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* Merge branch 'for-linus' of ↵Linus Torvalds2009-04-039-28/+71
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: (41 commits) m68knommu: improve compile arch switch settings m68knommu: fix 5407 ColdFire UART vector setup m68knommu: fix 5307 ColdFire UART vector setup m68knommu: fix 5249 ColdFire UART vector setup m68knommu: fix 5249 ColdFire UART setup m68knommu: fix end of uart table marker m68knommu: switch to using generic_handle_irq() m68k: merge the mmu and non-mmu versions of tlbflush.h m68knommu: introduce basic clk infrastructure m68k: merge the mmu and non-mmu versions of module.h m68knommu: add missing interrupt line definition for UART 2 m68k: merge the mmu and non-mmu versions of mmu_context.h m68k: merge the mmu and non-mmu versions of current.h m68k: merge the mmu and non-mmu versions of div64.h m68k: merge the mmu and non-mmu versions of bugs.h m68k: merge the mmu and non-mmu versions of bug.h m68k: use the mmu version of cache.h for m68knommu as well m68k: use the mmu version of bootinfo.h for m68knommu as well m68k: merge the mmu and non-mmu versions of fb.h m68k: merge the mmu and non-mmu versions of segment.h ...
| * m68knommu: improve compile arch switch settingsGreg Ungerer2009-03-301-7/+7
| | | | | | | | | | | | | | Modern versions of gcc have a better range of ColdFire optimization switches for the vairous ColdFire family members. Use these when we can. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| * m68knommu: fix 5407 ColdFire UART vector setupGreg Ungerer2009-03-241-4/+4
| | | | | | | | | | | | | | | | | | There is a couple of problems with the UART vector setup for the 5307 ColdFire UART. The ICR register access should be 8bit, not 32bit. The address of the UIVR register is wrong, it needs to be offset into the MBAR register region. Fix these. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| * m68knommu: fix 5307 ColdFire UART vector setupGreg Ungerer2009-03-241-4/+4
| | | | | | | | | | | | | | | | | | There is a couple of problems with the UART vector setup for the 5307 ColdFire UART. The ICR register access should be 8bit, not 32bit. The address of the UIVR register is wrong, it needs to be offset into the MBAR register region. Fix these. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| * m68knommu: fix 5249 ColdFire UART vector setupGreg Ungerer2009-03-241-2/+2
| | | | | | | | | | | | | | | | The address of the IVUR register is not correct, it should be offset into the MBAR region. Without this the vector is not set to the correct number. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| * m68knommu: fix 5249 ColdFire UART setupGreg Ungerer2009-03-241-2/+2
| | | | | | | | | | | | | | The ICR registers of the 5249 ColdFire processor are 8bits, not 32bits. Fix the read/write of these register to be the correct size. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| * m68knommu: fix end of uart table markerGreg Ungerer2009-03-241-1/+2
| | | | | | | | | | | | | | The UART platform data structure is missing an empty struct at the end (as the end of structure marker). Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| * m68knommu: switch to using generic_handle_irq()Greg Ungerer2009-03-241-1/+1
| | | | | | | | | | | | Switch to using generic_handle_irq() instead of the deprecated __do_IRQ(). Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| * m68knommu: introduce basic clk infrastructureGreg Ungerer2009-03-242-1/+41
| | | | | | | | | | | | | | | | Create basic support for clk API. Recent changes to the FEC driver (used by many ColdFire family parts) need this. Initially only supports getting the master clock frequency. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| * m68knommu: add a local dma_sync_single_for_cpu() functionGreg Ungerer2009-03-241-1/+7
