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* percpu: use a kconfig variable to signal arch specific percpu setuptravis@sgi.com2008-01-301-0/+3
| | | | | | | | | | | | | The use of the __GENERIC_PERCPU is a bit problematic since arches may want to run their own percpu setup while using the generic percpu definitions. Replace it through a kconfig variable. Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* spinlock: lockbreak cleanupNick Piggin2008-01-301-0/+5
| | | | | | | | | | | | | | | | | | | | The break_lock data structure and code for spinlocks is quite nasty. Not only does it double the size of a spinlock but it changes locking to a potentially less optimal trylock. Put all of that under CONFIG_GENERIC_LOCKBREAK, and introduce a __raw_spin_is_contended that uses the lock data itself to determine whether there are waiters on the lock, to be used if CONFIG_GENERIC_LOCKBREAK is not set. Rename need_lockbreak to spin_needbreak, make it use spin_is_contended to decouple it from the spinlock implementation, and make it typesafe (rwlocks do not have any need_lockbreak sites -- why do they even get bloated up with that break_lock then?). Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* remove __attribute_used__Adrian Bunk2008-01-281-1/+1
| | | | | | | | | Remove the deprecated __attribute_used__. [Introduce __section in a few places to silence checkpatch /sam] Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* all archs: consolidate init and exit sections in vmlinux.lds.hSam Ravnborg2008-01-281-4/+4
| | | | | | | | | | | This patch consolidate all definitions of .init.text, .init.data and .exit.text, .exit.data section definitions in the generic vmlinux.lds.h. This is a preparational patch - alone it does not buy us much good. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* [SPARC64]: Partially revert "Constify function pointer tables."David S. Miller2008-01-231-1/+1
| | | | | | | | | | | | | This partially reverts 872e2be7c4056496c2871bd9b0f2fae6c374fe47 (Constify function pointer tables.) The solaris/socksys.c transformation wasn't valid: arch/sparc64/solaris/socksys.c:192: error: assignment of read-only variable ‘socksys_file_ops’ arch/sparc64/solaris/socksys.c:195: error: assignment of read-only variable ‘socksys_file_ops’ arch/sparc64/solaris/socksys.c:196: error: assignment of read-only variable ‘socksys_file_ops’ Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC]: Constify function pointer tables.Jan Engelhardt2008-01-222-2/+2
| | | | | Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix of section mismatch warnings.Sam Ravnborg2008-01-216-21/+24
| | | | | | | | | | | | | | | | | | Fix following Section mismatch warning in sparc64: WARNING: arch/sparc64/kernel/built-in.o(.text+0x13dec): Section mismatch: reference to .devinit.text:pci_scan_one_pbm (between 'psycho_scan_bus' and 'psycho_pbm_init') WARNING: arch/sparc64/kernel/built-in.o(.text+0x14b58): Section mismatch: reference to .devinit.text:pci_scan_one_pbm (between 'sabre_scan_bus' and 'sabre_init') WARNING: arch/sparc64/kernel/built-in.o(.text+0x15ea4): Section mismatch: reference to .devinit.text:pci_scan_one_pbm (between 'schizo_scan_bus' and 'schizo_pbm_init') WARNING: arch/sparc64/kernel/built-in.o(.text+0x17780): Section mismatch: reference to .devinit.text:pci_scan_one_pbm (between 'pci_sun4v_scan_bus' and 'pci_sun4v_get_head') WARNING: arch/sparc64/kernel/built-in.o(.text+0x17d5c): Section mismatch: reference to .devinit.text:pci_scan_one_pbm (between 'pci_fire_scan_bus' and 'pci_fire_get_head') WARNING: arch/sparc64/kernel/built-in.o(.text+0x23860): Section mismatch: reference to .devinit.text:vio_dev_release (between 'vio_create_one' and 'vio_add') WARNING: arch/sparc64/kernel/built-in.o(.text+0x23868): Section mismatch: reference to .devinit.text:vio_dev_release (between 'vio_create_one' and 'vio_add') The pci_* were all missing __init annotations. For the vio.c case it was a function with a wrong annotation which was removed. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix hypervisor TLB operation error reporting.David S. Miller2008-01-172-0/+6
| | | | | | | | | | 1) Trap level wasn't being passed down properly, we need to move it from %l4 into the correct outgoing arg register. 2) Although the TPC often provides the most direct clue, we have the caller PC so we should provide that as well. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix build with SPARSEMEM_VMEMMAP disabled.David S. Miller2008-01-121-1/+5
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Implement pci_resource_to_user()David S. Miller2007-12-261-0/+16
