Eric Lee / smarc-fsl-linux-kernel

25 Sep, 2009

1 commit

24 Sep, 2009

3 commits

  • 94a8d5cab   Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus ... Browse Code »

    * git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: (39 commits)
    cpumask: Move deprecated functions to end of header.
    cpumask: remove unused deprecated functions, avoid accusations of insanity
    cpumask: use new-style cpumask ops in mm/quicklist.
    cpumask: use mm_cpumask() wrapper: x86
    cpumask: use mm_cpumask() wrapper: um
    cpumask: use mm_cpumask() wrapper: mips
    cpumask: use mm_cpumask() wrapper: mn10300
    cpumask: use mm_cpumask() wrapper: m32r
    cpumask: use mm_cpumask() wrapper: arm
    cpumask: Use accessors for cpu_*_mask: um
    cpumask: Use accessors for cpu_*_mask: powerpc
    cpumask: Use accessors for cpu_*_mask: mips
    cpumask: Use accessors for cpu_*_mask: m32r
    cpumask: remove arch_send_call_function_ipi
    cpumask: arch_send_call_function_ipi_mask: s390
    cpumask: arch_send_call_function_ipi_mask: powerpc
    cpumask: arch_send_call_function_ipi_mask: mips
    cpumask: arch_send_call_function_ipi_mask: m32r
    cpumask: arch_send_call_function_ipi_mask: alpha
    cpumask: remove obsolete topology_core_siblings and topology_thread_siblings: ia64
    ...

    Linus Torvalds
     
  • a6a01063d   cpumask: Use accessors for cpu_*_mask: um ... Browse Code »

    Use the accessors rather than frobbing bits directly (the new versions
    are const).

    Signed-off-by: Rusty Russell
    Signed-off-by: Mike Travis

    Rusty Russell
     
  • c37efa932   Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next ... Browse Code »

    * git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next: (30 commits)
    Use macros for .data.page_aligned section.
    Use macros for .bss.page_aligned section.
    Use new __init_task_data macro in arch init_task.c files.
    kbuild: Don't define ALIGN and ENTRY when preprocessing linker scripts.
    arm, cris, mips, sparc, powerpc, um, xtensa: fix build with bash 4.0
    kbuild: add static to prototypes
    kbuild: fail build if recordmcount.pl fails
    kbuild: set -fconserve-stack option for gcc 4.5
    kbuild: echo the record_mcount command
    gconfig: disable "typeahead find" search in treeviews
    kbuild: fix cc1 options check to ensure we do not use -fPIC when compiling
    checkincludes.pl: add option to remove duplicates in place
    markup_oops: use modinfo to avoid confusion with underscored module names
    checkincludes.pl: provide usage helper
    checkincludes.pl: close file as soon as we're done with it
    ctags: usability fix
    kernel hacking: move STRIP_ASM_SYMS from General
    gitignore usr/initramfs_data.cpio.bz2 and usr/initramfs_data.cpio.lzma
    kbuild: Check if linker supports the -X option
    kbuild: introduce ld-option
    ...

    Fix trivial conflict in scripts/basic/fixdep.c

    Linus Torvalds
     

22 Sep, 2009

2 commits

  • 4d04c7075   uml: fix order of pud and pmd_free() ... Browse Code »

    If pmd_alloc() fails we should only free the prior allocated pud, if
    pte_alloc_map() fails, we should free pmd as well.

    Signed-off-by: Roel Kluin
    Cc: Jeff Dike
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Roel Kluin
     
  • cc013a889   arches: drop superfluous casts in nr_free_pages() callers ... Browse Code »

    Commit 96177299416dbccb73b54e6b344260154a445375 ("Drop free_pages()")
    modified nr_free_pages() to return 'unsigned long' instead of 'unsigned
    int'. This made the casts to 'unsigned long' in most callers superfluous,
    so remove them.

