1. 19 12月, 2015 1 次提交
  2. 15 12月, 2015 1 次提交
  3. 08 12月, 2015 1 次提交
  4. 07 12月, 2015 1 次提交
  5. 03 12月, 2015 5 次提交
    • O
      cgroup: kill cgrp_ss_priv[CGROUP_CANFORK_COUNT] and friends · b53202e6
      Oleg Nesterov 提交于
      Now that nobody use the "priv" arg passed to can_fork/cancel_fork/fork we can
      kill CGROUP_CANFORK_COUNT/SUBSYS_TAG/etc and cgrp_ss_priv[] in copy_process().
      Signed-off-by: NOleg Nesterov <oleg@redhat.com>
      Signed-off-by: NTejun Heo <tj@kernel.org>
      b53202e6
    • T
      Merge branch 'for-4.4-fixes' into for-4.5 · 8075b542
      Tejun Heo 提交于
      8075b542
    • T
      cgroup_pids: don't account for the root cgroup · 67cde9c4
      Tejun Heo 提交于
      Because accounting resources for the root cgroup sometimes incurs
      measureable overhead for workloads which don't care about cgroup and
      often ends up calculating a number which is available elsewhere in a
      slightly different form, cgroup is not in the business of providing
      system-wide statistics.  The pids controller which was introduced
      recently was exposing "pids.current" at the root.  This patch disable
      accounting for root cgroup and removes the file from the root
      directory.
      
      While this is a userland visible behavior change, pids has been
      available only in one version and was badly broken there, so I don't
      think this will be noticeable.  If it turns out to be a problem, we
      can reinstate it for v1 hierarchies.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Cc: Aleksa Sarai <cyphar@cyphar.com>
      67cde9c4
    • T
      cgroup: fix handling of multi-destination migration from subtree_control enabling · 1f7dd3e5
      Tejun Heo 提交于
      Consider the following v2 hierarchy.
      
        P0 (+memory) --- P1 (-memory) --- A
                                       \- B
             
      P0 has memory enabled in its subtree_control while P1 doesn't.  If
      both A and B contain processes, they would belong to the memory css of
      P1.  Now if memory is enabled on P1's subtree_control, memory csses
      should be created on both A and B and A's processes should be moved to
      the former and B's processes the latter.  IOW, enabling controllers
      can cause atomic migrations into different csses.
      
      The core cgroup migration logic has been updated accordingly but the
      controller migration methods haven't and still assume that all tasks
      migrate to a single target css; furthermore, the methods were fed the
      css in which subtree_control was updated which is the parent of the
      target csses.  pids controller depends on the migration methods to
      move charges and this made the controller attribute charges to the
      wrong csses often triggering the following warning by driving a
      counter negative.
      
       WARNING: CPU: 1 PID: 1 at kernel/cgroup_pids.c:97 pids_cancel.constprop.6+0x31/0x40()
       Modules linked in:
       CPU: 1 PID: 1 Comm: systemd Not tainted 4.4.0-rc1+ #29
       ...
        ffffffff81f65382 ffff88007c043b90 ffffffff81551ffc 0000000000000000
        ffff88007c043bc8 ffffffff810de202 ffff88007a752000 ffff88007a29ab00
        ffff88007c043c80 ffff88007a1d8400 0000000000000001 ffff88007c043bd8
       Call Trace:
        [<ffffffff81551ffc>] dump_stack+0x4e/0x82
        [<ffffffff810de202>] warn_slowpath_common+0x82/0xc0
        [<ffffffff810de2fa>] warn_slowpath_null+0x1a/0x20
        [<ffffffff8118e031>] pids_cancel.constprop.6+0x31/0x40
        [<ffffffff8118e0fd>] pids_can_attach+0x6d/0xf0
        [<ffffffff81188a4c>] cgroup_taskset_migrate+0x6c/0x330
        [<ffffffff81188e05>] cgroup_migrate+0xf5/0x190
        [<ffffffff81189016>] cgroup_attach_task+0x176/0x200
        [<ffffffff8118949d>] __cgroup_procs_write+0x2ad/0x460
        [<ffffffff81189684>] cgroup_procs_write+0x14/0x20
        [<ffffffff811854e5>] cgroup_file_write+0x35/0x1c0
        [<ffffffff812e26f1>] kernfs_fop_write+0x141/0x190
        [<ffffffff81265f88>] __vfs_write+0x28/0xe0
        [<ffffffff812666fc>] vfs_write+0xac/0x1a0
        [<ffffffff81267019>] SyS_write+0x49/0xb0
        [<ffffffff81bcef32>] entry_SYSCALL_64_fastpath+0x12/0x76
      
      This patch fixes the bug by removing @css parameter from the three
      migration methods, ->can_attach, ->cancel_attach() and ->attach() and
      updating cgroup_taskset iteration helpers also return the destination
      css in addition to the task being migrated.  All controllers are
      updated accordingly.
      
