1. 30 Sep, 2016 1 commit
    • Paul Burton's avatar
      MIPS: Remove compact branch policy Kconfig entries · 9b30cac4
      Paul Burton authored
      commit b03c1e3b upstream.
      
      Commit c1a0e9bc ("MIPS: Allow compact branch policy to be changed")
      added Kconfig entries allowing for the compact branch policy used by the
      compiler for MIPSr6 kernels to be specified. This can be useful for
      debugging, particularly in systems where compact branches have recently
      been introduced.
      
      Unfortunately mainline gcc 5.x supports MIPSr6 but not the
      -mcompact-branches compiler flag, leading to MIPSr6 kernels failing to
      build with gcc 5.x with errors such as:
      
        mipsel-linux-gnu-gcc: error: unrecognized command line option '-mcompact-branches=optimal'
        make[2]: *** [kernel/bounds.s] Error 1
      
      Fixing this by hiding the Kconfig entry behind another seems to be more
      hassle than it's worth, as MIPSr6 & compact branches have been around
      for a while now and if policy does need to be set for debug it can be
      done easily enough with KCFLAGS. Therefore remove the compact branch
      policy Kconfig entries & their handling in the Makefile.
      
      This reverts commit c1a0e9bc ("MIPS: Allow compact branch policy to
      be changed").
      Signed-off-by: default avatarPaul Burton <paul.burton@imgtec.com>
      Reported-by: default avatarkbuild test robot <fengguang.wu@intel.com>
      Fixes: c1a0e9bc ("MIPS: Allow compact branch policy to be changed")
      Cc: linux-mips@linux-mips.org
      Patchwork: https://patchwork.linux-mips.org/patch/14241/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      9b30cac4
  2. 11 Nov, 2015 1 commit
    • Paul Burton's avatar
      MIPS: CPS: Early debug using an ns16550-compatible UART · 609cf6f2
      Paul Burton authored
      Provide support for outputting early debug information, in the form of
      various register values should an exception occur, during the early
      bringup of secondary cores. This code requires an ns16550-compatible
      UART accessible from the secondary core, and is written in assembly due
      to the environment in which such early exceptions occur where way may
      not have a stack, be coherent or even have initialised caches.
      
      [ralf@linux-mips.org: Fix merge conflict.]
      Signed-off-by: default avatarPaul Burton <paul.burton@imgtec.com>
      Cc: linux-mips@linux-mips.org
      Cc: Steven J. Hill <Steven.Hill@imgtec.com>
      Cc: Andrew Bresticker <abrestic@chromium.org>
      Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
      Cc: Maciej W. Rozycki <macro@linux-mips.org>
      Cc: Jason Cooper <jason@lakedaemon.net>
      Cc: linux-kernel@vger.kernel.org
      Cc: James Hogan <james.hogan@imgtec.com>
      Cc: Markos Chandras <markos.chandras@imgtec.com>
      Patchwork: https://patchwork.linux-mips.org/patch/11202/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      609cf6f2
  3. 26 Oct, 2015 2 commits
  4. 26 Aug, 2015 1 commit
  5. 17 Feb, 2015 1 commit
    • Markos Chandras's avatar
      MIPS: kernel: elf: Improve the overall ABI and FPU mode checks · 46490b57
      Markos Chandras authored
      The previous implementation did not cover all possible FPU combinations
      and it silently allowed ABI incompatible objects to be loaded with the
      wrong ABI. For example, the previous logic would set the FP_64 ABI as
      the matching ABI for an FP_XX object combined with an FP_64A object.
      This was wrong, and the matching ABI should have been FP_64A.
      The previous logic is now replaced with a new one which determines
      the appropriate FPU mode to be used rather than the FP ABI. This has
      the advantage that the entire logic is much simpler since it is the FPU
      mode we are interested in rather than the FP ABI resulting to code
      simplifications. This also removes the now obsolete FP32XX_HYBRID_FPRS
      option.
      
