1. 17 Mar, 2016 24 commits
    • Vlastimil Babka's avatar
      mm, compaction: introduce kcompactd · 698b1b30
      Vlastimil Babka authored
      Memory compaction can be currently performed in several contexts:
      
       - kswapd balancing a zone after a high-order allocation failure
       - direct compaction to satisfy a high-order allocation, including THP
         page fault attemps
       - khugepaged trying to collapse a hugepage
       - manually from /proc
      
      The purpose of compaction is two-fold.  The obvious purpose is to
      satisfy a (pending or future) high-order allocation, and is easy to
      evaluate.  The other purpose is to keep overal memory fragmentation low
      and help the anti-fragmentation mechanism.  The success wrt the latter
      purpose is more
      
      The current situation wrt the purposes has a few drawbacks:
      
       - compaction is invoked only when a high-order page or hugepage is not
         available (or manually).  This might be too late for the purposes of
         keeping memory fragmentation low.
       - direct compaction increases latency of allocations.  Again, it would
         be better if compaction was performed asynchronously to keep
         fragmentation low, before the allocation itself comes.
       - (a special case of the previous) the cost of compaction during THP
         page faults can easily offset the benefits of THP.
       - kswapd compaction appears to be complex, fragile and not working in
         some scenarios.  It could also end up compacting for a high-order
         allocation request when it should be reclaiming memory for a later
         order-0 request.
      
      To improve the situation, we should be able to benefit from an
      equivalent of kswapd, but for compaction - i.e. a background thread
      which responds to fragmentation and the need for high-order allocations
      (including hugepages) somewhat proactively.
      
      One possibility is to extend the responsibilities of kswapd, which could
      however complicate its design too much.  It should be better to let
      kswapd handle reclaim, as order-0 allocations are often more critical
      than high-order ones.
      
      Another possibility is to extend khugepaged, but this kthread is a
      single instance and tied to THP configs.
      
      This patch goes with the option of a new set of per-node kthreads called
      kcompactd, and lays the foundations, without introducing any new
      tunables.  The lifecycle mimics kswapd kthreads, including the memory
      hotplug hooks.
      
      For compaction, kcompactd uses the standard compaction_suitable() and
      ompact_finished() criteria and the deferred compaction functionality.
      Unlike direct compaction, it uses only sync compaction, as there's no
      allocation latency to minimize.
      
      This patch doesn't yet add a call to wakeup_kcompactd.  The kswapd
      compact/reclaim loop for high-order pages will be replaced by waking up
      kcompactd in the next patch with the description of what's wrong with
      the old approach.
      
      Waking up of the kcompactd threads is also tied to kswapd activity and
      follows these rules:
       - we don't want to affect any fastpaths, so wake up kcompactd only from
         the slowpath, as it's done for kswapd
       - if kswapd is doing reclaim, it's more important than compaction, so
         don't invoke kcompactd until kswapd goes to sleep
       - the target order used for kswapd is passed to kcompactd
      
      Future possible future uses for kcompactd include the ability to wake up
      kcompactd on demand in special situations, such as when hugepages are
      not available (currently not done due to __GFP_NO_KSWAPD) or when a
      fragmentation event (i.e.  __rmqueue_fallback()) occurs.  It's also
      possible to perform periodic compaction with kcompactd.
      
      [arnd@arndb.de: fix build errors with kcompactd]
      [paul.gortmaker@windriver.com: don't use modular references for non modular code]
      Signed-off-by: default avatarVlastimil Babka <vbabka@suse.cz>
      Cc: Andrea Arcangeli <aarcange@redhat.com>
      Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
      Cc: Rik van Riel <riel@redhat.com>
      Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
      Cc: Mel Gorman <mgorman@techsingularity.net>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Michal Hocko <mhocko@suse.com>
      Cc: Johannes Weiner <hannes@cmpxchg.org>
      Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
      Signed-off-by: default avatarPaul Gortmaker <paul.gortmaker@windriver.com>
      Cc: Hugh Dickins <hughd@google.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      698b1b30
    • Vlastimil Babka's avatar
      mm, kswapd: remove bogus check of balance_classzone_idx · 81c5857b
      Vlastimil Babka authored
      During work on kcompactd integration I have spotted a confusing check of
      balance_classzone_idx, which I believe is bogus.
      
      The balanced_classzone_idx is filled by balance_pgdat() as the highest
      zone it attempted to balance.  This was introduced by commit dc83edd9
      ("mm: kswapd: use the classzone idx that kswapd was using for
      sleeping_prematurely()").
      
      The intention is that (as expressed in today's function names), the
      value used for kswapd_shrink_zone() calls in balance_pgdat() is the same
      as for the decisions in kswapd_try_to_sleep().
      
      An unwanted side-effect of that commit was breaking the checks in
      kswapd() whether there was another kswapd_wakeup with a tighter (=lower)
      classzone_idx.  Commits 215ddd66 ("mm: vmscan: only read
      new_classzone_idx from pgdat when reclaiming successfully") and
      d2ebd0f6 ("kswapd: avoid unnecessary rebalance after an unsuccessful
      balancing") tried to fixed, but apparently introduced a bogus check that
      this patch removes.
      
      Consider zone indexes X < Y < Z, where:
      - Z is the value used for the first kswapd wakeup.
      - Y is returned as balanced_classzone_idx, which means zones with index higher
        than Y (including Z) were found to be unreclaimable.
      - X is the value used for the second kswapd wakeup
      
      The new wakeup with value X means that kswapd is now supposed to balance
      harder all zones with index <= X.  But instead, due to Y < Z, it will go
      sleep and won't read the new value X.  This is subtly wrong.
      
      The effect of this patch is that kswapd will react better in some
      situations, where e.g.  the first wakeup is for ZONE_DMA32, the second is
      for ZONE_DMA, and due to unreclaimable ZONE_NORMAL.  Before this patch,
      kswapd would go sleep instead of reclaiming ZONE_DMA harder.  I expect
      these situations are very rare, and more value is in better
      maintainability due to the removal of confusing and bogus check.
      Signed-off-by: default avatarVlastimil Babka <vbabka@suse.cz>
      Cc: Andrea Arcangeli <aarcange@redhat.com>
      Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
      Cc: Rik van Riel <riel@redhat.com>
      Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
      Cc: Mel Gorman <mgorman@techsingularity.net>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Michal Hocko <mhocko@suse.com>
      Cc: Johannes Weiner <hannes@cmpxchg.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      81c5857b
    • Joonsoo Kim's avatar
      tile: query dynamic DEBUG_PAGEALLOC setting · 21c64786
      Joonsoo Kim authored
      We can disable debug_pagealloc processing even if the code is compiled
      with CONFIG_DEBUG_PAGEALLOC.  This patch changes the code to query
      whether it is enabled or not in runtime.
      Signed-off-by: default avatarJoonsoo Kim <iamjoonsoo.kim@lge.com>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Acked-by: default avatarChris Metcalf <cmetcalf@ezchip.com>
      Cc: Christian Borntraeger <borntraeger@de.ibm.com>
      Cc: Christoph Lameter <cl@linux.com>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: Takashi Iwai <tiwai@suse.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      21c64786
    • Joonsoo Kim's avatar
      powerpc: query dynamic DEBUG_PAGEALLOC setting · e7df0d88
      Joonsoo Kim authored
      We can disable debug_pagealloc processing even if the code is compiled
      with CONFIG_DEBUG_PAGEALLOC.  This patch changes the code to query
      whether it is enabled or not in runtime.
      Signed-off-by: default avatarJoonsoo Kim <iamjoonsoo.kim@lge.com>
      Acked-by: default avatarDavid Rientjes <rientjes@google.com>
      Cc: Christian Borntraeger <borntraeger@de.ibm.com>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Christoph Lameter <cl@linux.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      e7df0d88
    • Joonsoo Kim's avatar
      sound: query dynamic DEBUG_PAGEALLOC setting · 505f6d22
      Joonsoo Kim authored
      We can disable debug_pagealloc processing even if the code is compiled
      with CONFIG_DEBUG_PAGEALLOC.  This patch changes the code to query
      whether it is enabled or not in runtime.
      
      [akpm@linux-foundation.org: export _debug_pagealloc_enabled to modules]
      Signed-off-by: default avatarJoonsoo Kim <iamjoonsoo.kim@lge.com>
      Acked-by: default avatarDavid Rientjes <rientjes@google.com>
      Acked-by: default avatarTakashi Iwai <tiwai@suse.de>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Chris Metcalf <cmetcalf@ezchip.com>
      Cc: Christian Borntraeger <borntraeger@de.ibm.com>
      Cc: Christoph Lameter <cl@linux.com>
      Cc: Pekka Enberg <penberg@kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      505f6d22
    • Joonsoo Kim's avatar
      mm/slub: query dynamic DEBUG_PAGEALLOC setting · 922d566c
      Joonsoo Kim authored
      We can disable debug_pagealloc processing even if the code is compiled
      with CONFIG_DEBUG_PAGEALLOC.  This patch changes the code to query
      whether it is enabled or not in runtime.
      
