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2008-06-10powerpc: Remove arch/ppc and include/asm-ppcPaul Mackerras374-120647/+0
All the maintained platforms are now in arch/powerpc, so the old arch/ppc stuff can now go away. Acked-by: Adrian Bunk <bunk@kernel.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Becky Bruce <becky.bruce@freescale.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Jochen Friedrich <jochen@scram.de> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: Jon Loeliger <jdl@freescale.com> Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Acked-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Peter Korsgaard <jacmet@sunsite.dk> Acked-by: Scott Wood <scottwood@freescale.com> Acked-by: Sean MacLennan <smaclennan@pikatech.com> Acked-by: Segher Boessenkool <segher@kernel.crashing.org> Acked-by: Stefan Roese <sr@denx.de> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: Wolfgang Denk <wd@denx.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-09Merge branch 'merge'Paul Mackerras1-0/+2
Conflicts: arch/powerpc/sysdev/fsl_soc.c
2008-05-31[POWERPC] Export empty_zero_page and copy_page in arch/ppcTony Breeds1-0/+2
Currently ext4 and fuse fail to link if modular: ERROR: "copy_page" [fs/fuse/fuse.ko] undefined! ERROR: "empty_zero_page" [fs/ext4/ext4dev.ko] undefined! make[3]: *** [__modpost] Error 1 make[2]: *** [modules] Error 2 make[1]: *** [sub-make] Error 2 While arch ppc exists it may as well compile, so this exports those symbols (which are already exported in arch/powerpc). Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-05-14[POWERPC] Define and use TLF_RESTORE_SIGMASKRoland McGrath1-2/+2
Replace TIF_RESTORE_SIGMASK with TLF_RESTORE_SIGMASK and define our own set_restore_sigmask() function. This saves the costly SMP-safe set_bit operation, which we do not need for the sigmask flag since TIF_SIGPENDING always has to be set too. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-05-12[POWERPC] ppc: More compile fixesPaul Mackerras2-0/+2
This fixes a few more miscellaneous compile problems with ARCH=ppc. 1. Don't compile devres.c on ARCH=ppc, it doesn't have ioremap_flags. 2. Include <asm/irq.h> in setup.c for the __DO_IRQ_CANON definition. 3. Include <linux/proc_fs.h> in residual.c for the definition of create_proc_read_entry. 4. Fix xchg_ptr to be a static inline to eliminate a compiler warning. Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-05-12[POWERPC] ppc: Include <asm/cacheflush.h> in kernel/ppc_ksyms.cSegher Boessenkool1-0/+1
It needs it: arch/ppc/kernel/ppc_ksyms.c:152: error: '__flush_icache_range' undeclared here (not in a function) and a few more like that. Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-05-12[POWERPC] ppc: Use ebony_defconfig for defconfigSegher Boessenkool1-1/+1
We used to use common_defconfig, but it was removed some time ago. Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-05-06Merge branch 'for-2.6.26' of ↵Jeff Garzik1-0/+3
git://git.farnsworth.org/dale/linux-2.6-mv643xx_eth into upstream
2008-04-30Basic braille screen reader supportSamuel Thibault1-3/+0
This adds a minimalistic braille screen reader support. This is meant to be used by blind people e.g. on boot failures or when / cannot be mounted etc and thus the userland screen readers can not work. [akpm@linux-foundation.org: fix exports] Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Cc: Jiri Kosina <jikos@jikos.cz> Cc: Dmitry Torokhov <dtor@mail.ru> Acked-by: Alan Cox <alan@redhat.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29ppc/powerpc: use kbuild.h instead of defining macros in asm-offsets.cChristoph Lameter1-5/+2
Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29proper extern for late_time_initAdrian Bunk1-2/+0
Add a proper extern for late_time_init in include/linux/init.h Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29iomap: fix 64 bits resources on 32 bitsBenjamin Herrenschmidt1-2/+2
