- 29 12月, 2008 8 次提交
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由 Tejun Heo 提交于
In all barrier sequences, the barrier write itself was always assumed to be issued and thus didn't have corresponding control flag. This patch adds QUEUE_ORDERED_DO_BAR and unify action mask handling in start_ordered() such that any barrier action can be skipped. This patch doesn't introduce any visible behavior changes. Signed-off-by: NTejun Heo <tj@kernel.org> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Tejun Heo 提交于
Separate out ordering type (drain,) and action masks (preflush, postflush, fua) from visible ordering mode selectors (QUEUE_ORDERED_*). Ordering types are now named QUEUE_ORDERED_BY_* while action masks are named QUEUE_ORDERED_DO_*. This change is necessary to add QUEUE_ORDERED_DO_BAR and make it optional to improve empty barrier implementation. Signed-off-by: NTejun Heo <tj@kernel.org> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Richard Kennedy 提交于
Remove 8 bytes of padding from struct bio which also removes 16 bytes from struct bio_pair to make it 248 bytes. bio_pair then fits into one fewer cache lines & into a smaller slab. Signed-off-by: NRichard Kennedy <richard@rsk.demon.co.uk> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Cheng Renquan 提交于
After many improvements on kblockd_flush_work, it is now identical to cancel_work_sync, so a direct call to cancel_work_sync is suggested. The only difference is that cancel_work_sync is a GPL symbol, so no non-GPL modules anymore. Signed-off-by: NCheng Renquan <crquan@gmail.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Keith Mannthey 提交于
Allow the scsi request REQ_QUIET flag to be propagated to the buffer file system layer. The basic ideas is to pass the flag from the scsi request to the bio (block IO) and then to the buffer layer. The buffer layer can then suppress needless printks. This patch declutters the kernel log by removed the 40-50 (per lun) buffer io error messages seen during a boot in my multipath setup . It is a good chance any real errors will be missed in the "noise" it the logs without this patch. During boot I see blocks of messages like " __ratelimit: 211 callbacks suppressed Buffer I/O error on device sdm, logical block 5242879 Buffer I/O error on device sdm, logical block 5242879 Buffer I/O error on device sdm, logical block 5242847 Buffer I/O error on device sdm, logical block 1 Buffer I/O error on device sdm, logical block 5242878 Buffer I/O error on device sdm, logical block 5242879 Buffer I/O error on device sdm, logical block 5242879 Buffer I/O error on device sdm, logical block 5242879 Buffer I/O error on device sdm, logical block 5242879 Buffer I/O error on device sdm, logical block 5242872 " in my logs. My disk environment is multipath fiber channel using the SCSI_DH_RDAC code and multipathd. This topology includes an "active" and "ghost" path for each lun. IO's to the "ghost" path will never complete and the SCSI layer, via the scsi device handler rdac code, quick returns the IOs to theses paths and sets the REQ_QUIET scsi flag to suppress the scsi layer messages. I am wanting to extend the QUIET behavior to include the buffer file system layer to deal with these errors as well. I have been running this patch for a while now on several boxes without issue. A few runs of bonnie++ show no noticeable difference in performance in my setup. Thanks for John Stultz for the quiet_error finalization. Submitted-by: NKeith Mannthey <kmannth@us.ibm.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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As is the case with SSD devices, we do not want to idle in AS/CFQ when the block device is a paravirt front-end driver. This patch adds a flag (QUEUE_FLAG_VIRT) which should be used by front-end drivers such as virtio_blk and xen-blkfront to indicate a paravirtualized device. Signed-off-by: NFernando Luis Vazquez Cao <fernando@oss.ntt.co.jp> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Harvey Harrison 提交于
Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com> Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
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由 Finn Thain 提交于
Remove some more cruft from machw.h and drop the #include where it isn't needed. Signed-off-by: NFinn Thain <fthain@telegraphics.com.au> Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
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- 26 12月, 2008 2 次提交
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由 Vegard Nossum 提交于
See commit 1045b03e ("netlink: fix overrun in attribute iteration") for a detailed explanation of why this patch is necessary. In short, nlmsg_next() can make "remaining" go negative, and the remaining >= sizeof(...) comparison will promote "remaining" to an unsigned type, which means that the expression will evaluate to true for negative numbers, even though it was not intended. I put "theoretical" in the title because I have no evidence that this can actually happen, but I suspect that a crafted netlink packet can trigger some badness. Note that the last test, which seemingly has the exact same problem (also true for nla_ok()), is perfectly OK, since we already know that remaining is positive. Signed-off-by: NVegard Nossum <vegard.nossum@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Wei Yongjun 提交于