    [akpm@linux-foundation.org: coding-style fixes]
    Signed-off-by: Geert Uytterhoeven
    Reviewed-by: Christoph Lameter
    Acked-by: Ingo Molnar
    Acked-by: Russell King
    Acked-by: David S. Miller
    Acked-by: Kyle McMartin
    Acked-by: WANG Cong
    Cc: Richard Henderson
    Cc: Ivan Kokshaysky
    Cc: Haavard Skinnemoen
    Cc: Mikael Starvik
    Cc: "Luck, Tony"
    Cc: Hirokazu Takata
    Cc: Ralf Baechle
    Cc: David Howells
    Acked-by: Benjamin Herrenschmidt
    Cc: Martin Schwidefsky
    Cc: Paul Mundt
    Cc: Chris Zankel
    Cc: Michal Simek
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Geert Uytterhoeven
     

21 Sep, 2009

1 commit

20 Sep, 2009

1 commit

  • 51b563fc9   arm, cris, mips, sparc, powerpc, um, xtensa: fix build with bash 4.0 ... Browse Code »

    Albin Tonnerre reported:

    Bash 4 filters out variables which contain a dot in them.
    This happends to be the case of CPPFLAGS_vmlinux.lds.
    This is rather unfortunate, as it now causes
    build failures when using SHELL=/bin/bash to compile,
    or when bash happens to be used by make (eg when it's /bin/sh)

    Remove the common definition of CPPFLAGS_vmlinux.lds by
    pushing relevant stuff to either Makefile.build or the
    arch specific kernel/Makefile where we build the linker script.

    This is also nice cleanup as we move the information out where
    it is used.

    Notes for the different architectures touched:

    arm - we use an already exported symbol
    cris - we use a config symbol aleady available
    [Not build tested]
    mips - the jiffies complexity has moved to vmlinux.lds.S where we need it.
    Added a few variables to CPPFLAGS - they are only used by
    the linker script.
    [Not build tested]
    powerpc - removed assignment that is not needed
    [not build tested]
    sparc - simplified it using $(BITS)
    um - introduced a few new exported variables to deal with this
    xtensa - added options to CPP invocation
    [not build tested]

    Cc: Albin Tonnerre
    Cc: Russell King
    Cc: Mikael Starvik
    Cc: Jesper Nilsson
    Cc: Benjamin Herrenschmidt
    Cc: Paul Mackerras
    Cc: "David S. Miller"
    Cc: Jeff Dike
    Cc: Chris Zankel
    Signed-off-by: Sam Ravnborg

    Sam Ravnborg
     

14 Aug, 2009

1 commit

  • 384be2b18   Merge branch 'percpu-for-linus' into percpu-for-next ... Browse Code »

    Conflicts:
    arch/sparc/kernel/smp_64.c
    arch/x86/kernel/cpu/perf_counter.c
    arch/x86/kernel/setup_percpu.c
    drivers/cpufreq/cpufreq_ondemand.c
    mm/percpu.c

    Conflicts in core and arch percpu codes are mostly from commit
    ed78e1e078dd44249f88b1dd8c76dafb39567161 which substituted many
    num_possible_cpus() with nr_cpu_ids. As for-next branch has moved all
    the first chunk allocators into mm/percpu.c, the changes are moved
    from arch code to mm/percpu.c.

    Signed-off-by: Tejun Heo

    Tejun Heo
     

09 Jul, 2009

2 commits

  • 023bf6f1b   linker script: unify usage of discard definition ... Browse Code »

    Discarded sections in different archs share some commonality but have
    considerable differences. This led to linker script for each arch
    implementing its own /DISCARD/ definition, which makes maintaining
    tedious and adding new entries error-prone.

    This patch makes all linker scripts to move discard definitions to the
    end of the linker script and use the common DISCARDS macro. As ld
    uses the first matching section definition, archs can include default
    discarded sections by including them earlier in the linker script.

    ia64 is notable because it first throws away some ia64 specific
    subsections and then include the rest of the sections into the final
    image, so those sections must be discarded before the inclusion.

    defconfig compile tested for x86, x86-64, powerpc, powerpc64, ia64,
    alpha, sparc, sparc64 and s390. Michal Simek tested microblaze.

    Signed-off-by: Tejun Heo
    Acked-by: Paul Mundt
    Acked-by: Mike Frysinger
    Tested-by: Michal Simek
    Cc: linux-arch@vger.kernel.org
    Cc: Michal Simek
    Cc: microblaze-uclinux@itee.uq.edu.au
    Cc: Sam Ravnborg
    Cc: Tony Luck

    Tejun Heo
     
  • ad361c988   Remove multiple KERN_ prefixes from printk formats ... Browse Code »

    Commit 5fd29d6ccbc98884569d6f3105aeca70858b3e0f ("printk: clean up
    handling of log-levels and newlines") changed printk semantics. printk
    lines with multiple KERN_ prefixes are no longer emitted as
    before the patch.

    is now included in the output on each additional use.

