1. 25 May, 2012 6 commits
  2. 22 May, 2012 1 commit
  3. 21 May, 2012 33 commits
    • Linus Torvalds's avatar
      Fix blocking allocations called very early during bootup · 31a67102
      Linus Torvalds authored
      During early boot, when the scheduler hasn't really been fully set up,
      we really can't do blocking allocations because with certain (dubious)
      configurations the "might_resched()" calls can actually result in
      scheduling events.
      
      We could just make such users always use GFP_ATOMIC, but quite often the
      code that does the allocation isn't really aware of the fact that the
      scheduler isn't up yet, and forcing that kind of random knowledge on the
      initialization code is just annoying and not good for anybody.
      
      And we actually have a the 'gfp_allowed_mask' exactly for this reason:
      it's just that the kernel init sequence happens to set it to allow
      blocking allocations much too early.
      
      So move the 'gfp_allowed_mask' initialization from 'start_kernel()'
      (which is some of the earliest init code, and runs with preemption
      disabled for good reasons) into 'kernel_init()'.  kernel_init() is run
      in the newly created thread that will become the 'init' process, as
      opposed to the early startup code that runs within the context of what
      will be the first idle thread.
      
      So by the time we reach 'kernel_init()', we know that the scheduler must
      be at least limping along, because we've already scheduled from the idle
      thread into the init thread.
      Reported-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      Cc: David Rientjes <rientjes@google.com>
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      31a67102
    • Sam Ravnborg's avatar
      net: drop NET dependency from HAVE_BPF_JIT · e47b65b0
      Sam Ravnborg authored
      There is no point having the NET dependency on the select target, as it
      forces all users to depend on NET to tell they support BPF_JIT.  Move
      the config option to the bottom of the file - this could be a nice place
      also for future "selectable" config symbols.
      
      Fix up all users to drop the dependency on NET now that it is not
      required to supress warnings for non-NET builds.
      Reported-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
      Acked-by: default avatarDavid Miller <davem@davemloft.net>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      e47b65b0
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lliubbo/blackfin · 8e95a53b
      Linus Torvalds authored
      Pull blackfin changes from Bob Liu:
       "The biggest change was added an new processor(bf60x series).
      
        Bf60x series processor of blackfin can up to 1GHz with Hardware
        Support for HD Video Analytics, it use the same blackfin ISA but with
        some changes on system buses, interrupt controller and peripheral
        devices.
      
        Added dir arch/blackfin/mach-bf609/ and did some changes to the
        framework made linux working fine on the reference board bf609-ezkit
        now."
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lliubbo/blackfin: (41 commits)
        blackfin: fix build after add bf60x mach/pm.h
        blackfin: twi: include linux/i2c.h
        blackfin: bf60x: add head file for crc controller
        blackfin: bf60x: twi: work around temporary anomaly 0501001
        blackfin: twi: Move TWI MMR access macro to twi head file
        blackfin: twi: Move TWI peripheral pin request array to platform data
        blackfin: bf60x: anomaly: Add a temporary anomaly 0501001
        blackfin: bf60x: Rename the DDR controller macro
        blackfin: mach-bf609: pm: cleanup bfin_deepsleep
        blackfin: bf60x: cleanup get clock code
        blackfin: bf60x: pm: Add a debug option to calculate kernel wakeup time.
        blackfin: bf60x: add wakeup source select
        blackfin: bf60x: make clock changeable in kernel menuconfig
        blackfin:mach-bf609: fix norflash for bf609-ezkit
        blackfin: mach-bf609: add can_wakeup to ethernet device
        blackfin: remove redundant CONFIG_BF60x macro
        blackfin: rotary: Add pm_wakeup flag to platform data structure.
        bfin_gpio: fix bf548-ezkit kernel fail to boot
        bfin_dma: fix initcall return error in proc_dma_init()
        Blackfin: delete fork func
        ...
      8e95a53b
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming · cd975ae0
      Linus Torvalds authored
      Pull c6x updates from Mark Salter:
       "Clean up some c6x Kconfig items and add support for Elf FDPIC loader."
      
      * tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming:
        C6X: remove unused config items
        C6X: add support to build with BINFMT_ELF_FDPIC
        C6X: change main arch kbuild symbol
      cd975ae0
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k · 881bcabb
      Linus Torvalds authored
      Pull m68k updates from Geert Uytterhoeven.
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
        m68k: Setup CROSS_COMPILE at the top
        m68k: Correct the Atari ALLOWINT definition
        m68k/video: Create <asm/vga.h>
        m68k: Make sure {read,write}s[bwl]() are always defined
        m68k/mm: Port OOM changes to do_page_fault()
        scsi/atari: Make more functions static
        scsi/atari: Revive "atascsi=" setup option
        net/ariadne: Improve debug prints
        m68k/atari: Change VME irq numbers from unsigned long to unsigned int
        m68k/amiga: Use arch_initcall() for registering platform devices
        m68k/amiga: Add error checks when registering platform devices
        m68k/amiga: Mark z_dev_present() __init
        m68k: Remove unused MAX_NOINT_IPL definition
      881bcabb
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux · e60b9a03
      Linus Torvalds authored
      Pull s390 updates from Martin Schwidefsky:
       "Just a random collection of bug-fixes and cleanups, nothing new in
        this merge request."
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (46 commits)
        s390/ap: Fix wrong or missing comments
        s390/ap: move receive callback to message struct
        s390/dasd: re-prioritize partition detection message
        s390/qeth: reshuffle initialization
        s390/qeth: cleanup drv attr usage
        s390/claw: cleanup drv attr usage
        s390/lcs: cleanup drv attr usage
        s390/ctc: cleanup drv attr usage
        s390/ccwgroup: remove ccwgroup_create_from_string
        s390/qeth: stop using struct ccwgroup driver for discipline callbacks
        s390/qeth: switch to ccwgroup_create_dev
        s390/claw: switch to ccwgroup_create_dev
        s390/lcs: switch to ccwgroup_create_dev
        s390/ctcm: switch to ccwgroup_create_dev
        s390/ccwgroup: exploit ccwdev_by_dev_id
        s390/ccwgroup: introduce ccwgroup_create_dev
        s390: fix race on TIF_MCCK_PENDING
        s390/barrier: make use of fast-bcr facility
        s390/barrier: cleanup barrier functions
        s390/claw: remove "eieio" calls
        ...
      e60b9a03
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next · 9daeaa37
      Linus Torvalds authored
      Pull sparc updates from David Miller:
      
      1) Kill off support for sun4c and Cypress sun4m chips.
      
         And as a result we were able to also kill off that ugly btfixup thing
         that required multi-stage links of the final vmlinux image in the
         Kbuild system.  This should make the kbuild maintainers really happy.
      
         Thanks a lot to Sam Ravnborg for his tireless efforts to get this
         going.
      
      2) Convert sparc64 to nobootmem.  I suspect now with sparc32 being a lot
         cleaner, it should be able to fall in line and modernize in this area
         too.
      
      3) Make sparc32 use generic clockevents, from Tkhai Kirill.
      
      [ I fixed up the BPF rules, and tried to clean up the build rules too.
        But I don't have - or want - a sparc cross-build environment, so the
        BPF rule bug and the related build cleanup was all done with just a
        bare "make -n" pseudo-test.      - Linus ]
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next: (110 commits)
        sparc32: use flushi when run-time patching in per_cpu_patch
        sparc32: fix cpuid_patch run-time patching
        sparc32: drop unused inline functions in srmmu.c
        sparc32: drop unused functions in pgtsrmmu.h
        sparc32,leon: move leon mmu functions to leon_mm.c
        sparc32,leon: remove duplicate definitions in leon.h
        sparc32,leon: remove duplicate UART register definitions
        sparc32,leon: move leon ASI definitions to asi.h
        sparc32: move trap table to a separate file
        sparc64: renamed ttable.S to ttable_64.S
        sparc32: Remove asm/sysen.h header.
        sparc32: Delete asm/smpprim.h
        sparc32: Remove unused empty_bad_page{,_table} declarations.
        sparc32: Kill boot_cpu_id4
        sparc32: Move GET_PROCESSOR*_ID() out of asm/asmmacro.h
        sparc32: Remove completely unused code from asm/cache.h
        sparc32: Add ucmpdi2.o to obj-y instead of lib-y.
        sparc32: add ucmpdi2
        sparc: introduce arch/sparc/Kbuild
        sparc: remove obsolete documentation
        ...
      9daeaa37
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next · cb62ab71
      Linus Torvalds authored
      Pull networking changes from David Miller:
      
       1) Get rid of the error prone NLA_PUT*() macros that used an embedded
          goto.
      
       2) Kill off the token-ring and MCA networking drivers, from Paul
          Gortmaker.
      