| | | | | | | | | | | | | | | | The onboard ethernet of many ColdFire parts uses DMA. The driver is being cleaned up to use the correct DMA handling functions, and m68knommuy currently does not implement dma_sync_single_for_cpu(). Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| * m68knommu: mark all RAM as ZONE_DMAGreg Ungerer2009-03-241-5/+1
| | | | | | | | | | | | | | | | There is no reason not to put all RAM in ZONE_DMA for these simple m68k varients (same as the standard MMU m68k code does). With this in place the usual dma_alloc_coherent() work as expected. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
* | Simplify copy_thread()Alexey Dobriyan2009-04-031-1/+1
| | | | | | | | | | | | | | | | | | | | First argument unused since 2.3.11. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Alexey Dobriyan <adobriyan@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>
* | Merge branch 'master' of /home/davem/src/GIT/linux-2.6/David S. Miller2009-03-262-228/+1
|\| | | | | | | | | Conflicts: drivers/net/wimax/i2400m/usb-notif.c
| * m68knommu: m528x build fixSteven King2009-03-101-228/+0
| | | | | | | | | | | | | | | | | | | | There isn't any mcfqspi.h in the tree, and without it everything inside the #ifdef CONFIG_SPI is uncompilable. Signed-off-by: Steven King <sfking@fdwdc.com> Acked-by: Greg Ungerer <gerg@snapgear.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * m68knommu: m5206e build fixSteven King2009-03-101-0/+1
| | | | | | | | | | | | | | Signed-off-by: Steven King <sfking@fdwdc.com> Acked-by: Greg Ungerer <gerg@snapgear.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | fec: add FEC platform support to ColdFire CPU's setup codeGreg Ungerer2009-02-276-1/+374
|/ | | | | | | | | | m68knommu: add FEC platform support to ColdFire CPU's setup code Move the per-CPU FEC driver setup code into the actual platform setup code for each ColdFire CPU varient. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* m68knommu: fix 5329 ColdFire periphal addressingMatt Waddel2009-01-271-4/+4
| | | | | | | | | The 5329 ColdFire peripheral IO register addresses are not relative to the MBAR register. So fix the serial platform setup array and IRQ acking to use just the direct addresses. Signed-off-by: Matt Waddel <Matt.Waddel@freescale.com> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
* m68knommu: fix syscall restartingGreg Ungerer2009-01-272-1/+16
| | | | | | | Make restart blocks working, required for proper syscall restarting. Derived from same changes for m68k arch by Andreas Schwab <schwab@suse.de> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
* m68knommu: remove the obsolete and long unused comempci chip supportGreg Ungerer2009-01-272-981/+0
| | | | Signed-off-by: Greg Ungerer <gerg@uclinux.org>
* m68knommu: remove the no longer used PCI support optionAdrian Bunk2009-01-271-17/+0
| | | | | Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
* m68knommu: remove obsolete and unused eLIA boardAdrian Bunk2009-01-273-8/+1
| | | | | | | | Greg Ungerer said about this board: Only ever a handful where made, and that was in 1999. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
