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2006-03-21Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [MIPS] Update defconfigs. [MIPS] Separate CPU entries in /proc/cpuinfo with a blank line. [MIPS] sys_mmap2 offset argument should always be shifted 12, not PAGE_SHIFT. [MIPS] TX49XX has prefetch. [MIPS] Kill tlb-andes.c. [MIPS] War on whitespace: cleanup initial spaces followed by tabs. [MIPS] Makefile crapectomy. [MIPS] Reformat __xchg(). [MIPS] Mention Broadcom part number for BigSur board [MIPS] Remove CONFIG_BUILD_ELF64. [MIPS] Further sparsification for 32-bit compat code. [MIPS] fix wrong __user usage in _sysn32_rt_sigsuspend [MIPS] Signal cleanup [MIPS] Reformat all of signal32.c with tabs instead of space for consistency [MIPS] Delete unused sys32_waitpid. [MIPS] Make I/O helpers more customizable [MIPS] Symmetric Uniprocessor support for Qemu. [MIPS] sc-rm7k.c cleanup [MIPS] MIPS64 R2 optimizations for 64-bit endianess swapping. [MIPS] Add early console for Cobalt.
2006-03-21Merge branch 'for-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband: (47 commits) IB/mthca: Query SRQ srq_limit fixes IPoIB: Get rid of useless test of queue length IB/mthca: Correct reported SRQ size in MemFree case. IB/mad: Fix oopsable race on device removal IB/srp: Coverity fix to srp_parse_options() IB/mthca: Coverity fix to mthca_init_eq_table() IB: Coverity fixes to sysfs.c IPoIB: Move ipoib_ib_dev_flush() to ipoib workqueue IPoIB: Fix build now that neighbour destructor is in neigh_params IB/uverbs: Use correct alt_pkey_index in modify QP IB/umad: Add support for large RMPP transfers IB/srp: Add SCSI host attributes to show target port IB/cm: Check cm_id state before handling a REP IB/mthca: Update firmware versions IB/mthca: Optimize large messages on Sinai HCAs IB/uverbs: Fix query QP return of sq_sig_all IB: Fix modify QP checking of "current QP state" attribute IPoIB: Fix multicast race between canceling and completing IPoIB: Clean up if posting receives fails IB/mthca: Use an enum for HCA page size ...
2006-03-21Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] Fix cosmetic typo in asm/irq.h [ARM] 3367/1: CLCD mode no longer supported on the RealView boards [ARM] 3366/1: Allow the 16bpp mode configuration in the CLCD control register
2006-03-21Merge branch 'upstream-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev: (112 commits) [libata] sata_mv: fix irq port status usage [PATCH] libata: move IDENTIFY info printing from ata_dev_read_id() to ata_dev_configure() [PATCH] libata: use local *id instead of dev->id in ata_dev_configure() [PATCH] libata: check Word 88 validity in ata_id_xfer_mask() [PATCH] libata: fix class handling in ata_bus_probe() [PATCH] ahci: enable prefetching for PACKET commands libata: turn on ATAPI by default [PATCH] sata_sil24: lengthen softreset timeout [PATCH] sata_sil24: exit early from softreset if SStatus reports no device [PATCH] libata: fix missing classes[] initialization in ata_bus_probe() [PATCH] libata: kill unused xfer_mode functions [PATCH] libata: reimplement ata_set_mode() using xfer_mask helpers [PATCH] libata: use xfer_mask helpers in ata_dev_set_mode() [PATCH] libata: use ata_id_xfermask() in ata_dev_configure() [PATCH] libata: add xfer_mask handling functions [PATCH] libata: improve xfer mask constants and update ata_mode_string() [PATCH] libata: rename ATA_FLAG_FLUSH_PIO_TASK to ATA_FLAG_FLUSH_PORT_TASK [PATCH] libata: kill unused pio_task and packet_task [PATCH] libata: convert pio_task and packet_task to port_task [PATCH] libata: implement port_task ...
