- 27 Jun, 2005 40 commits
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Roland Dreier authored
Split allocation of MTT range from creation of MR. This will be useful for implementing shared memory regions and userspace verbs. Signed-off-by:
Roland Dreier <roland@topspin.com> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Roland Dreier authored
Make mthca_table_put() and mthca_table_put_range() NOPs if the device is not mem-free, so that we don't have to have "if (mthca_is_memfree())" tests in the callers of these functions. This makes our code more readable and maintainable, and saves a couple dozen bytes of text in ib_mthca.ko as well. Signed-off-by:
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Roland Dreier authored
Fix memset to use sizeof *props instead of just sizeof props. Signed-off-by:
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Roland Dreier authored
Add support for unreliable connected (UC) transport to mthca driver: - Add attributes for UC to modify QP table. - Add support for posting UC work requests. Signed-off-by:
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Roland Dreier authored
mthca apparently had the meanings of the max_rd_atomic and max_dest_rd_atomic QP attributes backwards. max_rd_atomic limits the maximum number of outstanding RDMA/atomic requests as an initiator (on a send queue), and max_dest_rd_atomic specifies the resources allocated to handle RMDA/atomic requests from the remote end of the connection. We were programming our QP context with these values swapped. Signed-off-by:
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Roland Dreier authored
Fix offset of static_rate in QP context. Pointed out by Dror Goldenberg. Signed-off-by:
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Roland Dreier authored
Switch all allocations of coherent memory from pci_alloc_consistent() to dma_alloc_coherent(), so that we can pass GFP_KERNEL. This should help when the system is low on memory. Signed-off-by:
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Roland Dreier authored
Clean up CQ debugging code: make dump_cqe print on one line, and only dump error CQ entries for local operation errors. Signed-off-by:
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Bernhard Fischer authored
- Fix incorrect cut-n-paste in error messages. - Add missing newlines in error messages. - Use DRV_NAME instead of "ib_mthca" in a couple of places. Signed-off-by:
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Tom Duffy authored
Add Sun copyright to files modified by Tom Duffy. Signed-off-by:
Tom Duffy <tduffy@sun.com> Signed-off-by:
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Andrea Arcangeli authored
I believe at least for seccomp it's worth to turn off the tsc, not just for HT but for the L2 cache too. So it's up to you, either you turn it off completely (which isn't very nice IMHO) or I recommend to apply this below patch. This has been tested successfully on x86-64 against current cogito repository (i686 compiles so I didn't bother testing ;). People selling the cpu through cpushare may appreciate this bit for a peace of mind. There's no way to get any timing info anymore with this applied (gettimeofday is forbidden of course). The seccomp environment is completely deterministic so it can't be allowed to get timing info, it has to be deterministic so in the future I can enable a computing mode that does a parallel computing for each task with server side transparent checkpointing and verification that the output is the same from all the 2/3 seller computers for each task, without the buyer even noticing (for now the verification is left to the buyer client side and there's no checkpointing, since that would require more kernel changes to track the dirty bits but it'll be easy to extend once the basic mode is finished). Eliminating a cold-cache read of the cr4 global variable will save one cacheline during the tlb flush while making the code per-cpu-safe at the same time. Thanks to Mikael Pettersson for noticing the tlb flush wasn't per-cpu-safe. The global tlb flush can run from irq (IPI calling do_flush_tlb_all) but it'll be transparent to the switch_to code since the IPI won't make any change to the cr4 contents from the point of view of the interrupted code and since it's now all per-cpu stuff, it will not race. So no need to disable irqs in switch_to slow path. Signed-off-by:
Andrea Arcangeli <andrea@cpushare.com> Signed-off-by:
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Benjamin Herrenschmidt authored
This patch adds a couple of missing symbol exports. flush_dcache_page is used by the AGP driver and rtc_lock by the RTC driver. Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by:
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Benjamin Herrenschmidt authored
This patch removes CONFIG_PMAC_PBOOK (PowerBook support). This is now split into CONFIG_PMAC_MEDIABAY for the actual hotswap bay that some powerbooks have, CONFIG_PM for power management related code, and just left out of any CONFIG_* option for some generally useful stuff that can be used on non-laptops as well. Signed-off-by:
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Benjamin Herrenschmidt authored
The macserial driver has been obsoleted by the new pmac_zilog driver for a while now and probably doesn't even work anymore on recent kernels. This patch removes it. Signed-off-by:
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Benjamin Herrenschmidt authored
The Power Management Unit on PowerMacs is very sensitive to timeouts during async message exchanges. It uses rather crude protocol based on a shift register with an interrupt and is almost continuously exchanging messages with the host CPU on laptops. This patch adds a routine to the open_pic driver to be able to select a PMU driver so that it bumps it's interrupt priority to above the normal level. This will allow PMU interrupts to occur while another interrupt is pending, and thus reduce the risk of machine beeing abruptly shutdown by the PMU due to a timeout in PMU communication caused by excessive interrupt latency. The problem is very rare, and usually just doesn't happen, but it is still useful to make things even more robust. Signed-off-by:
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Marcelo Tosatti authored
The proposed _tlbie call at update_mmu_cache() is safe because: Addresses for which update_mmu_cache() gets invocated are never inside the static kernel virtual mapping, meaning that there is no risk for the _tlbie() here to be thrashing the pinned entry, as Dan suspected. The intermediate TLB state in which this bug can be triggered is not visible by userspace or any other contexts, except the page fault handling path. So there is no need to worry about userspace dcbxxx users. The other solution to this is to avoid dcbst misbehaviour in the first place, which involves changing in-kernel "dcbst" callers to use 8xx specific SPR's. Summary: On 8xx, cache control instructions (particularly "dcbst" from flush_dcache_icache) fault as write operation if there is an unpopulated TLB entry for the address in question. To workaround that, we invalidate the TLB here, thus avoiding dcbst misbehaviour. Signed-off-by:
Marcelo Tosatti <marcelo.tosatti@cyclades.com> Signed-off-by:
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Yoichi Yuasa authored
arch/mips/kernel/signal.c: In function 'do_signal': arch/mips/kernel/signal.c:460: error: too many arguments to function 'try_to_freeze' Signed-off-by:
Yoichi Yuasa <yuasa@hh.iij4u.or.jp> Signed-off-by:
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Bob Picco authored
I spotted this issue while in memmap_init last week. I can't say the change has any test coverage by me. start_pfn was formerly used in main "for" loop. The fix is replace start_pfn with pfn. Signed-off-by:
Bob Picco <bob.picco@hp.com> Signed-off-by:
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Kumar Gala authored
Lost a curly brace in translation. Everything is better now. Signed-off-by:
Matt McClintock <msm@freescale.com> Signed-off-by:
Kumar Gala <kumar.gala@freescale.com> Signed-off-by:
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Linus Torvalds authored
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Linus Torvalds authored
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rsync://rsync.kernel.org/pub/scm/linux/kernel/git/dtor/input.gitLinus Torvalds authored
Some manual fixups required due to clashes with the PF_FREEZE cleanups.