* m68knommu: set NO_DMAAdrian Bunk2009-01-271-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | m68knommu does not set the Kconfig NO_DMA variable, but also does not provide the required functions, resulting in the following build error triggered by commit a40c24a13366e324bc0ff8c3bb107db89312c984 (net: Add SKB DMA mapping helper functions.): <-- snip --> .. LD vmlinux net/built-in.o: In function `skb_dma_unmap': (.text+0xac5e): undefined reference to `dma_unmap_single' net/built-in.o: In function `skb_dma_unmap': (.text+0xac7a): undefined reference to `dma_unmap_page' net/built-in.o: In function `skb_dma_map': (.text+0xacdc): undefined reference to `dma_map_single' net/built-in.o: In function `skb_dma_map': (.text+0xace8): undefined reference to `dma_mapping_error' net/built-in.o: In function `skb_dma_map': (.text+0xad10): undefined reference to `dma_map_page' net/built-in.o: In function `skb_dma_map': (.text+0xad82): undefined reference to `dma_unmap_page' net/built-in.o: In function `skb_dma_map': (.text+0xadc6): undefined reference to `dma_unmap_single' make[1]: *** [vmlinux] Error 1 <-- snip --> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
* m68knommu: use one exist from execptionSebastian Siewior2009-01-271-13/+2
| | | | | | | | | | | | | | | | | | Part of the code that did not make sense to me got removed by Greg. This is part two: The first compare is to check whether the interrupts are disabled or not. Depending on the result we exectute the RESTORE_ALL macro is not only restoring the stack but also returning to caller. The test for pending softirq has been removed because it is allready done in irq_exit(). Since system_call() is allso using the SAVE_ALL macro and returning via ret_from_exception label I see no reason why we could not do this here as well. This is also handy because if we return from the timer interrupt and we need to resched than we check for this :) Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
* Merge branch 'for-next' of ↵Linus Torvalds2009-01-26139-15835/+0
|\ | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68k,m68knommu: merge header files Resolve trivial conflict in arch/m68knommu/include/asm/Kbuild
| * m68k,m68knommu: merge header filesSam Ravnborg2009-01-16139-15838/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge header files for m68k and m68knommu to the single location: arch/m68k/include/asm The majority of this patch was the result of the script that is included in the changelog below. The script was originally written by Arnd Bergman and exten by me to cover a few more files. When the header files differed the script uses the following: The original m68k file is named <file>_mm.h [mm for memory manager] The m68knommu file is named <file>_no.h [no for no memory manager] The files uses the following include guard: This include gaurd works as the m68knommu toolchain set the __uClinux__ symbol - so this should work in userspace too. Merging the header files for m68k and m68knommu exposes the (unexpected?) ABI differences thus it is easier to actually identify these and thus to fix them. The commit has been build tested with both a m68k and a m68knommu toolchain - with success. The commit has also been tested with "make headers_check" and this patch fixes make headers_check for m68knommu. The script used: TARGET=arch/m68k/include/asm SOURCE=arch/m68knommu/include/asm INCLUDE="cachectl.h errno.h fcntl.h hwtest.h ioctls.h ipcbuf.h \ linkage.h math-emu.h md.h mman.h movs.h msgbuf.h openprom.h \ oplib.h poll.h posix_types.h resource.h rtc.h sembuf.h shmbuf.h \ shm.h shmparam.h socket.h sockios.h spinlock.h statfs.h stat.h \ termbits.h termios.h tlb.h types.h user.h" EQUAL="auxvec.h cputime.h device.h emergency-restart.h futex.h \ ioctl.h irq_regs.h kdebug.h local.h mutex.h percpu.h \ sections.h topology.h" NOMUUFILES="anchor.h bootstd.h coldfire.h commproc.h dbg.h \ elia.h flat.h m5206sim.h m520xsim.h m523xsim.h m5249sim.h \ m5272sim.h m527xsim.h m528xsim.h m5307sim.h m532xsim.h \ m5407sim.h m68360_enet.h m68360.h m68360_pram.h m68360_quicc.h \ m68360_regs.h MC68328.h MC68332.h MC68EZ328.h MC68VZ328.h \ mcfcache.h mcfdma.h mcfmbus.h mcfne.h mcfpci.h mcfpit.h \ mcfsim.h mcfsmc.h mcftimer.h mcfuart.h mcfwdebug.h \ nettel.h quicc_simple.h smp.h" FILES="atomic.h bitops.h bootinfo.h bug.h bugs.h byteorder.h cache.h \ cacheflush.h checksum.h current.h delay.h div64.h \ dma-mapping.h dma.h elf.h entry.h fb.h fpu.h hardirq.h hw_irq.h io.h \ irq.h kmap_types.h machdep.h mc146818rtc.h mmu.h mmu_context.h \ module.h page.h page_offset.h param.h pci.h pgalloc.h \ pgtable.h processor.h ptrace.h scatterlist.h segment.h \ setup.h sigcontext.h siginfo.h signal.h string.h system.h swab.h \ thread_info.h timex.h tlbflush.h traps.h uaccess.h ucontext.h \ unaligned.h unistd.h" mergefile() { BASE=${1%.h} git mv ${SOURCE}/$1 ${TARGET}/${BASE}_no.h git mv ${TARGET}/$1 ${TARGET}/${BASE}_mm.h cat << EOF > ${TARGET}/$1 EOF git add ${TARGET}/$1 } set -e mkdir -p ${TARGET} git mv include/asm-m68k/* ${TARGET} rmdir include/asm-m68k git rm ${SOURCE}/Kbuild for F in $INCLUDE $EQUAL; do git rm ${SOURCE}/$F done for F in $NOMUUFILES; do git mv ${SOURCE}/$F ${TARGET}/$F done for F in $FILES ; do mergefile $F done rmdir arch/m68knommu/include/asm rmdir arch/m68knommu/include Cc: Arnd Bergmann <arnd@arndb.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
* | Merge branch 'syscalls' of git://git390.osdl.marist.edu/pub/scm/linux-2.6Linus Torvalds2009-01-151-1/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'syscalls' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: (44 commits) [CVE-2009-0029] s390 specific system call wrappers [CVE-2009-0029] System call wrappers part 33 [CVE-2009-0029] System call wrappers part 32 [CVE-2009-0029] System call wrappers part 31 [CVE-2009-0029] System call wrappers part 30 [CVE-2009-0029] System call wrappers part 29 [CVE-2009-0029] System call wrappers part 28 [CVE-2009-0029] System call wrappers part 27 [CVE-2009-0029] System call wrappers part 26 [CVE-2009-0029] System call wrappers part 25 [CVE-2009-0029] System call wrappers part 24 [CVE-2009-0029] System call wrappers part 23 [CVE-2009-0029] System call wrappers part 22 [CVE-2009-0029] System call wrappers part 21 [CVE-2009-0029] System call wrappers part 20 [CVE-2009-0029] System call wrappers part 19 [CVE-2009-0029] System call wrappers part 18 [CVE-2009-0029] System call wrappers part 17 [CVE-2009-0029] System call wrappers part 16 [CVE-2009-0029] System call wrappers part 15 ...
| * | [CVE-2009-0029] Rename old_readdir to sys_old_readdirHeiko Carstens2009-01-141-1/+1
| |/ | | | | | | | | | | This way it matches the generic system call name convention. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
* / byteorder: make swab.h include asm/swab.h like a regular headerHarvey Harrison2009-01-152-3/+0
|/ | | | | | | | | Add swab.h to kbuild.asm and remove the individual entries from each arch, mark as unifdef as some arches have some kernel-only bits inside. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* NOMMU: Make VMAs per MM as for MMU-mode linuxDavid Howells2009-01-081-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make VMAs per mm_struct as for MMU-mode linux. This solves two problems: (1) In SYSV SHM where nattch for a segment does not reflect the number of shmat's (and forks) done. (2) In mmap() where the VMA's vm_mm is set to point to the parent mm by an exec'ing process when VM_EXECUTABLE is specified, regardless of the fact that a VMA might be shared and already have its vm_mm assigned to another process or a dead process. A new struct (vm_region) is introduced to track a mapped region and to remember the circumstances under which it may be shared and the vm_list_struct