2006-03-21Merge kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb.git with fixupsLinus Torvalds
This merges the DVB tree, but fixes up the history that had gotten screwed up by a broken commit. The history is fixed up by re-doing the commit properly (taking the resolve from the final result of the original), and then cherry-picking the commits that followed the broken merge. * dvb: (190 commits) V4L/DVB (3545): Fixed no_overlay option and quirks on saa7134 driver V4L/DVB (3543): Fix Makefile to adapt to bt8xx/ conversion V4L/DVB (3538): Bt8xx documentation update V4L/DVB (3537a): Whitespace cleanup V4L/DVB (3533): Add WSS (wide screen signalling) module parameters V4L/DVB (3532): Moved duplicated code of ALPS BSRU6 tuner to a standalone file. V4L/DVB (3530): Kconfig: remove VIDEO_AUDIO_DECODER V4L/DVB (3529): Kconfig: add menu items for cs53l32a and wm8775 A/D converters V4L/DVB (3528): Kconfig: fix ATSC frontend menu item names by manufacturer V4L/DVB (3527): VIDEO_CPIA2 must depend on USB V4L/DVB (3525): Kconfig: remove VIDEO_DECODER V4L/DVB (3524): Kconfig: add menu items for saa7115 and saa7127 V4L/DVB (3494): Kconfig: select VIDEO_MSP3400 to build msp3400.ko V4L/DVB (3522): Fixed a trouble with other PAL standards V4L/DVB (3521): Avoid warnings at video-buf.c V4L/DVB (3514): SAA7113 doesn't have auto std chroma detection mode V4L/DVB (3513): Remove saa711x driver V4L/DVB (3509): Make a needlessly global function static. V4L/DVB (3506): Cinergy T2 dmx cleanup on disconnect V4L/DVB (3504): Medion 7134: Autodetect second bridge chip ... Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-21V4L/DVB (3513): Remove saa711x driverMauro Carvalho Chehab
Now, em28xx uses saa7115 instead of saa711x. saa7115 driver is capable of handling saa 7113, 7114 and 7115. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-03-21V4L/DVB (3445): LG TALN series: add PAL / SECAM supportMichael Krufky
- added tuner_lg_taln_pal_secam_ranges - renamed tuner 66 from TUNER_LG_NTSC_TALN_MINI to TUNER_LG_TALN - updated FlyTV mini Asus Digimatrix with new tuner Thanks-to: Rickard Osser <ricky@osser.se> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-03-21Merge branch 'origin'Linus Torvalds
Conflicts: Documentation/video4linux/CARDLIST.cx88 drivers/media/video/cx88/Kconfig drivers/media/video/em28xx/em28xx-video.c drivers/media/video/saa7134/saa7134-dvb.c Resolved as in the original merge by Mauro Carvalho Chehab
2006-03-21[MIPS] War on whitespace: cleanup initial spaces followed by tabs.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-21[MIPS] Reformat __xchg().Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-21[MIPS] Remove CONFIG_BUILD_ELF64.Ralf Baechle
This option is no longer usable with supported compilers. It will be replaced by usage of -msym32 in a separate patch. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-21[MIPS] Further sparsification for 32-bit compat code.Atsushi Nemoto
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-21[MIPS] Signal cleanupAtsushi Nemoto
Move function prototypes to asm/signal.h to detect trivial errors and add some __user tags to get rid of sparse warnings. Generated code should not be changed. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-21[MIPS] Make I/O helpers more customizableAtsushi Nemoto
