> -----Original Message-----
> From: Stephen Hemminger <step...@networkplumber.org>
> Sent: Tuesday, June 23, 2020 4:20 PM
> To: Phil Yang <phil.y...@arm.com>
> Cc: dev@dpdk.org; Carrillo, Erik G <erik.g.carri...@intel.com>;
> d...@linux.vnet.ibm.com; honnappa.nagaraha...@arm.com;
> ruifeng.w...@arm.com; dharmik.thak...@arm.com; n...@arm.com
> Subject: Re: [dpdk-dev] [PATCH 2/3] eventdev: use c11 atomics for lcore
> timer armed flag
> 
> On Fri, 12 Jun 2020 19:19:57 +0800
> Phil Yang <phil.y...@arm.com> wrote:
> 
> >     /* Track which cores have actually armed a timer */
> >     struct {
> > -           rte_atomic16_t v;
> > +           int16_t v;
> >     } __rte_cache_aligned in_use[RTE_MAX_LCORE];
> 
> Do you really need this to be cache aligned (ie one per line)?

I believe I did this originally to keep a cache line from bouncing when two 
different cores are arming timers, so it's not strictly necessary.

> Why have a signed value for a reference count? Shouldn't it be unsigned?

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