      Cc: Matthew Fortune <Matthew.Fortune@imgtec.com>
      Cc: Paul Burton <paul.burton@imgtec.com>
      Signed-off-by: default avatarMarkos Chandras <markos.chandras@imgtec.com>
      46490b57
  6. 24 Nov, 2014 1 commit
    • Paul Burton's avatar
      MIPS: Kconfig option to better exercise/debug hybrid FPRs · f4af6fb2
      Paul Burton authored
      The hybrid FPR scheme exists to allow for compatibility between existing
      FP32 code and newly compiled FP64A code. Such code should hopefully be
      rare in the real world, and for the moment is difficult to come across.
      All code except that built for the FP64 ABI can correctly execute using
      the hybrid FPR scheme, so debugging the hybrid FPR implementation can
      be eased by forcing all such code to use it. This is undesirable in
      general due to the trap & emulate overhead of the hybrid FPR
      implementation, but is a very useful option to have for debugging.
      Signed-off-by: default avatarPaul Burton <paul.burton@imgtec.com>
      Cc: linux-mips@linux-mips.org
      Cc: Alexander Viro <viro@zeniv.linux.org.uk>
      Cc: linux-fsdevel@vger.kernel.org
      Cc: linux-kernel@vger.kernel.org
      Patchwork: https://patchwork.linux-mips.org/patch/7680/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      f4af6fb2
  7. 23 May, 2014 1 commit
    • Ralf Baechle's avatar
      MIPS: MT: Remove SMTC support · b633648c
      Ralf Baechle authored
      Nobody is maintaining SMTC anymore and there also seems to be no userbase.
      Which is a pity - the SMTC technology primarily developed by Kevin D.
      Kissell <kevink@paralogos.com> is an ingenious demonstration for the MT
      ASE's power and elegance.
      
      Based on Markos Chandras <Markos.Chandras@imgtec.com> patch
      https://patchwork.linux-mips.org/patch/6719/ which while very similar did
      no longer apply cleanly when I tried to merge it plus some additional
      post-SMTC cleanup - SMTC was a feature as tricky to remove as it was to
      merge once upon a time.
      Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      b633648c
  8. 31 Mar, 2014 1 commit
  9. 29 Oct, 2013 1 commit
  10. 04 Jul, 2013 1 commit
  11. 16 Apr, 2012 1 commit
  12. 25 May, 2011 1 commit
  13. 21 Jan, 2011 1 commit
    • David Rientjes's avatar
      kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT · 6a108a14
      David Rientjes authored
      The meaning of CONFIG_EMBEDDED has long since been obsoleted; the option
      is used to configure any non-standard kernel with a much larger scope than
      only small devices.
      
      This patch renames the option to CONFIG_EXPERT in init/Kconfig and fixes
      references to the option throughout the kernel.  A new CONFIG_EMBEDDED
      option is added that automatically selects CONFIG_EXPERT when enabled and
      can be used in the future to isolate options that should only be
      considered for embedded systems (RISC architectures, SLOB, etc).
      
      Calling the option "EXPERT" more accurately represents its intention: only
      expert users who understand the impact of the configuration changes they
      are making should enable it.
      Reviewed-by: default avatarIngo Molnar <mingo@elte.hu>
      Acked-by: default avatarDavid Woodhouse <david.woodhouse@intel.com>
      Signed-off-by: default avatarDavid Rientjes <rientjes@google.com>
      Cc: Greg KH <gregkh@suse.de>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Robin Holt <holt@sgi.com>
      Cc: <linux-arch@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      6a108a14
  14. 29 Oct, 2010 1 commit
  15. 27 Feb, 2010 2 commits
  16. 17 Dec, 2009 2 commits
  17. 12 Dec, 2008 1 commit
  18. 30 Jul, 2008 1 commit
  19. 28 Apr, 2008 1 commit
  20. 22 Oct, 2007 1 commit
  21. 06 Jul, 2007 1 commit
  22. 26 Feb, 2007 1 commit
  23. 20 Feb, 2007 1 commit
  24. 06 Feb, 2007 1 commit
  25. 13 Jul, 2006 1 commit
  26. 27 Apr, 2006 1 commit
  27. 16 Apr, 2005 1 commit
    • Linus Torvalds's avatar
      Linux-2.6.12-rc2 · 1da177e4
      Linus Torvalds authored
      Initial git repository build. I'm not bothering with the full history,
      even though we have it. We can create a separate "historical" git
      archive of that later if we want to, and in the meantime it's about
      3.2GB when imported into git - space that would just make the early
      git days unnecessarily complicated, when we don't have a lot of good
      infrastructure for it.
      
      Let it rip!
      1da177e4