Commit Graph

1222 Commits

Author SHA1 Message Date
Linus Torvalds
6db602d447 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB/ehca: SRQ fixes to enable IPoIB CM
  IB/ehca: Fix Small QP regressions
2007-08-31 20:40:37 -07:00
Joachim Fenkes
5ff70cac3e IB/ehca: SRQ fixes to enable IPoIB CM
Fix ehca SRQ support so that IPoIB connected mode works:

 - Report max_srq > 0 if SRQ is supported
 - Report "last wqe reached" asynchronous event when base QP dies;
   this is required by the IB spec and IPoIB CM relies on receiving it
   when cleaning up.

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-08-31 13:58:04 -07:00
Stefan Roscher
fecea0ab34 IB/ehca: Fix Small QP regressions
The new Small QP code had a few bugs that would also make it trigger
for non-Small QPs.  Fix them.

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-08-31 13:56:42 -07:00
Divy Le Ray
5fbf816fe7 cxgb3 - Fix dev->priv usage
cxgb3 used netdev_priv() and dev->priv for different purposes.
In 2.6.23, netdev_priv() == dev->priv, cxgb3 needs a fix.
This patch is a partial backport of Dave Miller's changes in the
net-2.6.24 git branch.

Without this fix, cxgb3 crashes on 2.6.23.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31 07:29:08 -04:00
Ilpo Järvinen
fe11cb6ba4 IB/mlx4: Incorrect semicolon after if statement
A stray semicolon makes us inadvertently ignore the value of err.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-08-15 20:24:06 -07:00
Jack Morgenstein
6958e827f1 IPoIB: Fix leak in ipoib_transport_dev_init() error path
ipoib_transport_dev_init() calls ipoib_cm_dev_init(), so it needs to
call ipoib_cm_dev_cleanup() to unwind that on the error path.

Found by Dotan Barak of Mellanox.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-08-07 12:40:56 -07:00
Vu Pham
198919151d IB/mlx4: Fix opcode returned in RDMA read completion
Current code has a cut-and-paste error and returns IB_WC_SEND when it
should return IB_WC_RDMA_READ.

Signed-off-by: Vu Pham <vu@mellanox.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-08-03 14:29:06 -07:00
Raghava Kondapalli
3d1ff48da7 IB/srp: Add OUI for new Cisco targets
New Cisco IB SRP targets use the Cisco OUI 00-1b-0d but still need the
Topspin workarounds.  Add this OUI to srp_target_is_topspin().

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-08-03 10:45:18 -07:00
Roland Dreier
5d7cbfd631 IB/srp: Wrap OUI checking for workarounds in helper functions
Wrap the checking for Mellanox and Topspin OUIs to decide whether to
use a workaround into helper functions.  This will make it cleaner to
add a new OUI to check (as we need to do now that some targets with a
Cisco OUI still need the Topspin workarounds).

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-08-03 10:45:18 -07:00
Steve Wise
699924b1e1 RDMA/cxgb3: Always call low level send function via cxgb3_ofld_send()
This avoids deadlocks.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-08-03 10:45:18 -07:00
Dotan Barak
92ddc447ce IB: Move the macro IB_UMEM_MAX_PAGE_CHUNK() to umem.c
After moving the definition of struct ib_umem_chunk from ib_verbs.h to
ib_umem.h there isn't any reason for the macro IB_UMEM_MAX_PAGE_CHUNK
to stay in ib_verbs.h.  Move the macro to umem.c, the only place where
it is used.

Signed-off-by: Dotan Barak <dotanb@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-08-03 10:45:18 -07:00
Sean Hefty
38d5af9565 IB/mad: Fix address handle leak in mad_rmpp
The address handle associated with dual-sided RMPP direction switch
ACKs is never destroyed.  Free the AH for ACKs which fall into this
category.

Problem was reported by Dotan Barak <dotanb@dev.mellanox.co.il>.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-08-03 10:45:17 -07:00
Hal Rosenstock
8fc394b197 IB/mad: agent_send_response() should be void
Nothing looks at the return value of agent_send_response(), so there's
no point in returning anything.

Signed-off-by: Hal Rosenstock <hal.rosenstock@gmail.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-08-03 10:45:17 -07:00
Hal Rosenstock
86dfbecdea IB/mad: Fix memory leak in switch handling in ib_mad_recv_done_handler()
If agent_send_response() returns an error, we shouldn't do anything
differently than if it succeeds; setting response to NULL just means
that the response buffer gets leaked.

