1. 22 12月, 2018 6 次提交
  2. 21 12月, 2018 1 次提交
    • D
      vfs: Separate changing mount flags full remount · 43f5e655
      David Howells 提交于
      Separate just the changing of mount flags (MS_REMOUNT|MS_BIND) from full
      remount because the mount data will get parsed with the new fs_context
      stuff prior to doing a remount - and this causes the syscall to fail under
      some circumstances.
      
      To quote Eric's explanation:
      
        [...] mount(..., MS_REMOUNT|MS_BIND, ...) now validates the mount options
        string, which breaks systemd unit files with ProtectControlGroups=yes
        (e.g.  systemd-networkd.service) when systemd does the following to
        change a cgroup (v1) mount to read-only:
      
          mount(NULL, "/run/systemd/unit-root/sys/fs/cgroup/systemd", NULL,
      	  MS_RDONLY|MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_REMOUNT|MS_BIND, NULL)
      
        ... when the kernel has CONFIG_CGROUPS=y but no cgroup subsystems
        enabled, since in that case the error "cgroup1: Need name or subsystem
        set" is hit when the mount options string is empty.
      
        Probably it doesn't make sense to validate the mount options string at
        all in the MS_REMOUNT|MS_BIND case, though maybe you had something else
        in mind.
      
      This is also worthwhile doing because we will need to add a mount_setattr()
      syscall to take over the remount-bind function.
      Reported-by: NEric Biggers <ebiggers@google.com>
      Signed-off-by: NDavid Howells <dhowells@redhat.com>
      Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      Reviewed-by: NDavid Howells <dhowells@redhat.com>
      43f5e655
  3. 04 11月, 2018 2 次提交
    • M
      mm, thp: consolidate THP gfp handling into alloc_hugepage_direct_gfpmask · 89c83fb5
      Michal Hocko 提交于
      THP allocation mode is quite complex and it depends on the defrag mode.
      This complexity is hidden in alloc_hugepage_direct_gfpmask from a large
      part currently. The NUMA special casing (namely __GFP_THISNODE) is
      however independent and placed in alloc_pages_vma currently. This both
      adds an unnecessary branch to all vma based page allocation requests and
      it makes the code more complex unnecessarily as well. Not to mention
      that e.g. shmem THP used to do the node reclaiming unconditionally
      regardless of the defrag mode until recently. This was not only
      unexpected behavior but it was also hardly a good default behavior and I
      strongly suspect it was just a side effect of the code sharing more than
      a deliberate decision which suggests that such a layering is wrong.
      
      Get rid of the thp special casing from alloc_pages_vma and move the
      logic to alloc_hugepage_direct_gfpmask. __GFP_THISNODE is applied to the
      resulting gfp mask only when the direct reclaim is not requested and
      when there is no explicit numa binding to preserve the current logic.
      
      Please note that there's also a slight difference wrt MPOL_BIND now. The
      previous code would avoid using __GFP_THISNODE if the local node was
      outside of policy_nodemask(). After this patch __GFP_THISNODE is avoided
      for all MPOL_BIND policies. So there's a difference that if local node
      is actually allowed by the bind policy's nodemask, previously
      __GFP_THISNODE would be added, but now it won't be. From the behavior
      POV this is still correct because the policy nodemask is used.
      
      Link: http://lkml.kernel.org/r/20180925120326.24392-3-mhocko@kernel.orgSigned-off-by: NMichal Hocko <mhocko@suse.com>
      Acked-by: NVlastimil Babka <vbabka@suse.cz>
      Cc: Alex Williamson <alex.williamson@redhat.com>
      Cc: Andrea Arcangeli <aarcange@redhat.com>
      Cc: David Rientjes <rientjes@google.com>
      Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
      Cc: Mel Gorman <mgorman@techsingularity.net>
      Cc: Stefan Priebe - Profihost AG <s.priebe@profihost.ag>
      Cc: Zi Yan <zi.yan@cs.rutgers.edu>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      89c83fb5
    • S
      include/linux/notifier.h: SRCU: fix ctags · 94e297c5
      Sam Protsenko 提交于
      ctags indexing ("make tags" command) throws this warning:
      
          ctags: Warning: include/linux/notifier.h:125:
          null expansion of name pattern "\1"
      
      This is the result of DEFINE_PER_CPU() macro expansion.  Fix that by
      getting rid of line break.
      
      Similar fix was already done in commit 25528213 ("tags: Fix
      DEFINE_PER_CPU expansions"), but this one probably wasn't noticed.
      
      Link: http://lkml.kernel.org/r/20181030202808.28027-1-semen.protsenko@linaro.org
      Fixes: 9c80172b ("kernel/SRCU: provide a static initializer")
      Signed-off-by: NSam Protsenko <semen.protsenko@linaro.org>
      Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
      Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      94e297c5
  4. 03 11月, 2018 1 次提交
  5. 02 11月, 2018 2 次提交
    • D
      blkcg: revert blkcg cleanups series · b5f2954d
      Dennis Zhou 提交于
      This reverts a series committed earlier due to null pointer exception
      bug report in [1]. It seems there are edge case interactions that I did
      not consider and will need some time to understand what causes the
      adverse interactions.
      
      The original series can be found in [2] with a follow up series in [3].
      
      [1] https://www.spinics.net/lists/cgroups/msg20719.html
      [2] https://lore.kernel.org/lkml/20180911184137.35897-1-dennisszhou@gmail.com/
      [3] https://lore.kernel.org/lkml/20181020185612.51587-1-dennis@kernel.org/
      
      This reverts the following commits:
      d459d853, b2c3fa54, 101246ec, b3b9f24f, e2b09899,
      f0fcb3ec, c839e7a0, bdc24917, 74b7c02a, 5bf9a1f3,
      a7b39b4e, 07b05bcc, 49f4c2dc, 27e6fa99Signed-off-by: NDennis Zhou <dennis@kernel.org>
      Signed-off-by: NJens Axboe <axboe@kernel.dk>
      b5f2954d
    • P
      SUNRPC: Use atomic(64)_t for seq_send(64) · c3be6577
      Paul Burton 提交于
      The seq_send & seq_send64 fields in struct krb5_ctx are used as
      atomically incrementing counters. This is implemented using cmpxchg() &
      cmpxchg64() to implement what amount to custom versions of
      atomic_fetch_inc() & atomic64_fetch_inc().
      
      Besides the duplication, using cmpxchg64() has another major drawback in
      that some 32 bit architectures don't provide it. As such commit
      571ed1fd ("SUNRPC: Replace krb5_seq_lock with a lockless scheme")
      resulted in build failures for some architectures.
      