    Remove all uses of multiple KERN_s in formats.

    Signed-off-by: Joe Perches
    Signed-off-by: Linus Torvalds

    Joe Perches
     

24 Jun, 2009

1 commit

  • 405d967dc   linker script: throw away .discard section ... Browse Code »

    x86 throws away .discard section but no other archs do. Also,
    .discard is not thrown away while linking modules. Make every arch
    and module linking throw it away. This will be used to define dummy
    variables for percpu declarations and definitions.

    This patch is based on Ivan Kokshaysky's alpha percpu patch.

    [ Impact: always throw away everything in .discard ]

    Signed-off-by: Tejun Heo
    Cc: Ivan Kokshaysky
    Cc: Richard Henderson
    Cc: Russell King
    Cc: Haavard Skinnemoen
    Cc: Bryan Wu
    Cc: Mikael Starvik
    Cc: Jesper Nilsson
    Cc: David Howells
    Cc: Yoshinori Sato
    Cc: Tony Luck
    Cc: Hirokazu Takata
    Cc: Geert Uytterhoeven
    Cc: Michal Simek
    Cc: Ralf Baechle
    Cc: Kyle McMartin
    Cc: Benjamin Herrenschmidt
    Cc: Paul Mackerras
    Cc: Martin Schwidefsky
    Cc: Heiko Carstens
    Cc: Paul Mundt
    Cc: David S. Miller
    Cc: Jeff Dike
    Cc: Chris Zankel
    Cc: Rusty Russell
    Cc: Ingo Molnar

    Tejun Heo
     

22 Jun, 2009

1 commit

  • d06063cc2   Move FAULT_FLAG_xyz into handle_mm_fault() callers ... Browse Code »

    This allows the callers to now pass down the full set of FAULT_FLAG_xyz
    flags to handle_mm_fault(). All callers have been (mechanically)
    converted to the new calling convention, there's almost certainly room
    for architectures to clean up their code and then add FAULT_FLAG_RETRY
    when that support is added.

    Signed-off-by: Linus Torvalds

    Linus Torvalds
     

17 Jun, 2009

2 commits

  • 6fa851c3e   um: remove obsolete hw_interrupt_type ... Browse Code »

    The defines and typedefs (hw_interrupt_type, no_irq_type, irq_desc_t) have
    been kept around for migration reasons. After more than two years it's
    time to remove them finally.

    This patch cleans up one of the remaining users. When all such patches
    hit mainline we can remove the defines and typedefs finally.

    Impact: cleanup

    Convert the last remaining users to struct irq_chip and remove the
    define.

    Signed-off-by: Thomas Gleixner
    Cc: Jeff Dike
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Thomas Gleixner
     
  • bb1f17b03   mm: consolidate init_mm definition ... Browse Code »

    * create mm/init-mm.c, move init_mm there
    * remove INIT_MM, initialize init_mm with C99 initializer
    * unexport init_mm on all arches:

    init_mm is already unexported on x86.

    One strange place is some OMAP driver (drivers/video/omap/) which
    won't build modular, but it's already wants get_vm_area() export.
    Somebody should look there.

    [akpm@linux-foundation.org: add missing #includes]
    Signed-off-by: Alexey Dobriyan
    Cc: Mike Frysinger
    Cc: Americo Wang
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexey Dobriyan
     

22 Apr, 2009

1 commit

  • 8e19608e8   clocksource: pass clocksource to read() callback ... Browse Code »

    Pass clocksource pointer to the read() callback for clocksources. This
    allows us to share the callback between multiple instances.

    [hugh@veritas.com: fix powerpc build of clocksource pass clocksource mods]
    [akpm@linux-foundation.org: cleanup]
    Signed-off-by: Magnus Damm
    Acked-by: John Stultz
    Cc: Thomas Gleixner
    Signed-off-by: Hugh Dickins
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Magnus Damm
     

03 Apr, 2009

2 commits

  • 6f2c55b84   Simplify copy_thread() ... Browse Code »

    First argument unused since 2.3.11.

