- 16 Feb, 2007 40 commits
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Sean Hefty authored
Extend rdma_cm to support multicast communication. Multicast support is added to the existing RDMA_PS_UDP port space, as well as a new RDMA_PS_IPOIB port space. The latter port space allows joining the multicast groups used by IPoIB, which enables offloading IPoIB traffic to a separate QP. The port space determines the signature used in the MGID when joining the group. The newly added RDMA_PS_IPOIB also allows for unicast operations, similar to RDMA_PS_UDP. Supporting the RDMA_PS_IPOIB requires changing how UD QPs are initialized, since we can no longer assume that the qkey is constant. This requires saving the Q_Key to use when attaching to a device, so that it is available when creating the QP. The Q_Key information is exported to the user through the existing rdma_init_qp_attr() interface. Multicast support is also exported to userspace through the rdma_ucm. Signed-off-by:Roland Dreier <rolandd@cisco.com>
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Sean Hefty authored
The IB SA tracks multicast join/leave requests on a per port basis and does not do any reference counting: if two users of the same port join the same group, and one leaves that group, then the SA will remove the port from the group even though there is one user who wants to stay a member left. Therefore, in order to support multiple users of the same multicast group from the same port, we need to perform reference counting locally. To do this, add an multicast submodule to ib_sa to perform reference counting of multicast join/leave operations. Modify ib_ipoib (the only in-kernel user of multicast) to use the new interface. Signed-off-by: -
Michael S. Tsirkin authored
ipoib_cm_alloc_rx_skb() might be called from IRQ context, so it must use dev_kfree_skb_any(), not kfree_skb(). Signed-off-by:
Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by:
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Steve Wise authored
Remove the Open Grid Computing copyright. It shouldn't be there. Signed-off-by:
Steve Wise <swise@opengridcomputing.com> Signed-off-by:
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Steve Wise authored
For T3B devices, mark user QP in error once we transition to TERMINATE. Signed-off-by:
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Steve Wise authored
iwcm iw_cm_id destruction race condition fixes: - iwcm_deref_id() always wakes up if there's another reference. - clean up race condition in cm_work_handler(). - create static void free_cm_id() which deallocs the work entries and then kfrees the cm_id memory. This reduces code replication. - rem_ref() if this is the last reference -and- the IWCM owns freeing the cm_id, then free it. Signed-off-by:
Tom Tucker <tom@opengridcomputing.com> Acked-by:
Krishna Kumar <krkumar2@in.ibm.com> Signed-off-by:
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Hoang-Nam Nguyen authored
Set the port phys state as returned from ehca_query_port() to LINK_UP. ehca actually represents a logical HCA, whose phys/link state always is LINK_UP. Signed-off-by:
Hoang-Nam Nguyen <hnguyen@de.ibm.com> Signed-off-by:
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Hoang-Nam Nguyen authored
Allow users to en/disable scaling code when loading ib_ehca module, rather than requiring the module to be rebuilt to change the setting. Signed-off-by:
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Hoang-Nam Nguyen authored
Fix a race condition in find_next_cpu_online() and some other locking issues in ehca scaling code. Signed-off-by:
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Hoang-Nam Nguyen authored
Rework ehca interrupt handling to avoid/reduce missed irq events. Signed-off-by:
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Roland Dreier authored
Change the permissions of the "mode" sysfs attribute to be S_IWUSR instead of S_IWUGO. Signed-off-by: -
Roland Dreier authored
The change to allow allocating ICM chunks from coherent memory did not increment the count of sg entries properly, so a chunk that required more than allocation would not be mapped properly by the HCA. Fix this by adding the missing increment of chunk->nsg. Signed-off-by: -
Dotan Barak authored
RESET->RESET is an allowed QP state transition, so mthca should handle it correctly, by just returning success without involving the firmware. Signed-off-by:
Dotan Barak <dotanb@mellanox.co.il> Signed-off-by:
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git://www.atmel.no/~hskinnemoen/linux/kernel/avr32Linus Torvalds authored
* 'for-linus' of git://www.atmel.no/~hskinnemoen/linux/kernel/avr32: [AVR32] Use per-controller spi_board_info structures [AVR32] Warn, don't BUG if clk_disable is called too many times [AVR32] Make sure all genclocks have a parent [AVR32] Remove unnecessary sys_nfsservctl conditional [AVR32] Wire up the SysV IPC calls properly [AVR32] Define ioremap_nocache, ioport_map and ioport_unmap [AVR32] Fix prototypes for __raw_writesb and friends
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Linus Torvalds authored