      Change seq_send to be an atomic_t and seq_send64 to be an atomic64_t,
      then use atomic(64)_* functions to manipulate the values. The atomic64_t
      type & associated functions are provided even on architectures which
      lack real 64 bit atomic memory access via CONFIG_GENERIC_ATOMIC64 which
      uses spinlocks to serialize access. This fixes the build failures for
      architectures lacking cmpxchg64().
      
      A potential alternative that was raised would be to provide cmpxchg64()
      on the 32 bit architectures that currently lack it, using spinlocks.
      However this would provide a version of cmpxchg64() with semantics a
      little different to the implementations on architectures with real 64
      bit atomics - the spinlock-based implementation would only work if all
      access to the memory used with cmpxchg64() is *always* performed using
      cmpxchg64(). That is not currently a requirement for users of
      cmpxchg64(), and making it one seems questionable. As such avoiding
      cmpxchg64() outside of architecture-specific code seems best,
      particularly in cases where atomic64_t seems like a better fit anyway.
      
      The CONFIG_GENERIC_ATOMIC64 implementation of atomic64_* functions will
      use spinlocks & so faces the same issue, but with the key difference
      that the memory backing an atomic64_t ought to always be accessed via
      the atomic64_* functions anyway making the issue moot.
      Signed-off-by: NPaul Burton <paul.burton@mips.com>
      Fixes: 571ed1fd ("SUNRPC: Replace krb5_seq_lock with a lockless scheme")
      Cc: Trond Myklebust <trond.myklebust@hammerspace.com>
      Cc: Anna Schumaker <anna.schumaker@netapp.com>
      Cc: J. Bruce Fields <bfields@fieldses.org>
      Cc: Jeff Layton <jlayton@kernel.org>
      Cc: David S. Miller <davem@davemloft.net>
      Cc: linux-nfs@vger.kernel.org
      Cc: netdev@vger.kernel.org
      Signed-off-by: NTrond Myklebust <trond.myklebust@hammerspace.com>
      c3be6577
  6. 01 11月, 2018 4 次提交
    • D
      x86/compat: Adjust in_compat_syscall() to generic code under !COMPAT · a846446b
      Dmitry Safonov 提交于
      The result of in_compat_syscall() can be pictured as:
      
      x86 platform:
          ---------------------------------------------------
          |  Arch\syscall  |  64-bit  |   ia32   |   x32    |
          |-------------------------------------------------|
          |     x86_64     |  false   |   true   |   true   |
          |-------------------------------------------------|
          |      i686      |          |  <true>  |          |
          ---------------------------------------------------
      
      Other platforms:
          -------------------------------------------
          |  Arch\syscall  |  64-bit  |   compat    |
          |-----------------------------------------|
          |     64-bit     |  false   |    true     |
          |-----------------------------------------|
          |    32-bit(?)   |          |   <false>   |
          -------------------------------------------
      
      As seen, the result of in_compat_syscall() on generic 32-bit platform
      differs from i686.
      
      There is no reason for in_compat_syscall() == true on native i686.  It also
      easy to misread code if the result on native 32-bit platform differs
      between arches.
      
      Because of that non arch-specific code has many places with:
          if (IS_ENABLED(CONFIG_COMPAT) && in_compat_syscall())
      in different variations.
      
      It looks-like the only non-x86 code which uses in_compat_syscall() not
      under CONFIG_COMPAT guard is in amd/amdkfd. But according to the commit
      a18069c1 ("amdkfd: Disable support for 32-bit user processes"), it
      actually should be disabled on native i686.
      
      Rename in_compat_syscall() to in_32bit_syscall() for x86-specific code
      and make in_compat_syscall() false under !CONFIG_COMPAT.
      
      A follow on patch will clean up generic users which were forced to check
      IS_ENABLED(CONFIG_COMPAT) with in_compat_syscall().
      Signed-off-by: NDmitry Safonov <dima@arista.com>
      Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      Reviewed-by: NAndy Lutomirski <luto@kernel.org>
      Cc: Dmitry Safonov <0x7f454c46@gmail.com>
      Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Herbert Xu <herbert@gondor.apana.org.au>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: John Stultz <john.stultz@linaro.org>
      Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Steffen Klassert <steffen.klassert@secunet.com>
      Cc: Stephen Boyd <sboyd@kernel.org>
      Cc: Steven Rostedt <rostedt@goodmis.org>
      Cc: linux-efi@vger.kernel.org
      Cc: netdev@vger.kernel.org
      Link: https://lkml.kernel.org/r/20181012134253.23266-2-dima@arista.com
      a846446b
    • D
      bpf: fix partial copy of map_ptr when dst is scalar · 0962590e
      Daniel Borkmann 提交于
      ALU operations on pointers such as scalar_reg += map_value_ptr are
      handled in adjust_ptr_min_max_vals(). Problem is however that map_ptr
      and range in the register state share a union, so transferring state
      through dst_reg->range = ptr_reg->range is just buggy as any new
      map_ptr in the dst_reg is then truncated (or null) for subsequent
      checks. Fix this by adding a raw member and use it for copying state
      over to dst_reg.
      
      Fixes: f1174f77 ("bpf/verifier: rework value tracking")
      Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
      Cc: Edward Cree <ecree@solarflare.com>
      Acked-by: NAlexei Starovoitov <ast@kernel.org>
      Signed-off-by: NAlexei Starovoitov <ast@kernel.org>
      0962590e
    • B
      EDAC, skx: Fix randconfig builds · a324e939
      Borislav Petkov 提交于
      The driver depends on the ADXL component glue and selects it. However,
      ADXL itself implicitly depends on ACPI and in nonsensical randconfig
      builds like this:
      
        # CONFIG_ACPI is not set
        CONFIG_ACPI_ADXL=y
      
      where ACPI is not enabled, the build fails with:
      
        drivers/edac/skx_edac.o: In function `skx_mce_check_error':
        skx_edac.c:(.text+0xab): undefined reference to `adxl_decode'
        drivers/edac/skx_edac.o: In function `skx_init':
        skx_edac.c:(.init.text+0x8bf): undefined reference to `adxl_get_component_names'
        make: *** [vmlinux] Error 1
      
      Add stubs for that case so that the build succeeds. CONFIG_ACPI=n
      doesn't make any sense for real configurations but this fix will at
      least silence randconfig builds.
      Signed-off-by: NBorislav Petkov <bp@suse.de>
      Acked-by: NTony Luck <tony.luck@intel.com>
      Cc: "Rafael J. Wysocki" <rafael@kernel.org>
      a324e939
    • M
      i40e: Update status codes · bb58fd7e
      Mitch Williams 提交于
      Add a few new status code which will be used by the ice driver, and
      rename a few to make them more consistent. Error code are mapped to
      similar values as in i40e_status.h, so as to be compatible with older
      VF drivers not using this status enum.
      Signed-off-by: NMitch Williams <mitch.a.williams@intel.com>
      Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
      Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
      bb58fd7e
  7. 31 10月, 2018 24 次提交
    • D
      mm/memory_hotplug: make add_memory() take the device_hotplug_lock · 8df1d0e4
      David Hildenbrand 提交于
      add_memory() currently does not take the device_hotplug_lock, however
      is aleady called under the lock from
      	arch/powerpc/platforms/pseries/hotplug-memory.c
      	drivers/acpi/acpi_memhotplug.c
      to synchronize against CPU hot-remove and similar.
      