      * Controllers which don't care whether there are one or multiple
        target csses can be converted trivially.  cpu, io, freezer, perf,
        netclassid and netprio fall in this category.
      
      * cpuset's current implementation assumes that there's single source
        and destination and thus doesn't support v2 hierarchy already.  The
        only change made by this patchset is how that single destination css
        is obtained.
      
      * memory migration path already doesn't do anything on v2.  How the
        single destination css is obtained is updated and the prep stage of
        mem_cgroup_can_attach() is reordered to accomodate the change.
      
      * pids is the only controller which was affected by this bug.  It now
        correctly handles multi-destination migrations and no longer causes
        counter underflow from incorrect accounting.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Reported-and-tested-by: NDaniel Wagner <daniel.wagner@bmw-carit.de>
      Cc: Aleksa Sarai <cyphar@cyphar.com>
      1f7dd3e5
    • T
      cgroup_freezer: simplify propagation of CGROUP_FROZEN clearing in freezer_attach() · 599c963a
      Tejun Heo 提交于
      If one or more tasks get moved into a frozen css, the frozen state is
      cleared up from the destination css so that it can be reasserted once
      the migrated tasks are frozen.  freezer_attach() implements this in
      two separate steps - clearing CGROUP_FROZEN on the target css while
      processing each task and propagating the clearing upwards after the
      task loop is done if necessary.
      
      This patch merges the two steps.  Propagation now takes place inside
      the task loop.  This simplifies the code and prepares it for the fix
      of multi-destination migration.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      599c963a
  6. 30 11月, 2015 3 次提交
    • O
      cgroup: pids: kill pids_fork(), simplify pids_can_fork() and pids_cancel_fork() · afbcb364
      Oleg Nesterov 提交于
      Now that we know that the forking task can't migrate amd the child is always
      moved to the same cgroup by cgroup_post_fork()->css_set_move_task() we can
      change pids_can_fork() and pids_cancel_fork() to just use task_css(current).
      And since we no longer need to pin this css, we can remove pid_fork().
      
      Note: the patch uses task_css_check(true), perhaps it makes sense to add a
      helper or change task_css_set_check() to take cgroup_threadgroup_rwsem into
      account.
      Signed-off-by: NOleg Nesterov <oleg@redhat.com>
      Acked-by: NZefan Li <lizefan@huawei.com>
      Signed-off-by: NTejun Heo <tj@kernel.org>
      afbcb364
    • O
      cgroup: pids: fix race between cgroup_post_fork() and cgroup_migrate() · c9e75f04
      Oleg Nesterov 提交于
      If the new child migrates to another cgroup before cgroup_post_fork() calls
      subsys->fork(), then both pids_can_attach() and pids_fork() will do the same
      pids_uncharge(old_pids) + pids_charge(pids) sequence twice.
      
      Change copy_process() to call threadgroup_change_begin/threadgroup_change_end
      unconditionally. percpu_down_read() is cheap and this allows other cleanups,
      see the next changes.
      
      Also, this way we can unify cgroup_threadgroup_rwsem and dup_mmap_sem.
      Signed-off-by: NOleg Nesterov <oleg@redhat.com>
      Acked-by: NZefan Li <lizefan@huawei.com>
      Signed-off-by: NTejun Heo <tj@kernel.org>
      c9e75f04
    • T
      cgroup: make css_set pin its css's to avoid use-afer-free · 53254f90
      Tejun Heo 提交于
      A css_set represents the relationship between a set of tasks and
      css's.  css_set never pinned the associated css's.  This was okay
      because tasks used to always disassociate immediately (in RCU sense) -
      either a task is moved to a different css_set or exits and never
      accesses css_set again.
      
