aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-cris (follow)
AgeCommit message (Collapse)AuthorFilesLines
2008-10-29[CRIS] Move header files from include to arch/cris/include.Jesper Nilsson310-64047/+0
Change all users of header files to correct path. Remove some unneeded headers for arch-v32. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2008-10-23[CRISv32] Remove warning in io.hJesper Nilsson1-2/+2
Variable flags need to be unsigned. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2008-10-20container freezer: add TIF_FREEZE flag to all architecturesMatt Helsley1-0/+2
This patch series introduces a cgroup subsystem that utilizes the swsusp freezer to freeze a group of tasks. It's immediately useful for batch job management scripts. It should also be useful in the future for implementing container checkpoint/restart. The freezer subsystem in the container filesystem defines a cgroup file named freezer.state. Reading freezer.state will return the current state of the cgroup. Writing "FROZEN" to the state file will freeze all tasks in the cgroup. Subsequently writing "RUNNING" will unfreeze the tasks in the cgroup. * Examples of usage : # mkdir /containers/freezer # mount -t cgroup -ofreezer freezer /containers # mkdir /containers/0 # echo $some_pid > /containers/0/tasks to get status of the freezer subsystem : # cat /containers/0/freezer.state RUNNING to freeze all tasks in the container : # echo FROZEN > /containers/0/freezer.state # cat /containers/0/freezer.state FREEZING # cat /containers/0/freezer.state FROZEN to unfreeze all tasks in the container : # echo RUNNING > /containers/0/freezer.state # cat /containers/0/freezer.state RUNNING This patch: The first step in making the refrigerator() available to all architectures, even for those without power management. The purpose of such a change is to be able to use the refrigerator() in a new control group subsystem which will implement a control group freezer. [akpm@linux-foundation.org: fix sparc] Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Signed-off-by: Matt Helsley <matthltc@us.ibm.com> Acked-by: Pavel Machek <pavel@suse.cz> Acked-by: Serge E. Hallyn <serue@us.ibm.com> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Nigel Cunningham <nigel@tuxonice.net> Tested-by: Matt Helsley <matthltc@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-16[PATCH] remove unused ibcs2/PER_SVR4 in SET_PERSONALITYMartin Schwidefsky1-1/+1
The SET_PERSONALITY macro is always called with a second argument of 0. Remove the ibcs argument and the various tests to set the PER_SVR4 personality. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-09-06Remove asm/a.out.h files for all architectures without a.out support.Adrian Bunk1-26/+0
This patch also includes the required removal of (unused) inclusion of <asm/a.out.h> <linux/a.out.h>'s in the arch/ code for these architectures. [dwmw2: updated for 2.6.27-rc] Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-08-20Reduce brokenness of CRIS headers_installDavid Woodhouse1-1/+0
I won't say 'fix', because they still look broken, although this will at least allow 'make ARCH=CRIS headers_install' to _complete_. For headers which are exported, we should probably choose between asm/arch-v10 and asm/arch-v32 by something that GCC defines -- we can't rely on a generated symlink. And we certainly can't export an arch/ directory which doesn't even exist. And the only thing that we seem to include from the arch/ directory is <asm/arch/ptrace.h> from <asm/ptrace.h> ... and that isn't exported in either arch-v10 or arch-v32 _anyway_. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-29Merge branch 'linus' into core/generic-dma-coherentIngo Molnar16-182/+17
Conflicts: arch/x86/Kconfig Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-26[PATCH] kill altrootAl Viro1-17/+0
long overdue... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-07-26dma-mapping: add the device argument to dma_mapping_error()FUJITA Tomonori1-1/+1
Add per-device dma_mapping_ops support for CONFIG_X86_64 as POWER architecture does: This enables us to cleanly fix the Calgary IOMMU issue that some devices are not behind the IOMMU (http://lkml.org/lkml/2008/5/8/423). I think that per-device dma_mapping_ops support would be also helpful for KVM people to support PCI passthrough but Andi thinks that this makes it difficult to support the PCI passthrough (see the above thread). So I CC'ed this to KVM camp. Comments are appreciated. A pointer to dma_mapping_ops to struct dev_archdata is added. If the pointer is non NULL, DMA operations in asm/dma-mapping.h use it. If it's NULL, the system-wide dma_ops pointer is used as before. If it's useful for KVM people, I plan to implement a mechanism to register a hook called when a new pci (or dma capable) device is created (it works with hot plugging). It enables IOMMUs to set