    [akpm@linux-foundation.org: coding-style fixes]
    Signed-off-by: Alexey Dobriyan
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexey Dobriyan
     
  • e4c2ff1cf   uml: fix warnings in kernel_execve ... Browse Code »

    Fix the following warnings:

    arch/um/kernel/syscall.c: In function 'kernel_execve':
    arch/um/kernel/syscall.c:130: warning: passing argument 1 of 'um_execve' discards qualifiers from pointer target type
    arch/um/kernel/syscall.c:130: warning: passing argument 2 of 'um_execve' discards qualifiers from pointer target type
    arch/um/kernel/syscall.c:130: warning: passing argument 3 of 'um_execve' discards qualifiers from pointer target type

    Signed-off-by: Miklos Szeredi
    Cc: Jeff Dike
    Cc: WANG Cong
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Miklos Szeredi
     

01 Apr, 2009

2 commits

16 Mar, 2009

1 commit

13 Mar, 2009

1 commit

  • 86d6f2bf6   UML on UML fixed: it did not start ... Browse Code »

    It is currently impossible to run a user-mode linux machine inside another
    user-mode linux (UML on UML). It breaks after a few instructions. When
    it tries to check whether SYSEMU is installed (the inner) UML receives an
    inconsistent result (from the outer UML).

    This is the output of a broken attempt:
    $ ./linux mem=256m ubd0=cow
    Locating the bottom of the address space ... 0x0
    Locating the top of the address space ... 0xc0000000
    Core dump limits :
    soft - 0
    hard - NONE
    Checking that ptrace can change system call numbers...OK
    Checking ptrace new tags for syscall emulation...unsupported
    Checking syscall emulation patch for ptrace...check_sysemu : expected SIGTRAP, got status = 256
    $

    The problem is the following:

    PTRACE_SYSCALL/SINGLESTEP is currently managed inside arch_ptrace for ARCH=um.

    PTRACE_SYSEMU/SUSEMU_SINGLESTEP is not captured in arch_ptrace's switch,
    therefore it is erroneously passed back to ptrace_request (in
    kernel/ptrace).

    This simple patch simply forces ptrace to return an error on
    PTRACE_SYSEMU/SUSEMU_SINGLESTEP as it is unsupported on ARCH=um, and fixes
    the problem.

    [akpm@linux-foundation.org: coding-style fixes]
    Signed-off-by: Renzo Davoli
    Reviewed-by: WANG Cong
    Cc: Jeff Dike
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Renzo Davoli
     

11 Jan, 2009

1 commit

  • dee4102a9   sparseirq: use kstat_irqs_cpu instead ... Browse Code »

    Impact: build fix

    Ingo Molnar wrote:

    > tip/arch/blackfin/kernel/irqchip.c: In function 'show_interrupts':
    > tip/arch/blackfin/kernel/irqchip.c:85: error: 'struct kernel_stat' has no member named 'irqs'
    > make[2]: *** [arch/blackfin/kernel/irqchip.o] Error 1
    > make[2]: *** Waiting for unfinished jobs....
    >

    So could move kstat_irqs array to irq_desc struct.

    (s390, m68k, sparc) are not touched yet, because they don't support genirq

    Signed-off-by: Yinghai Lu
    Signed-off-by: Ingo Molnar

    Yinghai Lu
     

07 Jan, 2009

1 commit

  • 1c0fe6e3b   mm: invoke oom-killer from page fault ... Browse Code »

    Rather than have the pagefault handler kill a process directly if it gets
    a VM_FAULT_OOM, have it call into the OOM killer.

    With increasingly sophisticated oom behaviour (cpusets, memory cgroups,
    oom killing throttling, oom priority adjustment or selective disabling,
    panic on oom, etc), it's silly to unconditionally kill the faulting
    process at page fault time. Create a hook for pagefault oom path to call
    into instead.

    Only converted x86 and uml so far.

    [akpm@linux-foundation.org: make __out_of_memory() static]
    [akpm@linux-foundation.org: fix comment]
    Signed-off-by: Nick Piggin
    Cc: Jeff Dike
    Acked-by: Ingo Molnar
    Cc: Thomas Gleixner
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Nick Piggin
     

03 Jan, 2009

1 commit

  • b840d7963   Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel… ... Browse Code »

    …/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

    Linus Torvalds
     

01 Jan, 2009

1 commit

13 Dec, 2008

2 commits

  • 320ab2b0b   cpumask: convert struct clock_event_device to cpumask pointers. ... Browse Code »

    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
    Cc: Ingo Molnar

    Rusty Russell
     
  • 98a79d6a5   cpumask: centralize cpu_online_map and cpu_possible_map ... Browse Code »

    Impact: cleanup

    Each SMP arch defines these themselves. Move them to a central
    location.