      In general, we should hold the device_hotplug_lock when adding memory to
      synchronize against online/offline request (e.g.  from user space) - which
      already resulted in lock inversions due to device_lock() and
      mem_hotplug_lock - see 30467e0b ("mm, hotplug: fix concurrent memory
      hot-add deadlock").  add_memory()/add_memory_resource() will create memory
      block devices, so this really feels like the right thing to do.
      
      Holding the device_hotplug_lock makes sure that a memory block device
      can really only be accessed (e.g. via .online/.state) from user space,
      once the memory has been fully added to the system.
      
      The lock is not held yet in
      	drivers/xen/balloon.c
      	arch/powerpc/platforms/powernv/memtrace.c
      	drivers/s390/char/sclp_cmd.c
      	drivers/hv/hv_balloon.c
      So, let's either use the locked variants or take the lock.
      
      Don't export add_memory_resource(), as it once was exported to be used by
      XEN, which is never built as a module.  If somebody requires it, we also
      have to export a locked variant (as device_hotplug_lock is never
      exported).
      
      Link: http://lkml.kernel.org/r/20180925091457.28651-3-david@redhat.comSigned-off-by: NDavid Hildenbrand <david@redhat.com>
      Reviewed-by: NPavel Tatashin <pavel.tatashin@microsoft.com>
      Reviewed-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
      Reviewed-by: NRashmica Gupta <rashmica.g@gmail.com>
      Reviewed-by: NOscar Salvador <osalvador@suse.de>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
      Cc: Len Brown <lenb@kernel.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
      Cc: Juergen Gross <jgross@suse.com>
      Cc: Nathan Fontenot <nfont@linux.vnet.ibm.com>
      Cc: John Allen <jallen@linux.vnet.ibm.com>
      Cc: Michal Hocko <mhocko@suse.com>
      Cc: Dan Williams <dan.j.williams@intel.com>
      Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
      Cc: Vlastimil Babka <vbabka@suse.cz>
      Cc: Mathieu Malaterre <malat@debian.org>
      Cc: Pavel Tatashin <pavel.tatashin@microsoft.com>
      Cc: YASUAKI ISHIMATSU <yasu.isimatu@gmail.com>
      Cc: Balbir Singh <bsingharora@gmail.com>
      Cc: Haiyang Zhang <haiyangz@microsoft.com>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Kate Stewart <kstewart@linuxfoundation.org>
      Cc: "K. Y. Srinivasan" <kys@microsoft.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Michael Neuling <mikey@neuling.org>
      Cc: Philippe Ombredanne <pombredanne@nexb.com>
      Cc: Stephen Hemminger <sthemmin@microsoft.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      8df1d0e4
    • D
      mm/memory_hotplug: make remove_memory() take the device_hotplug_lock · d15e5926
      David Hildenbrand 提交于
      Patch series "mm: online/offline_pages called w.o. mem_hotplug_lock", v3.
      
      Reading through the code and studying how mem_hotplug_lock is to be used,
      I noticed that there are two places where we can end up calling
      device_online()/device_offline() - online_pages()/offline_pages() without
      the mem_hotplug_lock.  And there are other places where we call
      device_online()/device_offline() without the device_hotplug_lock.
      
      While e.g.
      	echo "online" > /sys/devices/system/memory/memory9/state
      is fine, e.g.
      	echo 1 > /sys/devices/system/memory/memory9/online
      Will not take the mem_hotplug_lock. However the device_lock() and
      device_hotplug_lock.
      
      E.g.  via memory_probe_store(), we can end up calling
      add_memory()->online_pages() without the device_hotplug_lock.  So we can
      have concurrent callers in online_pages().  We e.g.  touch in
      online_pages() basically unprotected zone->present_pages then.
      
      Looks like there is a longer history to that (see Patch #2 for details),
      and fixing it to work the way it was intended is not really possible.  We
      would e.g.  have to take the mem_hotplug_lock in device/base/core.c, which
      sounds wrong.
      
      Summary: We had a lock inversion on mem_hotplug_lock and device_lock().
      More details can be found in patch 3 and patch 6.
      
      I propose the general rules (documentation added in patch 6):
      
      1. add_memory/add_memory_resource() must only be called with
         device_hotplug_lock.
      2. remove_memory() must only be called with device_hotplug_lock. This is
         already documented and holds for all callers.
      3. device_online()/device_offline() must only be called with
         device_hotplug_lock. This is already documented and true for now in core
         code. Other callers (related to memory hotplug) have to be fixed up.
      4. mem_hotplug_lock is taken inside of add_memory/remove_memory/
         online_pages/offline_pages.
      
      To me, this looks way cleaner than what we have right now (and easier to
      verify).  And looking at the documentation of remove_memory, using
      lock_device_hotplug also for add_memory() feels natural.
      
      This patch (of 6):
      
      remove_memory() is exported right now but requires the
      device_hotplug_lock, which is not exported.  So let's provide a variant
      that takes the lock and only export that one.
      
      The lock is already held in
      	arch/powerpc/platforms/pseries/hotplug-memory.c
      	drivers/acpi/acpi_memhotplug.c
      	arch/powerpc/platforms/powernv/memtrace.c
      
      Apart from that, there are not other users in the tree.
      