Almost all implementations of pci_iomap() in the kernel, including the generic lib/iomap.c one, copies the content of a struct resource into unsigned long's which will break on 32 bits platforms with 64 bits resources. This fixes all definitions of pci_iomap() to use resource_size_t. I also "fixed" the 64bits arch for consistency. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.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>
2008-04-28mv643xx_eth: get rid of static variables, allow multiple instancesLennert Buytenhek1-0/+3
Move mv643xx_eth's static state (ethernet register block base address and MII management interface spinlock) into a struct hanging off the shared platform device. This is necessary to support chips that contain multiple mv643xx_eth silicon blocks. Signed-off-by: Lennert Buytenhek <buytenh@marvell.com> Acked-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
2008-04-24[POWERPC] Add strncmp to arch/ppcJosh Boyer2-0/+15
Commit 0119536cd314ef95553604208c25bc35581f7f0a added an assembly version of strncmp to PowerPC. However, it changed a common header file between arch/ppc and arch/powerpc without adding strncmp to arch/ppc. This fixes that omission so that arch/ppc links again. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-24Merge branch 'powerpc-next' of ↵Paul Mackerras17-3505/+2
master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc
2008-04-21Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pci-2.6Linus Torvalds1-57/+2
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pci-2.6: (42 commits) PCI: Change PCI subsystem MAINTAINER PCI: pci-iommu-iotlb-flushing-speedup PCI: pci_setup_bridge() mustn't be __devinit PCI: pci_bus_size_cardbus() mustn't be __devinit PCI: pci_scan_device() mustn't be __devinit PCI: pci_alloc_child_bus() mustn't be __devinit PCI: replace remaining __FUNCTION__ occurrences PCI: Hotplug: fakephp: Return success, not ENODEV, when bus rescan is triggered PCI: Hotplug: Fix leaks in IBM Hot Plug Controller Driver - ibmphp_init_devno() PCI: clean up resource alignment management PCI: aerdrv_acpi.c: remove unneeded NULL check PCI: Update VIA CX700 quirk PCI: Expose PCI VPD through sysfs PCI: iommu: iotlb flushing PCI: simplify quirk debug output PCI: iova RB tree setup tweak PCI: parisc: use generic pci_enable_resources() PCI: ppc: use generic pci_enable_resources() PCI: powerpc: use generic pci_enable_resources() PCI: ia64: use generic pci_enable_resources() ...
2008-04-21Merge branch 'irq-cleanups-upstream' of ↵Linus Torvalds2-3/+4
git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/misc-2.6 * 'irq-cleanups-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/misc-2.6: [ISDN] minor irq handler cleanups drivers/char: minor irq handler cleanups [PPC] minor irq handler cleanups [BLACKFIN] minor irq handler cleanups [SPARC] minor irq handler cleanups ARM minor irq handler cleanup: avoid passing unused info to irq
2008-04-21Merge branch 'master' of ↵Linus Torvalds6-26/+8
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (202 commits) [POWERPC] Fix compile breakage for 64-bit UP configs [POWERPC] Define copy_siginfo_from_user32 [POWERPC] Add compat handler for PTRACE_GETSIGINFO [POWERPC] i2c: Fix build breakage introduced by OF helpers [POWERPC] Optimize fls64() on 64-bit processors [POWERPC] irqtrace support for 64-bit powerpc [POWERPC] Stacktrace support for lockdep [POWERPC] Move stackframe definitions to common header [POWERPC] Fix device-tree locking vs. interrupts [POWERPC] Make pci_bus_to_host()'s struct pci_bus * argument const [POWERPC] Remove unused __max_memory variable [POWERPC] Simplify xics direct/lpar irq_host setup [POWERPC] Use pseries_setup_i8259_cascade() in pseries_mpic_init_IRQ() [POWERPC] Turn xics_setup_8259_cascade() into a generic pseries_setup_i8259_cascade() [POWERPC] Move xics_setup_8259_cascade() into platforms/pseries/setup.c [POWERPC] Use asm-generic/bitops/find.h in bitops.h [POWERPC] 83xx: mpc8315 - fix USB UTMI Host setup [POWERPC] 85xx: Fix the size of qe muram for MPC8568E [POWERPC] 86xx: mpc86xx_hpcn - Temporarily accept old dts node identifier. [POWERPC] 86xx: mark functions static, other minor cleanups ...
