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* [PATCH] sparc64 pt_regs fixesAl Viro2006-10-08
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sparc32 pt_regs fixesAl Viro2006-10-08
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge branch 'irq-fixes' of git://git.parisc-linux.org/git/linux-2.6Linus Torvalds2006-10-08
|\ | | | | | | | | | | | | | | | | * 'irq-fixes' of git://git.parisc-linux.org/git/linux-2.6: [PARISC] More pt_regs removal [PARISC] pdc_init no longer exists [PARISC] Make firmware calls irqsafe-ish... [PA-RISC] Fix boot breakage [PARISC] Use set_irq_regs
| * [PARISC] pdc_init no longer existsMatthew Wilcox2006-10-07
| | | | | | | | | | | | Just a stale prototype Signed-off-by: Matthew Wilcox <matthew@wil.cx>
* | [PATCH] x86_64 irq: Allocate a vector across all cpus for genapic_flat.Eric W. Biederman2006-10-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The problem we can't take advantage of lowest priority delivery mode if the vectors are allocated for only one cpu at a time. Nor can we work around hardware that assumes lowest priority delivery mode is always used with several cpus. So this patch introduces the concept of a vector_allocation_domain. A set of cpus that will receive an irq on the same vector. Currently the code for implementing this is placed in the genapic structure so we can vary this depending on how we are using the io_apics. This allows us to restore the previous behaviour of genapic_flat without removing the benefits of having separate vector allocation for large machines. This should also fix the problem report where a hyperthreaded cpu was receving the irq on the wrong hyperthread when in logical delivery mode because the previous behaviour is restored. This patch properly records our allocation of the first 16 irqs to the first 16 available vectors on all cpus. This should be fine but it may run into problems with multiple interrupts at the same interrupt level. Except for some badly maintained comments in the code and the behaviour of the interrupt allocator I have no real understanding of that problem. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] i386/x86_64: Remove global IO_APIC_VECTOREric W. Biederman2006-10-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Which vector an irq is assigned to now varies dynamically and is not needed outside of io_apic.c. So remove the possibility of accessing the information outside of io_apic.c and remove the silly macro that makes looking for users of irq_vector difficult. The fact this compiles ensures there aren't any more pieces of the old CONFIG_PCI_MSI weirdness that I failed to remove. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [MIPS] Complete fixes after removal of pt_regs argument to int handlers.Ralf Baechle2006-10-07
| | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | Merge branch 'merge' of ↵Linus Torvalds2006-10-07
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: [POWERPC] PReP fixup after irq changes [POWERPC] SPU fixup after irq changes [POWERPC] Fix up after irq changes [POWERPC] Fix iseries/smp.c for irq breakage [POWERPC] Fix viocons for irq breakage [POWERPC] Update iseries_defconfig [POWERPC] Fix fsl_soc build breaks [POWERPC] Minor fix for bootargs property [POWERPC] Update MTFSF_L() comment [POWERPC] Update pSeries defconfig for SATA [POWERPC] Don't get PCI IRQ from OF for devices with no IRQ [POWERPC] Fix zImage decompress location [POWERPC] linux,tce-size property is 32 bits [POWERPC] Add DTS for MPC8349E-mITX board [POWERPC] Fix harmless typo [PPC] Fix some irq breakage with ARCH=ppc
| * | [POWERPC] PReP fixup after irq changesOlaf Hering2006-10-07
| | | | | | | | | | | | | | | | | | | | | Compile fixes for PReP in ARCH=ppc. Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Fix up after irq changesOlaf Hering2006-10-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | Remove struct pt_regs * from all handlers. Also remove the regs argument from get_irq() functions. Compile tested with arch/powerpc/config/* and arch/ppc/configs/prep_defconfig Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Update MTFSF_L() commentAnton Blanchard2006-10-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | David Woodhouse points out that the comment accompanying the MTFSF_L macro is misleading. We should make it clear that the L bit is ignored on older CPUS, not the entire instruction. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [PPC] Fix some irq breakage with ARCH=ppcPaul Mackerras2006-10-06
| | | | | | | | | Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | [PATCH] m32r pt_regs fixesAl Viro2006-10-07
| | | | | | | | | | | | | | | | | | | | | ... and now with irq_regs.h not forgotten... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] minimal alpha pt_regs fixesAl Viro2006-10-07
| | | | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] m68k pt_regs fixesAl Viro2006-10-07
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | m68k_handle_int() split in two functions: __m68k_handle_int() takes pt_regs * and does set_irq_regs(); m68k_handle_int() doesn't get pt_regs *. Places where we used to call m68k_handle_int() recursively with the same pt_regs have simply lost the second argument, the rest is switched to __m68k_handle_int(). The rest of patch is just dropping pt_regs * where needed. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Build fixes for struct pt_regs removalMatthew Wilcox2006-10-06
| | | | | | | | Signed-off-by: Matthew Wilcox <matthew@wil.cx>
* | Merge branch 'linus' of master.kernel.org:/pub/scm/linux/kernel/git/perex/alsaLinus Torvalds2006-10-06
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'linus' of master.kernel.org:/pub/scm/linux/kernel/git/perex/alsa: [ALSA] version 1.0.13 [ALSA] sound/pci/au88x0/au88x0.c: ioremap balanced with iounmap [ALSA] Handle file operations during snd_card disconnects using static file->f_op [ALSA] emu10k1: Fix outl() in snd_emu10k1_resume_regs() [ALSA] Repair snd-usb-usx2y for usb 2.6.18 [ALSA] Fix bug in snd-usb-usx2y's usX2Y_pcms_lock_check() [ALSA] Dereference after free in snd_hwdep_release() [ALSA] Fix memory leak in sound/isa/es18xx.c [ALSA] hda-intel - New pci id for Nvidia MCP61 [ALSA] Add new subdevice ids for hda-intel [ALSA] WM9712 fixes for ac97_patch.c [ALSA] hda/patch_si3054: new codec vendor IDs
| * | [ALSA] version 1.0.13Jaroslav Kysela2006-10-06
| | | | | | | | | | | | Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| * | [ALSA] Handle file operations during snd_card disconnects using static ↵Karsten Wiese2006-10-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | file->f_op Alsa used to kmalloc one file->f_op per file per disconnecting snd_card. This led to oopses sometimes when file->f_op was freed before __fput() finished. Patch adds a virtual device for disconnect: VDD. VDD consists of: LIST_HEAD(shutdown_files) protected by DEFINE_SPINLOCK(shutdown_mutex) static struct file_operations snd_shutdown_f_ops and functions assigned to it Additions to struct snd_monitor_file to specify if instance is hidden by VDD or not. A VDD's instance is created in snd_card_disconnect() under the card->files_lock. cleaned up in snd_card_file_remove() under the card->files_lock. Signed-off-by: Karsten Wiese <fzu@wemgehoertderstaat.de> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
* | | [PATCH] make kernels with CONFIG_X86_GENERIC and !CONFIG_SMP compilableJiri Kosina2006-10-06
|/ / | | | | | | | | | | | | | | | | | | CONFIG_X86_GENERIC is not exclusively CONFIG_SMP, as mach-default/ could be compiled also for UP archs. The patch fixes compilation error in include/asm/mach-summit/mach_apic.h in case CONFIG_X86_GENERIC && !CONFIG_SMP Signed-off-by: Jiri Kosina <jikos@jikos.cz> Acked-by: Keith Mannthey <kmannth@us.ibm.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Initial blind fixup for arm for irq changesLinus Torvalds2006-10-06
| | | | | | | | | | | | | | Untested, but this should fix up the bulk of the totally mechanical issues, and should make the actual detail fixing easier. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6Linus Torvalds2006-10-06
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: [S390] Use CONFIG_GENERIC_TIME and define TOD clock source. [PATCH] sysrq: irq change build fix. [S390] irq change build fixes. [S390] cio: 0 is a valid chpid. [S390] monwriter buffer limit. [S390] ap bus poll thread priority.