* master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgart: [AGPGART] allow drm populated agp memory types cleanups [AGPGART] intel-agp: Use ARRAY_SIZE macro when appropriate [AGPGART] Add agp-type-to-mask-type method missing from some drivers. [AGPGART] Don't try to remap i810 registers on resume. [AGPGART] Allow drm-populated agp memory types [AGPGART] compat ioctl
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Linus Torvalds authored
* master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq: [CPUFREQ] Longhaul - Redo Longhaul ver. 2 [CPUFREQ] EPS - Correct 2nd brand test [CPUFREQ] Longhaul - Separate frequency and voltage transition [CPUFREQ] Longhaul - Models of Nehemiah [CPUFREQ] Whitespace fixup [CPUFREQ] Longhaul - Simplier minmult [CPUFREQ] CPU_FREQ_TABLE shouldn't be a def_tristate [CPUFREQ] ondemand governor use new cpufreq rwsem locking in work callback [CPUFREQ] ondemand governor restructure the work callback [CPUFREQ] Rewrite lock in cpufreq to eliminate cpufreq/hotplug related issues [CPUFREQ] Remove hotplug cpu crap [CPUFREQ] Enhanced PowerSaver driver [CPUFREQ] Longhaul - Add VT8235 support [CPUFREQ] Longhaul - Fix guess_fsb function [CPUFREQ] Longhaul - Remove duplicate tables [CPUFREQ] Longhaul - Introduce Nehemiah C [CPUFREQ] fix cpuinfo_cur_freq for CPU_HW_PSTATE [CPUFREQ] Longhaul - Remove "ignore_latency" option
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Ben Dooks authored
The current driver is not setting the dev field in the private data structure, which can lead to an OOPS if the driver tries to report an error. Signed-off-by:
Ben Dooks <ben-linux@fluff.org> Cc: James Simmons <jsimmons@infradead.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Thomas Hisch authored
Add format specifier %d for uid in ecryptfs_printk Signed-off-by:
Thomas Hisch <t.hisch@gmail.com> Cc: Michael Halcrow <mhalcrow@us.ibm.com> Signed-off-by:
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Michael Halcrow authored
eCryptfs is gobbling a lot of stack in ecryptfs_generate_key_packet_set() because it allocates a temporary memory-hungry ecryptfs_key_record struct. This patch introduces a new kmem_cache for that struct and converts ecryptfs_generate_key_packet_set() to use it. Signed-off-by:
Michael Halcrow <mhalcrow@us.ibm.com> Signed-off-by:
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NeilBrown authored
When NFSD receives a write request, the data is typically in a number of 1448 byte segments and writev is used to collect them together. Unfortunately, generic_file_buffered_write passes these to the filesystem one at a time, so an e.g. 32K over-write becomes a series of partial-page writes to each page, causing the filesystem to have to pre-read those pages - wasted effort. generic_file_buffered_write handles one segment of the vector at a time as it has to pre-fault in each segment to avoid deadlocks. When writing from kernel-space (and nfsd does) this is not an issue, so generic_file_buffered_write does not need to break and iovec from nfsd into little pieces. This patch avoids the splitting when get_fs is KERNEL_DS as it is from NFSd. This issue was introduced by commit 6527c2bdAcked-by:
Nick Piggin <nickpiggin@yahoo.com.au> Cc: Norman Weathers <norman.r.weathers@conocophillips.com> Cc: Vladimir V. Saveliev <vs@namesys.com> Signed-off-by:
Neil Brown <neilb@suse.de> Signed-off-by:
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J. Bruce Fields authored
When setting an ACL that lacks inheritable ACEs on a directory, we should set a default ACL of zero length, not a default ACL with all bits denied. Signed-off-by:
"J. Bruce Fields" <bfields@citi.umich.edu> Signed-off-by:
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J. Bruce Fields authored
We're inserting deny's between some ACEs in order to enforce posix draft acl semantics which prevent permissions from accumulating across entries in an acl. That's fine, but we're doing that by inserting a deny after *every* allow, which is overkill. We shouldn't be adding them in places where they actually make no difference. Also replaced some helper functions for creating acl entries; I prefer just assigning directly to the struct fields--it takes a few more lines, but the field names provide some documentation that I think makes the result easier understand. Signed-off-by:
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J. Bruce Fields authored
Return just the effective permissions, and forget about the mask. It isn't worth the complexity. WARNING: This breaks backwards compatibility with overly-picky nfsv4->posix acl translation, as may has been included in some patched versions of libacl. To our knowledge no such version was every distributed by anyone outside citi. Signed-off-by:
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J. Bruce Fields authored
We should be returning ATTRNOTSUPP, not NOTSUPP, when acls are unsupported. Also fix a comment. Signed-off-by:
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J. Bruce Fields authored
The wrong pointer is being kfree'd in savemem() when defer_free returns with an error. Signed-off-by:
Benny Halevy <bhalevy@panasas.com> Signed-off-by:
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J. Bruce Fields authored
Simplify the memory management and code a bit by representing acls with an array instead of a linked list. Signed-off-by:
