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2010-10-11RDMA/cxgb4: Add default_llseek to debugfs filesSteve Wise
Incorporate BKL removal changes. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28RDMA/cxgb4: Fastreg NSMR fixesSteve Wise
- Remove dsgl support - doesn't work in T4. - Wrap the immediate PBL as needed when building it in the wr. - Adjust max pbl depth allowed based on ulptx alignment requirements. - Bump the slots per SQ to 5 to allow up to 128MB fast registers. - Advertise fastreg support by default. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28RDMA/cxgb4: Don't set completion flag for read requestsSteve Wise
Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28RDMA/cxgb4: Set the default TCP send window to 128KBSteve Wise
This helps with large IO throughput. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28RDMA/cxgb4: Use a mutex for QP and EP state transitionsSteve Wise
Move the connection setup/teardown paths to the workq thread removing spin lock/irq disable requirements for these paths. This allows calls down to the LLD for EP and QP state transition actions to be atomic with respect to processing CPL messages coming up from the HW. Namely, calls to rdma_init() and rdma_fini() can now be called with the mutex held avoiding many race conditions with the abort path. The QP spinlock is still used but only to manipulate the qp state. This allows the fastpaths, poll, post_send, and pos_recv, to run in the irq context. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28RDMA/cxgb4: Support on-chip SQsSteve Wise
T4 support on-chip SQs to reduce latency. This patch adds support for this in iw_cxgb4: - Manage ocqp memory like other adapter mem resources. - Allocate user mode SQs from ocqp mem if available. - Map ocqp mem to user process using write combining. - Map PCIE_MA_SYNC reg to user process. Bump uverbs ABI. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28RDMA/cxgb4: Centralize the wait logicSteve Wise
Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28RDMA/cxgb4: debugfs files for dumping active stagsSteve Wise
Add "stags" debugfs file. This is useful for examining the TPTE and PBL entries in adapter memory. It allows scripts to dump just the active entries. Also clean up the "qps" file handlers and shared common code. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28RDMA/cxgb4: Log HW lack-of-resource errorsSteve Wise
This helps debug cases where HW resources are depleted. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28RDMA/cxgb4: Handle CPL_RDMA_TERMINATE messagesSteve Wise
T4 FW sends up CPL_RDMA_TERMINATE to indicate a peer TERM. This triggers the QP moving to TERMINATE state. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28RDMA/cxgb4: Ignore TERMINATE CQEsSteve Wise
T4 incorrectly inserts TERM CQEs into the CQ. Silently ignore them. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28RDMA/cxgb4: Ignore positive return values from cxgb4_*_send() functionsSteve Wise
The cxgb4_*_send() functions return NET_XMIT_ values, which are positive integers or negative errno values. So don't treat positive return values as an error. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28RDMA/cxgb4: Zero out ISGL paddingSteve Wise
The HW design requires zeroing any pad in SGLs. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28RDMA/cxgb4: Don't use null ep ptrSteve Wise
In c4iw_modify_qp() error path, only use qhp->ep if ep is not already set. Otherwise qhp->ep can be NULL and we crash. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-27RDMA/cxgb4: Fix warnings about casts to/from pointers of different sizesRoland Dreier
Fix: drivers/infiniband/hw/cxgb4/qp.c: In function ‘create_qp’: drivers/infiniband/hw/cxgb4/qp.c:147: warning: cast from pointer to integer of different size drivers/infiniband/hw/cxgb4/qp.c: In function ‘rdma_fini’: drivers/infiniband/hw/cxgb4/qp.c:988: warning: cast from pointer to integer of different size drivers/infiniband/hw/cxgb4/qp.c: In function ‘rdma_init’: drivers/infiniband/hw/cxgb4/qp.c:1063: warning: cast from pointer to integer of different size drivers/infiniband/hw/cxgb4/mem.c: In function ‘write_adapter_mem’: drivers/infiniband/hw/cxgb4/mem.c:74: warning: cast from pointer to integer of different size drivers/infiniband/hw/cxgb4/cq.c: In function ‘destroy_cq’: drivers/infiniband/hw/cxgb4/cq.c:58: warning: cast from pointer to integer of different size drivers/infiniband/hw/cxgb4/cq.c: In function ‘create_cq’: drivers/infiniband/hw/cxgb4/cq.c:135: warning: cast from pointer to integer of different size drivers/infiniband/hw/cxgb4/cm.c: In function ‘fw6_msg’: drivers/infiniband/hw/cxgb4/cm.c:2326: warning: cast to pointer from integer of different size by casting pointers to unsigned long instead of u64. Reported-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-27Fix pktcdvd ioctl dev_minor range checkDan Rosenberg