      Link: http://lkml.kernel.org/r/20180925091457.28651-2-david@redhat.comSigned-off-by: NDavid Hildenbrand <david@redhat.com>
      Reviewed-by: NPavel Tatashin <pavel.tatashin@microsoft.com>
      Reviewed-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
      Reviewed-by: NRashmica Gupta <rashmica.g@gmail.com>
      Reviewed-by: NOscar Salvador <osalvador@suse.de>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
      Cc: Len Brown <lenb@kernel.org>
      Cc: Rashmica Gupta <rashmica.g@gmail.com>
      Cc: Michael Neuling <mikey@neuling.org>
      Cc: Balbir Singh <bsingharora@gmail.com>
      Cc: Nathan Fontenot <nfont@linux.vnet.ibm.com>
      Cc: John Allen <jallen@linux.vnet.ibm.com>
      Cc: Michal Hocko <mhocko@suse.com>
      Cc: Dan Williams <dan.j.williams@intel.com>
      Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
      Cc: Vlastimil Babka <vbabka@suse.cz>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: YASUAKI ISHIMATSU <yasu.isimatu@gmail.com>
      Cc: Mathieu Malaterre <malat@debian.org>
      Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
      Cc: Haiyang Zhang <haiyangz@microsoft.com>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Juergen Gross <jgross@suse.com>
      Cc: Kate Stewart <kstewart@linuxfoundation.org>
      Cc: "K. Y. Srinivasan" <kys@microsoft.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Philippe Ombredanne <pombredanne@nexb.com>
      Cc: Stephen Hemminger <sthemmin@microsoft.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      d15e5926
    • M
      memblock: stop using implicit alignment to SMP_CACHE_BYTES · 7e1c4e27
      Mike Rapoport 提交于
      When a memblock allocation APIs are called with align = 0, the alignment
      is implicitly set to SMP_CACHE_BYTES.
      
      Implicit alignment is done deep in the memblock allocator and it can
      come as a surprise.  Not that such an alignment would be wrong even
      when used incorrectly but it is better to be explicit for the sake of
      clarity and the prinicple of the least surprise.
      
      Replace all such uses of memblock APIs with the 'align' parameter
      explicitly set to SMP_CACHE_BYTES and stop implicit alignment assignment
      in the memblock internal allocation functions.
      
      For the case when memblock APIs are used via helper functions, e.g.  like
      iommu_arena_new_node() in Alpha, the helper functions were detected with
      Coccinelle's help and then manually examined and updated where
      appropriate.
      
      The direct memblock APIs users were updated using the semantic patch below:
      
      @@
      expression size, min_addr, max_addr, nid;
      @@
      (
      |
      - memblock_alloc_try_nid_raw(size, 0, min_addr, max_addr, nid)
      + memblock_alloc_try_nid_raw(size, SMP_CACHE_BYTES, min_addr, max_addr,
      nid)
      |
      - memblock_alloc_try_nid_nopanic(size, 0, min_addr, max_addr, nid)
      + memblock_alloc_try_nid_nopanic(size, SMP_CACHE_BYTES, min_addr, max_addr,
      nid)
      |
      - memblock_alloc_try_nid(size, 0, min_addr, max_addr, nid)
      + memblock_alloc_try_nid(size, SMP_CACHE_BYTES, min_addr, max_addr, nid)
      |
      - memblock_alloc(size, 0)
      + memblock_alloc(size, SMP_CACHE_BYTES)
      |
      - memblock_alloc_raw(size, 0)
      + memblock_alloc_raw(size, SMP_CACHE_BYTES)
      |
      - memblock_alloc_from(size, 0, min_addr)
      + memblock_alloc_from(size, SMP_CACHE_BYTES, min_addr)
      |
      - memblock_alloc_nopanic(size, 0)
      + memblock_alloc_nopanic(size, SMP_CACHE_BYTES)
      |
      - memblock_alloc_low(size, 0)
      + memblock_alloc_low(size, SMP_CACHE_BYTES)
      |
      - memblock_alloc_low_nopanic(size, 0)
      + memblock_alloc_low_nopanic(size, SMP_CACHE_BYTES)
      |
      - memblock_alloc_from_nopanic(size, 0, min_addr)
      + memblock_alloc_from_nopanic(size, SMP_CACHE_BYTES, min_addr)
      |
      - memblock_alloc_node(size, 0, nid)
      + memblock_alloc_node(size, SMP_CACHE_BYTES, nid)
      )
      
      [mhocko@suse.com: changelog update]
      [akpm@linux-foundation.org: coding-style fixes]
      [rppt@linux.ibm.com: fix missed uses of implicit alignment]
        Link: http://lkml.kernel.org/r/20181016133656.GA10925@rapoport-lnx
      Link: http://lkml.kernel.org/r/1538687224-17535-1-git-send-email-rppt@linux.vnet.ibm.comSigned-off-by: NMike Rapoport <rppt@linux.vnet.ibm.com>
      Suggested-by: NMichal Hocko <mhocko@suse.com>
      Acked-by: Paul Burton <paul.burton@mips.com>	[MIPS]
      Acked-by: Michael Ellerman <mpe@ellerman.id.au>	[powerpc]
      Acked-by: NMichal Hocko <mhocko@suse.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Chris Zankel <chris@zankel.net>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Guan Xuetao <gxt@pku.edu.cn>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Matt Turner <mattst88@gmail.com>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Richard Weinberger <richard@nod.at>
      Cc: Russell King <linux@armlinux.org.uk>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Tony Luck <tony.luck@intel.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      7e1c4e27
    • M
      mm: remove include/linux/bootmem.h · 57c8a661
      Mike Rapoport 提交于
      Move remaining definitions and declarations from include/linux/bootmem.h
      into include/linux/memblock.h and remove the redundant header.
      
      The includes were replaced with the semantic patch below and then
      semi-automated removal of duplicated '#include <linux/memblock.h>
      
      @@
      @@
      - #include <linux/bootmem.h>
      + #include <linux/memblock.h>
      
      [sfr@canb.auug.org.au: dma-direct: fix up for the removal of linux/bootmem.h]
        Link: http://lkml.kernel.org/r/20181002185342.133d1680@canb.auug.org.au
      [sfr@canb.auug.org.au: powerpc: fix up for removal of linux/bootmem.h]
        Link: http://lkml.kernel.org/r/20181005161406.73ef8727@canb.auug.org.au
      [sfr@canb.auug.org.au: x86/kaslr, ACPI/NUMA: fix for linux/bootmem.h removal]
        Link: http://lkml.kernel.org/r/20181008190341.5e396491@canb.auug.org.au
      Link: http://lkml.kernel.org/r/1536927045-23536-30-git-send-email-rppt@linux.vnet.ibm.comSigned-off-by: NMike Rapoport <rppt@linux.vnet.ibm.com>
      Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au>
      Acked-by: NMichal Hocko <mhocko@suse.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Chris Zankel <chris@zankel.net>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Greentime Hu <green.hu@gmail.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Guan Xuetao <gxt@pku.edu.cn>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
      Cc: Jonas Bonn <jonas@southpole.se>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Ley Foon Tan <lftan@altera.com>
      Cc: Mark Salter <msalter@redhat.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Matt Turner <mattst88@gmail.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Palmer Dabbelt <palmer@sifive.com>
      Cc: Paul Burton <paul.burton@mips.com>
      Cc: Richard Kuo <rkuo@codeaurora.org>
      Cc: Richard Weinberger <richard@nod.at>
      Cc: Rich Felker <dalias@libc.org>
      Cc: Russell King <linux@armlinux.org.uk>
      Cc: Serge Semin <fancer.lancer@gmail.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vineet Gupta <vgupta@synopsys.com>
      Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      57c8a661
    • M
      memblock: rename free_all_bootmem to memblock_free_all · c6ffc5ca
      Mike Rapoport 提交于
      The conversion is done using
      
