- 06 Oct, 2006 22 commits
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Pekka Enberg authored
Fixup broken UML build due to 7d12e780 "IRQ: Maintain regs pointer globally rather than passing to IRQ handlers". Cc: David Howells <dhowells@redhat.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Paolo "Blaisorblade" Giarrusso <blaisorblade@yahoo.it> Signed-off-by:
Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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NeilBrown authored
There is some confusion about the meaning of 'bufsz' for a sunrpc server. In some cases it is the largest message that can be sent or received. In other cases it is the largest 'payload' that can be included in a NFS message. In either case, it is not possible for both the request and the reply to be this large. One of the request or reply may only be one page long, which fits nicely with NFS. So we remove 'bufsz' and replace it with two numbers: 'max_payload' and 'max_mesg'. Max_payload is the size that the server requests. It is used by the server to check the max size allowed on a particular connection: depending on the protocol a lower limit might be used. max_mesg is the largest single message that can be sent or received. It is calculated as the max_payload, rounded up to a multiple of PAGE_SIZE, and with PAGE_SIZE added to overhead. Only one of the request and reply may be this size. The other must be at most one page. Cc: Greg Banks <gnb@sgi.com> Cc: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by:
Neil Brown <neilb@suse.de> Signed-off-by:
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NeilBrown authored
This fixes a bug introduced in 2.6.18. If a drive is added to a raid1 using older tools (mdadm-1.x or raidtools) then it will be included in the array without any resync happening. It has been submitted for 2.6.18.1. Signed-off-by:
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Pierre Ossman authored
SD cards extend the protocol by allowing the host to query a card how many blocks were successfully stored on the medium. This allows us to safely write chunks of blocks at once. Signed-off-by:
Pierre Ossman <drzeus@drzeus.cx> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by:
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Maciej W. Rozycki authored
This is required for the SWARM GenBus IDE interface to be recognized. Signed-off-by:
Maciej W. Rozycki <macro@linux-mips.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by:
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Henne authored
Fix a kerneldoc warning and reorderd the description for is_init(). Signed-off-by:
Henrik Kretzschmar <henne@nachtwindheim.de> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Signed-off-by:
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Jim Cromie authored
Add MAINTAINERS entries for new scx200_hrt and pc8736x_gpio drivers, and take over maintenance of scx200_gpio, authored by Christer Weinigel (which I've hacked at), who no longer has the hardware. Also take over hwmon/pc87360, authored by Jean Delvare, who's dropped maintenance to dedicate more time to hwmon subsystem. Signed-off-by:
Jim Cromie <jim.cromie@gmail.com> Cc: Jean Delvare <khali@linux-fr.org> Cc: Christer Weinigel <christer@weinigel.se> Signed-off-by:
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Jan Blunck authored
Trivial typo fix in the "syntax error if percpu macros are incorrectly used" patch. I misspelled "identifier" in all places. D'Oh! Thanks to Dirk Mueller to point this out. Signed-off-by:
Jan Blunck <jblunck@suse.de> Signed-off-by:
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Al Viro authored
annotate, fix the bogus argument of vmap() in it. Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by:
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Roman Zippel authored
The recent header cleanup removed PAGE_SIZE from the exported information as it depends on the configuration. BTW This has possibly other consequences, as the core dump code is using PAGE_SIZE directly, which may need fixing as well. Signed-off-by:
Roman Zippel <zippel@linux-m68k.org> Signed-off-by:
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Roman Zippel authored
avoid unnecessary xchg() use in set_mb() Signed-off-by:
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Roman Zippel authored
Jump to the correct exit label after exception Signed-off-by:
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Roman Zippel authored
- cleanup asm of string functions - deinline strncat()/strncmp() - provide non-inlined strcpy() Signed-off-by:
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Roman Zippel authored
Provide a tickadj compatibility define for archs still using it. Signed-off-by:
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Benjamin Herrenschmidt authored