The PKT_CTRL_CMD_STATUS device ioctl retrieves a pointer to a pktcdvd_device from the global pkt_devs array. The index into this array is provided directly by the user and is a signed integer, so the comparison to ensure that it falls within the bounds of this array will fail when provided with a negative index. This can be used to read arbitrary kernel memory or cause a crash due to an invalid pointer dereference. This can be exploited by users with permission to open /dev/pktcdvd/control (on many distributions, this is readable by group "cdrom"). Signed-off-by: Dan Rosenberg <dan.j.rosenberg@gmail.com> [ Rather than add a cast, just make the function take the right type -Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-27MN10300: Default config choice GDBSTUB_TTYSM0 should be GDBSTUB_ON_TTYSM0David Howells
The configuration choice for the port on which the GDB stub listens has a default of GDBSTUB_TTYSM0, but this should be GDBSTUB_ON_TTYSM0 to match the option. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-27Merge branch 'for-linus' of ↵Linus Torvalds
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: RDMA/cxgb3: Turn off RX coalescing for iWARP connections
2010-09-27Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* master.kernel.org:/home/rmk/linux-2.6-arm: (28 commits) ARM: 6411/1: vexpress: set RAM latencies to 1 cycle for PL310 on ct-ca9x4 tile ARM: 6409/1: davinci: map sram using MT_MEMORY_NONCACHED instead of MT_DEVICE ARM: 6408/1: omap: Map only available sram memory ARM: 6407/1: mmu: Setup MT_MEMORY and MT_MEMORY_NONCACHED L1 entries ARM: pxa: remove pr_<level> uses of KERN_<level> ARM: pxa168fb: clear enable bit when not active ARM: pxa: fix cpu_is_pxa*() not expanding to zero when not configured ARM: pxa168: fix corrected reset vector ARM: pxa: Use PIO for PI2C communication on Palm27x ARM: pxa: Fix Vpac270 gpio_power for MMC ARM: 6401/1: plug a race in the alignment trap handler ARM: 6406/1: at91sam9g45: fix i2c bus speed leds: leds-ns2: fix locking ARM: dove: fix __io() definition to use bus based offset dmaengine: fix interrupt clearing for mv_xor ARM: kirkwood: Unbreak PCIe I/O port ARM: Fix build error when using KCONFIG_CONFIG ARM: 6383/1: Implement phys_mem_access_prot() to avoid attributes aliasing ARM: 6400/1: at91: fix arch_gettimeoffset fallout ARM: 6398/1: add proc info for ARM11MPCore/Cortex-A9 from ARM ...
2010-09-27Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs: net/9p: fix memory handling/allocation in rdma_request()
2010-09-27Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bpLinus Torvalds
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp: amd64_edac: Fix driver module removal
2010-09-27Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: TOMOYO: Don't abuse sys_getpid(), sys_getppid()
2010-09-27Merge branch 'drm-intel-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel * 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel: drm/i915/sdvo: Handle unsupported GET_SUPPORTED_ENHANCEMENTS gracefully drm/i915/sdvo: Cleanup connector on error path drm/i915: Fix 945GM regression in e259befd
2010-09-27Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: mmc: sdhci-s3c: fix NULL ptr access in sdhci_s3c_remove mmc: sdhci-s3c: fix incorrect spinlock usage after merge mmc: MAINTAINERS: add myself as MMC maintainer
2010-09-27Merge branch 'urgent' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6 * 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6: pcmcia: pd6729: Fix error path pcmcia: preserve configuration information if request_io fails partly
2010-09-27Merge git://git.infradead.org/iommu-2.6Linus Torvalds
* git://git.infradead.org/iommu-2.6: intel-iommu: Use symbolic values instead of magic numbers in Lenovo w/a intel-iommu: Abort IOMMU setup for igfx if BIOS gave no shadow GTT space
2010-09-27Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86/amd-iommu: Fix rounding-bug in __unmap_single x86/amd-iommu: Work around S3 BIOS bug x86/amd-iommu: Set iommu configuration flags in enable-loop x86, setup: Fix earlyprintk=serial,0x3f8,115200 x86, setup: Fix earlyprintk=serial,ttyS0,115200
2010-09-27Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf, x86: Catch spurious interrupts after disabling counters tracing/x86: Don't use mcount in kvmclock.c tracing/x86: Don't use mcount in pvclock.c
2010-09-27mn10300: check __get_user/__put_user results...Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-27mn10300: get rid of set_fs(USER_DS) in sigframe setupAl Viro
It really has no business being there; short of a serious kernel bug we should already have USER_DS at that point. It shouldn't have been done on x86 either... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-27mn10300: ->restart_block.fn needs to be reset on sigreturnAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-27mn10300: prevent double syscall restartsAl Viro
set ->orig_d0 to -1, same as what sigreturn does Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-27mn10300: avoid SIGSEGV delivery loopAl Viro
force_sigsegv() is there for purpose... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-27alpha: __get_user/__put_user results need to be checked...Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-27alpha: switch osf_sigprocmask() to use of sigprocmask()Al Viro
get rid of a useless wrapper, while we are at it Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-27RDMA/cxgb3: Turn off RX coalescing for iWARP connectionsSteve Wise