structure is discarded as it's no longer required. This patch makes the following additional changes: (1) Regions are now allocated with alloc_pages() rather than kmalloc() and with no recourse to __GFP_COMP, so the pages are not composite. Instead, each page has a reference on it held by the region. Anything else that is interested in such a page will have to get a reference on it to retain it. When the pages are released due to unmapping, each page is passed to put_page() and will be freed when the page usage count reaches zero. (2) Excess pages are trimmed after an allocation as the allocation must be made as a power-of-2 quantity of pages. (3) VMAs are added to the parent MM's R/B tree and mmap lists. As an MM may end up with overlapping VMAs within the tree, the VMA struct address is appended to the sort key. (4) Non-anonymous VMAs are now added to the backing inode's prio list. (5) Holes may be punched in anonymous VMAs with munmap(), releasing parts of the backing region. The VMA and region structs will be split if necessary. (6) sys_shmdt() only releases one attachment to a SYSV IPC shared memory segment instead of all the attachments at that addresss. Multiple shmat()'s return the same address under NOMMU-mode instead of different virtual addresses as under MMU-mode. (7) Core dumping for ELF-FDPIC requires fewer exceptions for NOMMU-mode. (8) /proc/maps is now the global list of mapped regions, and may list bits that aren't actually mapped anywhere. (9) /proc/meminfo gains a line (tagged "MmapCopy") that indicates the amount of RAM currently allocated by mmap to hold mappable regions that can't be mapped directly. These are copies of the backing device or file if not anonymous. These changes make NOMMU mode more similar to MMU mode. The downside is that NOMMU mode requires some extra memory to track things over NOMMU without this patch (VMAs are no longer shared, and there are now region structs). Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Mike Frysinger <vapier.adi@gmail.com> Acked-by: Paul Mundt <lethal@linux-sh.org>
* m68knommu: introduce asm/swab.hHarvey Harrison2009-01-073-21/+27
| | | | | Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* atomic_t: unify all arch definitionsMatthew Wilcox2009-01-071-1/+1
| | | | | | | | | | | | The atomic_t type cannot currently be used in some header files because it would create an include loop with asm/atomic.h. Move the type definition to linux/types.h to break the loop. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Cc: Huang Ying <ying.huang@intel.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>
* Merge branch 'cpus4096-for-linus-3' of ↵Linus Torvalds2009-01-031-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'cpus4096-for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (77 commits) x86: setup_per_cpu_areas() cleanup cpumask: fix compile error when CONFIG_NR_CPUS is not defined cpumask: use alloc_cpumask_var_node where appropriate cpumask: convert shared_cpu_map in acpi_processor* structs to cpumask_var_t x86: use cpumask_var_t in acpi/boot.c x86: cleanup some remaining usages of NR_CPUS where s/b nr_cpu_ids sched: put back some stack hog changes that were undone in kernel/sched.c x86: enable cpus display of kernel_max and offlined cpus ia64: cpumask fix for is_affinity_mask_valid() cpumask: convert RCU implementations, fix xtensa: define __fls mn10300: define __fls m32r: define __fls h8300: define __fls frv: define __fls cris: define __fls cpumask: CONFIG_DISABLE_OBSOLETE_CPUMASK_FUNCTIONS cpumask: zero extra bits in alloc_cpumask_var_node cpumask: replace for_each_cpu_mask_nr with for_each_cpu in kernel/time/ cpumask: convert mm/ ...