1. Move ioswab*() and __mem_ioswab*() to mangle-port.h. This gets rid of CONFIG_SGI_IP22 from include/asm-mips/io.h. 2. Pass a virtual address to *ioswab*(). Then we can provide mach-specific *ioswab*() and can do every evil thing based on its argument. It could be useful on machines which have regions with different endian conversion scheme. 3. Call __swizzle_addr*() _after_ adding mips_io_port_base. This unifies the meaning of the argument of __swizzle_addr*() (always virtual address). Then mach-specific __swizzle_addr*() can do every evil thing based on the argument. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-21[MIPS] sc-rm7k.c cleanupAtsushi Nemoto
Use blast_scache_range, blast_inv_scache_range for rm7k scache routine. Output code should be logically same. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-21[MIPS] MIPS64 R2 optimizations for 64-bit endianess swapping.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-21[MIPS] Add early console for Cobalt.Peter Horton
Signed-off-by: Peter Horton <pdh@colonel-panic.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-03-20Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: (230 commits) [SPARC64]: Update defconfig. [SPARC64]: Fix 2 bugs in huge page support. [SPARC64]: CONFIG_BLK_DEV_RAM fix [SPARC64]: Optimized TSB table initialization. [SPARC64]: Allow CONFIG_MEMORY_HOTPLUG to build. [SPARC64]: Use SLAB caches for TSB tables. [SPARC64]: Don't kill the page allocator when growing a TSB. [SPARC64]: Randomize mm->mmap_base when PF_RANDOMIZE is set. [SPARC64]: Increase top of 32-bit process stack. [SPARC64]: Top-down address space allocation for 32-bit tasks. [SPARC64] bbc_i2c: Fix cpu check and add missing module license. [SPARC64]: Fix and re-enable dynamic TSB sizing. [SUNSU]: Fix missing spinlock initialization. [TG3]: Do not try to access NIC_SRAM_DATA_SIG on Sun parts. [SPARC64]: First cut at VIS simulator for Niagara. [SPARC64]: Fix system type in /proc/cpuinfo and remove bogus OBP check. [SPARC64]: Add SMT scheduling support for Niagara. [SPARC64]: Fix 32-bit truncation which broke sparsemem. [SPARC64]: Move over to sparsemem. [SPARC64]: Fix new context version SMP handling. ...
2006-03-20Merge branch 'upstream-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: (150 commits) [PATCH] ipw2100: Update version ipw2100 stamp to 1.2.2 [PATCH] ipw2100: move mutex.h include from ipw2100.c to ipw2100.h [PATCH] ipw2100: semaphore to mutexes conversion [PATCH] ipw2100: Fix radiotap code gcc warning [PATCH] ipw2100: add radiotap headers to packtes captured in monitor mode [PATCH] ipw2x00: expend Copyright to 2006 [PATCH] drivers/net/wireless/ipw2200.c: fix an array overun [PATCH] ieee80211: Don't update network statistics from off-channel packets. [PATCH] ipw2200: Update ipw2200 version stamp to 1.1.1 [PATCH] ipw2200: switch to the new ipw2200-fw-3.0 image format [PATCH] ipw2200: wireless extension sensitivity threshold support [PATCH] ipw2200: Enables the "slow diversity" algorithm [PATCH] ipw2200: Set a meaningful silence threshold value [PATCH] ipw2200: export `debug' module param only if CONFIG_IPW2200_DEBUG [PATCH] ipw2200: Change debug level for firmware error logging [PATCH] ipw2200: Filter unsupported channels out in ad-hoc mode [PATCH] ipw2200: Fix ipw_sw_reset() implementation inconsistent with comment [PATCH] ipw2200: Fix rf_kill is activated after mode change with 'disable=1' [PATCH] ipw2200: remove the WPA card associates to non-WPA AP checking [PATCH] ipw2200: Add signal level to iwlist scan output ...