      sed -i 's@free_all_bootmem@memblock_free_all@' \
          $(git grep -l free_all_bootmem)
      
      Link: http://lkml.kernel.org/r/1536927045-23536-26-git-send-email-rppt@linux.vnet.ibm.comSigned-off-by: NMike Rapoport <rppt@linux.vnet.ibm.com>
      Acked-by: NMichal Hocko <mhocko@suse.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Chris Zankel <chris@zankel.net>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Greentime Hu <green.hu@gmail.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Guan Xuetao <gxt@pku.edu.cn>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
      Cc: Jonas Bonn <jonas@southpole.se>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Ley Foon Tan <lftan@altera.com>
      Cc: Mark Salter <msalter@redhat.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Matt Turner <mattst88@gmail.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Palmer Dabbelt <palmer@sifive.com>
      Cc: Paul Burton <paul.burton@mips.com>
      Cc: Richard Kuo <rkuo@codeaurora.org>
      Cc: Richard Weinberger <richard@nod.at>
      Cc: Rich Felker <dalias@libc.org>
      Cc: Russell King <linux@armlinux.org.uk>
      Cc: Serge Semin <fancer.lancer@gmail.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vineet Gupta <vgupta@synopsys.com>
      Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      c6ffc5ca
    • M
      memblock: replace free_bootmem_late with memblock_free_late · 53ab85eb
      Mike Rapoport 提交于
      The free_bootmem_late and memblock_free_late do exactly the same thing:
      they iterate over a range and give pages to the page allocator.
      
      Replace calls to free_bootmem_late with calls to memblock_free_late and
      remove the bootmem variant.
      
      Link: http://lkml.kernel.org/r/1536927045-23536-25-git-send-email-rppt@linux.vnet.ibm.comSigned-off-by: NMike Rapoport <rppt@linux.vnet.ibm.com>
      Acked-by: NMichal Hocko <mhocko@suse.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Chris Zankel <chris@zankel.net>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Greentime Hu <green.hu@gmail.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Guan Xuetao <gxt@pku.edu.cn>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
      Cc: Jonas Bonn <jonas@southpole.se>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Ley Foon Tan <lftan@altera.com>
      Cc: Mark Salter <msalter@redhat.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Matt Turner <mattst88@gmail.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Palmer Dabbelt <palmer@sifive.com>
      Cc: Paul Burton <paul.burton@mips.com>
      Cc: Richard Kuo <rkuo@codeaurora.org>
      Cc: Richard Weinberger <richard@nod.at>
      Cc: Rich Felker <dalias@libc.org>
      Cc: Russell King <linux@armlinux.org.uk>
      Cc: Serge Semin <fancer.lancer@gmail.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vineet Gupta <vgupta@synopsys.com>
      Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      53ab85eb
    • M
      memblock: replace free_bootmem{_node} with memblock_free · 2013288f
      Mike Rapoport 提交于
      The free_bootmem and free_bootmem_node are merely wrappers for
      memblock_free. Replace their usage with a call to memblock_free using the
      following semantic patch:
      
      @@
      expression e1, e2, e3;
      @@
      (
      - free_bootmem(e1, e2)
      + memblock_free(e1, e2)
      |
      - free_bootmem_node(e1, e2, e3)
      + memblock_free(e2, e3)
      )
      
      Link: http://lkml.kernel.org/r/1536927045-23536-24-git-send-email-rppt@linux.vnet.ibm.comSigned-off-by: NMike Rapoport <rppt@linux.vnet.ibm.com>
      Acked-by: NMichal Hocko <mhocko@suse.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Chris Zankel <chris@zankel.net>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Greentime Hu <green.hu@gmail.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Guan Xuetao <gxt@pku.edu.cn>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
      Cc: Jonas Bonn <jonas@southpole.se>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Ley Foon Tan <lftan@altera.com>
      Cc: Mark Salter <msalter@redhat.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Matt Turner <mattst88@gmail.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Palmer Dabbelt <palmer@sifive.com>
      Cc: Paul Burton <paul.burton@mips.com>
      Cc: Richard Kuo <rkuo@codeaurora.org>
      Cc: Richard Weinberger <richard@nod.at>
      Cc: Rich Felker <dalias@libc.org>
      Cc: Russell King <linux@armlinux.org.uk>
      Cc: Serge Semin <fancer.lancer@gmail.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vineet Gupta <vgupta@synopsys.com>
      Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      2013288f
    • M
      mm: nobootmem: remove bootmem allocation APIs · 6c7835f8
      Mike Rapoport 提交于
      The bootmem compatibility APIs are not used and can be removed.
      
      Link: http://lkml.kernel.org/r/1536927045-23536-23-git-send-email-rppt@linux.vnet.ibm.comSigned-off-by: NMike Rapoport <rppt@linux.vnet.ibm.com>
      Acked-by: NMichal Hocko <mhocko@suse.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Chris Zankel <chris@zankel.net>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Greentime Hu <green.hu@gmail.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Guan Xuetao <gxt@pku.edu.cn>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
      Cc: Jonas Bonn <jonas@southpole.se>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Ley Foon Tan <lftan@altera.com>
      Cc: Mark Salter <msalter@redhat.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Matt Turner <mattst88@gmail.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Palmer Dabbelt <palmer@sifive.com>
      Cc: Paul Burton <paul.burton@mips.com>
      Cc: Richard Kuo <rkuo@codeaurora.org>
      Cc: Richard Weinberger <richard@nod.at>
      Cc: Rich Felker <dalias@libc.org>
      Cc: Russell King <linux@armlinux.org.uk>
      Cc: Serge Semin <fancer.lancer@gmail.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vineet Gupta <vgupta@synopsys.com>
      Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      6c7835f8
    • M
      memblock: replace __alloc_bootmem with memblock_alloc_from · 4fc4a09e
      Mike Rapoport 提交于
      The functions are equivalent, just the later does not require nobootmem
      translation layer.
      