      [akpm@linux-foundation.org: clean up code, per Christian]
      Signed-off-by: default avatarJoonsoo Kim <iamjoonsoo.kim@lge.com>
      Reviewed-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Chris Metcalf <cmetcalf@ezchip.com>
      Cc: Christoph Lameter <cl@linux.com>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: Takashi Iwai <tiwai@suse.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      922d566c
    • Joonsoo Kim's avatar
      mm/vmalloc: query dynamic DEBUG_PAGEALLOC setting · f48d97f3
      Joonsoo Kim authored
      As CONFIG_DEBUG_PAGEALLOC can be enabled/disabled via kernel parameters
      we can optimize some cases by checking the enablement state.
      
      This is follow-up work for Christian's Optimize CONFIG_DEBUG_PAGEALLOC:
      
        https://lkml.org/lkml/2016/1/27/194
      
      Remaining work is to make sparc to be aware of this but it looks not
      easy for me so I skip that in this series.
      
      This patch (of 5):
      
      We can disable debug_pagealloc processing even if the code is complied
      with CONFIG_DEBUG_PAGEALLOC.  This patch changes the code to query
      whether it is enabled or not in runtime.
      
      [akpm@linux-foundation.org: update comment, per David.  Adjust comment to use 80 cols]
      Signed-off-by: default avatarJoonsoo Kim <iamjoonsoo.kim@lge.com>
      Reviewed-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
      Acked-by: default avatarDavid Rientjes <rientjes@google.com>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Takashi Iwai <tiwai@suse.com>
      Cc: Chris Metcalf <cmetcalf@ezchip.com>
      Cc: Christoph Lameter <cl@linux.com>
      Cc: Pekka Enberg <penberg@kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      f48d97f3
    • Naoya Horiguchi's avatar
      tools/vm/page-types.c: support swap entry · 0335ddd3
      Naoya Horiguchi authored
      /proc/pid/pagemap (pte_to_pagemap_entry() internally) already reports
      about swap entry, so let's make the in-kernel utility aware of it.
      Signed-off-by: default avatarNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>
      Cc: Vladimir Davydov <vdavydov@parallels.com>
      Cc: Konstantin Khlebnikov <koct9i@gmail.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      0335ddd3
    • Naoya Horiguchi's avatar
      /proc/kpageflags: return KPF_SLAB for slab tail pages · 0a71649c
      Naoya Horiguchi authored
      Currently /proc/kpageflags returns just KPF_COMPOUND_TAIL for slab tail
      pages, which is inconvenient when grasping how slab pages are
      distributed (userspace always needs to check which kind of tail pages by
      itself).  This patch sets KPF_SLAB for such pages.
      
      With this patch:
      
        $ grep Slab /proc/meminfo ; tools/vm/page-types -b slab
        Slab:              64880 kB
                     flags      page-count       MB  symbolic-flags                     long-symbolic-flags
        0x0000000000000080           16220       63  _______S__________________________________ slab
                     total           16220       63
      
      16220 pages equals to 64880 kB, so returned result is consistent with the
      global counter.
      Signed-off-by: default avatarNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>
      Reviewed-by: default avatarVladimir Davydov <vdavydov@virtuozzo.com>
      Cc: Konstantin Khlebnikov <koct9i@gmail.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      0a71649c
    • Naoya Horiguchi's avatar
      /proc/kpageflags: return KPF_BUDDY for "tail" buddy pages · 832fc1de
      Naoya Horiguchi authored
      Currently /proc/kpageflags returns nothing for "tail" buddy pages, which
      is inconvenient when grasping how free pages are distributed.  This
      patch sets KPF_BUDDY for such pages.
      
      With this patch:
      
        $ grep MemFree /proc/meminfo ; tools/vm/page-types -b buddy
        MemFree:         3134992 kB
                     flags      page-count       MB  symbolic-flags                     long-symbolic-flags
        0x0000000000000400          779272     3044  __________B_______________________________ buddy
        0x0000000000000c00            4385       17  __________BM______________________________ buddy,mmap
                     total          783657     3061
      
      783657 pages is 3134628 kB (roughly consistent with the global counter,)
      so it's OK.
      
      [akpm@linux-foundation.org: update comment, per Naoya]
      Signed-off-by: default avatarNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>
      Reviewed-by: default avatarVladimir Davydov <vdavydov@virtuozzo.com&gt;>
      Cc: Konstantin Khlebnikov <koct9i@gmail.com>
      Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      832fc1de
    • Vladimir Davydov's avatar
      mm: memcontrol: report kernel stack usage in cgroup2 memory.stat · 12580e4b
      Vladimir Davydov authored
      Show how much memory is allocated to kernel stacks.
      Signed-off-by: default avatarVladimir Davydov <vdavydov@virtuozzo.com>
      Acked-by: default avatarJohannes Weiner <hannes@cmpxchg.org>
      Cc: Michal Hocko <mhocko@kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      12580e4b
    • Vladimir Davydov's avatar
      mm: memcontrol: report slab usage in cgroup2 memory.stat · 27ee57c9
      Vladimir Davydov authored
      Show how much memory is used for storing reclaimable and unreclaimable
      in-kernel data structures allocated from slab caches.
      Signed-off-by: default avatarVladimir Davydov <vdavydov@virtuozzo.com>
      Acked-by: default avatarJohannes Weiner <hannes@cmpxchg.org>
      Cc: Michal Hocko <mhocko@kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      27ee57c9
    • Vladimir Davydov's avatar
      mm: memcontrol: make tree_{stat,events} fetch all stats · 72b54e73
      Vladimir Davydov authored
      Currently, tree_{stat,events} helpers can only get one stat index at a
      time, so when there are a lot of stats to be reported one has to call it
      over and over again (see memory_stat_show).  This is neither effective,
      nor does it look good.  Instead, let's make these helpers take a
      snapshot of all available counters.
      Signed-off-by: default avatarVladimir Davydov <vdavydov@virtuozzo.com>
      Cc: Johannes Weiner <hannes@cmpxchg.org>
      Cc: Michal Hocko <mhocko@kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      72b54e73
    • Vladimir Davydov's avatar
      mm: memcontrol: do not bypass slab charge if memcg is offline · fcff7d7e
      Vladimir Davydov authored
      Slab pages are charged in two steps.  First, an appropriate per memcg
      cache is selected (see memcg_kmem_get_cache) basing on the current
      context, then the new slab page is charged to the memory cgroup which
      the selected cache was created for (see memcg_charge_slab ->
      __memcg_kmem_charge_memcg).  It is OK to bypass kmemcg charge at step 1,
      but if step 1 succeeded and we successfully allocated a new slab page,
      step 2 must be performed, otherwise we would get a per memcg kmem cache
      which contains a slab that does not hold a reference to the memory
      cgroup owning the cache.  Since per memcg kmem caches are destroyed on
      memcg css free, this could result in freeing a cache while there are
      still active objects in it.
      
      However, currently we will bypass slab page charge if the memory cgroup
      owning the cache is offline (see __memcg_kmem_charge_memcg).  This is
      very unlikely to occur in practice, because for this to happen a process
      must be migrated to a different cgroup and the old cgroup must be
      removed while the process is in kmalloc somewhere between steps 1 and 2
      (e.g.  trying to allocate a new page).  Nevertheless, it's still better
      to eliminate such a possibility.
      Signed-off-by: default avatarVladimir Davydov <vdavydov@virtuozzo.com>
      Acked-by: default avatarJohannes Weiner <hannes@cmpxchg.org>
      Cc: Michal Hocko <mhocko@kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      fcff7d7e
    • Johannes Weiner's avatar
      mm: oom_kill: don't ignore oom score on exiting tasks · 6a618957
      Johannes Weiner authored
      When the OOM killer scans tasks and encounters a PF_EXITING one, it
      force-selects that task regardless of the score.  The problem is that if
      that task got stuck waiting for some state the allocation site is
      holding, the OOM reaper can not move on to the next best victim.
      
      Frankly, I don't even know why we check for exiting tasks in the OOM
      killer.  We've tried direct reclaim at least 15 times by the time we
      decide the system is OOM, there was plenty of time to exit and free
      memory; and a task might exit voluntarily right after we issue a kill.
      This is testing pure noise.  Remove it.
      Signed-off-by: default avatarTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
      Signed-off-by: default avatarJohannes Weiner <hannes@cmpxchg.org>
      Acked-by: default avatarMichal Hocko <mhocko@suse.com>
      Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Mel Gorman <mgorman@suse.de>
      Cc: David Rientjes <rientjes@google.com>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Hugh Dickins <hughd@google.com>
      Cc: Andrea Argangeli <andrea@kernel.org>
      Cc: Rik van Riel <riel@redhat.com>
      Cc: Sasha Levin <sasha.levin@oracle.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      6a618957
    • Joshua Hunt's avatar
      watchdog: don't run proc_watchdog_update if new value is same as old · a1ee1932
      Joshua Hunt authored
      While working on a script to restore all sysctl params before a series of
      tests I found that writing any value into the
      /proc/sys/kernel/{nmi_watchdog,soft_watchdog,watchdog,watchdog_thresh}
      causes them to call proc_watchdog_update().
      