2008-04-21[PPC] Remove mpc885ads and mpc86x ads boards from arch/ppcKumar Gala9-1947/+0
We have a board port in arch/powerpc so we dont need this one anymore. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-04-21[PPC] Remove mpc8272 ads board from arch/ppcKumar Gala10-1558/+2
We have a board port in arch/powerpc so we dont need this one anymore. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-04-20PCI: ppc: use generic pci_enable_resources()Bjorn Helgaas1-57/+2
Use the generic pci_enable_resources() instead of the arch-specific code. Unlike this arch-specific code, the generic version: - checks PCI_NUM_RESOURCES (11), not 6, resources - skips resources that have neither IORESOURCE_IO nor IORESOURCE_MEM set - skips ROM resources unless IORESOURCE_ROM_ENABLE is set - checks for resource collisions with "!r->parent", not IORESOURCE_UNSET Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-20[PPC] minor irq handler cleanupsJeff Garzik2-3/+4
- whitespace cleanups - remove pointless prototype (uses always follow func implementation) - 'irq' argument is used here purely as a local variable. rename argument to 'dummy' and define 'irq' as local to make this plain. Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Acked-by: Kumar Gala <galak@kernel.crashing.org>
2008-04-18arch: Remove unnecessary inclusions of asm/semaphore.hMatthew Wilcox1-1/+0
None of these files use any of the functionality promised by asm/semaphore.h. It's possible that they rely on it dragging in some unrelated header file, but I can't build all these files, so we'll have fix any build failures as they come up. Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
2008-04-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds27-367/+1
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (58 commits) ide: remove ide_init_default_irq() macro ide: move default IDE ports setup to ide_generic host driver ide: remove obsoleted "idex=noprobe" kernel parameter (take 2) ide: remove needless hwif->irq check from ide_hwif_configure() ide: init hwif->{io_ports,irq} explicitly in legacy VLB host drivers ide: limit legacy VLB host drivers to alpha, x86 and mips cmd640: init hwif->{io_ports,irq} explicitly cmd640: cleanup setup_device_ptrs() ide: add ide-4drives host driver (take 3) ide: remove ppc ifdef from init_ide_data() ide: remove ide_default_io_ctl() macro ide: remove CONFIG_IDE_ARCH_OBSOLETE_INIT ide: add CONFIG_IDE_ARCH_OBSOLETE_DEFAULTS (take 2) ppc/pmac: remove no longer needed IDE quirk ppc: don't include <linux/ide.h> ppc: remove ppc_ide_md ppc/pplus: remove ppc_ide_md.ide_init_hwif hook ppc/sandpoint: remove ppc_ide_md hooks ppc/lopec: remove ppc_ide_md hooks ppc/mpc8xx: remove ppc_ide_md hooks ...