| * | [S390] irq change build fixes.Heiko Carstens2006-10-06
| |/ | | | | | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | [PATCH] um: irq changes break buildPekka Enberg2006-10-06
| | | | | | | | | | | | | | | | | | | | | | | | Fixup broken UML build due to 7d12e780e003f93433d49ce78cfedf4b4c52adc5 "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>
* | [PATCH] knfsd: tidy up up meaning of 'buffer size' in nfsd/sunrpcNeilBrown2006-10-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] mmc: multi sector write transfersPierre Ossman2006-10-06
| | | | | | | | | | | | | | | | | | | | | | 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: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] sched: fix a kerneldoc error on is_init()Henne2006-10-06
| | | | | | | | | | | | | | | | | | 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: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] Fix typo in "syntax error if percpu macros are incorrectly used" patchJan Blunck2006-10-06
| | | | | | | | | | | | | | | | | | | | | | 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: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] m68k: dma_alloc_coherent() has gfp_t as the last argumentAl Viro2006-10-06
| | | | | | | | | | | | | | | | | | 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: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] m68k: fix NBPG defineRoman Zippel2006-10-06
| | | | | | | | | | | | | | | | | | | | | | | | 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: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] m68k: small system.h cleanupRoman Zippel2006-10-06
| | | | | | | | | | | | | | | | avoid unnecessary xchg() use in set_mb() Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] m68k: cleanup string functionsRoman Zippel2006-10-06
| | | | | | | | | | | | | | | | | | | | - cleanup asm of string functions - deinline strncat()/strncmp() - provide non-inlined strcpy() Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] provide tickadj defineRoman Zippel2006-10-06
| | | | | | | | | | | | | | | | Provide a tickadj compatibility define for archs still using it. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] page fault retry with NOPAGE_REFAULTBenjamin Herrenschmidt2006-10-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] Fix WARN_ON / WARN_ON_ONCE regressionAndrew Morton2006-10-06
|/ | | | | | | | | | | | | | | | | | | | | | | | | 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: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells2006-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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)
* IRQ: Typedef the IRQ handler function typeDavid Howells2006-10-05
| | | | | | | Typedef the IRQ handler function type. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1356d1e5fd256997e3d3dce0777ab787d0515c7a commit)
* IRQ: Typedef the IRQ flow handler function typeDavid Howells2006-10-05
| | | | | | | Typedef the IRQ flow handler function type. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 8e973fbdf5716b93a0a8c0365be33a31ca0fa351 commit)
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpcLinus Torvalds2006-10-04
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: [POWERPC] cell: fix bugs found by sparse [POWERPC] spiderpic: enable new style devtree support [POWERPC] Update cell_defconfig [POWERPC] spufs: add infrastructure for finding elf objects [POWERPC] spufs: support new OF device tree format [POWERPC] spufs: add support for read/write on cntl [POWERPC] spufs: remove support for ancient firmware [POWERPC] spufs: make mailbox functions handle multiple elements [POWERPC] spufs: use correct pg_prot for mapping SPU local store [POWERPC] spufs: Add infrastructure needed for gang scheduling [POWERPC] spufs: implement error event delivery to user space [POWERPC] spufs: fix context switch during page fault [POWERPC] spufs: scheduler support for NUMA. [POWERPC] spufs: cell spu problem state mapping updates
| * [POWERPC] spufs: add infrastructure for finding elf objectsArnd Bergmann2006-10-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds an 'object-id' file that the spe library can use to store a pointer to its ELF object. This was originally meant for use by oprofile, but is now also used by the GNU debugger, if available. In order for oprofile to find the location in an spu-elf binary where an event counter triggered, we need a way to identify the binary in the first place. Unfortunately, that binary itself can be embedded in a powerpc ELF binary. Since we can assume it is mapped into the effective address space of the running process, have that one write the pointer value into a new spufs file. When a context switch occurs, pass the user value to the profiler so that can look at the mapped file (with some care). Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] spufs: Add infrastructure needed for gang schedulingArnd Bergmann2006-10-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add the concept of a gang to spufs as a new type of object. So far, this has no impact whatsover on scheduling, but makes it possible to add that later. A new type of object in spufs is now a spu_gang. It is created with the spu_create system call with the flags argument set to SPU_CREATE_GANG (0x2). Inside of a spu_gang, it is then possible to create spu_context objects, which until now was only possible at the root of spufs. There is a new member in struct spu_context pointing to the spu_gang it belongs to, if any. The spu_gang maintains a list of spu_context structures that are its children. This information can then be used in the scheduler in the future. There is still a bug that needs to be resolved in this basic infrastructure regarding the order in which objects are removed. When the spu_gang file descriptor is closed before the spu_context descriptors, we leak the dentry and inode for the gang. Any ideas how to cleanly solve this are appreciated. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] spufs: implement error event delivery to user spaceArnd Bergmann2006-10-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This tries to fix spufs so we have an interface closer to what is specified in the man page for events returned in the third argument of spu_run. Fortunately, libspe has never been using the returned contents of that register, as they were the same as the return code of spu_run (duh!). Unlike the specification that we never implemented correctly, we now require a SPU_CREATE_EVENTS_ENABLED flag passed to spu_create, in order to get the new behavior. When this flag is not passed, spu_run will simply ignore the third argument now. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] spufs: scheduler support for NUMA.Mark Nutter2006-10-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds NUMA support to the the spufs scheduler. The new arch/powerpc/platforms/cell/spufs/sched.c is greatly simplified, in an attempt to reduce complexity while adding support for NUMA scheduler domains. SPUs are allocated starting from the calling thread's node, moving to others as supported by current->cpus_allowed. Preemption is gone as it was buggy, but should be re-enabled in another patch when stable. The new arch/powerpc/platforms/cell/spu_base.c maintains idle lists on a per-node basis, and allows caller to specify which node(s) an SPU should be allocated from, while passing -1 tells spu_alloc() that any node is allowed. Since the patch removes the currently implemented preemptive scheduling, it is technically a regression, but practically all users have since migrated to this version, as it is part of the IBM SDK and the yellowdog distribution, so there is not much point holding it back while the new preemptive scheduling patch gets delayed further. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds2006-10-04
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (54 commits) [SCSI] Initial Commit of qla4xxx [SCSI] raid class: handle component-add errors [SCSI] SCSI megaraid_sas: handle thrown errors [SCSI] SCSI aic94xx: handle sysfs errors [SCSI] SCSI st: fix error handling in module init, sysfs [SCSI] SCSI sd: fix module init/exit error handling [SCSI] SCSI osst: add error handling to module init, sysfs [SCSI] scsi: remove hosts.h [SCSI] scsi: Scsi_Cmnd convertion in aic7xxx_old.c [SCSI] megaraid_sas: sets ioctl timeout and updates version,changelog [SCSI] megaraid_sas: adds tasklet for cmd completion [SCSI] megaraid_sas: prints pending cmds before setting hw_crit_error [SCSI] megaraid_sas: function pointer for disable interrupt [SCSI] megaraid_sas: frame count optimization [SCSI] megaraid_sas: FW transition and q size changes [SCSI] qla2xxx: Update version number to 8.01.07-k2. [SCSI] qla2xxx: Stall mid-layer error handlers while rport is blocked. [SCSI] qla2xxx: Add MODULE_FIRMWARE tags. [SCSI] qla2xxx: Add support for host port state FC transport attribute. [SCSI] qla2xxx: Add support for fabric name FC transport attribute. ...
| * [SCSI] raid class: handle component-add errorsJeff Garzik2006-10-04
| | | | | | | | | | Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * [SCSI] scsi: device_reprobe() can failAndrew Morton2006-09-27
| | | | | | | | | | | | | | | | device_reprobe() should return an error code. When it does so, scsi_device_reprobe() should propagate it back. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| * [SCSI] sg: fixes for large page_sizeDouglas Gilbert2006-09-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This sg driver patch addresses the problem with larger page sizes reported by Brian King in this post: http://marc.theaimsgroup.com/?l=linux-scsi&m=115867718623631&w=2 Some other related matters are also addressed. Some of these prevent oopses when the SG_SCATTER_SZ or scatter_elem_sz are set to inappropriate values. The scatter_elem_sz has been tested up to 4 MB which should make the largest data transfer with one SCSI command, 32 MB less one block, achievable with a relatively small number of elements in the scatter gather list. ChangeLog: - add scatter_elem_sz boot time parameter and sysfs module parameter that is initialized to SG_SCATTER_SZ - the driver will then adjust scatter_elem_sz to be the max(given(scatter_elem_sz), PAGE_SIZE) It will also round it up, if necessary, to be a power of two - clean up sg.h header, correct bad urls and some statements that are no longer valid - make the def_reserved_size sysfs module attribute writable Signed-off-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* | [S390] Remove open-coded mem_map usage.Heiko Carstens2006-10-04
| | | | | | | | | | | | Use page_to_phys and pfn_to_page to avoid open-coded mem_map usage. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
* | [S390] incorrect placement of include.Martin Schwidefsky2006-10-04
| | | | | | | | | | | | | | | | The include of linux/smp.h needs to be done before the #if that checks for the compiler version. Seems like fallout from the inline assembly cleanup patch vs. the directed yield patch. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | [S390] Wire up sys_getcpu system call.Heiko Carstens2006-10-04
| | | | | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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