        NMI watchdog: enabled on all CPUs, permanently consumes one hw-PMU counter.
        NMI watchdog: enabled on all CPUs, permanently consumes one hw-PMU counter.
        NMI watchdog: enabled on all CPUs, permanently consumes one hw-PMU counter.
        NMI watchdog: enabled on all CPUs, permanently consumes one hw-PMU counter.
      
      There doesn't appear to be a reason for doing this work every time a write
      occurs, so only do it when the values change.
      Signed-off-by: default avatarJosh Hunt <johunt@akamai.com>
      Acked-by: default avatarDon Zickus <dzickus@redhat.com>
      Reviewed-by: default avatarAaron Tomlin <atomlin@redhat.com>
      Cc: Ulrich Obergfell <uobergfe@redhat.com>
      Cc: <stable@vger.kernel.org>	[4.1.x+]
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      a1ee1932
    • Aaro Koskinen's avatar
      drivers/firmware/broadcom/bcm47xx_nvram.c: fix incorrect __ioread32_copy · 4c11e554
      Aaro Koskinen authored
      Commit 1f330c32 ("drivers/firmware/broadcom/bcm47xx_nvram.c: use
      __ioread32_copy() instead of open-coding") switched to use a generic
      copy function, but failed to notice that the header pointer is updated
      between the two copies, resulting in bogus data being copied in the
      latter one.  Fix by keeping the old header pointer.
      
      The patch fixes totally broken networking on WRT54GL router (both LAN and
      WLAN interfaces fail to probe).
      
      Fixes: 1f330c32 ("drivers/firmware/broadcom/bcm47xx_nvram.c: use __ioread32_copy() instead of open-coding")
      Signed-off-by: default avatarAaro Koskinen <aaro.koskinen@iki.fi>
      Reviewed-by: default avatarStephen Boyd <sboyd@codeaurora.org>
      Cc: Rafal Milecki <zajec5@gmail.com>
      Cc: Hauke Mehrtens <hauke@hauke-m.de>
      Cc: <stable@vger.kernel.org>	[4.4.x]
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      4c11e554
    • Luis R. Rodriguez's avatar
      ia64: define ioremap_uc() · b0f84ac3
      Luis R. Rodriguez authored
      All architectures now need ioremap_uc(), ia64 seems defines this already
      through its ioremap_nocache() and it already ensures it *only* uses UC.
      
      This is needed since v4.3 to complete an allyesconfig compile on ia64,
      there were others archs that needed this, and this one seems to have
      fallen through the cracks.
      Signed-off-by: default avatarLuis R. Rodriguez <mcgrof@kernel.org>
      Reported-by: default avatarkbuild test robot <fengguang.wu@intel.com>
      Acked-by: default avatarTony Luck <tony.luck@intel.com>
      Cc: <stable@vger.kernel.org>	[4.3+]
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      b0f84ac3
    • Linus Torvalds's avatar
      Merge tag 'fbdev-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux · 09fd671c
      Linus Torvalds authored
      Pull fbdev updates from Tomi Valkeinen:
      
       - Miscallaneous small fixes to various fbdev drivers
      
       - Remove fb_rotate, which was never used
      
       - pmag fb improvements
      
      * tag 'fbdev-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux: (21 commits)
        xen kconfig: don't "select INPUT_XEN_KBDDEV_FRONTEND"
        video: fbdev: sis: remove unused variable
        drivers/video: make fbdev/sunxvr2500.c explicitly non-modular
        drivers/video: make fbdev/sunxvr1000.c explicitly non-modular
        drivers/video: make fbdev/sunxvr500.c explicitly non-modular
        video: exynos: fix modular build
        fbdev: da8xx-fb: fix videomodes of lcd panels
        fbdev: kill fb_rotate
        video: fbdev: bt431: Correct cursor format control macro
        video: fbdev: pmag-ba-fb: Optimize Bt455 colormap addressing
        video: fbdev: pmag-ba-fb: Fix and rework Bt455 colormap handling
        video: fbdev: bt455: Remove unneeded colormap helpers for cursor support
        video: fbdev: pmag-aa-fb: Report video timings
        video: fbdev: pmag-aa-fb: Enable building as a module
        video: fbdev: pmag-aa-fb: Adapt to current APIs
        video: fbdev: pmag-ba-fb: Fix the lower margin size
        fbdev: sh_mobile_lcdc: Use ARCH_RENESAS
        fbdev: n411: check return value
        fbdev: exynos: fix IS_ERR_VALUE usage
        video: Use bool instead int pointer for get_opt_bool() argument
        ...
      09fd671c
    • Linus Torvalds's avatar
      Merge tag 'media/v4.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media · bace3db5
      Linus Torvalds authored
      Pull media updates from Mauro Carvalho Chehab:
       - Added support for some new video formats
       - mn88473 DVB frontend driver got promoted from staging
       - several improvements at the VSP1 driver
       - several cleanups and improvements at the Media Controller
       - added Media Controller support to snd-usb-audio.  Currently, enabled
         only for au0828-based V4L2/DVB boards
       - Several improvements at nuvoton-cir: it now supports wake up codes
       - Add media controller support to em28xx and saa7134 drivers
       - coda driver now accepts NXP distributed firmware files
       - Some legacy SoC camera drivers will be moving to staging, as they're
         outdated and nobody so far is willing to fix and convert them to use
         the current media framework
       - As usual, lots of cleanups, improvements and new board additions.
      
      * tag 'media/v4.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (381 commits)
        media: au0828 disable tuner to demod link in au0828_media_device_register()
        [media] touptek: cast char types on %x printk
        [media] touptek: don't DMA at the stack
        [media] mceusb: use %*ph for small buffer dumps
        [media] v4l: exynos4-is: Drop unneeded check when setting up fimc-lite links
        [media] v4l: vsp1: Check if an entity is a subdev with the right function
        [media] hide unused functions for !MEDIA_CONTROLLER
        [media] em28xx: fix Terratec Grabby AC97 codec detection
        [media] media: add prefixes to interface types
        [media] media: rc: nuvoton: switch attribute wakeup_data to text
        [media] v4l2-ioctl: fix YUV422P pixel format description
        [media] media: fix null pointer dereference in v4l_vb2q_enable_media_source()
        [media] v4l2-mc.h: fix yet more compiler errors
        [media] staging/media: add missing TODO files
        [media] media.h: always start with 1 for the audio entities
        [media] sound/usb: Use meaninful names for goto labels
        [media] v4l2-mc.h: fix compiler warnings
        [media] media: au0828 audio mixer isn't connected to decoder
        [media] sound/usb: Use Media Controller API to share media resources
        [media] dw2102: add support for TeVii S662
        ...
      bace3db5
    • Linus Torvalds's avatar
      Merge tag 'libnvdimm-for-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm · 8759957b
      Linus Torvalds authored
      Pull libnvdimm updates from Dan Williams:
      
       - Asynchronous address range scrub:
      
           Given the capacities of next generation persistent memory devices a
           scrub operation to find all poison may take 10s of seconds.  We
           want this scrub work to be done asynchronously with the rest of
           system initialization, so we move it out of line from the NFIT
           probing, i.e. acpi_nfit_add().
      
       - Clear poison:
      
           ACPI 6.1 introduces the ability to send "clear error" commands to
           the ACPI0012:00 device representing the root of an "nvdimm bus".
           Similar to relocating a bad block on a disk, this support clears
           media errors in response to a write.
      
       - Persistent memory resource tracking:
      
           A persistent memory range may be designated as simply "reserved" by
           platform firmware in the efi/e820 memory map.  Later when the NFIT
           driver loads it discovers that the range is "Persistent Memory".
      
           The NFIT bus driver inserts a resource to advertise that
           "persistent" attribute in the system resource tree for /proc/iomem
           and kernel-internal usages.
      
       - Miscellaneous cleanups and fixes:
      
           Workaround section misaligned pmem ranges when allocating a struct
           page memmap, fix handling of the read-only case in the ioctl path,
           and clean up block device major number allocation.
      
      * tag 'libnvdimm-for-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (26 commits)
        libnvdimm, pmem: clear poison on write
        libnvdimm, pmem: fix kmap_atomic() leak in error path
        nvdimm/btt: don't allocate unused major device number
        nvdimm/blk: don't allocate unused major device number
        pmem: don't allocate unused major device number
        ACPI: Change NFIT driver to insert new resource
        resource: Export insert_resource and remove_resource
        resource: Add remove_resource interface
        resource: Change __request_region to inherit from immediate parent
        libnvdimm, pmem: fix ia64 build, use PHYS_PFN
        nfit, libnvdimm: clear poison command support
        libnvdimm, pfn: 'resource'-address and 'size' attributes for pfn devices
        libnvdimm, pmem: adjust for section collisions with 'System RAM'
        libnvdimm, pmem: fix 'pfn' support for section-misaligned namespaces
        libnvdimm: Fix security issue with DSM IOCTL.
        libnvdimm: Clean-up access mode check.
        tools/testing/nvdimm: expand ars unit testing
        nfit: disable userspace initiated ars during scrub
        nfit: scrub and register regions in a workqueue
        nfit, libnvdimm: async region scrub workqueue
        ...
      8759957b
    • Linus Torvalds's avatar
      Merge tag 'dm-4.6-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm · 6968e6f8
      Linus Torvalds authored
      Pull device mapper updates from Mike Snitzer:
      
       - Most attention this cycle went to optimizing blk-mq request-based DM
         (dm-mq) that is used exclussively by DM multipath:
      
           - A stable fix for dm-mq that eliminates excessive context
             switching offers the biggest performance improvement (for both
             IOPs and throughput).
      