up an appropriate dma_mapping_ops per device. The major obstacle is that dma_mapping_error doesn't take a pointer to the device unlike other DMA operations. So x86 can't have dma_mapping_ops per device. Note all the POWER IOMMUs use the same dma_mapping_error function so this is not a problem for POWER but x86 IOMMUs use different dma_mapping_error functions. The first patch adds the device argument to dma_mapping_error. The patch is trivial but large since it touches lots of drivers and dma-mapping.h in all the architecture. This patch: dma_mapping_error() doesn't take a pointer to the device unlike other DMA operations. So we can't have dma_mapping_ops per device. Note that POWER already has dma_mapping_ops per device but all the POWER IOMMUs use the same dma_mapping_error function. x86 IOMMUs use device argument. [akpm@linux-foundation.org: fix sge] [akpm@linux-foundation.org: fix svc_rdma] [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: fix bnx2x] [akpm@linux-foundation.org: fix s2io] [akpm@linux-foundation.org: fix pasemi_mac] [akpm@linux-foundation.org: fix sdhci] [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: fix sparc] [akpm@linux-foundation.org: fix ibmvscsi] Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Muli Ben-Yehuda <muli@il.ibm.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Avi Kivity <avi@qumranet.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-25Merge git://git.infradead.org/~dwmw2/random-2.6Linus Torvalds1-6/+0
* git://git.infradead.org/~dwmw2/random-2.6: remove dummy asm/kvm.h files firmware: create firmware binaries during 'make modules'.
2008-07-25remove dummy asm/kvm.h filesAdrian Bunk1-6/+0
This patch removes the dummy asm/kvm.h files on architectures not (yet) supporting KVM and uses the same conditional headers installation as already used for a.out.h . Also removed are superfluous install rules in the s390 and x86 Kbuild files (they are already in Kbuild.asm). Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-07-25include/asm/ptrace.h userspace headers cleanupAdrian Bunk5-3/+11
This patch contains the following cleanups for the asm/ptrace.h userspace headers: - include/asm-generic/Kbuild.asm already lists ptrace.h, remove the superfluous listings in the Kbuild files of the following architectures: - cris - frv - powerpc - x86 - don't expose function prototypes and macros to userspace: - arm - blackfin - cris - mn10300 - parisc - remove #ifdef CONFIG_'s around #define's: - blackfin - m68knommu - sh: AFAIK __SH5__ should work in both kernel and userspace, no need to leak CONFIG_SUPERH64 to userspace - xtensa: cosmetical change to remove empty #ifndef __ASSEMBLY__ #else #endif from the userspace headers Not changed by this patch is the fact that the following architectures have a different struct pt_regs depending on CONFIG_ variables: - h8300 - m68knommu - mips This does not work in userspace. Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: <linux-arch@vger.kernel.org> Cc: Roland McGrath <roland@redhat.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Acked-by: Greg Ungerer <gerg@uclinux.org> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Grant Grundler <grundler@parisc-linux.org> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Acked-by: Chris Zankel <chris@zankel.net> Acked-by: David Howells <dhowells@redhat.com> Acked-by: Paul Mackerras <paulus@samba.org> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-25clean up duplicated alloc/free_thread_infoFUJITA Tomonori1-0/+2
We duplicate alloc/free_thread_info defines on many platforms (the majority uses __get_free_pages/free_pages). This patch defines common defines and removes these duplicated defines. __HAVE_ARCH_THREAD_INFO_ALLOCATOR is introduced for platforms that do something different. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds3-148/+0
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (76 commits) ide: use proper printk() KERN_* levels in ide-probe.c ide: fix for EATA SCSI HBA in ATA emulating mode ide: remove stale comments from drivers/ide/Makefile ide: enable local IRQs in all handlers for TASKFILE_NO_DATA data phase ide-scsi: remove kmalloced struct request ht6560b: remove old history ht6560b: update email address ide-cd: fix oops when using growisofs gayle: release resources on ide_host_add() failure palm_bk3710: add UltraDMA/100 support ide: trivial sparse annotations ide: ide-tape.c sparse annotations and unaligned access removal ide: drop 'name' parameter from ->init_chipset method ide: prefix messages from IDE PCI host drivers by driver name it821x: remove DECLARE_ITE_DEV() macro it8213: remove DECLARE_ITE_DEV() macro ide: include PCI device name in messages from IDE PCI host drivers ide: remove <asm/ide.h> for some archs ide-generic: remove ide_default_{io_base,irq}() inlines (take 3) ide-generic: is no longer needed on ppc32 ...
