> -----Original Message----- > From: ext Taras Kondratiuk [mailto:taras.kondrat...@linaro.org] > Sent: Wednesday, March 11, 2015 5:18 PM > To: Savolainen, Petri (Nokia - FI/Espoo); ext Christophe Milard; lng- > o...@lists.linaro.org > Subject: Re: [lng-odp] odp_cpu_count() vs odp_cpumask size > > On 03/11/2015 04:46 PM, Savolainen, Petri (Nokia - FI/Espoo) wrote: > > Continuation of cpumask discussion on the call... For creating arbitrary > > masks (e.g. fill in a mask with CPU ids of another ODP program in the > > system, or testing all possible mask bits), we may need two more calls: > > > > /** > > > > * @return Maximum number of CPUs a mask can hold > > > > */ > > > > int odp_cpumask_max_cpus(void) > > > > /** > > > > * Set all CPUs in the mask > > > > * > > > > * After the call, the mask has odp_cpumask_max_cpus() CPUs set. > > > > * @note CPU numbering may not be contiguous. > > > > */ > > > > void odp_cpumask_setall(odp_cpumask_t *mask) > > > > -Petri > > > > *From:*lng-odp-boun...@lists.linaro.org > > [mailto:lng-odp-boun...@lists.linaro.org] *On Behalf Of *ext Savolainen, > > Petri (Nokia - FI/Espoo) > > *Sent:* Wednesday, March 11, 2015 2:09 PM > > *To:* ext Christophe Milard; lng-odp@lists.linaro.org > > *Subject:* Re: [lng-odp] odp_cpu_count() vs odp_cpumask size > > > > Actually, this is equal to odp_cpu_max(): > > > > odp_cpumask_t mask; > > > > odp_cpu_mask(&mask) > > > > odp_cpumask_last(&mask) > > > > So maybe odp_cpu_mask() is only new thing we need. > > Hi Petri > > It is not clear to me why do we need odp_cpu_* and odp_cpumask_* API. > > They are used now to create threads and set CPU affinity. But this is > done by ODP helpers, because it is out of ODP scope. Shouldn't 'cpu' and > 'cpumask' be a part of helpers too?
The original idea was to use cpumask in definition of odp_schedule_group_t (still on todo list). I need go through that use case and see if e.g. a thread mask would work instead. E.g. odp_cpu_id() is good for debugging (e.g. that thread pinning is working). -Petri _______________________________________________ lng-odp mailing list lng-odp@lists.linaro.org http://lists.linaro.org/mailman/listinfo/lng-odp