2006-03-20Merge branch 'block-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/block * 'block-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/block: [PATCH] fix rmmod problems with elevator attributes, clean them up [PATCH] elevator_t lifetime rules and sysfs fixes [PATCH] noise removal: cfq-iosched.c [PATCH] don't bother with refcounting for cfq_data [PATCH] fix sysfs interaction and lifetime rules handling for queues [PATCH] regularize blk_cleanup_queue() use [PATCH] fix cfq_get_queue()/ioprio_set(2) races [PATCH] deal with rmmod/put_io_context() races [PATCH] stop elv_unregister() from rogering other iosched's data, fix locking [PATCH] stop cfq from pinning queue down [PATCH] make cfq_exit_queue() prune the cfq_io_context for that queue [PATCH] fix the exclusion for ioprio_set() [PATCH] keep sync and async cfq_queue separate [PATCH] switch to use of ->key to get cfq_data by cfq_io_context [PATCH] stop leaking cfq_data in cfq_set_request() [PATCH] fix cfq hash lookups [PATCH] fix locking in queue_requests_store() [PATCH] fix double-free in blk_init_queue_node() [PATCH] don't do exit_io_context() until we know we won't be doing any IO
2006-03-20IB/umad: Add support for large RMPP transfersJack Morgenstein
Add support for sending and receiving large RMPP transfers. The old code supports transfers only as large as a single contiguous kernel memory allocation. This patch uses linked list of memory buffers when sending and receiving data to avoid needing contiguous pages for larger transfers. Receive side: copy the arriving MADs in chunks instead of coalescing to one large buffer in kernel space. Send side: split a multipacket MAD buffer to a list of segments, (multipacket_list) and send these using a gather list of size 2. Also, save pointer to last sent segment, and retrieve requested segments by walking list starting at last sent segment. Finally, save pointer to last-acked segment. When retrying, retrieve segments for resending relative to this pointer. When updating last ack, start at this pointer. Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il> Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-03-20IB/uverbs: Return actual capacity from create SRQ operationDotan Barak
Pass actual capacity of created SRQ back to userspace, so that userspace can report accurate capacities. This requires an ABI bump, to change struct ib_uverbs_create_srq_resp. Signed-off-by: Dotan Barak <dotanb@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-03-20IB/mthca: Return actual capacity from create_srqDotan Barak
Have mthca's create_srq method return the actual capacity of the SRQ that gets created. Also update comments in <rdma/ib_verbs.h> to clarify that this is what is expected from ib_create_srq(). Signed-off-by: Dotan Barak <dotanb@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-03-20IB/uverbs: Fix alignment of struct ib_uverbs_create_qp_respRoland Dreier
The size of struct ib_uverbs_create_qp_resp is not even multiple of 8 bytes. This causes problems for low-level drivers that add private data after the structure: 32-bit userspace will look in the wrong place for a response from a 64-bit kernel. Fix this by adding a reserved field. Also, bump the ABI version because this changes the size of a structure. Pointed out by Hoang-Nam Nguyen <HNGUYEN@de.ibm.com>. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-03-20IB/uverbs: Support for query SRQ from userspaceDotan Barak
Add support to uverbs to handle querying userspace SRQs (shared receive queues), including adding an ABI for marshalling requests and responses. The kernel midlayer already has the underlying ib_query_srq() function. Signed-off-by: Dotan Barak <dotanb@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-03-20IB/uverbs: Support for query QP from userspaceDotan Barak
Add support to uverbs to handle querying userspace QPs (queue pairs), including adding an ABI for marshalling requests and responses. The kernel midlayer already has the underlying ib_query_qp() function. Signed-off-by: Dotan Barak <dotanb@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-03-20IB: Whitespace cleanupsRoland Dreier
Remove trailing whitespace and fix indentation that with spaces instead of tabs. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-03-20IB: Add ib_modify_qp_is_ok() library functionRoland Dreier
The in-kernel mthca driver contains a table of which attributes are valid for each queue pair state transition. It turns out that both other IB drivers -- ipath and ehca -- which are being prepared for merging have copied this table, errors and all. To forestall this code duplication, move this table and the code to check parameters against it into a midlayer library function, ib_modify_qp_is_ok(). Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-03-20IB: Enable FMR pool user to set page sizeOr Gerlitz
