* about last level cache on big little cpu
@ 2014-02-03 14:51 Alex Shi
2014-02-03 15:03 ` Morten Rasmussen
2014-02-03 15:56 ` Sudeep Holla
0 siblings, 2 replies; 3+ messages in thread
From: Alex Shi @ 2014-02-03 14:51 UTC (permalink / raw)
To: linux-arm-kernel
Does all the big.LITTLE cpu share the same llc? or it depends on
different vendor's products?
--
Thanks
Alex
^ permalink raw reply [flat|nested] 3+ messages in thread* about last level cache on big little cpu 2014-02-03 14:51 about last level cache on big little cpu Alex Shi @ 2014-02-03 15:03 ` Morten Rasmussen 2014-02-03 15:56 ` Sudeep Holla 1 sibling, 0 replies; 3+ messages in thread From: Morten Rasmussen @ 2014-02-03 15:03 UTC (permalink / raw) To: linux-arm-kernel On Mon, Feb 03, 2014 at 02:51:08PM +0000, Alex Shi wrote: > Does all the big.LITTLE cpu share the same llc? or it depends on > different vendor's products? No. I don't know of any big.LITTLE implementation that does have a shared last level cache. TC2 has per cluster L2 caches as last level caches, so no cache is shared between the big and little clusters. Morten ^ permalink raw reply [flat|nested] 3+ messages in thread
* about last level cache on big little cpu 2014-02-03 14:51 about last level cache on big little cpu Alex Shi 2014-02-03 15:03 ` Morten Rasmussen @ 2014-02-03 15:56 ` Sudeep Holla 1 sibling, 0 replies; 3+ messages in thread From: Sudeep Holla @ 2014-02-03 15:56 UTC (permalink / raw) To: linux-arm-kernel On 03/02/14 14:51, Alex Shi wrote: > Does all the big.LITTLE cpu share the same llc? or it depends on > different vendor's products? > It depends on implementation. e.g. on Cortex-A7 L2 is optional. So there can be big.LITTLE system with CA15(with L2) and CA7(without L2). In general depends are the choice of the processors in bL and if L2 is mandatory or optional on those processors. Regards, Sudeep ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2014-02-03 15:56 UTC | newest] Thread overview: 3+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2014-02-03 14:51 about last level cache on big little cpu Alex Shi 2014-02-03 15:03 ` Morten Rasmussen 2014-02-03 15:56 ` Sudeep Holla
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s).