lkml.org 
[lkml]   [2010]   [Mar]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH 2/3] sched: enforce per-cpu utilization limits on runtime balancing
    > From: Peter Zijlstra <peterz@infradead.org>
    > Date: Thu, Feb 25, 2010 09:28:24PM +0100
    >
    > On Tue, 2010-02-23 at 19:56 +0100, Fabio Checconi wrote:
    > > +static inline void double_spin_lock(raw_spinlock_t *lock1,
    > > + raw_spinlock_t *lock2)
    > > + __acquires(lock1)
    > > + __acquires(lock2)
    > > +{
    > > + if (lock1 < lock2) {
    > > + raw_spin_lock(lock1);
    > > + raw_spin_lock_nested(lock2, SINGLE_DEPTH_NESTING);
    > > + } else {
    > > + raw_spin_lock(lock2);
    > > + raw_spin_lock_nested(lock1, SINGLE_DEPTH_NESTING);
    > > + }
    > > +}
    > > +
    > > +static inline void double_spin_unlock(raw_spinlock_t *lock1,
    > > + raw_spinlock_t *lock2)
    > > + __releases(lock1)
    > > + __releases(lock2)
    > > +{
    > > + raw_spin_unlock(lock1);
    > > + lock_set_subclass(&lock2->dep_map, 0, _RET_IP_);
    > > + raw_spin_unlock(lock2);
    > > +}
    >
    > If you release both there is no need to re-set the subclass.

    Will fix, thanks.


    \
     
     \ /
      Last update: 2010-03-03 17:49    [W:0.022 / U:3.464 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site