2008-07-24ide: remove <asm-cris/ide.h>Bartlomiej Zolnierkiewicz3-148/+0
Remove <asm-cris/arch-v{10,32}/ide.h> and <asm-cris/ide.h>. This has been a broken code for some time now and needs rewrite to match IDE core code / host driver model anyway. Cc: Jesper Nilsson <Jesper.Nilsson@axis.com> Cc: Mikael Starvik <mikael.starvik@axis.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-24Merge branch 'semaphore' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/miscLinus Torvalds1-1/+0
* 'semaphore' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc: Remove __DECLARE_SEMAPHORE_GENERIC Remove asm/semaphore.h Remove use of asm/semaphore.h Add missing semaphore.h includes Remove mention of semaphores from kernel-locking
2008-07-24cris: remove unused global_flush_tlbFernando Luis Vazquez Cao1-1/+0
global_flush_tlb is declared but never used. Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp> Cc: Mikael Starvik <starvik@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architecturesAndrea Righi1-3/+0
On 32-bit architectures PAGE_ALIGN() truncates 64-bit values to the 32-bit boundary. For example: u64 val = PAGE_ALIGN(size); always returns a value < 4GB even if size is greater than 4GB. The problem resides in PAGE_MASK definition (from include/asm-x86/page.h for example): #define PAGE_SHIFT 12 #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) #define PAGE_MASK (~(PAGE_SIZE-1)) ... #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) The "~" is performed on a 32-bit value, so everything in "and" with PAGE_MASK greater than 4GB will be truncated to the 32-bit boundary. Using the ALIGN() macro seems to be the right way, because it uses typeof(addr) for the mask. Also move the PAGE_ALIGN() definitions out of include/asm-*/page.h in include/linux/mm.h. See also lkml discussion: http://lkml.org/lkml/2008/6/11/237 [akpm@linux-foundation.org: fix drivers/media/video/uvc/uvc_queue.c] [akpm@linux-foundation.org: fix v850] [akpm@linux-foundation.org: fix powerpc] [akpm@linux-foundation.org: fix arm] [akpm@linux-foundation.org: fix mips] [akpm@linux-foundation.org: fix drivers/media/video/pvrusb2/pvrusb2-dvb.c] [akpm@linux-foundation.org: fix drivers/mtd/maps/uclinux.c] [akpm@linux-foundation.org: fix powerpc] Signed-off-by: Andrea Righi <righi.andrea@gmail.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>
2008-07-24Remove asm/semaphore.hMatthew Wilcox1-1/+0
All users have now been converted to linux/semaphore.h and we don't need to keep these files around any longer. Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
2008-07-20Cris: convert to using generic dma-coherent mem allocatorDmitry Baryshkov1-0/+2
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-06-30[CRIS] Correct definition of subdirs for install_headers.Jesper Nilsson1-2/+3
Hinko Kocevar noted that the CRIS architecture subdirs were no longer exported correctly when doing install_headers. Correct this by exporting all directories as header-y. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2008-05-02cris: types: use <asm-generic/int-*.h> for the cris architectureH. Peter Anvin1-31/+2
This modifies <asm-cris/types.h> to use the <asm-generic/int-*.h> generic include files. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com>
2008-04-29kernel: Move arches to use common unaligned accessHarvey Harrison1-10/+7
Unaligned access is ok for the following arches: cris, m68k, mn10300, powerpc, s390, x86 Arches that use the memmove implementation for native endian, and the byteshifting for the opposite endianness. h8300, m32r, xtensa Packed struct for native endian, byteshifting for other endian: alpha, blackfin, ia64, parisc, sparc, sparc64, mips, sh m86knommu is generic_be for Coldfire, otherwise unaligned access is ok. frv, arm chooses endianness based on compiler settings, uses the byteshifting versions. Remove the unaligned trap handler from frv as it is now unused. v850 is le, uses the byteshifting versions for both be and le. Remove the now unused asm-generic implementation. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28cris: add constfy to pgd_offset()KOSAKI Motohiro1-1/+1