2008-04-18ppc: don't include <linux/ide.h>Bartlomiej Zolnierkiewicz16-16/+0
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-18ppc: remove ppc_ide_mdBartlomiej Zolnierkiewicz4-80/+0
* Add special cases for pplus and prep to ide_default_{irq,io_base}() (+ FIXMEs about the need to use IDE platform host driver instead). * Remove no longer needed ppc_ide_md and struct ide_machdep_calls. * Then remove <linux/ide.h> include from: - arch/powerpc/kernel/setup_32.c - arch/ppc/kernel/ppc_ksyms.c - arch/ppc/kernel/setup.c - arch/ppc/platforms/pplus.c - arch/ppc/platforms/prep_setup.c There should be no functional changes caused by this patch. Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-18ppc/pplus: remove ppc_ide_md.ide_init_hwif hookBartlomiej Zolnierkiewicz1-23/+0
* Call ide_init_default_irq() for pplus in init_ide_data(). * Remove no longer needed pplus_ide_init_hwif_ports(). There should be no functional changes caused by this patch. Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-18ppc/sandpoint: remove ppc_ide_md hooksBartlomiej Zolnierkiewicz3-98/+1
* Add IDE_HFLAG_FORCE_LEGACY_IRQS host flag for Motorola-Sandpoint platform to sl82c105 host driver. * Disable ide_generic host driver in arch/ppc/configs/sandpoint_defconfig and enable sl82c105 one. * Remove ppc_ide_md hooks from arch/ppc/platforms/sandpoint.c - no need for them (sl82c105 host driver takes care of all this setup). * Then remove no longer needed <linux/ide.h> include. * Also update arch/ppc/platforms/sandpoint.h. Unfortunately (unlike lopec's case) sl82c105 host driver was not enabled in defconfing so there is a funcionality change. [ Not a big deal since sl82c105 is superior over ide_generic. ] Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-18ppc/lopec: remove ppc_ide_md hooksBartlomiej Zolnierkiewicz1-85/+0
* Add IDE_HFLAG_FORCE_LEGACY_IRQS host flag for Motorola-LoPEC platform to sl82c105 host driver. * Remove ppc_ide_md hooks from arch/ppc/platforms/lopec.c - no need for them (sl82c105 host driver takes care of all this setup). * Then remove no longer needed <linux/ide.h> include. Looking at arch/ppc/configs/lopec_defconfig: ... CONFIG_IDE_GENERIC=y CONFIG_BLK_DEV_IDEPCI=y # CONFIG_IDEPCI_SHARE_IRQ is not set # CONFIG_BLK_DEV_OFFBOARD is not set CONFIG_BLK_DEV_GENERIC=y # CONFIG_BLK_DEV_OPTI621 is not set CONFIG_BLK_DEV_SL82C105=y ... there should be no functional changes unless somebody preferred to disable sl82c105 host driver and use only ide_generic one (but why would anybody want to do such thing :-). PS It seems that lopec_defconfig hasn't been updated for ages but if somebody is going to do it please look into disabling IDE_GENERIC and BLK_DEV_GENERIC config options. Thanks. Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-18ppc/mpc8xx: remove ppc_ide_md hooksBartlomiej Zolnierkiewicz1-6/+0
* Initialize IDE ports in mpc8xx_ide_probe(). * Remove m8xx_ide_init() and ppc_ide_md hooks - no need for them (IDE mpc8xx host driver takes care of all this setup). * Remove needless 'if (irq)' and 'if (data_port >= MAX_HWIFS)' checks from m8xx_ide_init_hwif_ports(). * Remove 'ctrl_port' and 'irq' arguments from m8xx_ide_init_hwif_ports(). * Rename m8xx_ide_init_hwif_ports() to m8xx_ide_init_ports(). * Add __init tag to m8xx_ide_init_ports(). This patch fixes hwif->irq always being overriden to 0 (== auto-probe, is this even working on PPC?) because of ide_init_default_irq() call in ide.c. There should be no other functional changes. Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Vitaly Bordug <vitb@kernel.crashing.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-18ppc/ppc4xx: remove ppc_ide_md hooksBartlomiej Zolnierkiewicz1-23/+0
There are no "default" IDE ports on PPC4xx so ppc4xx_ide_init_hwif_ports() is unnecessary, remove it. Also remove no longer needed <linux/ide.h> include. There should be no functional changes caused by this patch. Cc: Josh Boyer <jwboyer@linux.vnet.ibm.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-18ppc/hdpu: remove dead IDE codeBartlomiej Zolnierkiewicz1-36/+0
Also remove now not needed <linux/ide.h> include. Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-17Generic semaphore implementationMatthew Wilcox1-131/+0
Semaphores are no longer performance-critical, so a generic C implementation is better for maintainability, debuggability and extensibility. Thanks to Peter Zijlstra for fixing the lockdep warning. Thanks to Harvey Harrison for pointing out that the unlikely() was unnecessary. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Acked-by: Ingo Molnar <mingo@elte.hu>