Signed-off-by: Suresh Shelvapille <suri@baymicrosystems.com>
Signed-off-by: Hal Rosenstock <hal.rosenstock@gmail.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-08-03 10:45:17 -07:00
Hal Rosenstock
445d68070c IB/mad: Fix error path if response alloc fails in ib_mad_recv_done_handler()
If ib_mad_recv_done_handler() fails to allocate response, then it just
printed a warning and continued, which leads to an oops if the MAD is
being handled for a switch device, because the switch code uses
response without checking for NULL.  Fix this by bailing out of the
function if the allocation fails.

Signed-off-by: Suresh Shelvapille <suri@baymicrosystems.com>
Signed-off-by: Hal Rosenstock <hal.rosenstock@gmail.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-08-03 10:45:17 -07:00
Roland Dreier
5399891052 IB/sa: Don't need to check for default P_Key twice
Now that ib_find_pkey() ignores the membership bit of P_Keys, there's no
need for ib_sa to look for both 0x7fff and 0xffff in a port's P_Key table.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-08-03 10:45:17 -07:00
Moni Shoua
36026ecc20 IB/core: Ignore membership bit in ib_find_pkey()
ib_find_pkey() is used as a replacement for ib_find_cached_pkey(), and
the original function ignored the membership bit when searching for a
P_Key, so ib_find_pkey() should ignore the bit too.

In particular, IPoIB turns on the P_Key membership bit of limited
membership P_Keys when creating a child interface and looks for the
full membership P_key.  This broke if a port was a partial member of a
partition when IPoIB switched from ib_find_cached_pkey() to
ib_find_pkey(), and this change fixes things again.

Signed-off-by: Moni Shoua <monis@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-08-03 10:45:17 -07:00
Eddy L O Jansson
0e6ff1580f in-string typos of "error"
One patch for two trivial typos of 'error' with three R's, appearing in message strings.

There's a bunch more of the same in comments, not dealt with here.

Signed-off-by: Eddy L O Jansson <eddy@klopper.net>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-31 15:39:40 -07:00
Linus Torvalds
4dcf39c6cc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB/ipath: Workaround problem of errormask register being overwritten
  IB/ipath: Fix some issues with buffer cancel and sendctrl register update
  IB/ipath: Use faster put_tid_2 routine after initialization
  IB/ipath: Remove unsafe fastrcvint code from interrupt handler
  IB/ehca: Move extern declarations from .c files to .h files
  IB/mlx4: Whitespace fix
  IB/ehca: Fix include order to better match kernel style
  mlx4_core: Remove kfree() in mlx4_mr_alloc() error flow
  RDMA/amso1100: Initialize the wait_queue_head_t in the c2_qp structure
2007-07-30 16:36:33 -07:00
Dave Olson
78d1e02fac IB/ipath: Workaround problem of errormask register being overwritten
On some system hardware, we are seeing moderately common cases of the
chip errormask register being overwritten due to a chip bug in iba6120
that is triggered by a vendor-specific PCIe broadcast message.  This
patch merely checks periodically, and corrects it if needed (the
overwrite can cause us to not get error and hardware error
interrupts).  Also, make dd->ipath_errormask the one, true canonical
source for kr_errormask, and remove references to ipath_ignorederrs as
it is currently unused.

Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: John Gregor <john.gregor@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-30 13:16:46 -07:00
Dave Olson
3810f2a84e IB/ipath: Fix some issues with buffer cancel and sendctrl register update
There was confused use of INFINIPATH_S_PIOBUFAVAILUPD (value) and
IPATH_S_PIOBUFAVAILUPD (bit position).  Also, some callers of
ipath_cancel_sends() need kr_sendctrl restored, and some want to do it
later.

Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-30 13:16:46 -07:00
Dave Olson
cf5b60aa40 IB/ipath: Use faster put_tid_2 routine after initialization
At one time the ipath_minrev field was initialized prior to the
ipath_init_iba6120_funcs call, but that is no longer the case, so the
slower put_tid routine was always being used.

Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-30 13:16:46 -07:00
Dave Olson
f17fddc9e2 IB/ipath: Remove unsafe fastrcvint code from interrupt handler
The fastrcvint code's purpose was to avoid reading the interrupt
status if kernel packets were in the receive queue (to reduce
overhead).  Because intstatus was not read, we could miss the error
interrupt bit indicating freeze mode, since it only delivers a single
interrupt, even if still pending after intclear is written.