add constfy to pgd_offset() for avoid following warnings. CC mm/pagewalk.o mm/pagewalk.c: In function 'walk_page_range': mm/pagewalk.c:111: warning: passing argument 1 of 'pgd_offset' discards qualifiers from p\ ointer target type Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Matt Mackall <mpm@selenic.com> Cc: "Vegard Nossum" <vegard.nossum@gmail.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28mm: introduce pte_special pte bitNick Piggin1-0/+2
s390 for one, cannot implement VM_MIXEDMAP with pfn_valid, due to their memory model (which is more dynamic than most). Instead, they had proposed to implement it with an additional path through vm_normal_page(), using a bit in the pte to determine whether or not the page should be refcounted: vm_normal_page() { ... if (unlikely(vma->vm_flags & (VM_PFNMAP|VM_MIXEDMAP))) { if (vma->vm_flags & VM_MIXEDMAP) { #ifdef s390 if (!mixedmap_refcount_pte(pte)) return NULL; #else if (!pfn_valid(pfn)) return NULL; #endif goto out; } ... } This is fine, however if we are allowed to use a bit in the pte to determine refcountedness, we can use that to _completely_ replace all the vma based schemes. So instead of adding more cases to the already complex vma-based scheme, we can have a clearly seperate and simple pte-based scheme (and get slightly better code generation in the process): vm_normal_page() { #ifdef s390 if (!mixedmap_refcount_pte(pte)) return NULL; return pte_page(pte); #else ... #endif } And finally, we may rather make this concept usable by any architecture rather than making it s390 only, so implement a new type of pte state for this. Unfortunately the old vma based code must stay, because some architectures may not be able to spare pte bits. This makes vm_normal_page a little bit more ugly than we would like, but the 2 cases are clearly seperate. So introduce a pte_special pte state, and use it in mm/memory.c. It is currently a noop for all architectures, so this doesn't actually result in any compiled code changes to mm/memory.o. BTW: I haven't put vm_normal_page() into arch code as-per an earlier suggestion. The reason is that, regardless of where vm_normal_page is actually implemented, the *abstraction* is still exactly the same. Also, while it depends on whether the architecture has pte_special or not, that is the only two possible cases, and it really isn't an arch specific function -- the role of the arch code should be to provide primitive functions and accessors with which to build the core code; pte_special does that. We do not want architectures to know or care about vm_normal_page itself, and we definitely don't want them being able to invent something new there out of sight of mm/ code. If we made vm_normal_page an arch function, then we have to make vm_insert_mixed (next patch) an arch function too. So I don't think moving it to arch code fundamentally improves any abstractions, while it does practically make the code more difficult to follow, for both mm and arch developers, and easier to misuse. [akpm@linux-foundation.org: build fix] Signed-off-by: Nick Piggin <npiggin@suse.de> Acked-by: Carsten Otte <cotte@de.ibm.com> Cc: Jared Hulbert <jaredeh@gmail.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-27ide: add struct ide_io_ports (take 3)Bartlomiej Zolnierkiewicz1-7/+4
* Add struct ide_io_ports and use it instead of `unsigned long io_ports[]` in ide_hwif_t. * Rename io_ports[] in hw_regs_t to io_ports_array[]. * Use un-named union for 'unsigned long io_ports_array[]' and 'struct ide_io_ports io_ports' in hw_regs_t. * Remove IDE_*_OFFSET defines. v2: * scc_pata.c build fix from Stephen Rothwell. v3: * Fix ctl_adrr typo in Sparc-specific part of ns87415.c. (Noticed by Andrew Morton) Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-17Generic semaphore implementationMatthew Wilcox2-211/+1
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>
2008-04-02kvm: provide kvm.h for all architecture: fixes headers_installChristian Borntraeger1-0/+6