           - But more work is needed, during the next cycle, to reduce
             spinlock contention in DM multipath on large NUMA systems.
      
       - A stable fix for a NULL pointer seen when DM stats is enabled on a DM
         multipath device that must requeue an IO due to path failure.
      
       - A stable fix for DM snapshot to disallow the COW and origin devices
         from being identical.  This amounts to graceful failure in the face
         of userspace error because these devices shouldn't ever be identical.
      
       - Stable fixes for DM cache and DM thin provisioning to address crashes
         seen if/when their respective metadata device experiences failures
         that cause the transition to 'fail_io' mode.
      
       - The DM cache 'mq' policy is now an alias for the 'smq' policy.  The
         'smq' policy proved to be consistently better than 'mq'.  As such
         'mq', with all its complex user-facing tunables, has been eliminated.
      
       - Improve DM thin provisioning to consistently return -ENOSPC once the
         thin-pool's data volume is out of space.
      
       - Improve DM core to properly handle error propagation if
         bio_integrity_clone() fails in clone_bio().
      
       - Other small cleanups and improvements to DM core.
      
      * tag 'dm-4.6-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (41 commits)
        dm: fix rq_end_stats() NULL pointer in dm_requeue_original_request()
        dm thin: consistently return -ENOSPC if pool has run out of data space
        dm cache: bump the target version
        dm cache: make sure every metadata function checks fail_io
        dm: add missing newline between DM_DEBUG_BLOCK_STACK_TRACING and DM_BUFIO
        dm cache policy smq: clarify that mq registration failure was for 'mq'
        dm: return error if bio_integrity_clone() fails in clone_bio()
        dm thin metadata: don't issue prefetches if a transaction abort has failed
        dm snapshot: disallow the COW and origin devices from being identical
        dm cache: make the 'mq' policy an alias for 'smq'
        dm: drop unnecessary assignment of md->queue
        dm: reorder 'struct mapped_device' members to fix alignment and holes
        dm: remove dummy definition of 'struct dm_table'
        dm: add 'dm_numa_node' module parameter
        dm thin metadata: remove needless newline from subtree_dec() DMERR message
        dm mpath: cleanup reinstate_path() et al based on code review
        dm mpath: remove __pgpath_busy forward declaration, rename to pgpath_busy
        dm mpath: switch from 'unsigned' to 'bool' for flags where appropriate
        dm round robin: use percpu 'repeat_count' and 'current_path'
        dm path selector: remove 'repeat_count' return from .select_path hook
        ...
      6968e6f8
    • Linus Torvalds's avatar
      Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · cae8da04
      Linus Torvalds authored
      Pull SCSI updates from James Bottomley:
       "This pull includes driver updates from the usual suspects (stex, hpsa,
        ncr5380, scsi_dh, qla2xxx, be2iscsi, hisi_sas, cxlflash, aacraid,
        mp3sas, megaraid_sas, ibmvscsi, ufs) plus an assortment of
        miscellaneous fixes.
      
        The major user visible change of this pull is that we've moved from
        monotonically increasing host number to an ida allocated one (meaning
        the numbers get re-used) because someone managed to wrap the count in
        an iscsi system.  We don't believe there will be any adverse
        consequences of this"
      
      * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (230 commits)
        MAINTAINERS: use new email address for James Bottomley
        mpt3sas: Remove unnecessary synchronize_irq() before free_irq()
        sg: fix dxferp in from_to case
        cxlflash: Increase cmd_per_lun for better throughput
        cxlflash: Fix to avoid unnecessary scan with internal LUNs
        cxlflash: Reorder user context initialization
        cxlflash: Simplify attach path error cleanup
        cxlflash: Split out context initialization
        cxlflash: Unmap problem state area before detaching master context
        cxlflash: Simplify PCI registration
        scsi: storvsc: fix SRB_STATUS_ABORTED handling
        be2iscsi: set the boot_kset pointer to NULL in case of failure
        sd: Fix discard granularity when LBPRZ=1
        be2iscsi: Remove unnecessary synchronize_irq() before free_irq()
        scsi_sysfs: call 'device_add' after attaching device handler
        scsi_dh_emc: update 'access_state' field
        scsi_dh_rdac: update 'access_state' field
        scsi_dh_alua: update 'access_state' field
        scsi_dh_alua: use common definitions for ALUA state
        scsi: Add 'access_state' and 'preferred_path' attribute
        ...
      cae8da04
    • Linus Torvalds's avatar
      Merge branch 'stable/for-linus-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft · 7bb7a748
      Linus Torvalds authored
      Pull iscsi_ibft update from Konrad Rzeszutek Wilk:
       "A simple patch that had been rattling around in SuSE repo"
      
      * 'stable/for-linus-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft:
        iscsi_ibft: Add prefix-len attr and display netmask
      7bb7a748
  2. 16 Mar, 2016 15 commits
    • Linus Torvalds's avatar
      Merge tag 'pci-v4.6-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci · 63e30271
      Linus Torvalds authored
      Pull PCI updates from Bjorn Helgaas:
       "PCI changes for v4.6:
      
        Enumeration:
         - Disable IO/MEM decoding for devices with non-compliant BARs (Bjorn Helgaas)
         - Mark Broadwell-EP Home Agent & PCU as having non-compliant BARs (Bjorn Helgaas
      
        Resource management:
         - Mark shadow copy of VGA ROM as IORESOURCE_PCI_FIXED (Bjorn Helgaas)
         - Don't assign or reassign immutable resources (Bjorn Helgaas)
         - Don't enable/disable ROM BAR if we're using a RAM shadow copy (Bjorn Helgaas)
         - Set ROM shadow location in arch code, not in PCI core (Bjorn Helgaas)
         - Remove arch-specific IORESOURCE_ROM_SHADOW size from sysfs (Bjorn Helgaas)
         - ia64: Use ioremap() instead of open-coded equivalent (Bjorn Helgaas)
         - ia64: Keep CPU physical (not virtual) addresses in shadow ROM resource (Bjorn Helgaas)
         - MIPS: Keep CPU physical (not virtual) addresses in shadow ROM resource (Bjorn Helgaas)
         - Remove unused IORESOURCE_ROM_COPY and IORESOURCE_ROM_BIOS_COPY (Bjorn Helgaas)
         - Don't leak memory if sysfs_create_bin_file() fails (Bjorn Helgaas)
         - rcar: Remove PCI_PROBE_ONLY handling (Lorenzo Pieralisi)
         - designware: Remove PCI_PROBE_ONLY handling (Lorenzo Pieralisi)
      
        Virtualization:
         - Wait for up to 1000ms after FLR reset (Alex Williamson)
         - Support SR-IOV on any function type (Kelly Zytaruk)
         - Add ACS quirk for all Cavium devices (Manish Jaggi)
      
        AER:
         - Rename pci_ops_aer to aer_inj_pci_ops (Bjorn Helgaas)
         - Restore pci_ops pointer while calling original pci_ops (David Daney)
         - Fix aer_inject error codes (Jean Delvare)
         - Use dev_warn() in aer_inject (Jean Delvare)
         - Log actual error causes in aer_inject (Jean Delvare)
         - Log aer_inject error injections (Jean Delvare)
      
        VPD:
         - Prevent VPD access for buggy devices (Babu Moger)
         - Move pci_read_vpd() and pci_write_vpd() close to other VPD code (Bjorn Helgaas)
         - Move pci_vpd_release() from header file to pci/access.c (Bjorn Helgaas)
         - Remove struct pci_vpd_ops.release function pointer (Bjorn Helgaas)
         - Rename VPD symbols to remove unnecessary "pci22" (Bjorn Helgaas)
         - Fold struct pci_vpd_pci22 into struct pci_vpd (Bjorn Helgaas)
         - Sleep rather than busy-wait for VPD access completion (Bjorn Helgaas)
         - Update VPD definitions (Hannes Reinecke)
         - Allow access to VPD attributes with size 0 (Hannes Reinecke)
         - Determine actual VPD size on first access (Hannes Reinecke)
      
        Generic host bridge driver:
         - Move structure definitions to separate header file (David Daney)
         - Add pci_host_common_probe(), based on gen_pci_probe() (David Daney)
         - Expose pci_host_common_probe() for use by other drivers (David Daney)
      