This patch allows the consumer to set the page size of "pages" mapped by the pool FMRs, which is a feature already existing in the base verbs API. On the cosmetic side it changes ib_fmr_attr.page_size field to be named page_shift. Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-03-20IB: Allow userspace to set node descriptionRoland Dreier
Expose a writable "node_desc" sysfs attribute for InfiniBand devices. This allows userspace to update the node description with information such as the node's hostname, so that IB network management software can tie its view to the real world. Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-03-20IB: Add userspace support for resizing CQsRoland Dreier
Add support to uverbs to handle resizing userspace CQs (completion queues), including adding an ABI for marshalling requests and responses. The kernel midlayer already has ib_resize_cq(). Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-03-20[ARM] Fix cosmetic typo in asm/irq.hRussell King
The IRQ resource flags are IORESOURCE_IRQ not IRQRESOURCE_IRQ. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-20Merge branch 'master'Jeff Garzik
2006-03-20Merge branch 'master'Jeff Garzik
2006-03-20[SPARC64]: Fix 2 bugs in huge page support.David S. Miller
1) huge_pte_offset() did not check the page table hierarchy elements as being empty correctly, resulting in an OOPS 2) Need platform specific hugetlb_get_unmapped_area() to handle the top-down vs. bottom-up address space allocation strategies. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Optimized TSB table initialization.David S. Miller
We only need to write an invalid tag every 16 bytes, so taking advantage of this can save many instructions compared to the simple memset() call we make now. A prefetching implementation is implemented for sun4u and a block-init store version if implemented for Niagara. The next trick is to be able to perform an init and a copy_tsb() in parallel when growing a TSB table. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Increase top of 32-bit process stack.David S. Miller
Put it one page below the top of the 32-bit address space. This gives us ~16MB more address space to work with. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Top-down address space allocation for 32-bit tasks.David S. Miller
Currently allocations are very constrained for 32-bit processes. It grows down-up from 0x70000000 to 0xf0000000 which gives about 2GB of stack + dynamic mmap() space. So support the top-down method, and we need to override the generic helper function in order to deal with D-cache coloring. With these changes I was able to squeeze out a mmap() just over 3.6GB in size in a 32-bit process. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Fix and re-enable dynamic TSB sizing.David S. Miller
This is good for up to %50 performance improvement of some test cases. The problem has been the race conditions, and hopefully I've plugged them all up here. 1) There was a serious race in switch_mm() wrt. lazy TLB switching to and from kernel threads. We could erroneously skip a tsb_context_switch() and thus use a stale TSB across a TSB grow event. There is a big comment now in that function describing exactly how it can happen. 2) All code paths that do something with the TSB need to be guarded with the mm->context.lock spinlock. This makes page table flushing paths properly synchronize with both TSB growing and TLB context changes. 3) TSB growing events are moved to the end of successful fault processing. Previously it was in update_mmu_cache() but that is deadlock prone. At the end of do_sparc64_fault() we hold no spinlocks that could deadlock the TSB grow sequence. We also have dropped the address space semaphore. While we're here, add prefetching to the copy_tsb() routine and put it in assembler into the tsb.S file. This piece of code is quite time critical. There are some small negative side effects to this code which can be improved upon. In particular we grab the mm->context.lock even for the tsb insert done by update_mmu_cache() now and that's a bit excessive. We can get rid of that locking, and the same lock taking in flush_tsb_user(), by disabling PSTATE_IE around the whole operation including the capturing of the tsb pointer and tsb_nentries value. That would work because anyone growing the TSB won't free up the old TSB until all cpus respond to the TSB change cross call. I'm not quite so confident in that optimization to put it in right now, but eventually we might be able to and the description is here for reference. This code seems very solid now. It passes several parallel GCC bootstrap builds, and our favorite "nut cruncher" stress test which is a full "make -j8192" build of a "make allmodconfig" kernel. That puts about 256 processes on each cpu's run queue, makes lots of process cpu migrations occur, causes lots of page table and TLB flushing activity, incurs many context version number changes, and it swaps the machine real far out to disk even though there is 16GB of ram on this test system. :-) Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Fix system type in /proc/cpuinfo and remove bogus OBP check.David S. Miller
