On Tue, Jul 17, 2007 at 12:32:43PM -0400, Josef Sipek wrote:
> On Thu, Jun 14, 2007 at 11:58:22PM +0200, Peter Zijlstra wrote:
> > Provide an accurate version of percpu_counter_read.
> >
> > Should we go and replace the current use of percpu_counter_sum()
> > with percpu_counter_sum_positive(), and call this new primitive
> > percpu_counter_sum() instead?
> >
> > Signed-off-by: Peter Zijlstra <[email protected]>
> > ---
> > include/linux/percpu_counter.h | 18 +++++++++++++++++-
> > lib/percpu_counter.c | 6 +++---
> > 2 files changed, 20 insertions(+), 4 deletions(-)
> >
> > Index: linux-2.6/include/linux/percpu_counter.h
> > ===================================================================
> > --- linux-2.6.orig/include/linux/percpu_counter.h 2007-05-23 20:37:54.000000000 +0200
> > +++ linux-2.6/include/linux/percpu_counter.h 2007-05-23 20:38:09.000000000 +0200
> > @@ -35,7 +35,18 @@ void percpu_counter_destroy(struct percp
> > void percpu_counter_set(struct percpu_counter *fbc, s64 amount);
> > void __percpu_counter_mod(struct percpu_counter *fbc, s32 amount, s32 batch);
> > void __percpu_counter_mod64(struct percpu_counter *fbc, s64 amount, s32 batch);
> > -s64 percpu_counter_sum(struct percpu_counter *fbc);
> > +s64 __percpu_counter_sum(struct percpu_counter *fbc);
> > +
> > +static inline s64 percpu_counter_sum(struct percpu_counter *fbc)
> > +{
> > + s64 ret = __percpu_counter_sum(fbc);
> > + return ret < 0 ? 0 : ret;
>
> max(0, ret) maybe?
>
> Josef 'Jeff' Sipek.
Ok, replying to email that's more than a month old may not be the best idea
:)
Josef 'Jeff' Sipek.
--
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