        Altera host bridge driver:
         - Fix altera_pcie_link_is_up() (Ley Foon Tan)
      
        Cavium ThunderX host bridge driver:
         - Add PCIe host driver for ThunderX processors (David Daney)
         - Add driver for ThunderX-pass{1,2} on-chip devices (David Daney)
      
        Freescale i.MX6 host bridge driver:
         - Add DT bindings to configure PHY Tx driver settings (Justin Waters)
         - Move imx6_pcie_reset_phy() near other PHY handling functions (Lucas Stach)
         - Move PHY reset into imx6_pcie_establish_link() (Lucas Stach)
         - Remove broken Gen2 workaround (Lucas Stach)
         - Move link up check into imx6_pcie_wait_for_link() (Lucas Stach)
      
        Freescale Layerscape host bridge driver:
         - Add "fsl,ls2085a-pcie" compatible ID (Yang Shi)
      
        Intel VMD host bridge driver:
         - Attach VMD resources to parent domain's resource tree (Jon Derrick)
         - Set bus resource start to 0 (Keith Busch)
      
        Microsoft Hyper-V host bridge driver:
         - Add fwnode_handle to x86 pci_sysdata (Jake Oshins)
         - Look up IRQ domain by fwnode_handle (Jake Oshins)
         - Add paravirtual PCI front-end for Microsoft Hyper-V VMs (Jake Oshins)
      
        NVIDIA Tegra host bridge driver:
         - Add pci_ops.{add,remove}_bus() callbacks (Thierry Reding)
         - Implement ->{add,remove}_bus() callbacks (Thierry Reding)
         - Remove unused struct tegra_pcie.num_ports field (Thierry Reding)
         - Track bus -> CPU mapping (Thierry Reding)
         - Remove misleading PHYS_OFFSET (Thierry Reding)
      
        Renesas R-Car host bridge driver:
         - Depend on ARCH_RENESAS, not ARCH_SHMOBILE (Simon Horman)
      
        Synopsys DesignWare host bridge driver:
         - ARC: Add PCI support (Joao Pinto)
         - Add generic dw_pcie_wait_for_link() (Joao Pinto)
         - Add default link up check if sub-driver doesn't override (Joao Pinto)
         - Add driver for prototyping kits based on ARC SDP (Joao Pinto)
      
        TI Keystone host bridge driver:
         - Defer probing if devm_phy_get() returns -EPROBE_DEFER (Shawn Lin)
      
        Xilinx AXI host bridge driver:
         - Use of_pci_get_host_bridge_resources() to parse DT (Bharat Kumar Gogada)
         - Remove dependency on ARM-specific struct hw_pci (Bharat Kumar Gogada)
         - Don't call pci_fixup_irqs() on Microblaze (Bharat Kumar Gogada)
         - Update Zynq binding with Microblaze node (Bharat Kumar Gogada)
         - microblaze: Support generic Xilinx AXI PCIe Host Bridge IP driver (Bharat Kumar Gogada)
      
        Xilinx NWL host bridge driver:
         - Add support for Xilinx NWL PCIe Host Controller (Bharat Kumar Gogada)
      
        Miscellaneous:
         - Check device_attach() return value always (Bjorn Helgaas)
         - Move pci_set_flags() from asm-generic/pci-bridge.h to linux/pci.h (Bjorn Helgaas)
         - Remove includes of empty asm-generic/pci-bridge.h (Bjorn Helgaas)
         - ARM64: Remove generated include of asm-generic/pci-bridge.h (Bjorn Helgaas)
         - Remove empty asm-generic/pci-bridge.h (Bjorn Helgaas)
         - Remove includes of asm/pci-bridge.h (Bjorn Helgaas)
         - Consolidate PCI DMA constants and interfaces in linux/pci-dma-compat.h (Bjorn Helgaas)
         - unicore32: Remove unused HAVE_ARCH_PCI_SET_DMA_MASK definition (Bjorn Helgaas)
         - Cleanup pci/pcie/Kconfig whitespace (Andreas Ziegler)
         - Include pci/hotplug Kconfig directly from pci/Kconfig (Bjorn Helgaas)
         - Include pci/pcie/Kconfig directly from pci/Kconfig (Bogicevic Sasa)
         - frv: Remove stray pci_{alloc,free}_consistent() declaration (Christoph Hellwig)
         - Move pci_dma_* helpers to common code (Christoph Hellwig)
         - Add PCI_CLASS_SERIAL_USB_DEVICE definition (Heikki Krogerus)
         - Add QEMU top-level IDs for (sub)vendor & device (Robin H. Johnson)
         - Fix broken URL for Dell biosdevname (Naga Venkata Sai Indubhaskar Jupudi)"
      
      * tag 'pci-v4.6-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (94 commits)
        PCI: Add PCI_CLASS_SERIAL_USB_DEVICE definition
        PCI: designware: Add driver for prototyping kits based on ARC SDP
        PCI: designware: Add default link up check if sub-driver doesn't override
        PCI: designware: Add generic dw_pcie_wait_for_link()
        PCI: Cleanup pci/pcie/Kconfig whitespace
        PCI: Simplify pci_create_attr() control flow
        PCI: Don't leak memory if sysfs_create_bin_file() fails
        PCI: Simplify sysfs ROM cleanup
        PCI: Remove unused IORESOURCE_ROM_COPY and IORESOURCE_ROM_BIOS_COPY
        MIPS: Loongson 3: Keep CPU physical (not virtual) addresses in shadow ROM resource
        MIPS: Loongson 3: Use temporary struct resource * to avoid repetition
        ia64/PCI: Keep CPU physical (not virtual) addresses in shadow ROM resource
        ia64/PCI: Use ioremap() instead of open-coded equivalent
        ia64/PCI: Use temporary struct resource * to avoid repetition
        PCI: Clean up pci_map_rom() whitespace
        PCI: Remove arch-specific IORESOURCE_ROM_SHADOW size from sysfs
        PCI: thunder: Add driver for ThunderX-pass{1,2} on-chip devices
        PCI: thunder: Add PCIe host driver for ThunderX processors
        PCI: generic: Expose pci_host_common_probe() for use by other drivers
        PCI: generic: Add pci_host_common_probe(), based on gen_pci_probe()
        ...
      63e30271
    • Linus Torvalds's avatar
      Merge tag 'pm+acpi-4.6-rc1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 277edbab
      Linus Torvalds authored
      Pull power management and ACPI updates from Rafael Wysocki:
       "This time the majority of changes go into cpufreq and they are
        significant.
      
        First off, the way CPU frequency updates are triggered is different
        now.  Instead of having to set up and manage a deferrable timer for
        each CPU in the system to evaluate and possibly change its frequency
        periodically, cpufreq governors set up callbacks to be invoked by the
        scheduler on a regular basis (basically on utilization updates).  The
        "old" governors, "ondemand" and "conservative", still do all of their
        work in process context (although that is triggered by the scheduler
        now), but intel_pstate does it all in the callback invoked by the
        scheduler with no need for any additional asynchronous processing.
      
        Of course, this eliminates the overhead related to the management of
        all those timers, but also it allows the cpufreq governor code to be
        simplified quite a bit.  On top of that, the common code and data
        structures used by the "ondemand" and "conservative" governors are
        cleaned up and made more straightforward and some long-standing and
        quite annoying problems are addressed.  In particular, the handling of
        governor sysfs attributes is modified and the related locking becomes
        more fine grained which allows some concurrency problems to be avoided
        (particularly deadlocks with the core cpufreq code).
      
        In principle, the new mechanism for triggering frequency updates
        allows utilization information to be passed from the scheduler to
        cpufreq.  Although the current code doesn't make use of it, in the
        works is a new cpufreq governor that will make decisions based on the
        scheduler's utilization data.  That should allow the scheduler and
        cpufreq to work more closely together in the long run.
      
        In addition to the core and governor changes, cpufreq drivers are
        updated too.  Fixes and optimizations go into intel_pstate, the
        cpufreq-dt driver is updated on top of some modification in the
        Operating Performance Points (OPP) framework and there are fixes and
        other updates in the powernv cpufreq driver.
      
        Apart from the cpufreq updates there is some new ACPICA material,
        including a fix for a problem introduced by previous ACPICA updates,
        and some less significant changes in the ACPI code, like CPPC code
        optimizations, ACPI processor driver cleanups and support for loading
        ACPI tables from initrd.
      
        Also updated are the generic power domains framework, the Intel RAPL
        power capping driver and the turbostat utility and we have a bunch of
        traditional assorted fixes and cleanups.
      
        Specifics:
      
         - Redesign of cpufreq governors and the intel_pstate driver to make
           them use callbacks invoked by the scheduler to trigger CPU
           frequency evaluation instead of using per-CPU deferrable timers for
           that purpose (Rafael Wysocki).
      
         - Reorganization and cleanup of cpufreq governor code to make it more
           straightforward and fix some concurrency problems in it (Rafael
           Wysocki, Viresh Kumar).
      
         - Cleanup and improvements of locking in the cpufreq core (Viresh
           Kumar).
      