Currently include/linux/kvm.h is not considered by make headers_install, because Kbuild cannot handle " unifdef-$(CONFIG_FOO) += foo.h. This problem was introduced by commit fb56dbb31c4738a3918db81fd24da732ce3b4ae6 Author: Avi Kivity <avi@qumranet.com> Date: Sun Dec 2 10:50:06 2007 +0200 KVM: Export include/linux/kvm.h only if $ARCH actually supports KVM Currently, make headers_check barfs due to <asm/kvm.h>, which <linux/kvm.h> includes, not existing. Rather than add a zillion <asm/kvm.h>s, export kvm. only if the arch actually supports it. Signed-off-by: Avi Kivity <avi@qumranet.com> which makes this an 2.6.25 regression. One way of solving the issue is to enhance Kbuild, but Avi and David conviced me, that changing headers_install is not the way to go. This patch changes the definition for linux/kvm.h to unifdef-y. If  unifdef-y is used for linux/kvm.h "make headers_check" will fail on all architectures without asm/kvm.h. Therefore, this patch also provides asm/kvm.h on all architectures. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Avi Kivity <avi@qumranet.com> Cc: Sam Ravnborg <sam@ravnborg.org Cc: David Woodhouse <dwmw2@infradead.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>
2008-03-04cris: correct syscall numbers in unistd.h for timerfd_settime and timerfd_gettimeJesper Nilsson1-3/+3
Last commit for unistd was not correct, it only had a partial update of syscall numbers for __NR_timerfd_settime and __NR_timerfd_gettime. Also, NR_syscalls was not incremented for the new syscalls. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Mikael Starvik <mikael.starvik@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04cris: correct usage of __user for copy to and from user space in lib/usercopy and uaccess.hJesper Nilsson1-44/+9
Function __copy_user_zeroing in arch/lib/usercopy.c had the wrong parameter set as __user, and in include/asm-cris/uaccess.h, it was not set at all for some of the calling functions. This will cut the number of warnings quite dramatically when using sparse. While we're here, remove useless CVS log and correct confusing typo. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Mikael Starvik <mikael.starvik@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-08Merge branch 'cris' of git://www.jni.nu/crisLinus Torvalds100-742/+18506
* 'cris' of git://www.jni.nu/cris: (158 commits) CRIS v32: Remove hwregs/timer_defs.h, it is now architecture specific. CRIS v32: Change drivers/i2c.c locking. CRIS v32: Rewrite ARTPEC-3 gpio driver to avoid volatiles and general cleanup. CRIS: Add new timerfd syscall entries. MAINTAINERS: Add my information for the CRIS port. CRIS v32: Correct spelling of bandwidth in function name. CRIS v32: Clean up nandflash.c for ARTPEC-3 and ETRAX FS. CRIS v10: Cleanup of drivers/gpio.c CRIS v10: drivers/net/cris/eth_v10.c rename LED defines to CRIS_LED to avoid name clash. CRIS: Make io_pwm_set_period members unsigned in etraxgpio.h CRIS: Move ETRAX_AXISFLASHMAP to common Kconfig file. CRIS: Drop regs parameter from call to profile_tick in kernel/time.c CRIS v32: Fix minor formatting issue in mach-a3/io.c CRIS v32: Initialize GIO even if we're rambooting in kernel/head.S CRIS v32: Remove kernel/arbiter.c, it now exists in machine dependent directory. CRIS v32: Minor changes to avoid errors in asm-cris/arch-v32/hwregs/reg_rdwr.h CRIS v32: arch-v32/hwregs/intr_vect_defs.h moved to machine dependent directory. CRIS v32: Correct offset for TASK_pid in asm-cris/arch-v32/offset.h CRIS v32: Move register map header to machine dependent directory. CRIS v32: Let compiler know that memory is clobbered after a break op. ...
2008-02-08CONFIG_HIGHPTE vs. sub-page page tables.Martin Schwidefsky2-4/+11
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>
2008-02-08avoid overflows in kernel/time.cH. Peter Anvin1-1/+1
When the conversion factor between jiffies and milli- or microseconds is not a single multiply or divide, as for the case of HZ == 300, we currently do a multiply followed by a divide. The intervening result, however, is subject to overflows, especially since the fraction is not simplified (for HZ == 300, we multiply by 300 and divide by 1000). This is exposed to the user when passing a large timeout to poll(), for example. This patch replaces the multiply-divide with a reciprocal multiplication on 32-bit platforms. When the input is an unsigned long, there is no portable way to do this on 64-bit platforms there is no portable way to do this since it requires a 128-bit intermediate result (which gcc does support on 64-bit platforms but may generate libgcc calls, e.g. on 64-bit s390), but since the output is a 32-bit integer in the cases affected, just simplify the multiply-divide (*3/10 instead of *300/1000). The reciprocal multiply used can have off-by-one errors in the upper half of the valid output range. This could be avoided at the expense of having to deal with a potential 65-bit intermediate result. Since the