2008-04-07[POWERPC] Use __SPIN_LOCK_UNLOCKED macro in mpc52xx_set_psc_clkdivRobert P. J. Day1-1/+1
__SPIN_LOCK_UNLOCKED is newer and is not deprecated. Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-01[POWERPC] ppc: Remove redundant display of free swap space in show_mem()Johannes Weiner1-1/+0
show_mem() has no need to print the amount of free swap space manually because show_free_areas() does this already and is called by the former. The two outputs only differ in text formatting: printk("Free swap = %lukB\n", ...); printk("Free swap: %6ldkB\n", ...); Signed-off-by: Johannes Weiner <hannes@saeurebad.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-01[POWERPC] ppc: Replace remaining __FUNCTION__ occurrencesHarvey Harrison2-6/+6
__FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-13Merge branch 'linux-2.6'Paul Mackerras1-1/+29
2008-03-07[PPC] 8xx: swap bug-fixYuri Tikhonov1-1/+29
This makes swap routines operate correctly on the ppc_8xx based machines. Recent kernel's size makes swap feature very important on low-memory platfor those are actually non-operable without it. Signed-off-by: Yuri Tikhonov <yur@emcraft.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-02-26[POWERPC] Use FIELD_SIZEOF in arch/ppcJulia Lawall1-1/+1
Robert P.J. Day proposed to use the macro FIELD_SIZEOF in replace of code that matches its definition. The modification was made using the following semantic patch (http://www.emn.fr/x-info/coccinelle/) // <smpl> @haskernel@ @@ #include <linux/kernel.h> @depends on haskernel@ type t; identifier f; @@ - (sizeof(((t*)0)->f)) + FIELD_SIZEOF(t, f) @depends on haskernel@ type t; identifier f; @@ - sizeof(((t*)0)->f) + FIELD_SIZEOF(t, f) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-26[POWERPC] Remove dead code at KernelAltiVecDale Farnsworth1-17/+0
This code isn't referenced anywhere, so remove it. Signed-off-by: Dale Farnsworth <dale@farnsworth.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-02-15[POWERPC] PPC440EP Interrupt Triggering and Level SettingsWolfgang Ocker1-3/+3
Corrected IRQ triggering and level settings according to latest revision of the 440EP User Manual (rev 1.24 nov 16, 2007). The incorrect settings might cause a failure of the network if both onchip ethernet ports are under heavy load. Signed-off-by: Wolfgang Ocker <weo@reccoware.de> Acked-by: Stefan Roese <sr@denx.de> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-02-09ide: introduce HAVE_IDESam Ravnborg1-0/+1
To allow flexible configuration of IDE introduce HAVE_IDE. All archs except arm, um and s390 unconditionally select it. For arm the actual configuration determine if IDE is supported. This is a step towards introducing drivers/Kconfig for arm. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Acked-by: Russell King - ARM Linux <linux@arm.linux.org.uk> Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-02-08CONFIG_HIGHPTE vs. sub-page page tables.Martin Schwidefsky1-3/+6
Background: I've implemented 1K/2K page tables for s390. These sub-page page tables are required to properly support the s390 virtualization instruction with KVM. The SIE instruction requires that the page tables have 256 page table entries (pte) followed by 256 page status table entries (pgste). The pgstes are only required if the process is using the SIE instruction. The pgstes are updated by the hardware and by the hypervisor for a number of reasons, one of them is dirty and reference bit tracking. To avoid wasting memory the standard pte table allocation should return 1K/2K (31/64 bit) and 2K/4K if the process is using SIE. Problem: Page size on s390 is 4K, page table size is 1K or 2K. That means the s390 version for pte_alloc_one cannot return a pointer to a struct page. Trouble is that with the CONFIG_HIGHPTE feature on x86 pte_alloc_one cannot return a pointer to a pte either, since that would require more than 32 bit for the return value of pte_alloc_one (and the pte * would not be accessible since its not kmapped). Solution: The only solution I found to this dilemma is a new typedef: a pgtable_t. For s390 pgtable_t will be a (pte *) - to be introduced with a later patch. For everybody else it will be a (struct page *). The additional problem with the initialization of the ptl lock and the NR_PAGETABLE accounting is solved with a constructor pgtable_page_ctor and a destructor pgtable_page_dtor. The page table allocation and free functions need to call these two whenever a page table page is allocated or freed. pmd_populate will get a pgtable_t instead of a struct page pointer. To get the pgtable_t back from a pmd entry that has been installed with pmd_populate a new function pmd_pgtable is added. It replaces the pmd_page call in free_pte_range and apply_to_pte_range. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-08procfs: constify function pointer tablesJan Engelhardt1-1/+1