This patch removes that unsafe optimization.

Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-30 13:16:45 -07:00
Linus Torvalds
a6ce22a5f6 Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: (28 commits)
  [SCSI] mpt fusion: Changes in mptctl.c for logging support
  [SCSI] mpt fusion: Changes in mptfc.c mptlan.c mptsas.c and mptspi.c for logging support
  [SCSI] mpt fusion: Changes in mptscsih.c for logging support
  [SCSI] mpt fusion: Changes in mptbase.c for logging support
  [SCSI] mpt fusion: logging support in Kconfig, Makefile, mptbase.h and addition of mptdebug.h
  [SCSI] libsas: Fix potential NULL dereference in sas_smp_get_phy_events()
  [SCSI] bsg: Fix build for CONFIG_BLOCK=n
  [SCSI] aacraid: fix Sunrise Lake reset handling
  [SCSI] aacraid: add SCSI SYNCHONIZE_CACHE range checking
  [SCSI] add easyRAID to the no report luns blacklist
  [SCSI] advansys: lindent and other large, uninteresting changes
  [SCSI] aic79xx, aic7xxx: Fix incorrect width setting
  [SCSI] qla2xxx: fix to honor ignored parameters in sysfs attributes
  [SCSI] aacraid: draw line in sand, sundry cleanup and version update
  [SCSI] iscsi_tcp: Turn off bounce buffers
  [SCSI] libiscsi: fix cmd seqeunce number checking
  [SCSI] iscsi_tcp, ib_iser Enable module refcounting for iscsi host template
  [SCSI] libiscsi: make sure session is not blocked when removing host
  [SCSI] libsas: Remove PCI dependencies
  [SCSI] simscsi: convert to use the data buffer accessors
  ...
2007-07-29 17:22:03 -07:00
Alexey Dobriyan
4e950f6f01 Remove fs.h from mm.h
Remove fs.h from mm.h. For this,
 1) Uninline vma_wants_writenotify(). It's pretty huge anyway.
 2) Add back fs.h or less bloated headers (err.h) to files that need it.

As result, on x86_64 allyesconfig, fs.h dependencies cut down from 3929 files
rebuilt down to 3444 (-12.3%).

Cross-compile tested without regressions on my two usual configs and (sigh):