         - Assorted cleanups in the cpufreq core (Rafael Wysocki, Viresh
           Kumar, Eric Biggers).
      
         - intel_pstate driver updates including fixes, optimizations and a
           modification to make it enable enable hardware-coordinated P-state
           selection (HWP) by default if supported by the processor (Philippe
           Longepe, Srinivas Pandruvada, Rafael Wysocki, Viresh Kumar, Felipe
           Franciosi).
      
         - Operating Performance Points (OPP) framework updates to improve its
           handling of voltage regulators and device clocks and updates of the
           cpufreq-dt driver on top of that (Viresh Kumar, Jon Hunter).
      
         - Updates of the powernv cpufreq driver to fix initialization and
           cleanup problems in it and correct its worker thread handling with
           respect to CPU offline, new powernv_throttle tracepoint (Shilpasri
           Bhat).
      
         - ACPI cpufreq driver optimization and cleanup (Rafael Wysocki).
      
         - ACPICA updates including one fix for a regression introduced by
           previos changes in the ACPICA code (Bob Moore, Lv Zheng, David Box,
           Colin Ian King).
      
         - Support for installing ACPI tables from initrd (Lv Zheng).
      
         - Optimizations of the ACPI CPPC code (Prashanth Prakash, Ashwin
           Chaugule).
      
         - Support for _HID(ACPI0010) devices (ACPI processor containers) and
           ACPI processor driver cleanups (Sudeep Holla).
      
         - Support for ACPI-based enumeration of the AMBA bus (Graeme Gregory,
           Aleksey Makarov).
      
         - Modification of the ACPI PCI IRQ management code to make it treat
           255 in the Interrupt Line register as "not connected" on x86 (as
           per the specification) and avoid attempts to use that value as a
           valid interrupt vector (Chen Fan).
      
         - ACPI APEI fixes related to resource leaks (Josh Hunt).
      
         - Removal of modularity from a few ACPI drivers (BGRT, GHES,
           intel_pmic_crc) that cannot be built as modules in practice (Paul
           Gortmaker).
      
         - PNP framework update to make it treat ACPI_RESOURCE_TYPE_SERIAL_BUS
           as a valid resource type (Harb Abdulhamid).
      
         - New device ID (future AMD I2C controller) in the ACPI driver for
           AMD SoCs (APD) and in the designware I2C driver (Xiangliang Yu).
      
         - Assorted ACPI cleanups (Colin Ian King, Kaiyen Chang, Oleg Drokin).
      
         - cpuidle menu governor optimization to avoid a square root
           computation in it (Rasmus Villemoes).
      
         - Fix for potential use-after-free in the generic device properties
           framework (Heikki Krogerus).
      
         - Updates of the generic power domains (genpd) framework including
           support for multiple power states of a domain, fixes and debugfs
           output improvements (Axel Haslam, Jon Hunter, Laurent Pinchart,
           Geert Uytterhoeven).
      
         - Intel RAPL power capping driver updates to reduce IPI overhead in
           it (Jacob Pan).
      
         - System suspend/hibernation code cleanups (Eric Biggers, Saurabh
           Sengar).
      
         - Year 2038 fix for the process freezer (Abhilash Jindal).
      
         - turbostat utility updates including new features (decoding of more
           registers and CPUID fields, sub-second intervals support, GFX MHz
           and RC6 printout, --out command line option), fixes (syscall jitter
           detection and workaround, reductioin of the number of syscalls
           made, fixes related to Xeon x200 processors, compiler warning
           fixes) and cleanups (Len Brown, Hubert Chrzaniuk, Chen Yu)"
      
      * tag 'pm+acpi-4.6-rc1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (182 commits)
        tools/power turbostat: bugfix: TDP MSRs print bits fixing
        tools/power turbostat: correct output for MSR_NHM_SNB_PKG_CST_CFG_CTL dump
        tools/power turbostat: call __cpuid() instead of __get_cpuid()
        tools/power turbostat: indicate SMX and SGX support
        tools/power turbostat: detect and work around syscall jitter
        tools/power turbostat: show GFX%rc6
        tools/power turbostat: show GFXMHz
        tools/power turbostat: show IRQs per CPU
        tools/power turbostat: make fewer systems calls
        tools/power turbostat: fix compiler warnings
        tools/power turbostat: add --out option for saving output in a file
        tools/power turbostat: re-name "%Busy" field to "Busy%"
        tools/power turbostat: Intel Xeon x200: fix turbo-ratio decoding
        tools/power turbostat: Intel Xeon x200: fix erroneous bclk value
        tools/power turbostat: allow sub-sec intervals
        ACPI / APEI: ERST: Fixed leaked resources in erst_init
        ACPI / APEI: Fix leaked resources
        intel_pstate: Do not skip samples partially
        intel_pstate: Remove freq calculation from intel_pstate_calc_busy()
        intel_pstate: Move intel_pstate_calc_busy() into get_target_pstate_use_performance()
        ...
      277edbab
    • Linus Torvalds's avatar
      Merge branch 'akpm' (patches from Andrew) · 271ecc52
      Linus Torvalds authored
      Merge first patch-bomb from Andrew Morton:
      
       - some misc things
      
       - ofs2 updates
      
       - about half of MM
      
       - checkpatch updates
      
       - autofs4 update
      
      * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (120 commits)
        autofs4: fix string.h include in auto_dev-ioctl.h
        autofs4: use pr_xxx() macros directly for logging
        autofs4: change log print macros to not insert newline
        autofs4: make autofs log prints consistent
        autofs4: fix some white space errors
        autofs4: fix invalid ioctl return in autofs4_root_ioctl_unlocked()
        autofs4: fix coding style line length in autofs4_wait()
        autofs4: fix coding style problem in autofs4_get_set_timeout()
        autofs4: coding style fixes
        autofs: show pipe inode in mount options
        kallsyms: add support for relative offsets in kallsyms address table
        kallsyms: don't overload absolute symbol type for percpu symbols
        x86: kallsyms: disable absolute percpu symbols on !SMP
        checkpatch: fix another left brace warning
        checkpatch: improve UNSPECIFIED_INT test for bare signed/unsigned uses
        checkpatch: warn on bare unsigned or signed declarations without int
        checkpatch: exclude asm volatile from complex macro check
        mm: memcontrol: drop unnecessary lru locking from mem_cgroup_migrate()
        mm: migrate: consolidate mem_cgroup_migrate() calls
        mm/compaction: speed up pageblock_pfn_to_page() when zone is contiguous
        ...
      271ecc52
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k · aa6865d8
      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: Fix misspellings in comments.
        m68k: Use conventional function parameters for do_sigreturn
        zorro: Use kobj_to_dev()
      aa6865d8
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux · 72aafdf0
      Linus Torvalds authored
      Pull s390 updates from Martin Schwidefsky:
      
       - Add the CPU id for the new z13s machine
      
       - Add a s390 specific XOR template for RAID-5 checksumming based on the
         XC instruction.  Remove all other alternatives, XC is always faster
      
       - The merge of our four different stack tracers into a single one
      
       - Tidy up the code related to page tables, several large inline
         functions are now out-of-line.  Bloat-o-meter reports ~11K text size
         reduction
      
       - A binary interface for the priviledged CLP instruction to retrieve
         the hardware view of the installed PCI functions
      
       - Improvements for the dasd format code
      
       - Bug fixes and cleanups
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (31 commits)
        s390/pci: enforce fmb page boundary rule
        s390: fix floating pointer register corruption (again)
        s390/cpumf: add missing lpp magic initialization
        s390: Fix misspellings in comments
        s390/mm: split arch/s390/mm/pgtable.c
        s390/mm: uninline pmdp_xxx functions from pgtable.h
        s390/mm: uninline ptep_xxx functions from pgtable.h
        s390/pci: add ioctl interface for CLP
        s390: Use pr_warn instead of pr_warning
        s390/dasd: remove casts to dasd_*_private
        s390/dasd: Refactor dasd format functions
        s390/dasd: Simplify code in format logic
        s390/dasd: Improve dasd format code
        s390/percpu: remove this_cpu_cmpxchg_double_4
        s390/cpumf: Improve guest detection heuristics
        s390/fault: merge report_user_fault implementations
        s390/dis: use correct escape sequence for '%' character
        s390/kvm: simplify set_guest_storage_key
        s390/oprofile: add z13/z13s model numbers
        s390: add z13s model number to z13 elf platform
        ...
      72aafdf0
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32 · 1c8e85b1
      Linus Torvalds authored
      Pull AVR32 updates from Hans-Christian Egtvedt.
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32:
        avr32: fix asm operand constraint in cmpxchg()
        avr32: wire up copy_file_range syscall
      1c8e85b1
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm · 10dc3747
      Linus Torvalds authored
      Pull KVM updates from Paolo Bonzini:
       "One of the largest releases for KVM...  Hardly any generic
        changes, but lots of architecture-specific updates.
      
        ARM:
         - VHE support so that we can run the kernel at EL2 on ARMv8.1 systems
         - PMU support for guests
         - 32bit world switch rewritten in C
         - various optimizations to the vgic save/restore code.
      