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Dave Jones authored
CONFIG_CONFIG_TUNER_MULTI_I2C probably isn't what the author meant to create. Signed-off-by:
Dave Jones <davej@redhat.com> Signed-off-by:
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Jens Axboe authored
If cfq is managing a queue and a new scheduler is later selected, it is possible for the cfqd unplug_work work to be queued after the kblockd work struct has been flushed. The problem is the ordering of cfq_shutdown_timer_wq() and blk_put_queue() in cfq_put_cfqd(). The latter may rearm the work, leaving cfq_kick_queue() with dead data. Signed-off-by:
Jens Axboe <axboe@suse.de> Signed-off-by:
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Jens Axboe authored
Add ioprio documentation Signed-off-by:
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Jens Axboe authored
- Adjust slice values - Instead of one async queue, one is defined per priority level. This prevents kernel threads (such as reiserfs/x and others) that run at higher io priority from conflicting with others. Previously, it was a coin toss what io prio the async queue got, it was defined by who first set up the queue. - Let a time slice only begin, when the previous slice is completely done. Previously we could be somewhat unfair to a new sync slice, if the previous slice was async and had several ios queued. This might need a little tweaking if throughput suffers a little due to this, allowing perhaps an overlap of a single request or so. - Optimize the calling of kblockd_schedule_work() by doing it only when it is strictly necessary (no requests in driver and work left to do). - Correct sync vs async logic. A 'normal' process can be purely async as well, and a flusher can be purely sync as well. Sync or async is now a property of the class defined and requests pending. Previously writers could be considered sync, when they were really async. - Get rid of the bit fields in cfqq and crq, use flags instead. - Various other cleanups and fixes Signed-off-by:
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Jens Axboe authored
In cfq_find_next_crq(), cfq tries to find the next request by choosing one of two requests before and after the current one. Currently, when choosing the next request, if there's no next request, the next candidate is NULL, resulting in selection of the previous request. This results in weird scheduling. Once we reach the end, we always seek backward. The correct behavior is using the first request as the next candidate. cfq_choose_req() already has logics for handling wrapped requests. Signed-off-by:
Tejun Heo <htejun@gmail.com> Signed-off-by:
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Jens Axboe authored
This updates the CFQ io scheduler to the new time sliced design (cfq v3). It provides full process fairness, while giving excellent aggregate system throughput even for many competing processes. It supports io priorities, either inherited from the cpu nice value or set directly with the ioprio_get/set syscalls. The latter closely mimic set/getpriority. This import is based on my latest from -mm. Signed-off-by:
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Deepak Saxena authored
Patch from Deepak Saxena Accidently swapped the order of movne and orrne. Bad. Signed-off-by:
Deepak Saxena <dsaxena@plexity.net> Signed-off-by:
Russell King <rmk+kernel@arm.linux.org.uk>
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Michael Burian authored
Patch from Michael Burian This does not look like an include file for "i386", so use "ARM" instead. Signed-off-by:
Michael Burian <dynmail1@gassner-waagen.at> Signed-off-by:
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Russell King authored
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Russell King authored
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Russell King authored
It doesn't make sense for this to be in mm-armv.c now that 26-bit ARM support is no longer integrated into arch/arm. Signed-off-by: -
Russell King authored
It doesn't make sense to have the PGD kernel pointers initialisation separate from the PGD user pointers, especially when we clean the data cache over the whole range. Signed-off-by: -
Russell King authored
This call allows the dynamic tick support to reprogram the timer immediately before the CPU idles. Signed-off-by: -
Russell King authored
My scripts missed committing this file. Signed-off-by: -
Russell King authored
Add separate files for the different 8250 ISA-based serial boards. Looking across all the various architectures, it seems reasonable that we can key the availability of the configuration options for these beasts to the bus-related symbols (iow, CONFIG_ISA). We also standardise the base baud/uart clock rate for these boards - I'm sure that isn't architecture specific, but is solely dependent on the crystal fitted on the board (which should be the same no matter what type of machine its fitted into.) Signed-off-by:
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