| | | | | | | This makes libpciaccess able to mmap() resources of the device properly. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Spelling fixesJoe Perches2007-12-201-1/+1
| | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix two kernel linear mapping setup bugs.David S. Miller2007-12-132-9/+32
| | | | | | | | | | | | | | | | This was caught and identified by Greg Onufer. Since we setup the 256M/4M bitmap table after taking over the trap table, it's possible for some 4M mapping to get loaded in the TLB beforhand which later will be 256M mappings. This can cause illegal TLB multiple-match conditions. Fix this by setting up the bitmap before we take over the trap table. Next, __flush_tlb_all() was not doing anything on hypervisor platforms. Fix by adding sun4v_mmu_demap_all() and calling it. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix endless loop in cheetah_xcall_deliver().David S. Miller2007-12-121-6/+13
| | | | | | | | We need to mask out the proper bits when testing the dispatch status register else we can see unrelated NACK bits from previous cross call sends. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix memory controller register access when non-SMP.David S. Miller2007-12-071-6/+10
| | | | | | | | | | get_cpu() always returns zero on non-SMP builds, but we really want the physical cpu number in this code in order to do the right thing. Based upon a non-SMP kernel boot failure report from Bernd Zeimetz. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Update defconfig.David S. Miller2007-12-051-4/+5
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: check for possible NULL pointer dereferenceCyrill Gorcunov2007-12-051-0/+4
| | | | | | | | This patch adds checking for possible NULL pointer dereference if of_find_property() failed. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Add missing "space"Joe Perches2007-12-051-2/+3
| | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Add missing pci_dev_putJulia Lawall2007-12-051-0/+2
| | | | | | | | There should be a pci_dev_put when breaking out of a loop that iterates over calls to pci_get_device and similar functions. Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Missing mdesc_release() in ldc_init().David S. Miller2007-12-051-5/+10
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC]: Remove duplicate includes.Lucas Woods2007-11-065-6/+0
| | | | | Signed-off-by: Lucas Woods <woodzy@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Update defconfig.David S. Miller2007-11-011-35/+34
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix build with CONFIG_NET disabled.David S. Miller2007-10-312-2/+2
| | | | | | | | We can't export verify_compat_iovec when CONFIG_NET is disabled, and consequently the Solaris compat module should also depend upon CONFIG_NET. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix build failure when CONFIG_BUG is disabled.David S. Miller2007-10-311-1/+3
| | | | | | | | | | | | | | | | | | | | | When CONFIG_BUG is turned off, the standard trick of: switch (x) { case X: ... case Y: ... default: BUG(); }; to mark impossible cases does not work because BUG() evalutes to nothing and thus GCC just sees a fallthrough code path. Add an explicit KERN_ERR log message and a do_exit() to trap this case. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Kill unused ITAG_MASK macro in ultra.SDavid S. Miller2007-10-311-7/+0
| | | | | | | | It is unused since we went to an I-cache flush that solely used the 'flush' instruction, and it's presence breaks the build when PAGE_SIZE is 512KB. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix bogus '&' conditinal in set_rtc_mmss().David S. Miller2007-10-311-1/+1
| | | | | | | | We're using '&' instead of '&&'. Noticed by Roel Kluin. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: __inline__ --> inlineDavid S. Miller2007-10-278-56/+37
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of ↵Linus Torvalds2007-10-251-1/+1
|\ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6 * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC64]: pass correct addr in get_fb_unmapped_area(MAP_FIXED)
| * [SPARC64]: pass correct addr in get_fb_unmapped_area(MAP_FIXED)Chris Wright2007-10-231-1/+1
| | | | | | | | | | | | | | | | | | Looks like the MAP_FIXED case is using the wrong address hint. I'd expect the comment "don't mess with it" means pass the request straight on through, not change the address requested to -ENOMEM. Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | More SG build fixesDavid Miller2007-10-241-1/+1
| | | | | | | | Signed-off-by: Jens Axboe <axboe@carl.home.kernel.dk>
* | SG build fixDavid Miller2007-10-241-1/+1