      Unfortunately, afcf6c8b ("cgroup: add cgroup_subsys->free() method
      and use it to fix pids controller") and patches leading up to it made
      a zombie hold onto its css_set and deref the associated css's on its
      release.  Nothing pins the css's after exit and it might have already
      been freed leading to use-after-free.
      
       general protection fault: 0000 [#1] PREEMPT SMP
       task: ffffffff81bf2500 ti: ffffffff81be4000 task.ti: ffffffff81be4000
       RIP: 0010:[<ffffffff810fa205>]  [<ffffffff810fa205>] pids_cancel.constprop.4+0x5/0x40
       ...
       Call Trace:
        <IRQ>
        [<ffffffff810fb02d>] ? pids_free+0x3d/0xa0
        [<ffffffff810f8893>] cgroup_free+0x53/0xe0
        [<ffffffff8104ed62>] __put_task_struct+0x42/0x130
        [<ffffffff81053557>] delayed_put_task_struct+0x77/0x130
        [<ffffffff810c6b34>] rcu_process_callbacks+0x2f4/0x820
        [<ffffffff810c6af3>] ? rcu_process_callbacks+0x2b3/0x820
        [<ffffffff81056e54>] __do_softirq+0xd4/0x460
        [<ffffffff81057369>] irq_exit+0x89/0xa0
        [<ffffffff81876212>] smp_apic_timer_interrupt+0x42/0x50
        [<ffffffff818747f4>] apic_timer_interrupt+0x84/0x90
        <EOI>
       ...
       Code: 5b 5d c3 48 89 df 48 c7 c2 c9 f9 ae 81 48 c7 c6 91 2c ae 81 e8 1d 94 0e 00 31 c0 5b 5d c3 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 <f0> 48 83 87 e0 00 00 00 ff 78 01 c3 80 3d 08 7a c1 00 00 74 02
       RIP  [<ffffffff810fa205>] pids_cancel.constprop.4+0x5/0x40
        RSP <ffff88001fc03e20>
       ---[ end trace 89a4a4b916b90c49 ]---
       Kernel panic - not syncing: Fatal exception in interrupt
       Kernel Offset: disabled
       ---[ end Kernel panic - not syncing: Fatal exception in interrupt
      
      Fix it by making css_set pin the associate css's until its release.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Reported-by: NDave Jones <davej@codemonkey.org.uk>
      Reported-by: NDaniel Wagner <daniel.wagner@bmw-carit.de>
      Link: http://lkml.kernel.org/g/20151120041836.GA18390@codemonkey.org.uk
      Link: http://lkml.kernel.org/g/5652D448.3080002@bmw-carit.de
      Fixes: afcf6c8b ("cgroup: add cgroup_subsys->free() method and use it to fix pids controller")
      53254f90
  7. 26 11月, 2015 1 次提交
    • A
      cpuset: Replace all instances of time_t with time64_t · d2b43658
      Arnd Bergmann 提交于
      The following patch replaces all instances of time_t with time64_t i.e.
      change the type used for representing time from 32-bit to 64-bit. All
      32-bit kernels to date use a signed 32-bit time_t type, which can only
      represent time until January 2038. Since embedded systems running 32-bit
      Linux are going to survive beyond that date, we have to change all
      current uses, in a backwards compatible way.
      
      The patch also changes the function get_seconds() that returns a 32-bit
      integer to ktime_get_seconds() that returns seconds as 64-bit integer.
      
      The patch changes the type of ticks from time_t to u32. We keep ticks as
      32-bits as the function uses 32-bit arithmetic which would prove less
      expensive than 64-bit arithmetic and the function is expected to be
      called atleast once every 32 seconds.
      Signed-off-by: NHeena Sirwani <heenasirwani@gmail.com>
      Reviewed-by: NArnd Bergmann <arnd@arndb.de>
      Signed-off-by: NArnd Bergmann <arnd@arndb.de>
      Signed-off-by: NTejun Heo <tj@kernel.org>
      d2b43658
  8. 21 11月, 2015 3 次提交
    • T
      cgroup: implement cgroup_get_from_path() and expose cgroup_put() · 16af4396
      Tejun Heo 提交于
      Implement cgroup_get_from_path() using kernfs_walk_and_get() which
      obtains a default hierarchy cgroup from its path.  This will be used
      to allow cgroup path based matching from outside cgroup proper -
      e.g. networking and perf.
      
      v2: Add EXPORT_SYMBOL_GPL(cgroup_get_from_path).
      Signed-off-by: NTejun Heo <tj@kernel.org>
      16af4396
    • T
      kernfs: implement kernfs_walk_and_get() · bd96f76a
      Tejun Heo 提交于
      Implement kernfs_walk_and_get() which is similar to
      kernfs_find_and_get() but can walk a path instead of just a name.
      
      v2: Use strlcpy() instead of strlen() + memcpy() as suggested by
          David.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: David Miller <davem@davemloft.net>
      bd96f76a
    • T
      cgroup: record ancestor IDs and reimplement cgroup_is_descendant() using it · b11cfb58
      Tejun Heo 提交于
      cgroup_is_descendant() currently walks up the hierarchy and compares
      each ancestor to the cgroup in question.  While enough for cgroup core
      usages, this can't be used in hot paths to test cgroup membership.
      This patch adds cgroup->ancestor_ids[] which records the IDs of all
      ancestors including self and cgroup->level for the nesting level.
      
