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From: "Sridhar, Kanchana P" <kanchana.p.sridhar@intel.com>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-mm@kvack.org" <linux-mm@kvack.org>,
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	"Feghali, Wajdi K" <wajdi.k.feghali@intel.com>,
	"Gopal, Vinodh" <vinodh.gopal@intel.com>,
	"Sridhar, Kanchana P" <kanchana.p.sridhar@intel.com>
Subject: RE: [RFC PATCH v1 01/13] crypto: acomp - Add a poll() operation to acomp_alg and acomp_req
Date: Sat, 19 Oct 2024 19:10:19 +0000	[thread overview]
Message-ID: <SJ0PR11MB56787511CBC1AC1C588BD46AC9412@SJ0PR11MB5678.namprd11.prod.outlook.com> (raw)
In-Reply-To: <ZxL7KUGUroiOYssf@gondor.apana.org.au>


> -----Original Message-----
> From: Herbert Xu <herbert@gondor.apana.org.au>
> Sent: Friday, October 18, 2024 5:20 PM
> To: Sridhar, Kanchana P <kanchana.p.sridhar@intel.com>
> Cc: linux-kernel@vger.kernel.org; linux-mm@kvack.org;
> hannes@cmpxchg.org; yosryahmed@google.com; nphamcs@gmail.com;
> chengming.zhou@linux.dev; usamaarif642@gmail.com;
> ryan.roberts@arm.com; Huang, Ying <ying.huang@intel.com>;
> 21cnbao@gmail.com; akpm@linux-foundation.org; linux-
> crypto@vger.kernel.org; davem@davemloft.net; clabbe@baylibre.com;
> ardb@kernel.org; ebiggers@google.com; surenb@google.com; Accardi,
> Kristen C <kristen.c.accardi@intel.com>; zanussi@kernel.org;
> viro@zeniv.linux.org.uk; brauner@kernel.org; jack@suse.cz;
> mcgrof@kernel.org; kees@kernel.org; joel.granados@kernel.org;
> bfoster@redhat.com; willy@infradead.org; linux-fsdevel@vger.kernel.org;
> Feghali, Wajdi K <wajdi.k.feghali@intel.com>; Gopal, Vinodh
> <vinodh.gopal@intel.com>
> Subject: Re: [RFC PATCH v1 01/13] crypto: acomp - Add a poll() operation to
> acomp_alg and acomp_req
> 
> On Fri, Oct 18, 2024 at 11:01:10PM +0000, Sridhar, Kanchana P wrote:
> >
> > Thanks for your code review comments. Are you referring to how the
> > async/poll interface is enabled at the level of say zswap (by setting a
> > flag in the acomp_req), followed by the iaa_crypto driver testing for
> > the flag and submitting the request and returning -EINPROGRESS.
> > Wouldn't we still need a separate API to do the polling?
> 
> Correct me if I'm wrong, but I think what you want to do is this:
> 
> 	crypto_acomp_compress(req)
> 	crypto_acomp_poll(req)
> 
> So instead of adding this interface, where the poll essentially
> turns the request synchronous, just move this logic into the driver,
> based on a flag bit in req.

Thanks Herbert, for this suggestion. I understand this better now,
and will work with Kristen for addressing this in v2.

Thanks,
Kanchana

> 
> Cheers,
> --
> Email: Herbert Xu <herbert@gondor.apana.org.au>
> Home Page: http://gondor.apana.org.au/~herbert/
> PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt


  reply	other threads:[~2024-10-19 19:10 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-10-18  6:40 [RFC PATCH v1 00/13] zswap IAA compress batching Kanchana P Sridhar
2024-10-18  6:40 ` [RFC PATCH v1 01/13] crypto: acomp - Add a poll() operation to acomp_alg and acomp_req Kanchana P Sridhar
2024-10-18  7:55   ` Herbert Xu
2024-10-18 23:01     ` Sridhar, Kanchana P
2024-10-19  0:19       ` Herbert Xu
2024-10-19 19:10         ` Sridhar, Kanchana P [this message]
2024-10-18  6:40 ` [RFC PATCH v1 02/13] crypto: iaa - Add support for irq-less crypto async interface Kanchana P Sridhar
2024-10-18  6:40 ` [RFC PATCH v1 03/13] crypto: testmgr - Add crypto testmgr acomp poll support Kanchana P Sridhar
2024-10-18  6:40 ` [RFC PATCH v1 04/13] mm: zswap: zswap_compress()/decompress() can submit, then poll an acomp_req Kanchana P Sridhar
2024-10-23  0:48   ` Yosry Ahmed
2024-10-23  2:01     ` Sridhar, Kanchana P
2024-10-18  6:40 ` [RFC PATCH v1 05/13] crypto: iaa - Make async mode the default Kanchana P Sridhar
2024-10-18  6:40 ` [RFC PATCH v1 06/13] crypto: iaa - Disable iaa_verify_compress by default Kanchana P Sridhar
2024-10-18  6:40 ` [RFC PATCH v1 07/13] crypto: iaa - Change cpu-to-iaa mappings to evenly balance cores to IAAs Kanchana P Sridhar
2024-10-18  6:40 ` [RFC PATCH v1 08/13] crypto: iaa - Distribute compress jobs to all IAA devices on a NUMA node Kanchana P Sridhar
2024-10-18  6:40 ` [RFC PATCH v1 09/13] mm: zswap: Config variable to enable compress batching in zswap_store() Kanchana P Sridhar
2024-10-23  0:49   ` Yosry Ahmed
2024-10-23  2:17     ` Sridhar, Kanchana P
2024-10-23  2:58       ` Herbert Xu
2024-10-23  3:06         ` Sridhar, Kanchana P
2024-10-23 18:12       ` Yosry Ahmed
2024-10-23 20:32         ` Sridhar, Kanchana P
2024-10-18  6:40 ` [RFC PATCH v1 10/13] mm: zswap: Create multiple reqs/buffers in crypto_acomp_ctx if platform has IAA Kanchana P Sridhar
2024-10-23  0:51   ` Yosry Ahmed
2024-10-23  2:19     ` Sridhar, Kanchana P
2024-10-18  6:40 ` [RFC PATCH v1 11/13] mm: swap: Add IAA batch compression API swap_crypto_acomp_compress_batch() Kanchana P Sridhar
2024-10-23  0:53   ` Yosry Ahmed
2024-10-23  2:21     ` Sridhar, Kanchana P
2024-10-18  6:41 ` [RFC PATCH v1 12/13] mm: zswap: Compress batching with Intel IAA in zswap_store() of large folios Kanchana P Sridhar
2024-10-18  6:41 ` [RFC PATCH v1 13/13] mm: vmscan, swap, zswap: Compress batching of folios in shrink_folio_list() Kanchana P Sridhar
2024-10-28 14:41   ` Joel Granados
2024-10-28 18:53     ` Sridhar, Kanchana P
2024-10-23  0:56 ` [RFC PATCH v1 00/13] zswap IAA compress batching Yosry Ahmed
2024-10-23  2:53   ` Sridhar, Kanchana P
2024-10-23 18:15     ` Yosry Ahmed
2024-10-23 20:34       ` Sridhar, Kanchana P

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