1. 30 Oct, 2021 1 commit
    • Arnd Bergmann's avatar
      locking: Remove spin_lock_flags() etc · f98a3dcc
      Arnd Bergmann authored
      parisc, ia64 and powerpc32 are the only remaining architectures that
      provide custom arch_{spin,read,write}_lock_flags() functions, which are
      meant to re-enable interrupts while waiting for a spinlock.
      
      However, none of these can actually run into this codepath, because
      it is only called on architectures without CONFIG_GENERIC_LOCKBREAK,
      or when CONFIG_DEBUG_LOCK_ALLOC is set without CONFIG_LOCKDEP, and none
      of those combinations are possible on the three architectures.
      
      Going back in the git history, it appears that arch/mn10300 may have
      been able to run into this code path, but there is a good chance that
      it never worked. On the architectures that still exist, it was
      already impossible to hit back in 2008 after the introduction of
      CONFIG_GENERIC_LOCKBREAK, and possibly earlier.
      
      As this is all dead code, just remove it and the helper functions built
      around it. For arch/ia64, the inline asm could be cleaned up, but
      it seems safer to leave it untouched.
      Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
      Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Acked-by: Helge Deller <deller@gmx.de>  # parisc
      Link: https://lore.kernel.org/r/20211022120058.1031690-1-arnd@kernel.org
      f98a3dcc
  2. 19 Oct, 2021 5 commits
  3. 07 Oct, 2021 24 commits
  4. 01 Oct, 2021 10 commits