alpha              arm-mx1ads        mips-bigsur          powerpc-ebony
alpha-allnoconfig  arm-neponset      mips-capcella        powerpc-g5
alpha-defconfig    arm-netwinder     mips-cobalt          powerpc-holly
alpha-up           arm-netx          mips-db1000          powerpc-iseries
arm                arm-ns9xxx        mips-db1100          powerpc-linkstation
arm-assabet        arm-omap_h2_1610  mips-db1200          powerpc-lite5200
arm-at91rm9200dk   arm-onearm        mips-db1500          powerpc-maple
arm-at91rm9200ek   arm-picotux200    mips-db1550          powerpc-mpc7448_hpc2
arm-at91sam9260ek  arm-pleb          mips-ddb5477         powerpc-mpc8272_ads
arm-at91sam9261ek  arm-pnx4008       mips-decstation      powerpc-mpc8313_rdb
arm-at91sam9263ek  arm-pxa255-idp    mips-e55             powerpc-mpc832x_mds
arm-at91sam9rlek   arm-realview      mips-emma2rh         powerpc-mpc832x_rdb
arm-ateb9200       arm-realview-smp  mips-excite          powerpc-mpc834x_itx
arm-badge4         arm-rpc           mips-fulong          powerpc-mpc834x_itxgp
arm-carmeva        arm-s3c2410       mips-ip22            powerpc-mpc834x_mds
arm-cerfcube       arm-shannon       mips-ip27            powerpc-mpc836x_mds
arm-clps7500       arm-shark         mips-ip32            powerpc-mpc8540_ads
arm-collie         arm-simpad        mips-jazz            powerpc-mpc8544_ds
arm-corgi          arm-spitz         mips-jmr3927         powerpc-mpc8560_ads
arm-csb337         arm-trizeps4      mips-malta           powerpc-mpc8568mds
arm-csb637         arm-versatile     mips-mipssim         powerpc-mpc85xx_cds
arm-ebsa110        i386              mips-mpc30x          powerpc-mpc8641_hpcn
arm-edb7211        i386-allnoconfig  mips-msp71xx         powerpc-mpc866_ads
arm-em_x270        i386-defconfig    mips-ocelot          powerpc-mpc885_ads
arm-ep93xx         i386-up           mips-pb1100          powerpc-pasemi
arm-footbridge     ia64              mips-pb1500          powerpc-pmac32
arm-fortunet       ia64-allnoconfig  mips-pb1550          powerpc-ppc64
arm-h3600          ia64-bigsur       mips-pnx8550-jbs     powerpc-prpmc2800
arm-h7201          ia64-defconfig    mips-pnx8550-stb810  powerpc-ps3
arm-h7202          ia64-gensparse    mips-qemu            powerpc-pseries
arm-hackkit        ia64-sim          mips-rbhma4200       powerpc-up
arm-integrator     ia64-sn2          mips-rbhma4500       s390
arm-iop13xx        ia64-tiger        mips-rm200           s390-allnoconfig
arm-iop32x         ia64-up           mips-sb1250-swarm    s390-defconfig
arm-iop33x         ia64-zx1          mips-sead            s390-up
arm-ixp2000        m68k              mips-tb0219          sparc
arm-ixp23xx        m68k-amiga        mips-tb0226          sparc-allnoconfig
arm-ixp4xx         m68k-apollo       mips-tb0287          sparc-defconfig
arm-jornada720     m68k-atari        mips-workpad         sparc-up
arm-kafa           m68k-bvme6000     mips-wrppmc          sparc64
arm-kb9202         m68k-hp300        mips-yosemite        sparc64-allnoconfig
arm-ks8695         m68k-mac          parisc               sparc64-defconfig
arm-lart           m68k-mvme147      parisc-allnoconfig   sparc64-up
arm-lpd270         m68k-mvme16x      parisc-defconfig     um-x86_64
arm-lpd7a400       m68k-q40          parisc-up            x86_64
arm-lpd7a404       m68k-sun3         powerpc              x86_64-allnoconfig
arm-lubbock        m68k-sun3x        powerpc-cell         x86_64-defconfig
arm-lusl7200       mips              powerpc-celleb       x86_64-up
arm-mainstone      mips-atlas        powerpc-chrp32

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-29 17:09:29 -07:00
Hoang-Nam Nguyen
1655fc2e12 IB/ehca: Move extern declarations from .c files to .h files
Make sure declarations stay in sync with definitions by keeping all 
extern declarations in common .h files.

Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-28 21:47:53 -07:00
Roland Dreier
e0f5d99e8d IB/mlx4: Whitespace fix
Remove extra dumb-looking blank line that snuck in somehow.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-28 20:52:44 -07:00
Hoang-Nam Nguyen
05d989f948 IB/ehca: Fix include order to better match kernel style
Include <rdma/...> headers after <asm/...> headers.

Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-28 08:36:32 -07:00
Tom Tucker
4e8e6ee380 RDMA/amso1100: Initialize the wait_queue_head_t in the c2_qp structure
Fix a crash if the driver has to wait for a QP reference to be dropped
when destroying the QP.

Signed-off-by: Ethan Burns <eaburns@iol.unh.edu>
Acked-by: Tom Tucker <tom@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-28 08:06:40 -07:00
Mike Christie
7974392c0b [SCSI] iscsi_tcp, ib_iser Enable module refcounting for iscsi host template
This prevents the iscsi modules from being unloaded while
there are active mounts from an iscsi target.

Signed-off-by: Olaf Kirch <olaf.kirch@oracle.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-07-27 09:11:45 -04:00
Stefan Roscher
e2f81daf23 IB/ehca: Support small QP queues
eHCA2 supports QP queues that can be as small as 512 bytes. This
greatly reduces memory overhead for consumers that use lots of QPs
with small queues (e.g. RDMA-only QPs). Apart from dealing with
firmware, this code needs to manage bite-sized chunks of kernel pages,
making sure that no kernel page is shared between different protection
domains.

Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
2007-07-20 21:19:47 -07:00
Joachim Fenkes
0c10f7b79b IB/ehca: Make internal_create/destroy_qp() static
They're only used in ehca_qp.c, so make them static to that file.

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-20 21:19:44 -07:00
Hoang-Nam Nguyen
51d2bfbddb IB/ehca: Move ehca2ib_return_code() out of line
ehca2ib_return_code() is not used in any fast path, and making it
non-inline saves ~1.5K of code.