The HW by default has RX coalescing on. For iWARP connections, this causes a 100ms delay in connection establishement due to the ingress MPA Start message being stalled in HW. So explicitly turn RX coalescing off when setting up iWARP connections. This was causing very bad performance for NP64 gather operations using Open MPI, due to the way it sets up connections on larger jobs. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Cc: <stable@kernel.org> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-27ARM: 6411/1: vexpress: set RAM latencies to 1 cycle for PL310 on ct-ca9x4 tileWill Deacon
The PL310 on the ct-ca9x4 tile for the Versatile Express does not need to add additional latency when accessing its cache RAMs. Unfortunately, the boot monitor sets this up for an 8-cycle delay on reads and writes, resulting in greatly reduced memory performance when the L2 cache is enabled. This patch sets the L2 RAM latencies to the correct value of 1 cycle on the ct-ca9x4 tile before enabling the L2 cache. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-09-27net/9p: fix memory handling/allocation in rdma_request()Davidlohr Bueso
Return -ENOMEM when erroring on kmalloc and fix memory leaks when returning on error. Signed-off-by: Davidlohr Bueso <dave@gnu.org> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2010-09-27amd64_edac: Fix driver module removalBorislav Petkov
f4347553b30ec66530bfe63c84530afea3803396 removed the edac polling mechanism in favor of using a notifier chain for conveying MCE information to edac. However, the module removal path didn't test whether the driver had setup the polling function workqueue at all and the rmmod process was hanging in the kernel at try_to_del_timer_sync() in the cancel_delayed_work() path, trying to cancel an uninitialized work struct. Fix that by adding a balancing check to the workqueue removal path. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2010-09-27TOMOYO: Don't abuse sys_getpid(), sys_getppid()Ben Hutchings
System call entry functions sys_*() are never to be called from general kernel code. The fact that they aren't declared in header files should have been a clue. These functions also don't exist on Alpha since it has sys_getxpid() instead. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
2010-09-26mmc: sdhci-s3c: fix NULL ptr access in sdhci_s3c_removeMarek Szyprowski
If not all clocks have been defined in platform data, the driver will cause a null pointer dereference when it is removed. This patch fixes this issue. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2010-09-26mmc: sdhci-s3c: fix incorrect spinlock usage after mergeMarek Szyprowski
In the commit f522886e202a34a2191dd5d471b3c4d46410a9a0 a merge conflict in the sdhci-s3c driver been fixed. However the fix used incorrect spinlock operation - it caused a race with sdhci interrupt service. The correct way to solve it is to use spin_lock_irqsave/irqrestore() calls. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2010-09-26mmc: MAINTAINERS: add myself as MMC maintainerChris Ball
Signed-off-by: Chris Ball <cjb@laptop.org> Cc: Pierre Ossman <pierre-list@ossman.eu> Cc: <linux-mmc@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2010-09-26pcmcia: pd6729: Fix error pathRahul Ruikar
In error return path call pci_disable_device() which was enabled earlier. Signed-off-by: Rahul Ruikar <rahul.ruikar@gmail.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2010-09-25alpha: fix usp value in multithreaded coredumpsAl Viro
rdusp() gives us the right value only for the current thread... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-25alpha: fix hae_cache race in RESTORE_ALLAl Viro
We want interrupts disabled on all paths leading to RESTORE_ALL; otherwise, we are risking an IRQ coming between the updates of alpha_mv->hae_cache and *alpha_mv->hae_register and set_hae() within the IRQ getting badly confused. RESTORE_ALL used to play with disabling IRQ itself, but that got removed back in 2002, without making sure we had them disabled on all paths. It's cheaper to make sure we have them disabled than to revert to original variant... Remove the detritus left from that commit back in 2002; we used to need a reload of $0 and $1 since swpipl would change those, but doing that had become pointless when we stopped doing swpipl in there... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-25Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: prevent merges of discard and write requests
2010-09-25Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ALSA: sound/pci/rme9652: prevent reading uninitialized stack memory ALSA: hda - Fix auto-parse of SPDIF input of Realtek codecs ASoC: Fix multi-componentism ASoC: Fix soc-cache buffer overflow bug ALSA: oxygen: fix analog capture on Claro halo cards ALSA: hda - Add Dell Latitude E6400 model quirk ASoC: fix clkdev API usage in sh/migor.c
2010-09-25Avoid pgoff overflow in remap_file_pagesLarry Woodman
Thomas Pollet noticed that the remap_file_pages() system call in fremap.c has a potential overflow in the first part of the if statement below, which could cause it to process bogus input parameters. Specifically the pgoff + size parameters could be wrap thereby preventing the system call from failing when it should. Reported-by: Thomas Pollet <thomas.pollet@gmail.com> Signed-off-by: Larry Woodman <lwoodman@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-25Merge branch 'fix/hda' into for-linusTakashi Iwai
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