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Date: Sat, 18 Jan 2014 20:11:45 +0800 From: Herbert Xu <herbert@...dor.apana.org.au> To: Tadeusz Struk <tadeusz.struk@...el.com> Cc: linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org, davem@...emloft.net Subject: Re: [PATCH RFC 1/2] crypto: Simple crypto algorithm load balancer On Sat, Jan 18, 2014 at 12:46:08AM +0000, Tadeusz Struk wrote: > Hi, > In case of multiple crypto devices implementing the same algorithms > the arbitration, which one to use is based on the cra_priority. > Currently the algorithm with the highest priority is always be used. > In case of two algorithms with the same priority the one added last is used. > There is no load balancing and on a busy system there can be a situation when > there more crypto accelerators, but only one is used for all crypto jobs > and the others sit idle. > This patch implements a simple load balancing based on the priority > of an algorithm and its usage refctr. The distribution for 10 algorithms > and 3000000 tfm_alloc allocations is as follows: Have you looked at pcrypt and whether it can be extended to handle this or perhaps something similar to pcrypt can be created? Hard-coding this into the API seems a bit heavy-handed. Cheers, -- Email: Herbert Xu <herbert@...dor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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