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-20 21:19:44 -07:00
Hoang-Nam Nguyen
633a5aedae IB/ehca: Generate async event when SRQ limit reached
Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-20 21:19:44 -07:00
Hoang-Nam Nguyen
5bb7d9290c IB/ehca: Support large page MRs
Add support for MR pages larger than 4K on eHCA2. This reduces
firmware memory consumption.  If enabled via the mr_largepage module
parameter, the MR page size will be determined based on the MR length
and the hardware capabilities -- if the MR is >= 16M, 16M pages are
used, for example.

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-20 21:19:43 -07:00
Roland Dreier
23f1b38481 IB/mlx4: Fix error path in create_qp_common()
The error handling code at err_wrid in create_qp_common() does not
handle a userspace QP attached to an SRQ correctly, since it ends up
in the else clause of the if statement.  This means it tries to
kfree() the uninitialized qp->sq.wrid and qp->rq.wrid pointers.  Fix
this so we only free the wrid arrays for kernel QPs.

Pointed out by Michael S. Tsirkin <mst@dev.mellanox.co.il>.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-20 21:19:43 -07:00
Michael S. Tsirkin
c1f74958db IB/mthca: Change command token on timeout
The FW command token is currently only updated on a command completion
event. This means that on command timeout, the same token will be
reused for new command, which results in a mess if the timed out
command *does* eventually complete.

Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-20 21:19:43 -07:00
Arthur Jones
bd63104811 IB/ipath: Remove ipath_layer dead code
The ipath_layer.[ch] code was an attempt to provide a single interface
for the ipath verbs and ipath_ether code to use.  As verbs
functionality increased, the layer's functionality became insufficient
and the verbs code broke away to interface directly to the driver.
The failed attempt to get ipath_ether upstream was the final nail in
the coffin and now it sits quietly in a dark kernel.org corner waiting
for someone to notice the smell and send it along to it's final
resting place.  Roland Dreier was that someone -- this patch expands
on his work...

Signed-off-by: Arthur Jones <arthur.jones@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-20 21:19:43 -07:00
Florin Malita
f5b404317b IB/mlx4: Fix leaks in __mlx4_ib_modify_qp
Temporarily allocated struct mlx4_qp_context *context is leaked by
several error paths.  The patch takes advantage of the return value
'err' being preinitialized to -EINVAL.

Spotted by Coverity (CID 1768).

Signed-off-by: Florin Malita <fmalita@gmail.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-20 21:19:43 -07:00
Paul Mundt
20c2df83d2 mm: Remove slab destructors from kmem_cache_create().
Slab destructors were no longer supported after Christoph's
c59def9f22 change. They've been
BUGs for both slab and slub, and slob never supported them
either.

This rips out support for the dtor pointer from kmem_cache_create()
completely and fixes up every single callsite in the kernel (there were
about 224, not including the slab allocator definitions themselves,
or the documentation references).

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-20 10:11:58 +09:00
Yoann Padioleau
dd00cc486a some kmalloc/memset ->kzalloc (tree wide)
Transform some calls to kmalloc/memset to a single kzalloc (or kcalloc).

Here is a short excerpt of the semantic patch performing
this transformation:

@@
type T2;
expression x;
identifier f,fld;
expression E;
expression E1,E2;
expression e1,e2,e3,y;
statement S;
@@

 x =
- kmalloc
+ kzalloc
  (E1,E2)
  ...  when != \(x->fld=E;\|y=f(...,x,...);\|f(...,x,...);\|x=E;\|while(...) S\|for(e1;e2;e3) S\)
- memset((T2)x,0,E1);

@@
expression E1,E2,E3;
@@

- kzalloc(E1 * E2,E3)
+ kcalloc(E1,E2,E3)

[akpm@linux-foundation.org: get kcalloc args the right way around]
Signed-off-by: Yoann Padioleau <padator@wanadoo.fr>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Acked-by: Russell King <rmk@arm.linux.org.uk>
Cc: Bryan Wu <bryan.wu@analog.com>
Acked-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Dave Airlie <airlied@linux.ie>
Acked-by: Roland Dreier <rolandd@cisco.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Acked-by: Pierre Ossman <drzeus-list@drzeus.cx>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: "David S. Miller" <davem@davemloft.net>
Acked-by: Greg KH <greg@kroah.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:50 -07:00
Roland Dreier
43509d1fec IB/mthca: Simplify use of size0 in work request posting
Current code sets size0 to 0 at the start of work request posting
functions and then handles size0 == 0 specially within the loop over
work requests.  Change this so size0 is set along with f0 the first
time through the loop (when nreq == 0).  This makes the code easier to
understand by making it clearer that f0 and size0 are always
initialized if nreq != 0 without having to know that size0 == 0
implies nreq == 0.