intent is to avoid overflow problems and most of the other time conversions are only semiexact, the off-by-one errors were considered an acceptable tradeoff. At Ralf Baechle's suggestion, this version uses a Perl script to compute the necessary constants. We already have dependencies on Perl for kernel compiles. This does, however, require the Perl module Math::BigInt, which is included in the standard Perl distribution starting with version 5.8.0. In order to support older versions of Perl, include a table of canned constants in the script itself, and structure the script so that Math::BigInt isn't required if pulling values from said table. Running the script requires that the HZ value is available from the Makefile. Thus, this patch also adds the Kconfig variable CONFIG_HZ to the architectures which didn't already have it (alpha, cris, frv, h8300, m32r, m68k, m68knommu, sparc, v850, and xtensa.) It does *not* touch the sh or sh64 architectures, since Paul Mundt has dealt with those separately in the sh tree. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: Ralf Baechle <ralf@linux-mips.org>, Cc: Sam Ravnborg <sam@ravnborg.org>, Cc: Paul Mundt <lethal@linux-sh.org>, Cc: Richard Henderson <rth@twiddle.net>, Cc: Michael Starvik <starvik@axis.com>, Cc: David Howells <dhowells@redhat.com>, Cc: Yoshinori Sato <ysato@users.sourceforge.jp>, Cc: Hirokazu Takata <takata@linux-m32r.org>, Cc: Geert Uytterhoeven <geert@linux-m68k.org>, Cc: Roman Zippel <zippel@linux-m68k.org>, Cc: William L. Irwin <sparclinux@vger.kernel.org>, Cc: Chris Zankel <chris@zankel.net>, Cc: H. Peter Anvin <hpa@zytor.com>, Cc: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-08asm-*/posix_types.h: scrub __GLIBC__Mike Frysinger1-4/+0
Some arches (like alpha and ia64) already have a clean posix_types.h header. This brings all the others in line by removing all references to __GLIBC__ (and some undocumented __USE_ALL). Signed-off-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Ulrich Drepper <drepper@redhat.com> Cc: Roland McGrath <roland@redhat.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>
2008-02-08aout: move STACK_TOP[_MAX] to asm/processor.hDavid Howells2-6/+3
Move STACK_TOP[_MAX] out of asm/a.out.h and into asm/processor.h as they're required whether or not A.OUT format is available. Signed-off-by: David Howells <dhowells@redhat.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>
2008-02-08CRIS v32: Remove hwregs/timer_defs.h, it is now architecture specific.Jesper Nilsson1-266/+0
- File is moved to arch-v32/mach-fs/hwregs/timer_defs.h
2008-02-08CRIS: Add new timerfd syscall entries.Jesper Nilsson1-1/+3
2008-02-08CRIS v32: Correct spelling of bandwidth in function name.Jesper Nilsson1-1/+1
2008-02-08CRIS: Make io_pwm_set_period members unsigned in etraxgpio.hJesper Nilsson1-2/+2
2008-02-08CRIS v32: Minor changes to avoid errors in asm-cris/arch-v32/hwregs/reg_rdwr.hJesper Nilsson1-4/+6
- Add ifdef around macros to read and write hardware registers - Add parens around REG_READ expression to avoid possible precedence errors. - Remove useless CVS id tag.
2008-02-08CRIS v32: arch-v32/hwregs/intr_vect_defs.h moved to machine dependent directory.Jesper Nilsson1-225/+0
2008-02-08CRIS v32: Correct offset for TASK_pid in asm-cris/arch-v32/offset.hJesper Nilsson1-1/+1
2008-02-08CRIS v32: Move register map header to machine dependent directory.Jesper Nilsson1-103/+0
This file is machine dependent, and needs to be in asm-cris/arch-v32/mach-fs/hwregs/reg_map.h instead.
2008-02-08CRIS v32: Let compiler know that memory is clobbered after a break op.Jesper Nilsson1-7/+14
2008-02-08CRIS v32: Remove SMP stub from asm-cris/arch-v32/system.hJesper Nilsson1-9/+0
CRIS v32 is not SMP.
2008-02-08CRIS v32: Completely rework spinlocks for ETRAX FS and ARTPEC-3Jesper Nilsson1-105/+67
2008-02-08CRIS v32: Change name for simulator config in asm-cris/arch-v32/processor.hJesper Nilsson1-1/+1
2008-02-08CRIS v32: Add prototype for crisv32_pinmux_dealloc_fixed in asm-cris/arch-v32/pinmux.hJesper Nilsson1-0/+1
Deallocation was not possible before, but is now.
2008-02-08CRIS v32: Change name for simulator config in asm-cris/arch-v32/page.hJesper Nilsson1-2/+2
Also, fix a typo.
2008-02-08CRIS v32: Remove juliette.h, it is not supported for CRIS v32.Jesper Nilsson1-326/+0
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.