        PPC:
         - enabled KVM-VFIO integration ("VFIO device")
         - optimizations to speed up IPIs between vcpus
         - in-kernel handling of IOMMU hypercalls
         - support for dynamic DMA windows (DDW).
      
        s390:
         - provide the floating point registers via sync regs;
         - separated instruction vs.  data accesses
         - dirty log improvements for huge guests
         - bugfixes and documentation improvements.
      
        x86:
         - Hyper-V VMBus hypercall userspace exit
         - alternative implementation of lowest-priority interrupts using
           vector hashing (for better VT-d posted interrupt support)
         - fixed guest debugging with nested virtualizations
         - improved interrupt tracking in the in-kernel IOAPIC
         - generic infrastructure for tracking writes to guest
           memory - currently its only use is to speedup the legacy shadow
           paging (pre-EPT) case, but in the future it will be used for
           virtual GPUs as well
         - much cleanup (LAPIC, kvmclock, MMU, PIT), including ubsan fixes"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (217 commits)
        KVM: x86: remove eager_fpu field of struct kvm_vcpu_arch
        KVM: x86: disable MPX if host did not enable MPX XSAVE features
        arm64: KVM: vgic-v3: Only wipe LRs on vcpu exit
        arm64: KVM: vgic-v3: Reset LRs at boot time
        arm64: KVM: vgic-v3: Do not save an LR known to be empty
        arm64: KVM: vgic-v3: Save maintenance interrupt state only if required
        arm64: KVM: vgic-v3: Avoid accessing ICH registers
        KVM: arm/arm64: vgic-v2: Make GICD_SGIR quicker to hit
        KVM: arm/arm64: vgic-v2: Only wipe LRs on vcpu exit
        KVM: arm/arm64: vgic-v2: Reset LRs at boot time
        KVM: arm/arm64: vgic-v2: Do not save an LR known to be empty
        KVM: arm/arm64: vgic-v2: Move GICH_ELRSR saving to its own function
        KVM: arm/arm64: vgic-v2: Save maintenance interrupt state only if required
        KVM: arm/arm64: vgic-v2: Avoid accessing GICH registers
        KVM: s390: allocate only one DMA page per VM
        KVM: s390: enable STFLE interpretation only if enabled for the guest
        KVM: s390: wake up when the VCPU cpu timer expires
        KVM: s390: step the VCPU timer while in enabled wait
        KVM: s390: protect VCPU cpu timer with a seqcount
        KVM: s390: step VCPU cpu timer during kvm_run ioctl
        ...
      10dc3747
    • Linus Torvalds's avatar
      Merge tag 'edac_for_4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp · 047486d8
      Linus Torvalds authored
      Pull EDAC updates from Borislav Petkov:
      
       - Altera: L2 cache and On-Chip RAM support (Thor Thayer).
      
       - EDAC: Workqueue handling cleanups (Borislav Petkov).
      
       - Xgene: Register bus error handling (Loc Ho).
      
       - Misc small fixes.
      
      * tag 'edac_for_4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
        ARM: socfpga: Enable OCRAM ECC on startup
        ARM: socfpga: Enable L2 cache ECC on startup
        ARM: dts: Add Altera L2 Cache and OCRAM EDAC entries
        EDAC, altera: Add Altera L2 cache and OCRAM support
        EDAC: Use edac_debugfs_remove_recursive() in edac_debugfs_exit()
        EDAC, mpc85xx: Silence unused variable warning
        EDAC: Cleanup/sync workqueue functions
        EDAC: Kill workqueue setup/teardown functions
        EDAC: Balance workqueue setup and teardown
        arm64: Update the APM X-Gene EDAC node with the RB register resource
        EDAC, xgene: Add missing SoC register bus error handling
        Documentation, EDAC: Update xgene binding for missing register bus
        EDAC, amd64_edac: Shift wrapping issue in f1x_get_norm_dct_addr()
      047486d8
    • Linus Torvalds's avatar
      Merge tag 'leds_for_4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds · 9256d5a3
      Linus Torvalds authored
      Pull LED updates from Jacek Anaszewski:
       "LED core improvements:
         - Fix misleading comment after workqueue removal from drivers
         - Avoid error message when a USB LED device is unplugged
         - Add helpers for calling brightness_set(_blocking)
      
        LED triggers:
         - Simplify led_trigger_store by using sysfs_streq()
      
        LED class drivers improvements:
         - Improve wording and formatting in a comment: lp3944
         - Fix return value check in create_gpio_led(): leds-gpio
         - Use GPIOF_OUT_INIT_LOW instead of hardcoded zero: leds-gpio
         - Use devm_led_classdev_register(): leds-lm3533, leds-lm3533,
           leds-lp8788, leds-wm831x-status, leds-s3c24xx, leds-s3c24xx,
           leds-max8997.
      
        New LED class driver:
         - Add driver for the ISSI IS31FL32xx family of LED controllers.
      
        Device Tree documentation:
         - of: Add vendor prefixes for Integrated Silicon Solutions Inc.
           (issi) and Si-En Technology (si-en).
         - DT: Add common bindings for Si-En Technology SN3216/18 and
           IS31FL32xx family of LED controllers, since they seem to be the
           same hardware, just rebranded"
      
      * tag 'leds_for_4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
        leds: triggers: simplify led_trigger_store
        leds: max8997: Use devm_led_classdev_register
        leds: da903x: Use devm_led_classdev_register
        leds: s3c24xx: Use devm_led_classdev_register
        leds: wm831x-status: Use devm_led_classdev_register
        leds: lp8788: Use devm_led_classdev_register
        leds: 88pm860x: Use devm_led_classdev_register
        leds: Add SN3218 and SN3216 support to the IS31FL32XX driver
        of: Add vendor prefix for Si-En Technology
        leds: Add driver for the ISSI IS31FL32xx family of LED controllers
        DT: leds: Add binding for the ISSI IS31FL32xx family of LED controllers
        DT: Add vendor prefix for Integrated Silicon Solutions Inc.
        leds: lm3533: Use devm_led_classdev_register
        leds: gpio: Use GPIOF_OUT_INIT_LOW instead of hardcoded zero
        leds: core: add helpers for calling brightness_set(_blocking)
        leds: leds-gpio: Fix return value check in create_gpio_led()
        leds: lp3944: improve wording and formatting in a comment
        leds: core: avoid error message when a USB LED device is unplugged
        leds: core: fix misleading comment after workqueue removal from drivers
      9256d5a3
    • Linus Torvalds's avatar
      Merge tag 'rtc-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux · 13f6f62f
      Linus Torvalds authored
      Pull RTC updates from Alexandre Belloni:
       "Core:
         - New sysfs interface to set and read clock offset
         - Drivers can now be both I2C and SPI (see pcf2127 and ds3232)
      
        New drivers:
         - Alphascale ASM9260
         - Epson RX6110SA
         - Maxim max20024 and max77620 (in max77686)
         - Microchip PIC32
         - NXP pcf2129 (in pcf2127)
      
        Subsystem wide cleanups:
         - remove IRQF_EARLY_RESUME when unecessary
      
        Drivers:
         - ds1307: clock output, temperature sensor and wakeup-source support
         - ds1685: actually spin forever in poweroff error path
         - ds3232: many cleanups
         - ds3234: merged in ds3232
         - hym8563: fix invalid year calculation
         - max77686: many cleanups
         - max77802 merged in max77686
         - pcf2123: cleanups and offset support
         - pcf85063: cleanups
         - pcf8523: propely handle oscillator stop bit
         - rv3029: many cleanups, trickle charger and temperature sensor support
         - rv8803: convert spin_lock to mutex_lock
         - rx8025: many fixes
         - vr41xx: restore alarm_irq_enable"
      
      * tag 'rtc-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (86 commits)
        rtc: pcf2127: add pcf2129 device id
        rtc: pcf2127: add support for spi interface
        rtc: pcf2127: convert to use regmap
        rtc: rv3029: Add thermometer hwmon support
        rtc: rv3029: Add update_bits helper for eeprom access
        rtc: ds1685: actually spin forever in poweroff error path
        rtc: hym8563: fix invalid year calculation
        rtc: ds3232: use rtc->ops_lock to protect alarm operations
        rtc: ds3232: fix issue when irq is shared several devices
        rtc: ds3232: remove unused UIE code
        rtc: ds3232: add register access error checks
        rtc: ds3232: fix read on /dev/rtc after RTC_AIE_ON
        rtc: merge ds3232 and ds3234
        rtc: ds3232: convert to use regmap
        rtc: pxa: fix Kconfig indentation
        rtc: rv3029: Add device tree property for trickle charger
        rtc: rv3029: Add functions for EEPROM access
        rtc: rv3029: Add i2c register update-bits helper
        rtc: rv3029: Add missing register definitions
        rtc: rv3029: Add "rv3029" I2C device id
        ...
      13f6f62f
    • Linus Torvalds's avatar
      Merge tag 'hwmon-for-linus-v4.6' of... · f0718cea
      Linus Torvalds authored
      Merge tag 'hwmon-for-linus-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
      