      The conversion is done using the following semantic patch:
      
      @@
      expression size, align, goal;
      @@
      - __alloc_bootmem(size, align, goal)
      + memblock_alloc_from(size, align, goal)
      
      Link: http://lkml.kernel.org/r/1536927045-23536-21-git-send-email-rppt@linux.vnet.ibm.comSigned-off-by: NMike Rapoport <rppt@linux.vnet.ibm.com>
      Acked-by: NMichal Hocko <mhocko@suse.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Chris Zankel <chris@zankel.net>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Greentime Hu <green.hu@gmail.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Guan Xuetao <gxt@pku.edu.cn>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
      Cc: Jonas Bonn <jonas@southpole.se>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Ley Foon Tan <lftan@altera.com>
      Cc: Mark Salter <msalter@redhat.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Matt Turner <mattst88@gmail.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Palmer Dabbelt <palmer@sifive.com>
      Cc: Paul Burton <paul.burton@mips.com>
      Cc: Richard Kuo <rkuo@codeaurora.org>
      Cc: Richard Weinberger <richard@nod.at>
      Cc: Rich Felker <dalias@libc.org>
      Cc: Russell King <linux@armlinux.org.uk>
      Cc: Serge Semin <fancer.lancer@gmail.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vineet Gupta <vgupta@synopsys.com>
      Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      4fc4a09e
    • M
      memblock: add align parameter to memblock_alloc_node() · 3913c8f9
      Mike Rapoport 提交于
      With the align parameter memblock_alloc_node() can be used as drop in
      replacement for alloc_bootmem_pages_node() and __alloc_bootmem_node(),
      which is done in the following patches.
      
      Link: http://lkml.kernel.org/r/1536927045-23536-15-git-send-email-rppt@linux.vnet.ibm.comSigned-off-by: NMike Rapoport <rppt@linux.vnet.ibm.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Chris Zankel <chris@zankel.net>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Greentime Hu <green.hu@gmail.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Guan Xuetao <gxt@pku.edu.cn>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
      Cc: Jonas Bonn <jonas@southpole.se>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Ley Foon Tan <lftan@altera.com>
      Cc: Mark Salter <msalter@redhat.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Matt Turner <mattst88@gmail.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Michal Hocko <mhocko@suse.com>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Palmer Dabbelt <palmer@sifive.com>
      Cc: Paul Burton <paul.burton@mips.com>
      Cc: Richard Kuo <rkuo@codeaurora.org>
      Cc: Richard Weinberger <richard@nod.at>
      Cc: Rich Felker <dalias@libc.org>
      Cc: Russell King <linux@armlinux.org.uk>
      Cc: Serge Semin <fancer.lancer@gmail.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vineet Gupta <vgupta@synopsys.com>
      Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      3913c8f9
    • M
      memblock: remove _virt from APIs returning virtual address · eb31d559
      Mike Rapoport 提交于
      The conversion is done using
      
      sed -i 's@memblock_virt_alloc@memblock_alloc@g' \
      	$(git grep -l memblock_virt_alloc)
      
      Link: http://lkml.kernel.org/r/1536927045-23536-8-git-send-email-rppt@linux.vnet.ibm.comSigned-off-by: NMike Rapoport <rppt@linux.vnet.ibm.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Chris Zankel <chris@zankel.net>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Greentime Hu <green.hu@gmail.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Guan Xuetao <gxt@pku.edu.cn>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
      Cc: Jonas Bonn <jonas@southpole.se>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Ley Foon Tan <lftan@altera.com>
      Cc: Mark Salter <msalter@redhat.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Matt Turner <mattst88@gmail.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Michal Hocko <mhocko@suse.com>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Palmer Dabbelt <palmer@sifive.com>
      Cc: Paul Burton <paul.burton@mips.com>
      Cc: Richard Kuo <rkuo@codeaurora.org>
      Cc: Richard Weinberger <richard@nod.at>
      Cc: Rich Felker <dalias@libc.org>
      Cc: Russell King <linux@armlinux.org.uk>
      Cc: Serge Semin <fancer.lancer@gmail.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vineet Gupta <vgupta@synopsys.com>
      Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      eb31d559
    • M
      memblock: rename memblock_alloc{_nid,_try_nid} to memblock_phys_alloc* · 9a8dd708
      Mike Rapoport 提交于
      Make it explicit that the caller gets a physical address rather than a
      virtual one.
      
      This will also allow using meblock_alloc prefix for memblock allocations
      returning virtual address, which is done in the following patches.
      
      The conversion is done using the following semantic patch:
      
      @@
      expression e1, e2, e3;
      @@
      (
      - memblock_alloc(e1, e2)
      + memblock_phys_alloc(e1, e2)
      |
      - memblock_alloc_nid(e1, e2, e3)
      + memblock_phys_alloc_nid(e1, e2, e3)
      |
      - memblock_alloc_try_nid(e1, e2, e3)
      + memblock_phys_alloc_try_nid(e1, e2, e3)
      )
      
      Link: http://lkml.kernel.org/r/1536927045-23536-7-git-send-email-rppt@linux.vnet.ibm.comSigned-off-by: NMike Rapoport <rppt@linux.vnet.ibm.com>
      Acked-by: NMichal Hocko <mhocko@suse.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Chris Zankel <chris@zankel.net>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Greentime Hu <green.hu@gmail.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Guan Xuetao <gxt@pku.edu.cn>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
      Cc: Jonas Bonn <jonas@southpole.se>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Ley Foon Tan <lftan@altera.com>
      Cc: Mark Salter <msalter@redhat.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Matt Turner <mattst88@gmail.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Palmer Dabbelt <palmer@sifive.com>
      Cc: Paul Burton <paul.burton@mips.com>
      Cc: Richard Kuo <rkuo@codeaurora.org>
      Cc: Richard Weinberger <richard@nod.at>
      Cc: Rich Felker <dalias@libc.org>
      Cc: Russell King <linux@armlinux.org.uk>
      Cc: Serge Semin <fancer.lancer@gmail.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vineet Gupta <vgupta@synopsys.com>
      Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      9a8dd708
    • M
      mm: nobootmem: remove dead code · b146ada2
      Mike Rapoport 提交于
      Several bootmem functions and macros are not used. Remove them.
      
