1. 10 Aug, 2017 1 commit
    • Peter Zijlstra's avatar
      locking/lockdep: Rework FS_RECLAIM annotation · d92a8cfc
      Peter Zijlstra authored
      A while ago someone, and I cannot find the email just now, asked if we
      could not implement the RECLAIM_FS inversion stuff with a 'fake' lock
      like we use for other things like workqueues etc. I think this should
      be possible which allows reducing the 'irq' states and will reduce the
      amount of __bfs() lookups we do.
      Removing the 1 IRQ state results in 4 less __bfs() walks per
      dependency, improving lockdep performance. And by moving this
      annotation out of the lockdep code it becomes easier for the mm people
      to extend.
      Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
      Cc: Byungchul Park <byungchul.park@lge.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Mel Gorman <mgorman@suse.de>
      Cc: Michal Hocko <mhocko@kernel.org>
      Cc: Nikolay Borisov <nborisov@suse.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: akpm@linux-foundation.org
      Cc: boqun.feng@gmail.com
      Cc: iamjoonsoo.kim@lge.com
      Cc: kernel-team@lge.com
      Cc: kirill@shutemov.name
      Cc: npiggin@gmail.com
      Cc: walken@google.com
      Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
  2. 06 Nov, 2013 1 commit
  3. 14 Feb, 2009 2 commits