• Linus Torvalds's avatar
    Merge tag 'riscv-for-linus-4.15-rc2_cleanups' of… · e1ba1c99
    Linus Torvalds authored
    Merge tag 'riscv-for-linus-4.15-rc2_cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/linux
    
    Pull RISC-V cleanups and ABI fixes from Palmer Dabbelt:
     "This contains a handful of small cleanups that are a result of
      feedback that didn't make it into our original patch set, either
      because the feedback hadn't been given yet, I missed the original
      emails, or we weren't ready to submit the changes yet.
    
      I've been maintaining the various cleanup patch sets I have as their
      own branches, which I then merged together and signed. Each merge
      commit has a short summary of the changes, and each branch is based on
      your latest tag (4.15-rc1, in this case). If this isn't the right way
      to do this then feel free to suggest something else, but it seems sane
      to me.
    
      Here's a short summary of the changes, roughly in order of how
      interesting they are.
    
       - libgcc.h has been moved from include/lib, where it's the only
         member, to include/linux. This is meant to avoid tab completion
         conflicts.
    
       - VDSO entries for clock_get/gettimeofday/getcpu have been added.
         These are simple syscalls now, but we want to let glibc use them
         from the start so we can make them faster later.
    
       - A VDSO entry for instruction cache flushing has been added so
         userspace can flush the instruction cache.
    
       - The VDSO symbol versions for __vdso_cmpxchg{32,64} have been
         removed, as those VDSO entries don't actually exist.
    
       - __io_writes has been corrected to respect the given type.
    
       - A new READ_ONCE in arch_spin_is_locked().
    
       - __test_and_op_bit_ord() is now actually ordered.
    
       - Various small fixes throughout the tree to enable allmodconfig to
         build cleanly.
    
       - Removal of some dead code in our atomic support headers.
    
       - Improvements to various comments in our atomic support headers"
    
    * tag 'riscv-for-linus-4.15-rc2_cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/linux: (23 commits)
      RISC-V: __io_writes should respect the length argument
      move libgcc.h to include/linux
      RISC-V: Clean up an unused include
      RISC-V: Allow userspace to flush the instruction cache
      RISC-V: Flush I$ when making a dirty page executable
      RISC-V: Add missing include
      RISC-V: Use define for get_cycles like other architectures
      RISC-V: Provide stub of setup_profiling_timer()
      RISC-V: Export some expected symbols for modules
      RISC-V: move empty_zero_page definition to C and export it
      RISC-V: io.h: type fixes for warnings
      RISC-V: use RISCV_{INT,SHORT} instead of {INT,SHORT} for asm macros
      RISC-V: use generic serial.h
      RISC-V: remove spin_unlock_wait()
      RISC-V: `sfence.vma` orderes the instruction cache
      RISC-V: Add READ_ONCE in arch_spin_is_locked()
      RISC-V: __test_and_op_bit_ord should be strongly ordered
      RISC-V: Remove smb_mb__{before,after}_spinlock()
      RISC-V: Remove __smp_bp__{before,after}_atomic
      RISC-V: Comment on why {,cmp}xchg is ordered how it is
      ...
    e1ba1c99
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