      Link: http://lkml.kernel.org/r/1536927045-23536-6-git-send-email-rppt@linux.vnet.ibm.comSigned-off-by: NMike Rapoport <rppt@linux.vnet.ibm.com>
      Acked-by: NMichal Hocko <mhocko@suse.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Chris Zankel <chris@zankel.net>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Greentime Hu <green.hu@gmail.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Guan Xuetao <gxt@pku.edu.cn>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
      Cc: Jonas Bonn <jonas@southpole.se>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Ley Foon Tan <lftan@altera.com>
      Cc: Mark Salter <msalter@redhat.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Matt Turner <mattst88@gmail.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Palmer Dabbelt <palmer@sifive.com>
      Cc: Paul Burton <paul.burton@mips.com>
      Cc: Richard Kuo <rkuo@codeaurora.org>
      Cc: Richard Weinberger <richard@nod.at>
      Cc: Rich Felker <dalias@libc.org>
      Cc: Russell King <linux@armlinux.org.uk>
      Cc: Serge Semin <fancer.lancer@gmail.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vineet Gupta <vgupta@synopsys.com>
      Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      b146ada2
    • M
      mm: remove bootmem allocator implementation. · 355c45af
      Mike Rapoport 提交于
      All architectures have been converted to use MEMBLOCK + NO_BOOTMEM. The
      bootmem allocator implementation can be removed.
      
      Link: http://lkml.kernel.org/r/1536927045-23536-5-git-send-email-rppt@linux.vnet.ibm.comSigned-off-by: NMike Rapoport <rppt@linux.vnet.ibm.com>
      Acked-by: NMichal Hocko <mhocko@suse.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Chris Zankel <chris@zankel.net>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Greentime Hu <green.hu@gmail.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Guan Xuetao <gxt@pku.edu.cn>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
      Cc: Jonas Bonn <jonas@southpole.se>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Ley Foon Tan <lftan@altera.com>
      Cc: Mark Salter <msalter@redhat.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Matt Turner <mattst88@gmail.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Palmer Dabbelt <palmer@sifive.com>
      Cc: Paul Burton <paul.burton@mips.com>
      Cc: Richard Kuo <rkuo@codeaurora.org>
      Cc: Richard Weinberger <richard@nod.at>
      Cc: Rich Felker <dalias@libc.org>
      Cc: Russell King <linux@armlinux.org.uk>
      Cc: Serge Semin <fancer.lancer@gmail.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vineet Gupta <vgupta@synopsys.com>
      Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      355c45af
    • M
      mm: remove CONFIG_HAVE_MEMBLOCK · aca52c39
      Mike Rapoport 提交于
      All architecures use memblock for early memory management. There is no need
      for the CONFIG_HAVE_MEMBLOCK configuration option.
      
      [rppt@linux.vnet.ibm.com: of/fdt: fixup #ifdefs]
        Link: http://lkml.kernel.org/r/20180919103457.GA20545@rapoport-lnx
      [rppt@linux.vnet.ibm.com: csky: fixups after bootmem removal]
        Link: http://lkml.kernel.org/r/20180926112744.GC4628@rapoport-lnx
      [rppt@linux.vnet.ibm.com: remove stale #else and the code it protects]
        Link: http://lkml.kernel.org/r/1538067825-24835-1-git-send-email-rppt@linux.vnet.ibm.com
      Link: http://lkml.kernel.org/r/1536927045-23536-4-git-send-email-rppt@linux.vnet.ibm.comSigned-off-by: NMike Rapoport <rppt@linux.vnet.ibm.com>
      Acked-by: NMichal Hocko <mhocko@suse.com>
      Tested-by: NJonathan Cameron <jonathan.cameron@huawei.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Chris Zankel <chris@zankel.net>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Greentime Hu <green.hu@gmail.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Guan Xuetao <gxt@pku.edu.cn>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
      Cc: Jonas Bonn <jonas@southpole.se>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Ley Foon Tan <lftan@altera.com>
      Cc: Mark Salter <msalter@redhat.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Matt Turner <mattst88@gmail.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Palmer Dabbelt <palmer@sifive.com>
      Cc: Paul Burton <paul.burton@mips.com>
      Cc: Richard Kuo <rkuo@codeaurora.org>
      Cc: Richard Weinberger <richard@nod.at>
      Cc: Rich Felker <dalias@libc.org>
      Cc: Russell King <linux@armlinux.org.uk>
      Cc: Serge Semin <fancer.lancer@gmail.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vineet Gupta <vgupta@synopsys.com>
      Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      aca52c39
    • M
      mm: remove CONFIG_NO_BOOTMEM · b4a991ec
      Mike Rapoport 提交于
      All achitectures select NO_BOOTMEM which essentially becomes 'Y' for any
      kernel configuration and therefore it can be removed.
      
      [alexander.h.duyck@linux.intel.com: remove now defunct NO_BOOTMEM from depends list for deferred init]
        Link: http://lkml.kernel.org/r/20180925201814.3576.15105.stgit@localhost.localdomain
      Link: http://lkml.kernel.org/r/1536927045-23536-3-git-send-email-rppt@linux.vnet.ibm.comSigned-off-by: NMike Rapoport <rppt@linux.vnet.ibm.com>
      Signed-off-by: NAlexander Duyck <alexander.h.duyck@linux.intel.com>
      Acked-by: NMichal Hocko <mhocko@suse.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Chris Zankel <chris@zankel.net>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Greentime Hu <green.hu@gmail.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Guan Xuetao <gxt@pku.edu.cn>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
      Cc: Jonas Bonn <jonas@southpole.se>
      Cc: Jonathan Corbet <corbet@lwn.net>
      Cc: Ley Foon Tan <lftan@altera.com>
      Cc: Mark Salter <msalter@redhat.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Matt Turner <mattst88@gmail.com>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Palmer Dabbelt <palmer@sifive.com>
      Cc: Paul Burton <paul.burton@mips.com>
      Cc: Richard Kuo <rkuo@codeaurora.org>
      Cc: Richard Weinberger <richard@nod.at>
      Cc: Rich Felker <dalias@libc.org>
      Cc: Russell King <linux@armlinux.org.uk>
      Cc: Serge Semin <fancer.lancer@gmail.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Vineet Gupta <vgupta@synopsys.com>
      Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      b4a991ec
    • A
      percpu: remove PER_CPU_DEF_ATTRIBUTES macro · 69a60bc7
      Alexander Pateenok 提交于
      The macro is not used:
      
        $ grep -r PER_CPU_DEF_ATTRIBUTES
        include/linux/percpu-defs.h:	__PCPU_ATTRS(sec) PER_CPU_DEF_ATTRIBUTES __weak		\
        include/linux/percpu-defs.h:	__PCPU_ATTRS(sec) PER_CPU_DEF_ATTRIBUTES		\
        include/asm-generic/percpu.h:#ifndef PER_CPU_DEF_ATTRIBUTES
        include/asm-generic/percpu.h:#define PER_CPU_DEF_ATTRIBUTES
      
      It was added with b01e8dc3 ("alpha: fix percpu build breakage") and
      removed in 2009 with b01e8dc3..6088464c.
      