       3) Reduce high-order allocations made by datagram AF_UNIX sockets, from
          Eric Dumazet.
      
       4) Add PTP hardware clock support to IGB and IXGBE, from Richard
          Cochran and Jacob Keller.
      
       5) Allow users to query timestamping capabilities of a card via
          ethtool, from Richard Cochran.
      
       6) Add loadbalance mode to the teaming driver, from Jiri Pirko.  Part
          of this is that we can now have BPF filters not attached to sockets,
          and the loadbalancing function is calculated using one.
      
       7) Francois Romieu went through the network drivers removing gratuitous
          uses of netdev->base_addr, perhaps some day we can remove it
          completely but it's used for ISA probing still.
      
       8) Add a BPF JIT for sparc.  I know, who cares, right? :-)
      
       9) Move networking sysctl registry away from using the compatability
          mode interfaces in the sysctl code.  From Eric W Biederman.
      
      10) Pavel Emelyanov added a way to save and restore TCP socket state via
          TCP_REPAIR, TCP_REPAIR_QUEUE, and TCP_QUEUE_SEQ socket options as
          well as a way to forcefully bind a socket to a port via the
          sk->sk_reuse value SK_FORCE_REUSE.  There is also a
          TCP_REPAIR_OPTIONS which allows to reinstante the TCP options
          enabled on the connection.
      
      11) Several enhancements from Eric Dumazet that, in particular, can
          enhance splice performance on TCP sockets significantly.
      
           a) Reset the offset of the per-socket sendmsg page when we know
              we're the only use of the page in linear_to_page().
      
           b) Add facilities such that skb->data can be backed a page rather
              than SLAB kmalloc'd memory.  In particular devices which were
              receiving into linear RX buffers can now end up providing paged
              data.
      
          The big result is that code like splice and GRO do not have to copy
          any more.
      
      12) Allow a pure sender to more gracefully handle ACK backlogs in TCP.
          What can happen at high rates is that the sender hasn't grown his
          receive buffer limits at all (he's not receiving data so really
          doesn't need to), but the non-data ACKs consume receive buffer
          space.
      
          sk_add_backlog() is too aggressive in dropping frames in this case,
          so relax it's requirements by using the receive buffer plus the send
          buffer limit as the backlog limit instead of just the former.
      
          Also from Eric Dumazet.
      
      13) Add ipv6 support to L2TP, from Benjamin LaHaise, James Chapman, and
          Chris Elston.
      
      14) Implement TCP early retransmit (RFC 5827), from Yuchung Cheng.
          Basically, we can start fast retransmit before hiting the dupack
          threshold under certain conditions.
      
      15) New CODEL active queue management packet scheduler, from Eric
          Dumazet based upon initial work by Dave Taht.
      
          Basically, the big feature is that packets are dropped (or ECN bits
          are set) based upon how long packets live in the queue, rather than
          the queue length (which is what RED uses).
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1341 commits)
        drivers/net/stmmac: seq_file fix memory leak
        ipv6/exthdrs: strict Pad1 and PadN check
        USB: qmi_wwan: Add ZTE (Vodafone) K3520-Z
        USB: qmi_wwan: Add ZTE (Vodafone) K3765-Z
        USB: qmi_wwan: Make forced int 4 whitelist generic
        net/ipv4: replace simple_strtoul with kstrtoul
        net/ipv4/ipconfig: neaten __setup placement
        net: qmi_wwan: Add Vodafone/Huawei K5005 support
        net: cdc_ether: Add ZTE WWAN matches before generic Ethernet
        ipv6: use skb coalescing in reassembly
        ipv4: use skb coalescing in defragmentation
        net: introduce skb_try_coalesce()
        net:ipv6:fixed space issues relating to operators.
        net:ipv6:fixed a trailing white space issue.
        ipv6: disable GSO on sockets hitting dst_allfrag
        tg3: use netdev_alloc_frag() API
        net: napi_frags_skb() is static
        ppp: avoid false drop_monitor false positives
        ipv6: bool/const conversions phase2
        ipx: Remove spurious NULL checking in ipx_ioctl().
        ...
      cb62ab71
    • Linus Torvalds's avatar
      Merge branch 'dentry-cleanups' (dcache access cleanups and optimizations) · 31ed8e6f
      Linus Torvalds authored
      This branch simplifies and clarifies the dcache lookup, and allows us to
      do certain nice optimizations when comparing dentries.  It also cleans
      up the interface to __d_lookup_rcu(), especially around passing the
      inode information around.
      