      This allows testing whether a given cgroup is a descendant of another
      in three finite steps - testing whether the two belong to the same
      hierarchy, whether the descendant candidate is at the same or a higher
      level than the ancestor and comparing the recorded ancestor_id at the
      matching level.  cgroup_is_descendant() is accordingly reimplmented
      and made inline.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      b11cfb58
  9. 17 11月, 2015 3 次提交
  10. 16 11月, 2015 8 次提交
    • T
      cgroup: fix cftype->file_offset handling · 34c06254
      Tejun Heo 提交于
      6f60eade ("cgroup: generalize obtaining the handles of and
      notifying cgroup files") introduced cftype->file_offset so that the
      handles for per-css file instances can be recorded.  These handles
      then can be used, for example, to generate file modified
      notifications.
      
      Unfortunately, it made the wrong assumption that files are created
      once for a given css and removed on its destruction.  Due to the
      dependencies among subsystems, a css may be hidden from userland and
      then later shown again.  This is implemented by removing and
      re-creating the affected files, so the associated kernfs_node for a
      given cgroup file may change over time.  This incorrect assumption led
      to the corruption of css->files lists.
      
      Reimplement cftype->file_offset handling so that cgroup_file->kn is
      protected by a lock and updated as files are created and destroyed.
      This also makes keeping them on per-cgroup list unnecessary.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Reported-by: NJames Sedgwick <jsedgwick@fb.com>
      Fixes: 6f60eade ("cgroup: generalize obtaining the handles of and notifying cgroup files")
      Acked-by: NJohannes Weiner <hannes@cmpxchg.org>
      Acked-by: NZefan Li <lizefan@huawei.com>
      34c06254
    • L
      Linux 4.4-rc1 · 8005c49d
      Linus Torvalds 提交于
      8005c49d
    • L
      Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 0ca9b676
      Linus Torvalds 提交于
      Pull perf updates from Thomas Gleixner:
       "Mostly updates to the perf tool plus two fixes to the kernel core code:
      
         - Handle tracepoint filters correctly for inherited events (Peter
           Zijlstra)
      
         - Prevent a deadlock in perf_lock_task_context (Paul McKenney)
      
         - Add missing newlines to some pr_err() calls (Arnaldo Carvalho de
           Melo)
      
         - Print full source file paths when using 'perf annotate --print-line
           --full-paths' (Michael Petlan)
      
         - Fix 'perf probe -d' when just one out of uprobes and kprobes is
           enabled (Wang Nan)
      
         - Add compiler.h to list.h to fix 'make perf-tar-src-pkg' generated
           tarballs, i.e. out of tree building (Arnaldo Carvalho de Melo)
      
         - Add the llvm-src-base.c and llvm-src-kbuild.c files, generated by
           the 'perf test' LLVM entries, when running it in-tree, to
           .gitignore (Yunlong Song)
      
         - libbpf error reporting improvements, using a strerror interface to
           more precisely tell the user about problems with the provided
           scriptlet, be it in C or as a ready made object file (Wang Nan)
      
         - Do not be case sensitive when searching for matching 'perf test'
           entries (Arnaldo Carvalho de Melo)
      
         - Inform the user about objdump failures in 'perf annotate' (Andi
           Kleen)
      
         - Improve the LLVM 'perf test' entry, introduce a new ones for BPF
           and kbuild tests to check the environment used by clang to compile
           .c scriptlets (Wang Nan)"
      
      * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (32 commits)
        perf/x86/intel/rapl: Remove the unused RAPL_EVENT_DESC() macro
        tools include: Add compiler.h to list.h
        perf probe: Verify parameters in two functions
        perf session: Add missing newlines to some pr_err() calls
        perf annotate: Support full source file paths for srcline fix
        perf test: Add llvm-src-base.c and llvm-src-kbuild.c to .gitignore
        perf: Fix inherited events vs. tracepoint filters
        perf: Disable IRQs across RCU RS CS that acquires scheduler lock
        perf test: Do not be case sensitive when searching for matching tests
        perf test: Add 'perf test BPF'
        perf test: Enhance the LLVM tests: add kbuild test
        perf test: Enhance the LLVM test: update basic BPF test program
        perf bpf: Improve BPF related error messages
        perf tools: Make fetch_kernel_version() publicly available
        bpf tools: Add new API bpf_object__get_kversion()
        bpf tools: Improve libbpf error reporting
        perf probe: Cleanup find_perf_probe_point_from_map to reduce redundancy
        perf annotate: Inform the user about objdump failures in --stdio
        perf stat: Make stat options global
        perf sched latency: Fix thread pid reuse issue
        ...
      0ca9b676
    • L
      Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 051b29f2
      Linus Torvalds 提交于
      Pull scheduler fix from Thomas Gleixner:
       "A single fix to prevent math underflow in the numa balancing code"
      
      * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        sched/numa: Fix math underflow in task_tick_numa()
      051b29f2
    • L
      Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 8f98e292
      Linus Torvalds 提交于
      Pull liblockdep fixes from Thomas Gleixner:
       "Three small patches to synchronize liblockdep with the latest core
        changes"
      
      * 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        tools/liblockdep: explicitly declare lockdep API we call from liblockdep
        tools/liblockdep: add userspace versions of WRITE_ONCE and RCU_INIT_POINTER
        tools/liblockdep: remove task argument from debug_check_no_locks_held
      8f98e292
    • L
      Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · bba072df
      Linus Torvalds 提交于
      Pull x86 fixes from Thomas Gleixner:
       "A couple of fixes and updates related to x86:
      
         - Fix the W+X check regression on XEN
      
         - The real fix for the low identity map trainwreck
      
         - Probe legacy PIC early instead of unconditionally allocating legacy
           irqs
      
         - Add cpu verification to long mode entry
      
         - Adjust the cache topology to AMD Fam17H systems
      
         - Let Merrifield use the TSC across S3"
      
      * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86/cpu: Call verify_cpu() after having entered long mode too
        x86/setup: Fix low identity map for >= 2GB kernel range
        x86/mm: Skip the hypervisor range when walking PGD
        x86/AMD: Fix last level cache topology for AMD Fam17h systems
        x86/irq: Probe for PIC presence before allocating descs for legacy IRQs
        x86/cpu/intel: Enable X86_FEATURE_NONSTOP_TSC_S3 for Merrifield
      bba072df
    • L
      Merge branches 'irq-urgent-for-linus' and 'timers-urgent-for-linus' of... · 511601bd
      Linus Torvalds 提交于
      Merge branches 'irq-urgent-for-linus' and 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
      
      Pull irq and timer fixes from Thomas Gleixner:
      
       - An irq regression fix to restore the wakeup behaviour of chained
         interrupts.
      
       - A timer fix for a long standing race versus timers scheduled on a
         target cpu which got exposed by recent changes in the workqueue
         implementation.
      
      * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        genirq/PM: Restore system wake up from chained interrupts
      
      * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        timers: Use proper base migration in add_timer_on()
      511601bd
    • L
      Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus · b84da9fa
      Linus Torvalds 提交于
      Pull MIPS updates from Ralf Baechle:
       "These are the highlists of the main MIPS pull request for 4.4:
      
         - Add latencytop support
         - Support appended DTBs
         - VDSO support and initially use it for gettimeofday.
         - Drop the .MIPS.abiflags and ELF NOTE sections from vmlinux
         - Support for the 5KE, an internal test core.
         - Switch all MIPS platfroms to libata drivers.
         - Improved support, cleanups for ralink and Lantiq platforms.
         - Support for the new xilfpga platform.
         - A number of DTB improvments for BMIPS.
         - Improved support for CM and CPS.
         - Minor JZ4740 and BCM47xx enhancements"
      
      * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (120 commits)
        MIPS: idle: add case for CPU_5KE
        MIPS: Octeon: Support APPENDED_DTB
        MIPS: vmlinux: create a section for appended DTB
        MIPS: Clean up compat_siginfo_t
        MIPS: Fix PAGE_MASK definition
        MIPS: BMIPS: Enable GZIP ramdisk and timed printks
        MIPS: Add xilfpga defconfig
        MIPS: xilfpga: Add mipsfpga platform code
        MIPS: xilfpga: Add xilfpga device tree files.
        dt-bindings: MIPS: Document xilfpga bindings and boot style
        MIPS: Make MIPS_CMDLINE_DTB default
        MIPS: Make the kernel arguments from dtb available
        MIPS: Use USE_OF as the guard for appended dtb
        MIPS: BCM63XX: Use pr_* instead of printk
        MIPS: Loongson: Cleanup CONFIG_LOONGSON_SUSPEND.
        MIPS: lantiq: Disable xbar fpi burst mode
        MIPS: lantiq: Force the crossbar to big endian
        MIPS: lantiq: Initialize the USB core on boot
        MIPS: lantiq: Return correct value for fpi clock on ar9
        MIPS: ralink: Add missing clock on rt305x
        ...
      b84da9fa
  11. 15 11月, 2015 2 次提交
    • L
      Merge tag 'sound-fix-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound · 12b76f3b
      Linus Torvalds 提交于
      Pull sound fixes from Takashi Iwai:
       "Here are a collection of small fixes tha have been gathered for
        4.4-rc1.  The only significant changes are those in PCI drivers
        Kconfig, to use "depends on" instead of "select" for CONFIG_ZONE_DMA.
        A reverse select is often more user-friendly, but in this case, it
        makes hard to manage with the conflict with ZONE_DEVICE, so changed in
        such a way for now.
      