| * m68knommu: define __flsRusty Russell2009-01-011-0/+1
| | | | | | | | | | | | | | | | Like fls, but can't be handed 0 and returns the bit number. (I broke this arch in linux-next by using __fls in generic code). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* | Merge branch 'cpus4096-for-linus-2' of ↵Linus Torvalds2009-01-021-1/+1
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (66 commits) x86: export vector_used_by_percpu_irq x86: use logical apicid in x2apic_cluster's x2apic_cpu_mask_to_apicid_and() sched: nominate preferred wakeup cpu, fix x86: fix lguest used_vectors breakage, -v2 x86: fix warning in arch/x86/kernel/io_apic.c sched: fix warning in kernel/sched.c sched: move test_sd_parent() to an SMP section of sched.h sched: add SD_BALANCE_NEWIDLE at MC and CPU level for sched_mc>0 sched: activate active load balancing in new idle cpus sched: bias task wakeups to preferred semi-idle packages sched: nominate preferred wakeup cpu sched: favour lower logical cpu number for sched_mc balance sched: framework for sched_mc/smt_power_savings=N sched: convert BALANCE_FOR_xx_POWER to inline functions x86: use possible_cpus=NUM to extend the possible cpus allowed x86: fix cpu_mask_to_apicid_and to include cpu_online_mask x86: update io_apic.c to the new cpumask code x86: Introduce topology_core_cpumask()/topology_thread_cpumask() x86: xen: use smp_call_function_many() x86: use work_on_cpu in x86/kernel/cpu/mcheck/mce_amd_64.c ... Fixed up trivial conflict in kernel/time/tick-sched.c manually
| * cpumask: convert struct clock_event_device to cpumask pointers.Rusty Russell2008-12-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Impact: change calling convention of existing clock_event APIs struct clock_event_timer's cpumask field gets changed to take pointer, as does the ->broadcast function. Another single-patch change. For safety, we BUG_ON() in clockevents_register_device() if it's not set. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Ingo Molnar <mingo@elte.hu>
* | take init_fs to saner placeAl Viro2009-01-011-1/+0
|/ | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* container freezer: implement freezer cgroup subsystemMatt Helsley2008-10-201-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements a new freezer subsystem in the control groups framework. It provides a way to stop and resume execution of all tasks in a cgroup by writing in the cgroup filesystem. The freezer subsystem in the container filesystem defines a file named freezer.state. Writing "FROZEN" to the state file will freeze all tasks in the cgroup. Subsequently writing "RUNNING" will unfreeze the tasks in the cgroup. Reading will return the current state. * 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 is the basic mechanism which should do the right thing for user space task in a simple scenario. It's important to note that freezing can be incomplete. In that case we return EBUSY. This means that some tasks in the cgroup are busy doing something that prevents us from completely freezing the cgroup at this time. After EBUSY, the cgroup will remain partially frozen -- reflected by freezer.state reporting "FREEZING" when read. The state will remain "FREEZING" until one of these things happens: 1) Userspace cancels the freezing operation by writing "RUNNING" to the freezer.state file 2) Userspace retries the freezing operation by writing "FROZEN" to the freezer.state file (writing "FREEZING" is not legal and returns EIO) 3) The tasks that blocked the cgroup from entering the "FROZEN" state disappear from the cgroup's set of tasks. [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: export thaw_process] Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Signed-off-by: Matt Helsley <matthltc@us.ibm.com> Acked-by: Serge E. Hallyn <serue@us.ibm.com> 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>
* container freezer: add TIF_FREEZE flag to all architecturesMatt Helsley2008-10-201-0/+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>
* [PATCH] remove unused ibcs2/PER_SVR4 in SET_PERSONALITYMartin Schwidefsky2008-10-161-1/+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>
* Remove asm/a.out.h files for all architectures without a.out support.Adrian Bunk2008-09-063-3/+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>
* Remove redundant CONFIG_ARCH_SUPPORTS_AOUTDavid Woodhouse2008-09-061-3/+0
| | | | | | We don't need this any more; arguably we never really did. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* m68k{,nommu}: Wire up new system callsGeert Uytterhoeven2008-08-112-1/+13