|/ | | | | Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jens Axboe <axboe@carl.home.kernel.dk>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds2007-10-231-2/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (39 commits) [SCSI] qla2xxx: Update version number to 8.02.00-k5. [SCSI] qla2xxx: Correct display of ISP serial-number. [SCSI] qla2xxx: Correct residual-count handling discrepancies during UNDERRUN handling. [SCSI] qla2xxx: Make driver (mostly) legacy I/O port free. [SCSI] qla2xxx: Fix issue where final flash-segment updates were falling into the slow-path write handler. [SCSI] qla2xxx: Handle unaligned sector writes during NVRAM/VPD updates. [SCSI] qla2xxx: Defer explicit interrupt-polling processing to init-time scenarios. [SCSI] qla2xxx: Resync with latest HBA SSID specification -- 2.2u. [SCSI] sym53c8xx: Remove sym_xpt_async_sent_bdr [SCSI] sym53c8xx: Remove pci_dev pointer from sym_shcb [SCSI] sym53c8xx: Make interrupt handler capable of returning IRQ_NONE [SCSI] sym53c8xx: Get rid of IRQ_FMT and IRQ_PRM [SCSI] sym53c8xx: Use scmd_printk where appropriate [SCSI] sym53c8xx: Simplify DAC DMA handling [SCSI] sym53c8xx: Remove tag_ctrl module parameter [SCSI] sym53c8xx: Remove io_ws, mmio_ws and ram_ws elements [SCSI] sym53c8xx: Remove ->device_id [SCSI] sym53c8xx: Use pdev->revision [SCSI] sym53c8xx: PCI Error Recovery support [SCSI] sym53c8xx: Stop overriding scsi_done ...
| * [SCSI] fc4: remove this and all associated driversMatthew Wilcox2007-10-171-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | This code has been slowly rotting for about eight years. It's currently impeding a few SCSI cleanups, and nobody seems to have hardware to test it any more. I talked to Dave Miller about it, and he agrees we can delete it. If anyone wants a software FC stack in future, they can retrieve this driver from git. Signed-off-by: Matthew Wilcox <matthew@wil.cx> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | sparc64: zero out dma_lengthFUJITA Tomonori2007-10-231-0/+5
| | | | | | | | | | | | | | | | zero out dma_length in the entry immediately following the last mapped entry for unmap_sg. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | Merge branch 'master' of ↵Linus Torvalds2007-10-228-125/+87
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6 * 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC64]: ARRAY_SIZE() cleanup [SPARC64]: small Makefile cleanups [SPARC64]: Stop using __do_IRQ(). [SPARC64]: Update defconfig.
| * | [SPARC64]: ARRAY_SIZE() cleanupAlejandro Martinez Ruiz2007-10-221-2/+1
| | | | | | | | | | | | | | | Signed-off-by: Alejandro Martinez Ruiz <alex@flawedcode.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC64]: small Makefile cleanupsSam Ravnborg2007-10-223-14/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A few trivial Makefile cleanups - dependencipes in head.o was all wrong - deleted - CMODEL_CFLAG was not used anywhere - NEW_GCC was then not used outside sparc64/Makefe - do not export it - FIXME seems not appropriate - all other put oprofile in drivers-y too - No reason to do -I. (and it still builds) Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC64]: Stop using __do_IRQ().David S. Miller2007-10-223-50/+53
| | | | | | | | | | | | | | | | | | | | | | | | | | | Invoke the desc->handle_irq directly in the top-level dispatch, just like other sophisticated ports. This will allow us to decrease the cost of the MSI queue dispatch. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC64]: Update defconfig.David S. Miller2007-10-211-59/+32
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Update arch/ to use sg helpersJens Axboe2007-10-224-18/+11
|/ / | | | | | | Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | Combine instrumentation menus in kernel/Kconfig.instrumentationMathieu Desnoyers2007-10-192-31/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Quoting Randy: "It seems sad that this patch sources Kconfig.marker, a 7-line file, 20-something times. Yes, you (we) don't want to put those 7 lines into 20-something different files, so sourcing is the right thing. However, what you did for avr32 seems more on the right track to me: make _one_ Instrumentation support menu that includes PROFILING, OPROFILE, KPROBES, and MARKERS and then use (source) that in all of the arches." Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Use helpers to obtain task pid in printks (arch code)Alexey Dobriyan2007-10-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | One of the easiest things to isolate is the pid printed in kernel log. There was a patch, that made this for arch-independent code, this one makes so for arch/xxx files. It took some time to cross-compile it, but hopefully these are all the printks in arch code. Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org> Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | pid namespaces: changes to show virtual ids to userPavel Emelyanov2007-10-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the largest patch in the set. Make all (I hope) the places where the pid is shown to or get from user operate on the virtual pids. The idea is: - all in-kernel data structures must store either struct pid itself or the pid's global nr, obtained with pid_nr() call; - when seeking the task from kernel code with the stored id one should use find_task_by_pid() call that works with global pids; - when showing pid's numerical value to the user the virtual one should be used, but however when one shows task's pid outside this task's namespace the global one is to be used; - when getting the pid from userspace one need to consider this as the virtual one and use appropriate task/pid-searching functions. [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: nuther build fix] [akpm@linux-foundation.org: yet nuther build fix] [akpm@linux-foundation.org: remove unneeded casts] Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org> Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Paul Menage <menage@google.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | pid namespaces: round up the APIPavel Emelianov2007-10-191-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The set of functions process_session, task_session, process_group and task_pgrp is confusing, as the names can be mixed with each other when looking at the code for a long time. The proposals are to * equip the functions that return the integer with _nr suffix to represent that fact, * and to make all functions work with task (not process) by making the common prefix of the same name. For monotony the routines signal_session() and set_signal_session() are replaced with task_session_nr() and set_task_session(), especially since they are only used with the explicit task->signal dereference. Signed-off-by: Pavel Emelianov <xemul@openvz.org> Acked-by: Serge E. Hallyn <serue@us.ibm.com> Cc: Kirill Korotaev <dev@openvz.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Cedric Le Goater <clg@fr.ibm.com> Cc: Herbert Poetzl <herbert@13thfloor.at> Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | [SPARC/64]: Consolidate of_register_driverStephen Rothwell2007-10-171-20/+0
| | | | | | | | | | | | | | | | Also of_unregister_driver. These will be shortly also used by the PowerPC code. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [SPARC64]: Check of_get_property() return in pci_determine_mem_io_space().David S. Miller2007-10-171-0/+7
| | | | | | | | | | | | | | | | | | If the PCI controller lacks the 'ranges' property nothing is going to work. Noticed by Al Viro. Signed-off-by: David S. Miller <davem@davemloft.net>
* | [SPARC64]: Fix boot failures due to bootmem.David S. Miller2007-10-171-4/+4
| | | | | | | | | | | | | | | | Do not use *alloc_bootmem_low*(), because ARCH_LOW_ADDRESS_LIMIT is 4GB and this results in boot failures if all of the physical memory in the machine is above 4GB. Signed-off-by: David S. Miller <davem@davemloft.net>
* | [SPARC64]: Implement atomic backoff.David S. Miller2007-10-172-20/+48
|/ | | | | | | | | | When the cpu count is high and contention hits an atomic object, the processors can synchronize such that some cpus continually get knocked out and cannot complete the atomic update. So implement an exponential backoff when SMP. Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-blockLinus Torvalds2007-10-174-35/+46
|\ | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-block: [SCSI] Remove full sg table memset() [SCSI] ide-scsi: remove usage of sg_last() Fix loop terminating conditions in fill_sg(). [BLOCK] Clear sg entry before filling in blk_rq_map_sg() IA64: iommu uses sg_next with an invalid sg element cciss: disable DMA refetch on Smart Array P600 swiotlb: fix map_sg failure handling SPARC64: fix iommu sg chaining [SCSI] ide-scsi: use scsi_sg_count() instead of ->use_sg
| * Fix loop terminating conditions in fill_sg().David S. Miller2007-10-172-12/+15
| | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * SPARC64: fix iommu sg chainingFUJITA Tomonori2007-10-174-23/+31
| | | | | | | | | | | | | | | | Commit 2c941a204070ab32d92d40318a3196a7fb994c00 looks incomplete. The helper functions like prepare_sg() need to support sg chaining too. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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