        Others are all small fixes and quirks: an error check in soundcore
        reigster_chrdev(), HD-audio HDMI/DP phantom jack fix, Intel Broxton DP
        quirk, USB-audio DSD device quirk, some constifications, etc"
      
      * tag 'sound-fix-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
        ALSA: pci: depend on ZONE_DMA
        ALSA: hda - Simplify phantom jack handling for HDMI/DP
        ALSA: hda/hdmi - apply Skylake fix-ups to Broxton display codec
        ALSA: ctxfi: constify rsc ops structures
        ALSA: usb: Add native DSD support for Aune X1S
        ALSA: oxfw: add an comment to Kconfig for TASCAM FireOne
        sound: fix check for error condition of register_chrdev()
      12b76f3b
    • L
      Merge tag 'arc-4.4-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc · b3a0d9a2
      Linus Torvalds 提交于
      Pull ARC fixes from Vineet Gupta:
       "Found a couple of brown paper bag bugs with the prev pull request
        (including a SMP build breakage report from Guenter).  Since these are
        urgent I also decided to send over a bunch of other pending fixes
        which could have otherwise waited an rc or two.
      
        Summary:
      
         - A bunch of brown paper bag bugs (MAINTAINERS list email, SMP build
           failure)
         - cpu_relax() now compiler barrier for UP as well
         - handling of userspace Bus Errors for ARCompact builds"
      
      * tag 'arc-4.4-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
        ARC: Fix silly typo in MAINTAINERS file
        ARC: cpu_relax() to be compiler barrier even for UP
        ARC: use ASL assembler mnemonic
        ARC: [arcompact] Handle bus error from userspace as Interrupt not exception
        ARC: remove extraneous header include
        ARCv2: lib: memcpy: use local symbols
      b3a0d9a2
  12. 14 11月, 2015 11 次提交
    • V
      ARC: Fix silly typo in MAINTAINERS file · 30b9dbee
      Vineet Gupta 提交于
      30b9dbee
    • V
      ARC: cpu_relax() to be compiler barrier even for UP · 1cfc05cb
      Vineet Gupta 提交于
      cpu_relax() on ARC has been barrier only for SMP (and no-op for UP). Per
      recent discussions, it is safer to make it a compiler barrier
      unconditionally.
      
      Link: http://lkml.kernel.org/r/53A7D3AA.9020100@synopsys.comAcked-by: NPeter Zijlstra <peterz@infradead.org>
      Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
      1cfc05cb
    • V
      ARC: use ASL assembler mnemonic · a6416f57
      Vineet Gupta 提交于
      ARCompact and ARCv2 only have ASL, while binutils used to support LSL as
      a alias mnemonic.
      
      Newer binutils (upstream) don't want to do that so replace it.
      Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
      a6416f57
    • V
      ARC: [arcompact] Handle bus error from userspace as Interrupt not exception · 541366da
      Vineet Gupta 提交于
      Bus errors from userspace on ARCompact based cores are handled by core
      as a high priority L2 interrupt but current code treated it as interrupt
      Handling an interrupt like exception is certainly not going to go unnoticed.
      (and it worked so far as we never saw a Bus error from userspace until
      IPPK guys tested a DDR controller with ECC error detection etc hence
      needed to explicitly trigger/handle such errors)
      
       - So move mem_service exception handler from common code into ARCv2 code.
       - In ARCompact code, define  mem_service as L2 interrupt handler which
         just drops down to pure kernel mode and goes of to enqueue SIGBUS
      Reported-by: NNelson Pereira <npereira@synopsys.com>
      Tested-by: NAna Martins <amartins@synopsys.com>
      Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
      541366da
    • V
      ARC: remove extraneous header include · 76a8c40c
      Vineet Gupta 提交于
      Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
      76a8c40c
    • L
      Merge tag 'chrome-platform-4.4' of... · 63f4f7e8
      Linus Torvalds 提交于
      Merge tag 'chrome-platform-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/chrome-platform
      
      Pull chrome platform updates from Olof Johansson:
       "Here's the branch of chrome platform changes for v4.4.  Some have been
        queued up for the full 4.3 release cycle since I forgot to send them
        in for that round (rebased early on to deal with fixes conflicts).
      