    Twists:
    1) Some archs (m32, parisc, s390) set possible_map to all 1, so we add a
    CONFIG_INIT_ALL_POSSIBLE for this rather than break them.

    2) mips and sparc32 '#define cpu_possible_map phys_cpu_present_map'.
    Those archs simply have phys_cpu_present_map replaced everywhere.

    3) Alpha defined cpu_possible_map to cpu_present_map; this is tricky
    so I just manipulate them both in sync.

    4) IA64, cris and m32r have gratuitous 'extern cpumask_t cpu_possible_map'
    declarations.

    Signed-off-by: Rusty Russell
    Reviewed-by: Grant Grundler
    Tested-by: Tony Luck
    Acked-by: Ingo Molnar
    Cc: Mike Travis
    Cc: ink@jurassic.park.msu.ru
    Cc: rmk@arm.linux.org.uk
    Cc: starvik@axis.com
    Cc: tony.luck@intel.com
    Cc: takata@linux-m32r.org
    Cc: ralf@linux-mips.org
    Cc: grundler@parisc-linux.org
    Cc: paulus@samba.org
    Cc: schwidefsky@de.ibm.com
    Cc: lethal@linux-sh.org
    Cc: wli@holomorphy.com
    Cc: davem@davemloft.net
    Cc: jdike@addtoit.com
    Cc: mingo@redhat.com

    Rusty Russell
     

23 Oct, 2008

2 commits

17 Oct, 2008

1 commit

09 Sep, 2008

1 commit

  • e545a6140   kernel/cpu.c: create a CPU_STARTING cpu_chain notifier ... Browse Code »

    Right now, there is no notifier that is called on a new cpu, before the new
    cpu begins processing interrupts/softirqs.
    Various kernel function would need that notification, e.g. kvm works around
    by calling smp_call_function_single(), rcu polls cpu_online_map.

    The patch adds a CPU_STARTING notification. It also adds a helper function
    that sends the message to all cpu_chain handlers.

    Tested on x86-64.
    All other archs are untested. Especially on sparc, I'm not sure if I got
    it right.

    Signed-off-by: Manfred Spraul
    Signed-off-by: Ingo Molnar

    Manfred Spraul
     

27 Jul, 2008

1 commit

  • 79b0cbd11   um: use generic show_mem() ... Browse Code »

    Remove arch-specific show_mem() in favor of the generic version.

    This also removes the following redundant information display:

    - free swap pages, printed by show_swap_cache_info()
    - 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
    Acked-by: Jeff Dike
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Johannes Weiner
     

25 Jul, 2008

4 commits

19 Jul, 2008

2 commits

  • 9b610fda0   Merge branch 'linus' into timers/nohz Browse Code »
    Ingo Molnar
     
  • b8f8c3cf0   nohz: prevent tick stop outside of the idle loop ... Browse Code »

    Jack Ren and Eric Miao tracked down the following long standing
    problem in the NOHZ code:

    scheduler switch to idle task
    enable interrupts

    Window starts here

    ----> interrupt happens (does not set NEED_RESCHED)
    irq_exit() stops the tick

    ----> interrupt happens (does set NEED_RESCHED)

    return from schedule()

    cpu_idle(): preempt_disable();

    Window ends here

    The interrupts can happen at any point inside the race window. The
    first interrupt stops the tick, the second one causes the scheduler to
    rerun and switch away from idle again and we end up with the tick
    disabled.

    The fact that it needs two interrupts where the first one does not set
    NEED_RESCHED and the second one does made the bug obscure and extremly
    hard to reproduce and analyse. Kudos to Jack and Eric.

    Solution: Limit the NOHZ functionality to the idle loop to make sure
    that we can not run into such a situation ever again.

    cpu_idle()
    {
    preempt_disable();

    while(1) {
    tick_nohz_stop_sched_tick(1); ,
    Debugged-by: eric miao
    Signed-off-by: Thomas Gleixner

    Thomas Gleixner
     

26 Jun, 2008

1 commit