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J. Bruce Fields authored
The code that splits an incoming nfsv4 ACL into inheritable and effective parts can be combined with the the code that translates each to a posix acl, resulting in simpler code that requires one less pass through the ACL. Signed-off-by:
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J. Bruce Fields authored
The rfc allows us to be more permissive about the ACL inheritance bits we accept: "If the server supports a single "inherit ACE" flag that applies to both files and directories, the server may reject the request (i.e., requiring the client to set both the file and directory inheritance flags). The server may also accept the request and silently turn on the ACE4_DIRECTORY_INHERIT_ACE flag." Let's take the latter option--the ACL is a complex attribute that could be rejected for a wide variety of reasons, and the protocol gives us little ability to explain the reason for the rejection, so erroring out is a user-unfriendly last resort. Signed-off-by:
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J. Bruce Fields authored
The server name is expected to be a null-terminated string, so we can't pass in the raw client identifier. What's more, the client identifier is just a binary, not necessarily printable, blob. Let's just use the ip address instead. The server name appears to exist just to help debugging by making some printk's more informative. Note that the string is copies into the rpc client structure, so the pointer to the local variable does not outlive the function call. Signed-off-by:
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Jan Beulich authored
Use mask_ack_irq() where possible. Signed-off-by:
Jan Beulich <jbeulich@novell.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by:
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Randy Dunlap authored
Fix kernel-doc warnings in IRQ management. Signed-off-by:
Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by:
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Ingo Molnar authored
Now that disable_irq() defaults to delayed-disable semantics, the IRQ_DISABLED flag is not needed anymore. Signed-off-by:
Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Ingo Molnar authored
Never mask interrupts immediately upon request. Disabling interrupts in high-performance codepaths is rare, and on the other hand this change could recover lost edges (or even other types of lost interrupts) by conservatively only masking interrupts after they happen. (NOTE: with this change the highlevel irq-disable code still soft-disables this IRQ line - and if such an interrupt happens then the IRQ flow handler keeps the IRQ masked.) Mark i8529A controllers as 'never loses an edge'. Signed-off-by:
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Paul E. McKenney authored
Use RCU to avoid the need to acquire tasklist_lock in the single-threaded case of clock_gettime(). It still acquires tasklist_lock when for a (potentially multithreaded) process. This change allows realtime applications to frequently monitor CPU consumption of individual tasks, as requested (and now deployed) by some off-list users. This has been in Ingo Molnar's -rt patchset since late 2005 with no problems reported, and tests successfully on 2.6.20-rc6, so I believe that it is long-since ready for mainline adoption. [paulmck@linux.vnet.ibm.com: fix exit()/posix_cpu_clock_get() race spotted by Oleg] Signed-off-by:
Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by:
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john stultz authored
Cleanup and re-enable vsyscall gettimeofday using the generic clocksource infrastructure. [akpm@osdl.org: cleanup] Signed-off-by:
John Stultz <johnstul@us.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@muc.de> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by:
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john stultz authored
This patch converts x86_64 to use the GENERIC_TIME infrastructure and adds clocksource structures for both TSC and HPET (ACPI PM is shared w/ i386). [akpm@osdl.org: fix printk timestamps] [akpm@osdl.org: fix printk ckeanups] [akpm@osdl.org: hpet build fix] Signed-off-by:
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john stultz authored
In preparation for the x86_64 generic time conversion, this patch splits out TSC and HPET related code from arch/x86_64/kernel/time.c into respective hpet.c and tsc.c files. [akpm@osdl.org: fix printk timestamps] [akpm@osdl.org: cleanup] Signed-off-by:
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john stultz authored
In preparation for supporting generic timekeeping, this patch cleans up x86-64's use of vxtime.hpet_address, changing it to just hpet_address as is also used in i386. This is necessary since the vxtime structure will be going away. Signed-off-by:
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john stultz authored
Provides generic infrastructure for vsyscall-gtod. [akpm@osdl.org: cleanup] Signed-off-by:
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Ingo Molnar authored
Add SysRq-Q to print pending timers and other timer info. Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by:
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