Implement socket option SCTP_GET_ASSOC_NUMBER of the latest ietf socket extensions API draft. 8.2.5. Get the Current Number of Associations (SCTP_GET_ASSOC_NUMBER) This option gets the current number of associations that are attached to a one-to-many style socket. The option value is an uint32_t. Signed-off-by: NWei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 25 12月, 2008 12 次提交
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由 Martin Schwidefsky 提交于
For CONFIG_SPARSEMEM_VMEMMAP=y on s390 I get warnings like init/main.c: In function 'start_kernel': init/main.c:641: warning: format '%08lx' expects type 'long unsigned int', but argument 2 has type 'int' The warning can be suppressed with a cast to unsigned long in the CONFIG_SPARSEMEM_VMEMMAP=y version of __page_to_pfn. Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Hendrik Brueckner 提交于
Provide a locking free version of iucv_message_receive and iucv_message_send that do not call local_bh_enable in a spin_lock_(bh|irqsave)() context. Signed-off-by: NHendrik Brueckner <brueckner@linux.vnet.ibm.com>
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由 Peter Zijlstra 提交于
Impact: extend the wakeup tracepoint with the info whether the wakeup was real Add the information needed to distinguish 'real' wakeups from 'false' wakeups. Signed-off-by: NPeter Zijlstra <peterz@infradead.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Herbert Xu 提交于
The tables used by the various AES algorithms are currently computed at run-time. This has created an init ordering problem because some AES algorithms may be registered before the tables have been initialised. This patch gets around this whole thing by precomputing the tables. Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
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由 Herbert Xu 提交于
The bnx2x driver actually uses the crc32c_le name so this patch restores the crc32c_le symbol through a macro. Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
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由 Herbert Xu 提交于
This patch swaps the role of libcrc32c and crc32c. Previously the implementation was in libcrc32c and crc32c was a wrapper. Now the code is in crc32c and libcrc32c just calls the crypto layer. The reason for the change is to tap into the algorithm selection capability of the crypto API so that optimised implementations such as the one utilising Intel's CRC32C instruction can be used where available. Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
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由 Herbert Xu 提交于
This patch allows shash algorithms to be used through the old hash interface. This is a transitional measure so we can convert the underlying algorithms to shash before converting the users across. Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
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由 Herbert Xu 提交于
It is often useful to save the partial state of a hash function so that it can be used as a base for two or more computations. The most prominent example is HMAC where all hashes start from a base determined by the key. Having an import/export interface means that we only have to compute that base once rather than for each message. Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
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由 Herbert Xu 提交于
This patch allows shash algorithms to be used through the ahash interface. This is required before we can convert digest algorithms over to shash. Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
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由 Herbert Xu 提交于
The shash interface replaces the current synchronous hash interface. It improves over hash in two ways. Firstly shash is reentrant, meaning that the same tfm may be used by two threads simultaneously as all hashing state is stored in a local descriptor. The other enhancement is that shash no longer takes scatter list entries. This is because shash is specifically designed for synchronous algorithms and as such scatter lists are unnecessary. All existing hash users will be converted to shash once the algorithms have been completely converted. There is also a new finup function that combines update with final. This will be extended to ahash once the algorithm conversion is done. This is also the first time that an algorithm type has their own registration function. Existing algorithm types will be converted to this way in due course. Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
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由 Herbert Xu 提交于
This patch reintroduces a completely revamped crypto_alloc_tfm. The biggest change is that we now take two crypto_type objects when allocating a tfm, a frontend and a backend. In fact this simply formalises what we've been doing behind the API's back. For example, as it stands crypto_alloc_ahash may use an actual ahash algorithm or a crypto_hash algorithm. Putting this in the API allows us to do this much more cleanly. The existing types will be converted across gradually. Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