| | | | | | | | | | | | | | | | | | Wire up for m68k{,nommu} the system calls that were added in the last merge window: - 4006553b06306b34054529477b06b68a1c66249b ("flag parameters: inotify_init") - ed8cae8ba01348bfd83333f4648dd807b04d7f08 ("flag parameters: pipe") - 336dd1f70ff62d7dd8655228caed4c5bfc818c56 ("flag parameters: dup2") - a0998b50c3f0b8fdd265c63e0032f86ebe377dbf ("flag parameters: epoll_create") - 9fe5ad9c8cef9ad5873d8ee55d1cf00d9b607df0 ("flag parameters add-on: remove epoll_create size param") - b087498eb5605673b0f260a7620d91818cd72304 ("flag parameters: eventfd") - 9deb27baedb79759c3ab9435a7d8b841842d56e9 ("flag parameters: signalfd") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Move all of include/asm-m68knommu to arch/m68knommu/include/asm.Greg Ungerer2008-08-07139-0/+15825
| | | | | | | With the current kbuild infrastructure in place no other changes are required for this to work. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
* m68knommu: use generic show_mem()Johannes Weiner2008-07-261-27/+0
| | | | | | | | | | | | | | | | | Remove arch-specific show_mem() in favor of the generic version. This also removes the following redundant information display: - free pages, printed by show_free_areas() - pages in swapcache, printed by show_swap_cache_info() where show_mem() calls show_free_areas(), which calls show_swap_cache_info(). Signed-off-by: Johannes Weiner <hannes@saeurebad.de> Acked-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2008-07-2414-44/+3196
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68knommu: put ColdFire head code into .text.head section m68knommu: remove last use of CONFIG_FADS and CONFIG_RPXCLASSIC m68knommu: remove RPXCLASSIC from the m68k tree m68knommu: fec: remove FADS m68knommu: MCF5307 PIT GENERIC_CLOCKEVENTS support m68knommu: add read_barrier_depends() and irqs_disabled_flags() m68knommu: add byteswap assembly opcode for ISA A+ m68knommu: add ffs and __ffs plattform which support ISA A+ or ISA C m68knommu: add sched_clock() for the DMA timer m68knommu: complete generic time m68knommu: move code within time.c m68knommu: m68knommu: add old stack trace method m68knommu: Add Coldfire DMA Timer support m68knommu: defconfig for M5407C3 board m68knommu: defconfig for M5307C3 board m68knommu: defconfig for M5275EVB board m68knommu: defconfig for M5249EVB board m68knommu: change to a configs directory for board configurations
| * m68knommu: put ColdFire head code into .text.head sectionGreg Ungerer2008-07-232-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Switch the ColdFire head start up code to be in the .text.head segment. And make sure that segment is at the start of the final linked text segment. Fixes the linker warnings about section use mis-matches: WARNING: vmlinux.o(.text+0xa8): Section mismatch in reference from the variable _clear_bss to the function .init.text:start_kernel() The function _clear_bss() references the function __init start_kernel(). This is often because _clear_bss lacks a __init annotation or the annotation of start_kernel is wrong. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| * m68knommu: MCF5307 PIT GENERIC_CLOCKEVENTS supportSebastian Siewior2008-07-233-13/+91
| | | | | | | | | | | | | | | | | | | | | | | | | | The PIT code has been changed in order to suppport GENERIC_CLOCKEVENTS. The priority of the PIT clocksource has been decreased in favor of the DMA timer. pit_cycles_per_jiffy become a constant (PIT_CYCLES_PER_JIFFY) because it is known at compile time and does not change afterwards. Signed-off-by: Benedikt Spranger <b.spranger@linutronix.de> Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| * m68knommu: add ffs and __ffs plattform which support ISA A+ or ISA CSebastian Siewior2008-07-231-4/+7
| | | | | | | | | | | | | | | | | | | | the ff1 and bitrev opcode appears in ISA C and ISA A+ what isn't supported by all plattforms. The assembly optimization is automaticly enabled if the compiler understand the required cpu keyword. My m5235 seems to boot and run fine so far. Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| * m68knommu: add sched_clock() for the DMA timerSebastian Siewior2008-07-231-0/+16
| | | | | | | | | | | | | | | | with this printk() and other sched_clock() user use the more precise timestamps. The highly optimized math is from arch/x86/kernel/tsc_32.c. Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| * m68knommu: complete generic timeSebastian Siewior2008-07-232-28/+14
| | | | | | | | | | | | | | | | | | | | do_set_rtc() isn't required because the work that is handled is allready served if read_persistent_clock() & update_persistent_clock() are implemented and CONFIG_GENERIC_CMOS_UPDATE is. sync_cmos_clock() looks very familiar :) Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 17:55:24 +0100