      Pull hwmon updates from Guenter Roeck:
       - New drivers for NSA320 and LTC2990
       - Added support for ADM1278 to adm1275 driver
       - Added support for ncpXXxh103 to ntc_thermistor driver
       - Renamed vexpress hwmon implementation
       - Minor cleanups and improvements
      
      * tag 'hwmon-for-linus-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
        hwmon: Create an NSA320 hardware monitoring driver
        hwmon: Define binding for the nsa320-hwmon driver
        hwmon: (adm1275) Add support for ADM1278
        hwmon: (ntc_thermistor) Add support for ncpXXxh103
        Doc: hwmon: Fix typo "montoring" in hwmon
        ARM: dts: vfxxx: Add iio_hwmon node for ADC temperature channel
        ARM: dts: Change iio_hwmon nodes to use hypen in node names
        hwmon: (iio_hwmon) Allow the driver to accept hypen in device tree node names
        hwmon: Add LTC2990 sensor driver
        hwmon: (vexpress) rename vexpress hwmon implementation
      f0718cea
    • Linus Torvalds's avatar
      Merge tag 'regulator-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator · 555f8160
      Linus Torvalds authored
      Pull regulator updates from Mark Brown:
       "This has been an extremely quiet release for the regulator API, aside
        from bugfixes and small enhancements the only thing that really stands
        out are the new drivers for Action Semiconductors ACT8945A, HiSilicon
        HI665x, and the Maxim MAX20024 and MAX77620"
      
      * tag 'regulator-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (46 commits)
        regulator: pwm: Add support to have multiple instance of pwm regulator
        regulator: pwm: Fix calculation of voltage-to-duty cycle
        regulator: of: Use of_property_read_u32() for reading min/max
        regulator: pv88060: fix incorrect clear of event register
        regulator: pv88090: fix incorrect clear of event register
        regulator: max77620: Add support to configure active-discharge
        regulator: core: Add support for active-discharge configuration
        regulator: helper: Add helper to configure active-discharge using regmap
        regulator: core: Add support for active-discharge configuration
        regulator: DT: Add DT property for active-discharge configuration
        regulator: act8865: Specify fixed voltage of 3.3V for ACT8600's REG9
        regulator: act8865: Rename platform_data field to init_data
        regulator: act8865: Remove "static" from local variable
        ASoC: cs4271: add regulator consumer support
        regulator: max77620: Remove duplicate module alias
        regulator: max77620: Eliminate duplicate code
        regulator: max77620: Remove unused fields
        regulator: core: fix crash in error path of regulator_register
        regulator: core: Request GPIO before creating sysfs entries
        regulator: gpio: don't print error on EPROBE_DEFER
        ...
      555f8160
    • Linus Torvalds's avatar
      Merge tag 'regmap-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap · b7aae4a9
      Linus Torvalds authored
      Pull regmap updates from Mark Brown:
       "This has been a very busy release for regmap, not just in cleaning up
        the mess we got ourselves into with the endianness handling but also
        in other areas too:
      
         - Fixes for the endianness handling so that we now explicitly default
           to little endian (the code used to do this by accident).  This
           fixes handling of explictly specified endianness on big endian
           systems.
      
         - Optimisation of the implementation of register striding.
      
         - A refectoring of the _update_bits() code to reduce duplication.
      
         - Fixes and enhancements for the interrupt implementation which make
           it easier to use in a wider range of systems"
      
      * tag 'regmap-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: (28 commits)
        regmap: irq: add devm apis for regmap_{add,del}_irq_chip
        regmap: replace regmap_write_bits()
        regmap: irq: Enable irq retriggering for nested irqs
        regmap: add regmap_fields_force_xxx() macros
        regmap: add regmap_field_force_xxx() macros
        regmap: merge regmap_fields_update_bits() into macro
        regmap: merge regmap_fields_write() into macro
        regmap: add regmap_fields_update_bits_base()
        regmap: merge regmap_field_update_bits() into macro
        regmap: merge regmap_field_write() into macro
        regmap: add regmap_field_update_bits_base()
        regmap: merge regmap_update_bits_check_async() into macro
        regmap: merge regmap_update_bits_check() into macro
        regmap: merge regmap_update_bits_async() into macro
        regmap: merge regmap_update_bits() into macro
        regmap: add regmap_update_bits_base()
        regcache: flat: Introduce register strider order
        regcache: Introduce the index parsing API by stride order
        regmap: core: Introduce register stride order
        regmap: irq: add devm apis for regmap_{add,del}_irq_chip
        ...
      b7aae4a9
    • Linus Torvalds's avatar
      Merge tag 'spi-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi · ff280e36
      Linus Torvalds authored
      Pull spi updates from Mark Brown:
       "Not the biggest set of changes for SPI but a bit of a pickup in
        activity on the core:
      
         - Support for memory mapped read from flash devices via a SPI
           controller.
      
         - The beginnings of a message rewriting framework in the core which
           should in time allow us to support transforming messages to work
           around the limits of controllers or optimise the performance for
           controllers transparently to calling drivers.
      
         - Updates to the PXA2xx, the main functional change being to improve
           the ACPI support.
      
         - A new driver for the Analog Devices AXI SPI engine"
      
      * tag 'spi-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (66 commits)
        spi: Add gfp parameter to kernel-doc to fix build warning
        spi: Fix htmldocs build error due struct spi_replaced_transfers
        spi: rockchip: covert rsd_nsecs to u32 type
        spi: rockchip: header file cleanup
        spi: xilinx: Add devicetree binding for spi-xilinx
        spi: respect the maximum segment size of DMA device
        spi: rockchip: check requesting dma channel with EPROBE_DEFER
        spi: rockchip: migrate to dmaengine_terminate_async
        spi: rockchip: check return value of dmaengine_prep_slave_sg
        spi: core: Fix deadlock when sending messages
        spi/rockchip: fix endian mode for 16-bit transfers
        spi/rockchip: Make sure spi clk is on in rockchip_spi_set_cs
        spi: pxa2xx: Use newer more explicit DMAengine terminate API
        spi: pxa2xx: Add support for Intel Broxton B-Step
        spi: lp-8841: return correct error code from probe
        spi: imx: drop bogus tests for rx/tx bufs in DMA transfer
        spi: imx: set MX51_ECSPI_CTRL_SMC bit in setup function
        spi: imx: make some register defines simpler
        spi: imx: remove unnecessary bit clearing in mx51_ecspi_config
        spi: imx: add support for all SPI word width for DMA
        ...
      ff280e36
    • Linus Torvalds's avatar
      Merge tag 'pinctrl-v4.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl · 5ca5446e
      Linus Torvalds authored
      Pull pin control updates from Linus Walleij:
       "An almost purely driver related set of changes with no major changes
        to the framework, only one patch adding an unlocked version of the
        pinctrl_find_gpio_range_from_pin() library call.
      
        New drivers:
         - ST Microelectronics STM32 MCU support: this is a non-MMU low-end
           platform for IoT things (etc).
         - Microchip PIC32 MCU support: same story as for STM32.
      
        New subdrivers:
         - Allwinner SunXi H3 R_PIO controller support.
         - Qualcomm IPQ4019 support.
         - MediaTek MT2701 and MT7623.
         - Allwinner A64
      
        Non-critical fixes:
         - gpio_disable_free() for the Vybrid.
         - pinctrl single: use a separate lockdep class.
      
        Misc:
         - Substantial cleanups and rewrites for the Super-H PFC driver and
           subdrivers.
         - Various fixes and cleanups, especially Paul Gortmakers work to make
           nonmodular drivers nonmodular"
      
      * tag 'pinctrl-v4.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (75 commits)
        pinctrl: single: Use a separate lockdep class
        drivers: pinctrl: add driver for Allwinner A64 SoC
        pinctrl: Broadcom Northstar2 pinctrl device tree bindings
        pinctrl: amlogic: Make driver independent from two-domain configuration
        pinctrl: amlogic: Separate some pin functions for Meson8 / Meson8b
        pinctrl: at91: use __maybe_unused to hide pm functions
        pinctrl: sh-pfc: core: don't open code of_device_get_match_data()
        pinctrl: uniphier: rename CONFIG options and file names
        pinctrl: sunxi: make A80 explicitly non-modular
        pinctrl: stm32: make explicitly non-modular
        pinctrl: sh-pfc: make explicitly non-modular
        pinctrl: meson: make explicitly non-modular
        pinctrl: pinctrl-mt6397 driver explicitly non-modular
        pinctrl: sunxi: does not need module.h
        pinctrl: pxa2xx: export symbols
        pinctrl: sunxi: Change mux setting on PI irq pins
        pinctrl: sunxi: Remove non existing irq's
        pinctrl: imx: attach iomuxc device to gpr syscon
        pinctrl-bcm2835: Fix cut-and-paste error in "pull" parsing
        pinctrl: lpc1850-scu: document nxp,gpio-pin-interrupt
        ...
      5ca5446e
  3. 15 Mar, 2016 1 commit