- 20 7月, 2012 2 次提交
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由 Mike Marciniszyn 提交于
Add a congestion control agent in the driver that handles gets and sets from the congestion control manager in the fabric for the Performance Scale Messaging (PSM) library. Signed-off-by: NMike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: NRoland Dreier <roland@purestorage.com>
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由 Mike Marciniszyn 提交于
Profiling has shown that sdma_lock is proving a bottleneck for performance. The situations include: - RDMA reads when krcvqs > 1 - post sends from multiple threads For RDMA read the current global qib_wq mechanism runs on all CPUs and contends for the sdma_lock when multiple RMDA read requests are fielded on differenct CPUs. For post sends, the direct call to qib_do_send() from multiple threads causes the contention. Since the sdma mechanism is per port, this fix converts the existing workqueue to a per port single thread workqueue to reduce the lock contention in the RDMA read case, and for any other case where the QP is scheduled via the workqueue mechanism from more than 1 CPU. For the post send case, This patch modifies the post send code to test for a non empty sdma engine. If the sdma is not idle the (now single thread) workqueue will be used to trigger the send engine instead of the direct call to qib_do_send(). Signed-off-by: NMike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: NRoland Dreier <roland@purestorage.com>
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- 15 5月, 2012 1 次提交
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由 Mitko Haralanov 提交于
A "fix" for a bug with the number of contexts on a single-port board caused the calculation to be off by one, which causes problems with the upper layers. The same problem exists for number of free contexts, which is also fixed here. Signed-off-by: NMitko Haralanov <mitko.haralanov@intel.com> Signed-off-by: NMike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: NRoland Dreier <roland@purestorage.com>
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- 04 1月, 2012 1 次提交
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由 Mike Marciniszyn 提交于
More style issues revealed with checkpatch.pl -f. Signed-off-by: NMike Marciniszyn <mike.marciniszyn@qlogic.com> Signed-off-by: NRoland Dreier <roland@purestorage.com>
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- 01 11月, 2011 1 次提交
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由 Paul Gortmaker 提交于
They had been getting it implicitly via device.h but we can't rely on that for the future, due to a pending cleanup so fix it now. Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
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- 22 10月, 2011 2 次提交
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由 Mitko Haralanov 提交于
Hold the link state machine until the tuning data is read from the QSFP EEPROM so correct tuning settings are applied before the state machine attempts to bring the link up. Link is also held on cable unplug in case a different cable is used. Signed-off-by: NMitko Haralanov <mitko@qlogic.com> Signed-off-by: NMike Marciniszyn <mike.marciniszyn@qlogic.com> Signed-off-by: NRoland Dreier <roland@purestorage.com>
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由 Mike Marciniszyn 提交于
The context init now saves a shift from rcvegrbufs_perchunk rcvegrbufs_perchunk_shift using ilog2. A BUG_ON() protects the power of 2 assumption. Signed-off-by: NMike Marciniszyn <mike.marciniszyn@qlogic.com> Signed-off-by: NRoland Dreier <roland@purestorage.com>
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- 07 10月, 2011 1 次提交
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由 Mike Marciniszyn 提交于
The code that was recently introduced to report the number of free contexts is flawed for multiple HCAs: /* Return the number of free user ports (contexts) available. */ return scnprintf(buf, PAGE_SIZE, "%u\n", dd->cfgctxts - dd->first_user_ctxt - (u32)qib_stats.sps_ctxts); The qib_stats is global to the module, not per HCA, so the code is broken for multiple HCAs. This patch adds a qib_devdata field, freectxts, that reflects the free contexts for this HCA. Signed-off-by: NMike Marciniszyn <mike.marciniszyn@qlogic.com> Reviewed-by: NRam Vepa <ram.vepa@qlogic.com> Signed-off-by: NRoland Dreier <roland@purestorage.com>
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- 31 3月, 2011 1 次提交
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由 Lucas De Marchi 提交于
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: NLucas De Marchi <lucas.demarchi@profusion.mobi>
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- 17 1月, 2011 1 次提交
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由 Tejun Heo 提交于
* ib_wq is added, which is used as the common workqueue for infiniband instead of the system workqueue. All system workqueue usages including flush_scheduled_work() callers are converted to use and flush ib_wq. * cancel_delayed_work() + flush_scheduled_work() converted to cancel_delayed_work_sync(). * qib_wq is removed and ib_wq is used instead. This is to prepare for deprecation of flush_scheduled_work(). Signed-off-by: NTejun Heo <tj@kernel.org> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
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- 13 1月, 2011 1 次提交
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由 Joe Perches 提交于
Signed-off-by: NJoe Perches <joe@perches.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
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- 11 1月, 2011 1 次提交
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由 Mike Marciniszyn 提交于
Add check when setting configured contexts that the value does not exceed the number of contexts allocated for the card. If the value exceeds the already allocated count, set it to what is already allocated. Signed-off-by: NMike Marciniszyn <mike.marciniszyn@qlogic.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
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- 27 10月, 2010 1 次提交
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由 Ralph Campbell 提交于
If CONFIG_PCI_MSI is not set, and a QLE7140 is present, the pointer "dd" is uninitialized. Signed-off-by: NRalph Campbell <ralph.campbell@qlogic.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
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- 04 8月, 2010 1 次提交
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由 Ralph Campbell 提交于
Up to now, we have set the number of available user contexts based on the number of hardware contexts which is set according to the number of available CPUs. This was fine since most CPUs had a power of two number of cores and the chip supported 4, 8, or 16 user contexts. Now that some systems have 12 cores, the default isn't optimal and should be set to 12 even though 16 hardware contexts need to be enabled. Signed-off-by: NRalph Campbell <ralph.campbell@qlogic.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
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- 07 7月, 2010 4 次提交
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由 Ralph Campbell 提交于
If qib_init() fails, the driver fails to free memory, unregister device files, and unregister with the PCIe framework. The driver will unload without error but a subsequent driver load will cause the system to panic. This was found by changing the 7220 code to load the serdes microcode separately and not installing the microcode file. Signed-off-by: NRalph Campbell <ralph.campbell@qlogic.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
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由 Ralph Campbell 提交于
Workqueues aren't exactly equivalent to tasklets since the callback function may be called from multiple CPUs before the callback returns. This causes completion notification callbacks to have MT bugs since they weren't expecting this behavior. The fix is to use a single threaded work queue. Signed-off-by: NRalph Campbell <ralph.campbell@qlogic.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
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由 Ralph Campbell 提交于
The eager buffers are not being cleared before being mmapped into a new user address space. This is a potential security risk and should be fixed. Note that the eager header queue is already being cleared. Signed-off-by: NRalph Campbell <ralph.campbell@qlogic.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
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由 Dave Olson 提交于
Don't set write combining via PAT on the VL15 buffers to avoid a rare problem with unaligned writes from interrupt-flushed store buffers. Signed-off-by: NDave Olson <dave.olson@qlogic.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
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- 26 5月, 2010 1 次提交
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由 Ralph Campbell 提交于
This patch fixes a compile error saying qib_init_iba6120_funcs() is undefined when CONFIG_PCI_MSI is not defined. Thanks to Randy Dunlap <randy.dunlap@oracle.com> for finding this and suggesting the fix. Signed-off-by: NRalph Campbell <ralph.campbell@qlogic.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
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- 24 5月, 2010 1 次提交
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由 Ralph Campbell 提交于
Add a low-level IB driver for QLogic PCIe adapters. Signed-off-by: NRalph Campbell <ralph.campbell@qlogic.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
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