[12]_dma_chan split
ioat2,3: convert to a true ring buffer
ioat1: kill unused unmap parameters
ioat: add some dev_dbg() calls
ioat: cleanup completion status reads
ioat: ignore reserved bits for chancnt and xfercap
ioat: preserve chanctrl bits when re-arming interrupts
ioat: ___devinit annotate the initialization paths
ioat1: trim ioat_dma_desc_sw
ioat: switch watchdog and reset handler from workqueue to timer
ioat2,3: dynamically resize descriptor ring
net_dma: poll for a descriptor after allocation failure
Merge branch 'md-raid6-accel' into ioat3.2
dmaengine: add fence support
dmaengine, async_tx: add a "no channel switch" allocator
dmaengine: cleanup unused transaction types
dmaengine, async_tx: support alignment checks
ioat2+: add fence support
ioat3: hardware version 3.2 register / descriptor definitions
ioat3: split ioat3 support to its own file, add memset
ioat: add 'ioat' sysfs attributes
ioat3: enable dca for completion writes
ioat3: xor support
ioat3: xor self test
ioat3: pq support
ioat3: support xor via pq descriptors
ioat3: interrupt descriptor support
ioat3: segregate raid engines
Merge branch 'ioat' into dmaengine
dw_dmac: implement a private tx_list
fsldma: implement a private tx_list
iop-adma: implement a private tx_list
ioat: implement a private tx_list
mv_xor: implement a private tx_list
at_hdmac: implement a private tx_list
txx9dmac: implement a private tx_list
dmaengine: kill tx_list
ioat2,3: cacheline align software descriptor allocations
Merge branch 'iop-raid6' into async-tx-next
Merge branch 'dmaengine' into async-tx-next
Merge commit 'md/for-linus' into async-tx-next
async_tx: remove HIGHMEM64G restriction
ioat: driver version 4.0
md/raid6: eliminate BUG_ON with side effect
md/raid6: cleanup ops_run_compute6_2
ioat2: clarify ring size limits
raid6test: fix stack overflow

Ira Snyder (2):
fsldma: split apart external pause and request count features
fsldma: Add DMA_SLAVE support

Maciej Sosnowski (1):
dca: registering requesters in multiple dca domains

NeilBrown (3):
md: remove sparse waring "symbol xxx shadows an earlier one"
md: remove sparse warnings about lock context.
Merge branch 'next' of git://git.kernel.org/.../djbw/async_tx into for-linus

Nobuhiro Iwamatsu (1):
dmaengine: sh: Add Support SuperH DMA Engine driver

Roland Dreier (2):
Add MODULE_DEVICE_TABLE() so ioatdma module is autoloaded
I/OAT: Convert to PCI_VDEVICE()

Stephen Hemminger (1):
dca: module load should not be an error message

Tom Picard (1):
ioat3: ioat3.2 pci ids for Jasper Forest

Yuri Tikhonov (5):
md/raid5,6: common schedule_reconstruction for raid5/6
md/raid6: asynchronous handle_stripe_fill6
md/raid6: asynchronous handle_stripe_dirtying6
md/raid6: asynchronous handle_stripe6
md/raid6: remove synchronous infrastructure