      * dentry-cleanups:
        vfs: make it possible to access the dentry hash/len as one 64-bit entry
        vfs: move dentry name length comparison from dentry_cmp() into callers
        vfs: do the careful dentry name access for all dentry_cmp cases
        vfs: remove unnecessary d_unhashed() check from __d_lookup_rcu
        vfs: clean up __d_lookup_rcu() and dentry_cmp() interfaces
      31ed8e6f
    • Linus Torvalds's avatar
      Merge branch 'vfs-cleanups' (random vfs cleanups) · 7e5cb5e1
      Linus Torvalds authored
      This teaches vfs_fstat() to use the appropriate f[get|put]_light
      functions, allowing it to avoid some unnecessary locking for the common
      case.
      
      More noticeably, it also cleans up and simplifies the "getname_flags()"
      function, which now relies on the architecture strncpy_from_user() doing
      all the user access checks properly, instead of hacking around the fact
      that on x86 it didn't use to do it right (see commit 92ae03f2: "x86:
      merge 32/64-bit versions of 'strncpy_from_user()' and speed it up").
      
      * vfs-cleanups:
        VFS: make vfs_fstat() use f[get|put]_light()
        VFS: clean up and simplify getname_flags()
        x86: make word-at-a-time strncpy_from_user clear bytes at the end
      7e5cb5e1
    • Linus Torvalds's avatar
      Merge branch 'stat-cleanups' (clean up copying of stat info to user space) · 8c12fec9
      Linus Torvalds authored
      This makes cp_new_stat() a bit more readable, and avoids having to
      memset() the whole structure just to fill in a couple of padding fields.
      
      This is another result of me looking at code generation of functions
      that show up high on certain kernel profiles, and just going "Oh, let's
      just clean that up".
      
      Architectures that don't supply the #define to fill just the padding
      fields will still fall back to memset().
      
      * stat-cleanups:
        vfs: don't force a big memset of stat data just to clear padding fields
        vfs: de-crapify "cp_new_stat()" function
      8c12fec9
    • Linus Torvalds's avatar
      Merge branch 'vm-cleanups' (unmap_vma() interface cleanup) · dddbd541
      Linus Torvalds authored
      This series sanitizes the interface to unmap_vma().  The crazy interface
      annoyed me no end when I was looking at unmap_single_vma(), which we can
      spend quite a lot of time in (especially with loads that have a lot of
      small fork/exec's: shell scripts etc).
      
      Moving the nr_accounted calculations to where they belong at least
      clarifies things a little.  I hope to come back to look at the
      performance of this later, but if/when I get back to it I at least don't
      have to see the crazy interfaces any more.
      