Add a way for a no_page() handler to request a retry of the faulting instruction. It goes back to userland on page faults and just tries again in get_user_pages(). I added a cond_resched() in the loop in that later case. The problem I have with signal and spufs is an actual bug affecting apps and I don't see other ways of fixing it. In addition, we are having issues with infiniband and 64k pages (related to the way the hypervisor deals with some HV cards) that will require us to muck around with the MMU from within the IB driver's no_page() (it's a pSeries specific driver) and return to the caller the same way using NOPAGE_REFAULT. And to add to this, the graphics folks have been following a new approach of memory management that involves transparently swapping objects between video ram and main meory. To do that, they need installing PTEs from a no_page() handler as well and that also requires returning with NOPAGE_REFAULT. (For the later, they are currently using io_remap_pfn_range to install one PTE from no_page() which is a bit racy, we need to add a check for the PTE having already been installed afer taking the lock, but that's ok, they are only at the proof-of-concept stage. I'll send a patch adding a "clean" function to do that, we can use that from spufs too and get rid of the sparsemem hacks we do to create struct page for SPEs. Basically, that provides a generic solution for being able to have no_page() map hardware devices, which is something that I think sound driver folks have been asking for some time too). All of these things depend on having the NOPAGE_REFAULT exit path from no_page() handlers. Signed-off-by:
Benjamin Herrenchmidt <benh@kernel.crashing.org> Cc: Hugh Dickins <hugh@veritas.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by:
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Pekka Enberg authored
Reduce the NUMA text size of mm/slab.o a little on x86 by using a local variable to store the result of numa_node_id(). text data bss dec hex filename 16858 2584 16 19458 4c02 mm/slab.o (before) 16804 2584 16 19404 4bcc mm/slab.o (after) [akpm@osdl.org: use better names] [pbadari@us.ibm.com: fix that] Cc: Christoph Lameter <christoph@lameter.com> Signed-off-by:Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by:
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David Brownell authored
This is a more correct fix for the way the ohci hcd was referencing pt_regs in the unlink paths. Signed-off-by:
David Brownell <dbrownell@users.sourceforge.net> Cc: Greg KH <greg@kroah.com> Signed-off-by:
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Andrew Morton authored
Modules might want this. Cc: David Howells <dhowells@redhat.com> Signed-off-by:
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Andrew Morton authored
Tim and Ananiev report that the recent WARN_ON_ONCE changes cause increased cache misses with the tbench workload. Apparently due to the access to the newly-added static variable. Rearrange the code so that we don't touch that variable unless the warning is going to trigger. Also rework the logic so that the static variable starts out at zero, so we can move it into bss. It would seem logical to mark the static variable as __read_mostly too. But it would be wrong, because that would put it back into the vmlinux image, and the kernel will never read from this variable in normal operation anyway. Unless the compiler or hardware go and do some prefetching on us? For some reason this patch shrinks softirq.o text by 40 bytes. Cc: Tim Chen <tim.c.chen@intel.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "Ananiev, Leonid I" <leonid.i.ananiev@intel.com> Signed-off-by:
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Andrew Morton authored
Squash this warning: kernel/audit.c: In function 'kauditd_thread': kernel/audit.c:367: warning: no return statement in function returning non-void We might as test kthread_should_stop(), although it's not very pointful at present. The code which starts this thread looks racy - the kernel could start multiple threads. Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by:
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Andrew Morton authored
Cc: David Howells <dhowells@redhat.com> Signed-off-by:
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Olof Johansson authored
Fix up some of the buildbreaks from the irq handler changes. Signed-off-by:
Olof Johansson <olof@lixom.net> Signed-off-by:
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- 05 Oct, 2006 18 commits
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git://git.infradead.org/~dhowells/irq-2.6Linus Torvalds authored
* git://git.infradead.org/~dhowells/irq-2.6: IRQ: Maintain regs pointer globally rather than passing to IRQ handlers IRQ: Typedef the IRQ handler function type IRQ: Typedef the IRQ flow handler function type
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Peter Osterlund authored
The UDF filesystem can't be mounted in read-write mode any more, because of forgotten braces. Signed-off-by:
Peter Osterlund <petero2@telia.com> [ Duh! ] Signed-off-by:
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Randy Dunlap authored
Include linux/kallsyms.h unconditionally for print_symbol(). Signed-off-by:
Randy Dunlap <rdunlap@xenotime.net> Signed-off-by:
Andi Kleen <ak@suse.de> Signed-off-by:
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git://one.firstfloor.org/home/andi/git/linux-2.6Linus Torvalds authored
* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: [PATCH] i386: fix rwsem build bug on CONFIG_M386=y [PATCH] x86-64: Annotate interrupt frame backlink in interrupt handlers [PATCH] x86-64: Fix FPU corruption [PATCH] x86: Terminate the kernel stacks for the unwinder [PATCH] i386: Fix PCI BIOS config space access [PATCH] x86-64: Calgary IOMMU: print PCI bus numbers in hex [PATCH] x86-64: Calgary IOMMU: Update Jon's contact info [PATCH] x86-64: Calgary IOMMU: Fix off by one when calculating register space location [PATCH] x86-64: Calgary IOMMU: deobfuscate calgary_init [PATCH] i386: Update defconfig [PATCH] x86-64: Update defconfig [ Manually skipped commits that incorrectly ignored AC in kernel space. The alignment fault is defined to only happen for CPL3 anyway - Linus ]
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Frederik Deweerdt authored
commit 0181944f adds a 'extended_error_logging' global variable to qla2xxx which is defined by qla4xxx too. Trying to build both drivers results in the following error: LD drivers/scsi/built-in.o drivers/scsi/qla4xxx/built-in.o: In function `qla4xxx_slave_configure': drivers/scsi/qla4xxx/ql4_os.c:1433: multiple definition of `extended_error_logging' drivers/scsi/qla2xxx/built-in.o:drivers/scsi/qla2xxx/qla_os.c:2166: first defined here make[2]: *** [drivers/scsi/built-in.o] Error 1 make[1]: *** [drivers/scsi] Error 2 make: *** [drivers] Error 2 The following patch simply adds a qla2_ (qla4_ respectively) prefix to the variable name. Signed-off-by:
Frederik Deweerdt <frederik.deweerdt@gmail.com> Signed-off-by:
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Ingo Molnar authored
CONFIG_M386 turns on spinlock-based generic rwsems - which surprises the semaphore.S rwsem stubs. Tested both with and without CONFIG_M386. Reported-by:
Klaus Knopper <knopper@knopper.net> Triaged-by:
Adrian Bunk <bunk@stusta.de> Signed-off-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
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Andi Kleen authored
Add correct CFI annotation to the backlink on top of the interrupt stack. Signed-off-by: -
Andi Kleen authored
This reverts an earlier patch that was found to cause FPU state corruption. I think the corruption happens because unlazy_fpu() can cause FPU exceptions and when it happens after the current switch some processing would affect the state in the wrong process. Thanks to Douglas Crosher and Tom Hughes for testing. Cc: jbeulich@novell.com Signed-off-by: -
Andi Kleen authored
Always make sure RIP/EIP is 0 in the registers stored on the top of the stack of a kernel thread. This makes sure the unwinder code won't try a fallback but knows the stack has ended. AK: this patch is a bit mysterious. in theory they should be terminated anyways, but it seems to fix at least one crash. Anyways double termination probably doesn't hurt. Signed-off-by: -
Andi Kleen authored
Got broken by a earlier change. Also add a printk when no pci config method could be found. Cc: gregkh@suse.de Signed-off-by: -
Jon Mason authored
Make the references to the bus number in hex instead of decimal, as that is the way that lspci prints out the bus numbers. Signed-off-by:
Jon Mason <jdmason@kudzu.us> Signed-off-by:
Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by:
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Jon Mason authored
Also add copyright for work done after leaving IBM. Signed-off-by:
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Jon Mason authored
The purpose of the code being modified is to determine the location of the calgary chip address space. This is done by a magical formula of FE0MB-8MB*OneBasedChassisNumber+1MB*(RioNodeId-ChassisBase) to find the offset where BIOS puts it. In this formula, OneBasedChassisNumber corresponds to the NUMA node, and rionodeid is always 2 or 3 depending on which chip in the system it is. The problem was that we had an off by one error that caused us to account some busses to the wrong chip and thus give them the wrong address space. Fixes RH bugzilla #203971. Signed-off-by:
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Jon Mason authored
calgary_init's for loop does not correspond to the actual device being checked, which makes its upperbound check for array overflow useless. Changing this to a do-while loop is the correct way of doing this. There should be no possibility of spinning forever in this loop, as pci_get_device states that it will go through all iterations, then return NULL (thus breaking the loop). Signed-off-by:
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Andi Kleen authored
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Andi Kleen authored
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David Howells authored
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By:David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
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David Howells authored
Typedef the IRQ handler function type. Signed-Off-By:
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