        Most of these enable EC communication stuff -- Pixel 2015 support,
        enabling building for ARM64 platforms, and a few fixes for memory
        leaks.
      
        There's also a patch in here to allow reading/writing the verified
        boot context, which depends on a sysfs patch acked by Greg"
      
      * tag 'chrome-platform-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/chrome-platform:
        platform/chrome: Fix i2c-designware adapter name
        platform/chrome: Support reading/writing the vboot context
        sysfs: Support is_visible() on binary attributes
        platform/chrome: cros_ec: Fix possible leak in led_rgb_store()
        platform/chrome: cros_ec: Fix leak in sequence_store()
        platform/chrome: Enable Chrome platforms on 64-bit ARM
        platform/chrome: cros_ec_dev - Add a platform device ID table
        platform/chrome: cros_ec_lpc - Add support for Google Pixel 2
        platform/chrome: cros_ec_lpc - Use existing function to check EC result
        platform/chrome: Make depends on MFD_CROS_EC instead CROS_EC_PROTO
        Revert "platform/chrome: Don't make CHROME_PLATFORMS depends on X86 || ARM"
      63f4f7e8
    • L
      Merge tag 'platform-drivers-x86-v4.4-2' of... · 4bfc89d2
      Linus Torvalds 提交于
      Merge tag 'platform-drivers-x86-v4.4-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86
      
      Pull another x86 platform driver update from Darren Hart:
       "Support for the unfortunately rather unique ESC key on the Ideapad
        Yoga 3 and two DMI matches for rfkill support.  Solitary fix for
        potential missed errors for asus-wmi.  Downgrade a thinkpad_acpi
        message to info.
      
        asus-wmi:
         - fix error handling in store_sys_wmi()
      
        ideapad-laptop:
         - Add Lenovo Yoga 900 to no_hw_rfkill dmi list
         - include Yoga 3 1170 in add rfkill whitelist
         - add support for Yoga 3 ESC key
      
        thinkpad_acpi:
         - Don't yell on unsupported brightness interfaces"
      
      * tag 'platform-drivers-x86-v4.4-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
        asus-wmi: fix error handling in store_sys_wmi()
        ideapad-laptop: Add Lenovo Yoga 900 to no_hw_rfkill dmi list
        ideapad-laptop: include Yoga 3 1170 in add rfkill whitelist
        ideapad-laptop: add support for Yoga 3 ESC key
        thinkpad_acpi: Don't yell on unsupported brightness interfaces
      4bfc89d2
    • L
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input · a30b7ca2
      Linus Torvalds 提交于
      Pull more input updates from Dmitry Torokhov:
       "An update to the tsc2005 driver that allows it to also support tsc2004
        (basically the same controller, but uses i2c instead of spi bus), and
        a couple of bug fixes"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
        Input: parkbd - drop bogus __init from parkbd_allocate_serio()
        Input: elantech - add Fujitsu Lifebook U745 to force crc_enabled
        Input: tsc2004 - add support for tsc2004
        Input: tsc200x-core - rename functions and variables
        Input: tsc2005 - separate SPI and core functions
      a30b7ca2
    • L
      Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · d83763f4
      Linus Torvalds 提交于
      Pull final round of SCSI updates from James Bottomley:
       "Sorry for the delay in this patch which was mostly caused by getting
        the merger of the mpt2/mpt3sas driver, which was seen as an essential
        item of maintenance work to do before the drivers diverge too much.
        Unfortunately, this caused a compile failure (detected by linux-next),
        which then had to be fixed up and incubated.
      