      * vm-cleanups:
        vm: remove 'nr_accounted' calculations from the unmap_vmas() interfaces
        vm: simplify unmap_vmas() calling convention
      dddbd541
    • Djalal Harouni's avatar
      drivers/net/stmmac: seq_file fix memory leak · 74863948
      Djalal Harouni authored
      Use single_release() instead of seq_release() to free memory allocated
      by single_open().
      Signed-off-by: default avatarDjalal Harouni <tixxdz@opendz.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      74863948
    • Steven Miao's avatar
      blackfin: fix build after add bf60x mach/pm.h · 672552ad
      Steven Miao authored
      Signed-off-by: default avatarSteven Miao <realmz6@gmail.com>
      Signed-off-by: default avatarBob Liu <lliubbo@gmail.com>
      672552ad
    • Sonic Zhang's avatar
      blackfin: twi: include linux/i2c.h · bda45b8f
      Sonic Zhang authored
      Signed-off-by: default avatarSonic Zhang <sonic.zhang@analog.com>
      Signed-off-by: default avatarBob Liu <lliubbo@gmail.com>
      bda45b8f
    • Sonic Zhang's avatar
      7967ba01
    • Sonic Zhang's avatar
      blackfin: bf60x: twi: work around temporary anomaly 0501001 · c41704f5
      Sonic Zhang authored
      Disable IRQ when reading MMR rcv_data8 and rcv_data16.
      Signed-off-by: default avatarSonic Zhang <sonic.zhang@analog.com>
      Signed-off-by: default avatarBob Liu <lliubbo@gmail.com>
      c41704f5
    • Sonic Zhang's avatar
      1e92bf6d
    • Sonic Zhang's avatar
    • Sonic Zhang's avatar
      blackfin: bf60x: anomaly: Add a temporary anomaly 0501001 · 913f2f2d
      Sonic Zhang authored
      Add a temporary anomaly 0501001 for data loss in MMR reading if interrupted.
      Add work around for bfin serial driver as well.
      Signed-off-by: default avatarSonic Zhang <sonic.zhang@analog.com>
      Signed-off-by: default avatarBob Liu <lliubbo@gmail.com>
      913f2f2d
    • Sonic Zhang's avatar
      blackfin: bf60x: Rename the DDR controller macro · 8bf7135f
      Sonic Zhang authored
      Rename the DDR controller macro from DDR0 to DMC0 to avoid confustion for
      bf60x.
      Signed-off-by: default avatarSonic Zhang <sonic.zhang@analog.com>
      Signed-off-by: default avatarBob Liu <lliubbo@gmail.com>
      8bf7135f
    • Steven Miao's avatar
      blackfin: mach-bf609: pm: cleanup bfin_deepsleep · 5a84775e
      Steven Miao authored
      In bfin_deepsleep(), using register instead of local variable and remove
      unused dpmc register read.
      Signed-off-by: default avatarSteven Miao <realmz6@gmail.com>
      Signed-off-by: default avatarBob Liu <lliubbo@gmail.com>
      5a84775e
    • Sonic Zhang's avatar
      blackfin: bf60x: cleanup get clock code · 1d3dbda6
      Sonic Zhang authored
      Remove redundance code for get clock.
      Signed-off-by: default avatarSonic Zhang <sonic.zhang@analog.com>
      Signed-off-by: default avatarBob Liu <lliubbo@gmail.com>
      1d3dbda6
    • Sonic Zhang's avatar
      blackfin: bf60x: pm: Add a debug option to calculate kernel wakeup time. · 72b099ed
      Sonic Zhang authored
      Display the total time when kernel resumes normal from standby or suspend to mem
      mode.
      Signed-off-by: default avatarSonic Zhang <sonic.zhang@analog.com>
      Signed-off-by: default avatarBob Liu <lliubbo@gmail.com>
      72b099ed
    • Steven Miao's avatar
      blackfin: bf60x: add wakeup source select · 0fbd88ca
      Steven Miao authored
      Support select the wakeup source for power management on bf60x.
      Signed-off-by: default avatarSteven Miao <realmz6@gmail.com>
      Signed-off-by: default avatarBob Liu <lliubbo@gmail.com>
      0fbd88ca
    • Bob Liu's avatar
      blackfin: bf60x: make clock changeable in kernel menuconfig · 7c141c1c
      Bob Liu authored
      Add clock changeable support in kernel menuconfig for bf60x.
      Signed-off-by: default avatarBob Liu <lliubbo@gmail.com>
      7c141c1c
    • Bob Liu's avatar
      blackfin:mach-bf609: fix norflash for bf609-ezkit · 1c400939
      Bob Liu authored
      Set smc register to async flash protocol mode and use physmap driver instead of
      bfin-bf6xx.
      Signed-off-by: default avatarBob Liu <lliubbo@gmail.com>
      1c400939
    • Bob Liu's avatar
      6e1953e1
    • Sonic Zhang's avatar
      36413022
    • Sonic Zhang's avatar
      blackfin: rotary: Add pm_wakeup flag to platform data structure. · 5b8163a3
      Sonic Zhang authored
      Rotary can't be used as a wakeup source in all platform.
      Signed-off-by: default avatarSonic Zhang <sonic.zhang@analog.com>
      Signed-off-by: default avatarBob Liu <lliubbo@gmail.com>
      5b8163a3
    • Steven Miao's avatar
      bfin_gpio: fix bf548-ezkit kernel fail to boot · ec98e6b8
      Steven Miao authored
      Fix bf548-ezkit kernel fail to boot when request peripheral pins.
      Signed-off-by: default avatarSteven Miao <realmz6@gmail.com>
      Signed-off-by: default avatarBob Liu <lliubbo@gmail.com>
      ec98e6b8
    • Steven Miao's avatar
      1a121451
    • Mike Frysinger's avatar
      Blackfin: delete fork func · 080bb657
      Mike Frysinger authored
      We don't implement fork() since we are no-mmu, so redirect it to the
      existing ENOSYS stub rather than adding a custom EINVAL one.
      Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
      Signed-off-by: default avatarBob Liu <lliubbo@gmail.com>
      080bb657