Documentation/crypto/async-tx-api.txt | 75 +-
arch/arm/include/asm/hardware/iop3xx-adma.h | 81 +-
arch/arm/include/asm/hardware/iop_adma.h | 3 +
arch/arm/mach-iop13xx/include/mach/adma.h | 119 ++-
arch/arm/mach-iop13xx/setup.c | 17 +-
arch/arm/plat-iop/adma.c | 4 +-
arch/powerpc/include/asm/fsldma.h | 136 ++
arch/sh/drivers/dma/Kconfig | 12 +-
arch/sh/drivers/dma/Makefile | 3 +-
arch/sh/include/asm/dma-sh.h | 13 +
crypto/async_tx/Kconfig | 9 +
crypto/async_tx/Makefile | 3 +
crypto/async_tx/async_memcpy.c | 44 +-
crypto/async_tx/async_memset.c | 43 +-
crypto/async_tx/async_pq.c | 395 +++++
crypto/async_tx/async_raid6_recov.c | 455 +++++
crypto/async_tx/async_tx.c | 87 +-
crypto/async_tx/async_xor.c | 207 ++--
crypto/async_tx/raid6test.c | 240 +++
drivers/dca/dca-core.c | 124 ++-
drivers/dma/Kconfig | 14 +-
drivers/dma/Makefile | 4 +-
drivers/dma/at_hdmac.c | 60 +-
drivers/dma/at_hdmac_regs.h | 1 +
drivers/dma/dmaengine.c | 94 +-
drivers/dma/dmatest.c | 40 +
drivers/dma/dw_dmac.c | 50 +-
drivers/dma/dw_dmac_regs.h | 1 +
drivers/dma/fsldma.c | 288 +++-
drivers/dma/fsldma.h | 4 +-
drivers/dma/ioat.c | 202 ---
drivers/dma/ioat/Makefile | 2 +
drivers/dma/{ioat_dca.c => ioat/dca.c} | 13 +-
drivers/dma/ioat/dma.c | 1238 ++++++++++++++
drivers/dma/ioat/dma.h | 337 ++++
drivers/dma/ioat/dma_v2.c | 870 ++++++++++
drivers/dma/ioat/dma_v2.h | 190 +++
drivers/dma/ioat/dma_v3.c | 1220 ++++++++++++++
drivers/dma/ioat/hw.h | 215 +++
drivers/dma/ioat/pci.c | 210 +++
.../dma/{ioatdma_registers.h => ioat/registers.h} | 54 +-
drivers/dma/ioat_dma.c | 1741 --------------------
drivers/dma/ioatdma.h | 165 --
drivers/dma/ioatdma_hw.h | 70 -
drivers/dma/iop-adma.c | 491 +++++-
drivers/dma/iovlock.c | 10 +
drivers/dma/mv_xor.c | 7 +-
drivers/dma/mv_xor.h | 4 +-
drivers/dma/shdma.c | 786 +++++++++
drivers/dma/shdma.h | 64 +
drivers/dma/txx9dmac.c | 24 +-
drivers/dma/txx9dmac.h | 1 +
drivers/idle/i7300_idle.c | 20 +-
drivers/md/Kconfig | 26 +
drivers/md/bitmap.c | 5 +-
drivers/md/md.c | 10 +-
drivers/md/raid0.c | 5 +-
drivers/md/raid10.c | 2 +-
drivers/md/raid5.c | 1484 +++++++++++-------
drivers/md/raid5.h | 28 +-
drivers/mmc/host/atmel-mci.c | 9 +-
include/linux/async_tx.h | 129 ++-
include/linux/dca.h | 11 +-
include/linux/dmaengine.h | 179 ++-
include/linux/pci_ids.h | 10 +
65 files changed, 9137 insertions(+), 3321 deletions(-)
create mode 100644 arch/powerpc/include/asm/fsldma.h
create mode 100644 crypto/async_tx/async_pq.c
create mode 100644 crypto/async_tx/async_raid6_recov.c
create mode 100644 crypto/async_tx/raid6test.c
delete mode 100644 drivers/dma/ioat.c
create mode 100644 drivers/dma/ioat/Makefile
rename drivers/dma/{ioat_dca.c => ioat/dca.c} (98%)
create mode 100644 drivers/dma/ioat/dma.c
create mode 100644 drivers/dma/ioat/dma.h
create mode 100644 drivers/dma/ioat/dma_v2.c
create mode 100644 drivers/dma/ioat/dma_v2.h
create mode 100644 drivers/dma/ioat/dma_v3.c
create mode 100644 drivers/dma/ioat/hw.h
create mode 100644 drivers/dma/ioat/pci.c
rename drivers/dma/{ioatdma_registers.h => ioat/registers.h} (84%)
delete mode 100644 drivers/dma/ioat_dma.c
delete mode 100644 drivers/dma/ioatdma.h
delete mode 100644 drivers/dma/ioatdma_hw.h
create mode 100644 drivers/dma/shdma.c
create mode 100644 drivers/dma/shdma.h
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