Messages in this thread | | | Date | Wed, 24 Jul 2002 17:45:35 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] updated low-latency zap_page_range |
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Robert Love wrote: > > ... > +static inline void cond_resched_lock(spinlock_t * lock) > +{ > + if (need_resched() && preempt_count() == 1) { > + _raw_spin_unlock(lock); > + preempt_enable_no_resched(); > + __cond_resched(); > + spin_lock(lock); > + } > +}
Maybe I'm being thick. How come a simple spin_unlock() in here won't do the right thing?
And this won't _really_ compile to nothing with CONFIG_PREEMPT=n, will it? It just does nothing because preempt_count() is zero?
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