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由 Herbert Xu 提交于
The type exit function needs to undo any allocations done by the type init function. However, the type init function may differ depending on the upper-level type of the transform (e.g., a crypto_blkcipher instantiated as a crypto_ablkcipher). So we need to move the exit function out of the lower-level structure and into crypto_tfm itself. As it stands this is a no-op since nobody uses exit functions at all. However, all cases where a lower-level type is instantiated as a different upper-level type (such as blkcipher as ablkcipher) will be converted such that they allocate the underlying transform and use that instead of casting (e.g., crypto_ablkcipher casted into crypto_blkcipher). That will need to use a different exit function depending on the upper-level type. This patch also allows the type init/exit functions to call (or not) cra_init/cra_exit instead of always calling them from the top level. Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
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- 23 12月, 2008 1 次提交
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由 Neil Horman 提交于
When the napi api was changed to separate its 1:1 binding to the net_device struct, the netif_rx_[prep|schedule|complete] api failed to remove the now vestigual net_device structure parameter. This patch cleans up that api by properly removing it.. Signed-off-by: NNeil Horman <nhorman@tuxdriver.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 22 12月, 2008 5 次提交
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由 Yevgeny Petrilin 提交于
When using MSI-X mode, create a completion event queue for each CPU. Report the number of completion EQs in a new struct mlx4_caps member, num_comp_vectors, and extend the mlx4_cq_alloc() interface with a vector parameter so that consumers can specify which completion EQ should be used to report events for the CQ being created. Signed-off-by: NYevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
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由 Magnus Damm 提交于
This patch adds sh_mobile_lcdcfb deferred io support for SYS panels. The LCDC hardware block managed by the sh_mobile_lcdcfb driver supports RGB or SYS panel configurations. SYS panels come with an external display controller that is resposible for refreshing the actual LCD panel. RGB panels are controlled directly by the LCDC and they need to be refreshed by the LCDC hardware. In the case of SYS panels we can save some power by configuring the LCDC hardware block in one-shot mode. In this one-shot mode panel refresh is managed by software. This works well together with deferred io since it allows us to stop clocks for most of the time and only enable clocks when we actually want to trigger an update. When there is no fbdev activity the clocks are kept stopped which allows us to deep sleep. The refresh rate in deferred io mode is set using platform data. The same platform data can also be used to disable deferred io mode. As with other deferred io frame buffers user space code should use fsync() on the frame buffer device to trigger an update. Signed-off-by: NMagnus Damm <damm@igel.co.jp> Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Paul Mundt 提交于
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
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由 Don Skidmore 提交于
Adds the Backward Congestion Notification Address (BCNA) attribute to the Backward Congestion Notification (BCN) interface for Data Center Bridging (DCB), which was missing. Receive the BCNA attribute in the ixgbe driver. The BCNA attribute is for a switch to inform the endstation about the physical port identification in order to support BCN on aggregated links. Signed-off-by: NDon Skidmore <donald.c.skidmore@intel.com> Signed-off-by: NEric W Multanen <eric.w.multanen@intel.com> Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
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由 Don Skidmore 提交于
Data Center Bridging (DCB) had no way to know if setstate had failed in the driver. This patch enables dcb netlink code to handle the status for the DCB setstate interface. Likewise it allows the driver to return a failed status if MSI-X isn't enabled. Signed-off-by: NDon Skidmore <donald.c.skidmore@intel.com> Signed-off-by: NEric W Multanen <eric.w.multanen@intel.com> Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 21 12月, 2008 2 次提交
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由 Lai Jiangshan 提交于
Impact: broaden gcc printf format checks for ftrace_printk() format arguments checking for ftrace_printk() is __printf(1, 2), not __printf(1, 0). Signed-off-by: NLai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Anton Vorontsov 提交于
This function is used to count how many GPIOs are specified for a device node. Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 20 12月, 2008 10 次提交
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由 Markus Metzger 提交于