      Link: http://lkml.kernel.org/r/20180821164904.qqhcduimjznods66@K55DR.localdomainSigned-off-by: NAlexander Pateenok <pateenoc@gmail.com>
      Acked-by: NTejun Heo <tj@kernel.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      69a60bc7
    • G
      include/linux/signal.h: mark expected switch fall-throughs · 3819ddec
      Gustavo A. R. Silva 提交于
      In preparation to enabling -Wimplicit-fallthrough, mark switch cases where
      we are expecting to fall through.
      
      Link: http://lkml.kernel.org/r/20181013114847.GA3160@embeddedor.comSigned-off-by: NGustavo A. R. Silva <gustavo@embeddedor.com>
      Acked-by: NKees Cook <keescook@chromium.org>
      Reviewed-by: NMichael Ellerman <mpe@ellerman.id.au>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: "Eric W. Biederman" <ebiederm@xmission.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      3819ddec
    • G
      include/linux/compat.h: mark expected switch fall-throughs · 89976005
      Gustavo A. R. Silva 提交于
      In preparation to enabling -Wimplicit-fallthrough, mark switch cases where
      we are expecting to fall through.
      
      Link: http://lkml.kernel.org/r/20181013115048.GA3262@embeddedor.comSigned-off-by: NGustavo A. R. Silva <gustavo@embeddedor.com>
      Acked-by: NKees Cook <keescook@chromium.org>
      Cc: Michael Ellerman <mpe@ellerman.id.au>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      89976005
    • W
    • R
      linux/bitmap.h: relax comment on compile-time constant nbits · 41e7b166
      Rasmus Villemoes 提交于
      It's not clear what's so horrible about emitting a function call to handle
      a run-time sized bitmap.  Moreover, gcc also emits a function call for a
      compile-time-constant-but-huge nbits, so the comment isn't even accurate.
      
      Link: http://lkml.kernel.org/r/20180818131623.8755-6-linux@rasmusvillemoes.dkSigned-off-by: NRasmus Villemoes <linux@rasmusvillemoes.dk>
      Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
      Cc: Yury Norov <ynorov@caviumnetworks.com>
      Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
      Cc: Sudeep Holla <sudeep.holla@arm.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      41e7b166
    • R
      linux/bitmap.h: fix type of nbits in bitmap_shift_right() · d9873969
      Rasmus Villemoes 提交于
      Most other bitmap API, including the OOL version __bitmap_shift_right,
      take unsigned nbits.  This was accidentally left out from 2fbad299.
      
      Link: http://lkml.kernel.org/r/20180818131623.8755-5-linux@rasmusvillemoes.dk
      Fixes: 2fbad299 ("lib: bitmap: change bitmap_shift_right to take unsigned parameters")
      Signed-off-by: NRasmus Villemoes <linux@rasmusvillemoes.dk>
      Reported-by: NYury Norov <ynorov@caviumnetworks.com>
      Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
      Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
      Cc: Sudeep Holla <sudeep.holla@arm.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      d9873969
    • R
      linux/bitmap.h: remove redundant uses of small_const_nbits() · c8cebc55
      Rasmus Villemoes 提交于
      In the _zero, _fill and _copy functions, the small_const_nbits branch is
      redundant.  If nbits is small and const, gcc knows full well that
      BITS_TO_LONGS(nbits) is 1, so len is also a compile-time constant
      (sizeof(long)), and calling memset or memcpy with a length argument of
      sizeof(long) makes gcc generate the expected code anyway:
      
      #include <string.h>
      void a(unsigned long *x) { memset(x, 0, 8); }
      void b(unsigned long *x) { memset(x, 0xff, 8); }
      void c(unsigned long *x, const unsigned long *y) { memcpy(x, y, 8); }
      
      turns into
      
      0000000000000000 <a>:
         0:   48 c7 07 00 00 00 00    movq   $0x0,(%rdi)
         7:   c3                      retq
         8:   0f 1f 84 00 00 00 00    nopl   0x0(%rax,%rax,1)
         f:   00
      
      0000000000000010 <b>:
        10:   48 c7 07 ff ff ff ff    movq   $0xffffffffffffffff,(%rdi)
        17:   c3                      retq
        18:   0f 1f 84 00 00 00 00    nopl   0x0(%rax,%rax,1)
        1f:   00
      
      0000000000000020 <c>:
        20:   48 8b 06                mov    (%rsi),%rax
        23:   48 89 07                mov    %rax,(%rdi)
        26:   c3                      retq
      
      Link: http://lkml.kernel.org/r/20180818131623.8755-4-linux@rasmusvillemoes.dkSigned-off-by: NRasmus Villemoes <linux@rasmusvillemoes.dk>
      Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
      Cc: Yury Norov <ynorov@caviumnetworks.com>
      Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
      Cc: Sudeep Holla <sudeep.holla@arm.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      c8cebc55
    • R
      linux/bitmap.h: handle constant zero-size bitmaps correctly · 7275b097
      Rasmus Villemoes 提交于
      The static inlines in bitmap.h do not handle a compile-time constant
      nbits==0 correctly (they dereference the passed src or dst pointers,
      despite only 0 words being valid to access).  I had the 0-day buildbot
      chew on a patch [1] that would cause build failures for such cases without
      complaining, suggesting that we don't have any such users currently, at
      least for the 70 .config/arch combinations that was built.  Should any
      turn up, make sure they use the out-of-line versions, which do handle
      nbits==0 correctly.
      
      This is of course not the most efficient, but it's much less churn than
      teaching all the static inlines an "if (zero_const_nbits())", and since we
      don't have any current instances, this doesn't affect existing code at
      all.
      
      [1] lkml.kernel.org/r/20180815085539.27485-1-linux@rasmusvillemoes.dk
      
      Link: http://lkml.kernel.org/r/20180818131623.8755-3-linux@rasmusvillemoes.dkSigned-off-by: NRasmus Villemoes <linux@rasmusvillemoes.dk>
      Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
      Cc: Yury Norov <ynorov@caviumnetworks.com>
      Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
      Cc: Sudeep Holla <sudeep.holla@arm.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      7275b097