Also annotate size0 with uninitialized_var() so that this doesn't
introduce a new compiler warning.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-18 13:28:29 -07:00
Roland Dreier
e535c699bf IB/mthca: Factor out setting WQE UD segment entries
Factor code to set UD entries out of the work request posting
functions into inline functions set_tavor_ud_seg() and
set_arbel_ud_seg().  This doesn't change the generated code in any
significant way, and makes the source easier on the eyes.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-18 13:21:14 -07:00
Roland Dreier
400ddc11eb IB/mthca: Factor out setting WQE remote address and atomic segment entries
Factor code to set remote address and atomic segment entries out of the
work request posting functions into inline functions set_raddr_seg()
and set_atomic_seg().  This doesn't change the generated code in any
significant way, and makes the source easier on the eyes.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-18 12:55:42 -07:00
Roland Dreier
0fbfa6a906 IB/mlx4: Factor out setting other WQE segments
Factor code to set remote address, atomic and datagram segments out of
mlx4_ib_post_send() into small helper functions.  This doesn't change
the generated code in any significant way, and makes the source easier
on the eyes.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-18 11:47:55 -07:00
Roland Dreier
d420d9e32f IB/mlx4: Factor out setting WQE data segment entries
Factor code to set data segment entries out of mlx4_ib_post_send()
into set_data_seg().  This cleans up the code and lets the compiler do
a better job -- on x86_64:

add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-16 (-16)
function                                     old     new   delta
mlx4_ib_post_send                           1598    1582     -16

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-18 11:46:27 -07:00
Roland Dreier
80885456e8 IB/mthca: Factor out setting WQE data segment entries
Factor code to set data segment entries out of the work request
posting functions into inline functions mthca_set_data_seg() and
mthca_set_data_seg_inval().  This makes the code more readable and
also allows the compiler to do a better job -- on x86_64:

add/remove: 0/0 grow/shrink: 0/6 up/down: 0/-69 (-69)
function                                     old     new   delta
mthca_arbel_post_srq_recv                    373     369      -4
mthca_arbel_post_receive                     570     562      -8
mthca_tavor_post_srq_recv                    520     508     -12
mthca_tavor_post_send                       1344    1330     -14
mthca_arbel_post_send                       1481    1467     -14
mthca_tavor_post_receive                     792     775     -17

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-18 11:30:34 -07:00
Roland Dreier
7f5eb9bb8c IB/mlx4: Return receive queue sizes for userspace QPs from query QP
Return the receive queue sizes for both userspace QPs and kernel Qps
(not just kernel QPs) from mlx4_ib_query_qp().  Also zero the send
queue sizes for userspace QPs to avoid a possible information leak,
and set the max_inline_data for kernel QPs to 0 since inline sends are
not supported for kernel QPs.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-17 20:59:02 -07:00
Dotan Barak
8f076531cd RDMA/cma: Remove local write permission from QP access flags
Local write permission makes no sense as part of the QP access flags,
since the access flags only control what the remote end of the
connection is allowed to do.  Remove the code in the RDMA CM that
initializes qp_access_flags with IB_ACCESS_LOCAL_WRITE.

Signed-off-by: Dotan Barak <dotanb@mellanox.co.il>
Acked-by: Sean Hefty <sean.hefty@intel.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-17 20:30:22 -07:00
Roland Dreier
6d7d080e9f IB/mthca: Use uninitialized_var() for f0
Commit 9db48926 ("drivers/infiniband/hw/mthca/mthca_qp: kill uninit'd
var warning") added "= 0" to the declarations of f0 to shut up gcc
warnings.  However, there's no point in making the code bigger by
initializing f0 to a random value just to get rid of a warning;
setting f0 to 0 is no safer than just using uninitialized_var(), which
documents the situation better and gives smaller code too.  For example, 
on x86_64:

add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-16 (-16)
function                                     old     new   delta
mthca_tavor_post_send                       1352    1344      -8
mthca_arbel_post_send                       1489    1481      -8

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-17 19:30:51 -07:00