[lkml]   [2011]   [Jan]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [PATCH 00/25] mm: Preemptibility -v7
    Peter Zijlstra <> writes:

    > This patch-set makes part of the mm a lot more preemptible. It converts
    > i_mmap_lock and anon_vma->lock to mutexes and makes mmu_gather fully
    > preemptible.
    > The main motivation was making mm_take_all_locks() preemptible, since it
    > appears people are nesting hundreds of spinlocks there.

    Just curious: why is mm_take_all_locks() a problem? As far as I can see
    it's just used when starting KVM or GRU the first time. Is that a common


    Andi Kleen
    Intel Open Source Technology Center

     \ /
      Last update: 2011-01-25 21:47    [W:2.837 / U:0.588 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site