Impact: move the BTS buffer accounting to the mlock bucket Add alloc_locked_buffer() and free_locked_buffer() functions to mm/mlock.c to kalloc a buffer and account the locked memory to current. Account the memory for the BTS buffer to the tracer. Signed-off-by: NMarkus Metzger <markus.t.metzger@intel.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Markus Metzger 提交于
Impact: introduce new ptrace facility Add arch_ptrace_untrace() function that is called when the tracer detaches (either voluntarily or when the tracing task dies); ptrace_disable() is only called on a voluntary detach. Add ptrace_fork() and arch_ptrace_fork(). They are called when a traced task is forked. Clear DS and BTS related fields on fork. Release DS resources and reclaim memory in ptrace_untrace(). This releases resources already when the tracing task dies. We used to do that when the traced task dies. Signed-off-by: NMarkus Metzger <markus.t.metzger@intel.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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Impact: Cleanup and branch hints only. Move the track and untrack pfn stub routines from memory.c to asm-generic. Also add unlikely to pfnmap related calls in fork and exit path. Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: NSuresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: NH. Peter Anvin <hpa@zytor.com>
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Impact: Cleanup - removes a new function in favor of a recently modified older one. Replace follow_pfnmap_pte in pat code with follow_phys. follow_phys lso returns protection eliminating the need of pte_pgprot call. Using follow_phys also eliminates the need for pte_pa. Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: NSuresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: NH. Peter Anvin <hpa@zytor.com>
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Impact: Changes and globalizes an existing static interface. Follow_phys does similar things as follow_pfnmap_pte. Make a minor change to follow_phys so that it can be used in place of follow_pfnmap_pte. Physical address return value with 0 as error return does not work in follow_phys as the actual physical address 0 mapping may exist in pte. Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: NSuresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: NH. Peter Anvin <hpa@zytor.com>
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Impact: Documentation only Incremental patches to address the review comments from Nick Piggin for v3 version of x86 PAT pfnmap changes patchset here http://lkml.indiana.edu/hypermail/linux/kernel/0812.2/01330.html This patch: Clarify is_linear_pfn_mapping() and its usage. It is used by x86 PAT code for performance reasons. Identifying pfnmap as linear over entire vma helps speedup reserve and free of memtype for the region. Signed-off-by: NVenkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: NSuresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: NH. Peter Anvin <hpa@zytor.com>
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由 James Morris 提交于
Pass mount flags to security_sb_kern_mount(), so security modules can determine if a mount operation is being performed by the kernel. Signed-off-by: NJames Morris <jmorris@namei.org> Acked-by: NStephen Smalley <sds@tycho.nsa.gov>
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由 Kalle Valo 提交于
This patch implements dynamic power save for mac80211. Basically it means enabling power save mode after an idle period. Implementing it dynamically gives a good compromise of low power consumption and low latency. Some hardware have support for this in firmware, but some require the host to do it. The dynamic power save is implemented by adding an timeout to ieee80211_subif_start_xmit(). The timeout can be enabled from userspace with Wireless Extensions. For example, the command below enables the dynamic power save and sets the time timeout to 500 ms: iwconfig wlan0 power timeout 500m Power save now only works with devices which handle power save in firmware. It's also disabled by default and the heuristics when and how to enable is considered as a policy decision and will be left for the userspace to handle. In case the firmware has support for this, drivers can disable this feature with IEEE80211_HW_NO_STACK_DYNAMIC_PS. Big thanks to Johannes Berg for the help with the design and code. Signed-off-by: NKalle Valo <kalle.valo@nokia.com> Acked-by: NJohannes Berg <johannes@sipsolutions.net> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Jouni Malinen 提交于
This patch adds option for HT-enabled drivers to report HT rates (HT20/HT40, short GI, MCS index) to mac80211. These rates are currently not in the rate table, so the rate_idx is used to indicate MCS index. Signed-off-by: NJouni Malinen <jouni.malinen@atheros.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Sujith 提交于
HT management is done differently for AP and STA modes, unify to just the ->config() callback since HT is fundamentally a PHY property and cannot be per-BSS. Rename enum nl80211_sec_chan_offset as nl80211_channel_type to denote the channel type ( NO_HT, HT20, HT40+, HT40- ). Signed-off-by: NJohannes Berg <johannes@sipsolutions.net> Signed-off-by: NSujith <Sujith.Manoharan@atheros.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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