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Mike Frysinger <vapier@gentoo.org> Acked-By: David Howells <dhowells@redhat.com> Acked-by: Bryan Wu <bryan.wu@analog.com> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06scheduled OSS driver removalAdrian Bunk1-81/+0
This patch contains the scheduled removal of OSS drivers whose config options have been removed in 2.6.23. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06remove support for un-needed _extratext sectionRobin Getz1-5/+0
When passing a zero address to kallsyms_lookup(), the kernel thought it was a valid kernel address, even if it is not. This is because is_ksym_addr() called is_kernel_extratext() and checked against labels that don't exist on many archs (which default as zero). Since PPC was the only kernel which defines _extra_text, (in 2005), and no longer needs it, this patch removes _extra_text support. For some history (provided by Jon): http://ozlabs.org/pipermail/linuxppc-dev/2005-September/019734.html http://ozlabs.org/pipermail/linuxppc-dev/2005-September/019736.html http://ozlabs.org/pipermail/linuxppc-dev/2005-September/019751.html [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Jon Loeliger <jdl@freescale.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06Remove pointless casts from void pointersJeff Garzik2-2/+2
Mostly in and around irq handlers. Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: "Luck Tony" <tony.luck@intel.com> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Dmitry Torokhov <dtor@mail.ru> Cc: Karsten Keil <kkeil@suse.de> Acked-by: "John W. Linville" <linville@tuxdriver.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: David Brownell <david-b@pacbell.net> Cc: "Antonino A. Daplas" <adaplas@pol.net> Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Acked-by: Holger Schurig <hs4233@mail.mn-solutions.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-05add mm argument to pte/pmd/pud/pgd_freeBenjamin Herrenschmidt1-3/+3
(with Martin Schwidefsky <schwidefsky@de.ibm.com>) The pgd/pud/pmd/pte page table allocation functions get a mm_struct pointer as first argument. The free functions do not get the mm_struct argument. This is 1) asymmetrical and 2) to do mm related page table allocations the mm argument is needed on the free function as well. [kamalesh@linux.vnet.ibm.com: i386 fix] [akpm@linux-foundation.org: coding-syle fixes] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-03Move Kconfig.instrumentation to arch/Kconfig and init/KconfigMathieu Desnoyers1-2/+0
Move the instrumentation Kconfig to arch/Kconfig for architecture dependent options - oprofile - kprobes and init/Kconfig for architecture independent options - profiling - markers Remove the "Instrumentation Support" menu. Everything moves to "General setup". Delete the kernel/Kconfig.instrumentation file. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-02-03Add HAVE_KPROBESMathieu Desnoyers1-0/+1
Linus: On the per-architecture side, I do think it would be better to *not* have internal architecture knowledge in a generic file, and as such a line like depends on X86_32 || IA64 || PPC || S390 || SPARC64 || X86_64 || AVR32 really shouldn't exist in a file like kernel/Kconfig.instrumentation. It would be much better to do depends on ARCH_SUPPORTS_KPROBES in that generic file, and then architectures that do support it would just have a bool ARCH_SUPPORTS_KPROBES default y in *their* architecture files. That would seem to be much more logical, and is readable both for arch maintainers *and* for people who have no clue - and don't care - about which architecture is supposed to support which interface... Changelog: Actually, I know I gave this as the magic incantation, but now that I see it, I realize that I should have told you to just use config KPROBES_SUPPORT def_bool y instead, which is a bit denser. We seem to use both kinds of syntax for these things, but this is really what "def_bool" is there for... - Use HAVE_KPROBES - Use a select - Yet another update : Moving to HAVE_* now. - Update ARM for kprobes support. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Jeff Dike <jdike@addtoit.com> Cc: David Howells <dhowells@redhat.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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