1. 24 Apr, 2023 4 commits
    • Linus Torvalds's avatar
      iov: improve copy_iovec_from_user() code generation · 487c20b0
      Linus Torvalds authored
      Use the same pattern as the compat version of this code does: instead of
      copying the whole array to a kernel buffer and then having a separate
      phase of verifying it, just do it one entry at a time, verifying as you
      go.
      
      On Jens' /dev/zero readv() test this improves performance by ~6%.
      
      [ This was obviously triggered by Jens' ITER_UBUF updates series ]
      Reported-and-tested-by: default avatarJens Axboe <axboe@kernel.dk>
      Link: https://lore.kernel.org/all/de35d11d-bce7-e976-7372-1f2caf417103@kernel.dk/Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      487c20b0
    • Linus Torvalds's avatar
      Merge tag 'iter-ubuf.2-2023-04-21' of git://git.kernel.dk/linux · b9dff219
      Linus Torvalds authored
      Pull ITER_UBUF updates from Jens Axboe:
       "This turns singe vector imports into ITER_UBUF, rather than
        ITER_IOVEC.
      
        The former is more trivial to iterate and advance, and hence a bit
        more efficient. From some very unscientific testing, ~60% of all iovec
        imports are single vector"
      
      * tag 'iter-ubuf.2-2023-04-21' of git://git.kernel.dk/linux:
        iov_iter: Mark copy_compat_iovec_from_user() noinline
        iov_iter: import single vector iovecs as ITER_UBUF
        iov_iter: convert import_single_range() to ITER_UBUF
        iov_iter: overlay struct iovec and ubuf/len
        iov_iter: set nr_segs = 1 for ITER_UBUF
        iov_iter: remove iov_iter_iovec()
        iov_iter: add iter_iov_addr() and iter_iov_len() helpers
        ALSA: pcm: check for user backed iterator, not specific iterator type
        IB/qib: check for user backed iterator, not specific iterator type
        IB/hfi1: check for user backed iterator, not specific iterator type
        iov_iter: add iter_iovec() helper
        block: ensure bio_alloc_map_data() deals with ITER_UBUF correctly
      b9dff219
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm · d88867a2
      Linus Torvalds authored
      Pull ARM development updates from Russell King:
       "Four changes for v6.4:
      
         - simplify the path to the top vmlinux
      
         - three patches to fix vfp with instrumentation enabled (eg lockdep)"
      
      * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
        ARM: 9294/2: vfp: Fix broken softirq handling with instrumentation enabled
        ARM: 9293/1: vfp: Pass successful return address via register R3
        ARM: 9292/1: vfp: Pass thread_info pointer to vfp_support_entry
        ARM: 9291/1: decompressor: simplify the path to the top vmlinux
      d88867a2
    • Ruihan Li's avatar
      scripts: Remove ICC-related dead code · 1a261a6e
      Ruihan Li authored
      Intel compiler support has already been completely removed in commit
      95207db8 ("Remove Intel compiler support").  However, it appears
      that there is still some ICC-related code in scripts/cc-version.sh.
      There is no harm in leaving the code as it is, but removing the dead
      code makes the codebase a bit cleaner.
      
      Hopefully all ICC-related stuff in the build scripts will be removed
      after this commit, given the grep output as below:
      
      	(linux/scripts) $ grep -i -w -R 'icc'
      	cc-version.sh:ICC)
      	cc-version.sh:	min_version=$($min_tool_version icc)
      	dtc/include-prefixes/arm64/qcom/sm6350.dtsi:#include <dt-bindings/interconnect/qcom,icc.h>
      
      Fixes: 95207db8 ("Remove Intel compiler support")
      Signed-off-by: default avatarRuihan Li <lrh2000@pku.edu.cn>
      Reviewed-by: default avatarNick Desaulniers <ndesaulniers@google.com>
      Reviewed-by: default avatarNathan Chancellor <nathan@kernel.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      1a261a6e
  2. 23 Apr, 2023 9 commits
  3. 22 Apr, 2023 2 commits
  4. 21 Apr, 2023 12 commits
  5. 20 Apr, 2023 13 commits