Report 'sun4v' when appropriate in /proc/cpuinfo Remove all the verifications of the OBP version string. Just make sure it's there, and report it raw in the bootup logs and via /proc/cpuinfo. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Add SMT scheduling support for Niagara.David S. Miller
The mapping is a simple "(cpuid >> 2) == core" for now. Later we'll add more sophisticated code that will walk the sun4v machine description and figure this out from there. We should also add core mappings for jaguar and panther processors. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Move over to sparsemem.David S. Miller
This has been pending for a long time, and the fact that we waste a ton of ram on some configurations kind of pushed things over the edge. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Fix new context version SMP handling.David S. Miller
Don't piggy back the SMP receive signal code to do the context version change handling. Instead allocate another fixed PIL number for this asynchronous cross-call. We can't use smp_call_function() because this thing is invoked with interrupts disabled and a few spinlocks held. Also, fix smp_call_function_mask() to count "cpus" correctly. There is no guarentee that the local cpu is in the mask yet that is exactly what this code was assuming. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Bulletproof MMU context locking.David S. Miller
1) Always spin_lock_init() in init_context(). The caller essentially clears it out, or copies the mm info from the parent. In both cases we need to explicitly initialize the spinlock. 2) Always do explicit IRQ disabling while taking mm->context.lock and ctx_alloc_lock. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Do not allow mapping pages within 4GB of 64-bit VA hole.David S. Miller
The UltraSPARC T1 manual recommends this because the chip could instruction prefetch into the VA hole, and this would also make decoding certain kinds of memory access traps more difficult (because the chip sign extends certain pieces of trap state). Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Kill bogus function externs in asm/pgtable.hDavid S. Miller
These are all implemented inline earlier in the file. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Fix bugs in SUN4V cpu mondo dispatch.David S. Miller
There were several bugs in the SUN4V cpu mondo dispatch code. In fact, if we ever got a EWOULDBLOCK or other error from the hypervisor call, we'd potentially send a cpu mondo multiple times to the same cpu and even worse we could loop until the timeout resending the same mondo over and over to such cpus. So let's bulletproof this thing as follows: 1) Implement cpu_mondo_send() and cpu_state() hypervisor calls in arch/sparc64/kernel/entry.S, add prototypes to asm/hypervisor.h 2) Don't build and update the cpulist using inline functions, this was causing the cpu mask to not get updated in the caller. 3) Disable interrupts during the entire mondo send, otherwise our cpu list and/or mondo block could get overwritten if we take an interrupt and do a cpu mondo send on the current cpu. 4) Check for all possible error return types from the cpu_mondo_send() hypervisor call. In particular: HV_EOK) Our work is done, all cpus have received the mondo. HV_CPUERROR) One or more of the cpus in the cpu list we passed to the hypervisor are in error state. Use cpu_state() calls over the entries in the cpu list to see which ones. Record them in "error_mask" and report this after we are done sending the mondo to cpus which are not in error state. HV_EWOULDBLOCK) We need to keep trying. Any other error we consider fatal, we report the event and exit immediately. 5) We only timeout if forward progress is not made. Forward progress is defined as having at least one cpu get the mondo successfully in a given cpu_mondo_send() call. Otherwise we bump a counter and delay a little. If the counter hits a limit, we signal an error and report the event. Also, smp_call_function_mask() error handling reports the number of cpus incorrectly. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Use 13-bit context size always.David S. Miller
We no longer have the problems that require using the smaller sizes. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Niagara optimized XOR functions for RAID.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[SPARC64]: Fix TLB context allocation with SMT style shared TLBs.David S. Miller
The context allocation scheme we use depends upon there being a 1<-->1 mapping from cpu to physical TLB for correctness. Chips like Niagara break this assumption. So what we do is notify all cpus with a cross call when the context version number changes, and if necessary this makes them allocate a valid context for the address space they are running at the time. Stress tested with make -j1024, make -j2048, and make -j4096 kernel builds on a 32-strand, 8 core, T2000 with 16GB of ram. Signed-off-by: David S. Miller <davem@davemloft.net>