        In addition to the mpt2/3sas rework, there are updates from pm80xx,
        lpfc, bnx2fc, hpsa, ipr, aacraid, megaraid_sas, storvsc and ufs plus
        an assortment of changes including some year 2038 issues, a fix for a
        remove before detach issue in some drivers and a couple of other minor
        issues"
      
      * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (141 commits)
        mpt3sas: fix inline markers on non inline function declarations
        sd: Clear PS bit before Mode Select.
        ibmvscsi: set max_lun to 32
        ibmvscsi: display default value for max_id, max_lun and max_channel.
        mptfusion: don't allow negative bytes in kbuf_alloc_2_sgl()
        scsi: pmcraid: replace struct timeval with ktime_get_real_seconds()
        mvumi: 64bit value for seconds_since1970
        be2iscsi: Fix bogus WARN_ON length check
        scsi_scan: don't dump trace when scsi_prep_async_scan() is called twice
        mpt3sas: Bump mpt3sas driver version to 09.102.00.00
        mpt3sas: Single driver module which supports both SAS 2.0 & SAS 3.0 HBAs
        mpt2sas, mpt3sas: Update the driver versions
        mpt3sas: setpci reset kernel oops fix
        mpt3sas: Added OEM Gen2 PnP ID branding names
        mpt3sas: Refcount fw_events and fix unsafe list usage
        mpt3sas: Refcount sas_device objects and fix unsafe list usage
        mpt3sas: sysfs attribute to report Backup Rail Monitor Status
        mpt3sas: Ported WarpDrive product SSS6200 support
        mpt3sas: fix for driver fails EEH, recovery from injected pci bus error
        mpt3sas: Manage MSI-X vectors according to HBA device type
        ...
      d83763f4
    • L
      Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending · 9aa3d651
      Linus Torvalds 提交于
      Pull SCSI target updates from Nicholas Bellinger:
       "This series contains HCH's changes to absorb configfs attribute
        ->show() + ->store() function pointer usage from it's original
        tree-wide consumers, into common configfs code.
      
        It includes usb-gadget, target w/ drivers, netconsole and ocfs2
        changes to realize the improved simplicity, that now renders the
        original include/target/configfs_macros.h CPP magic for fabric drivers
        and others, unnecessary and obsolete.
      
        And with common code in place, new configfs attributes can be added
        easier than ever before.
      
        Note, there are further improvements in-flight from other folks for
        v4.5 code in configfs land, plus number of target fixes for post -rc1
        code"
      
      In the meantime, a new user of the now-removed old configfs API came in
      through the char/misc tree in commit 7bd1d409 ("stm class: Introduce
      an abstraction for System Trace Module devices").
      
      This merge resolution comes from Alexander Shishkin, who updated his stm
      class tracing abstraction to account for the removal of the old
      show_attribute and store_attribute methods in commit 51798222
      ("configfs: remove old API") from this pull.  As Alexander says about
      that patch:
      
       "There's no need to keep an extra wrapper structure per item and the
        awkward show_attribute/store_attribute item ops are no longer needed.
      
        This patch converts policy code to the new api, all the while making
        the code quite a bit smaller and easier on the eyes.
      
        Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>"
      
      That patch was folded into the merge so that the tree should be fully
      bisectable.
      
      * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (23 commits)
        configfs: remove old API
        ocfs2/cluster: use per-attribute show and store methods
        ocfs2/cluster: move locking into attribute store methods
        netconsole: use per-attribute show and store methods
        target: use per-attribute show and store methods
        spear13xx_pcie_gadget: use per-attribute show and store methods
        dlm: use per-attribute show and store methods
        usb-gadget/f_serial: use per-attribute show and store methods
        usb-gadget/f_phonet: use per-attribute show and store methods
        usb-gadget/f_obex: use per-attribute show and store methods
        usb-gadget/f_uac2: use per-attribute show and store methods
        usb-gadget/f_uac1: use per-attribute show and store methods
        usb-gadget/f_mass_storage: use per-attribute show and store methods
        usb-gadget/f_sourcesink: use per-attribute show and store methods
        usb-gadget/f_printer: use per-attribute show and store methods
        usb-gadget/f_midi: use per-attribute show and store methods
        usb-gadget/f_loopback: use per-attribute show and store methods
        usb-gadget/ether: use per-attribute show and store methods
        usb-gadget/f_acm: use per-attribute show and store methods
        usb-gadget/f_hid: use per-attribute show and store methods
        ...
      9aa3d651
    • L
      Merge branch 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs · 5d2eb548
      Linus Torvalds 提交于
      Pull vfs xattr cleanups from Al Viro.
      
      * 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
        f2fs: xattr simplifications
        squashfs: xattr simplifications
        9p: xattr simplifications
        xattr handlers: Pass handler to operations instead of flags
        jffs2: Add missing capability check for listing trusted xattrs
        hfsplus: Remove unused xattr handler list operations
        ubifs: Remove unused security xattr handler
        vfs: Fix the posix_acl_xattr_list return value
        vfs: Check attribute names in posix acl xattr handers
      5d2eb548