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Tue, 03 Jan 2023 11:15:59 -0800 Received: from twshared7043.05.ash9.facebook.com (2620:10d:c085:108::8) by mail.thefacebook.com (2620:10d:c085:11d::5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.34; Tue, 3 Jan 2023 11:15:58 -0800 Received: by devbig007.nao1.facebook.com (Postfix, from userid 544533) id 8501CE1F5DFE; Tue, 3 Jan 2023 11:15:53 -0800 (PST) From: Keith Busch To: , , Matthew Wilcox , Christoph Hellwig CC: Tony Battersby , Kernel Team , Keith Busch Subject: [PATCHv3 00/12] dmapool enhancements Date: Tue, 3 Jan 2023 11:15:39 -0800 Message-ID: <20230103191551.3254778-1-kbusch@meta.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-FB-Internal: Safe Content-Type: text/plain X-Proofpoint-ORIG-GUID: 4YCUURSpUnADm8QHZ7q9l6wbYufFwOBa X-Proofpoint-GUID: 4YCUURSpUnADm8QHZ7q9l6wbYufFwOBa X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.923,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2023-01-03_07,2023-01-03_02,2022-06-22_01 X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: D4BB62000A X-Rspam-User: X-Stat-Signature: fttamrgba6of4cuswc7apa9gue33rb8c X-HE-Tag: 1672773360-409738 X-HE-Meta: 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 WU51ZRmD j7jNTfSLO4nd7Y2jlNk8M/dMdRWQafNJnByBVCLJ9zIBCyssGAtirWLkZYwPCxFUwSGBCONZOeiJ0ZdvtUPH6qnSk25yu/5+rZe5KASTL78BfmFM= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Keith Busch Time spent in dma_pool alloc/free increases linearly with the number of pages backing the pool. We can reduce this to constant time with minor changes to how free pages are tracked. Changes since v2: Added received reviews Applied suggestions from Christoph (removed inlines, use preferred conditional compiling style, minor changes in patch sequence, use kzalloc) Fixed printf formats caught by kernel test robot=20 Added one extra cleanup patch at the end Keith Busch (8): dmapool: add alloc/free performance test dmapool: move debug code to own functions dmapool: rearrange page alloc failure handling dmapool: consolidate page initialization dmapool: simplify freeing dmapool: don't memset on free twice dmapool: link blocks across pages dmapool: create/destroy cleanup Tony Battersby (4): dmapool: remove checks for dev =3D=3D NULL dmapool: use sysfs_emit() instead of scnprintf() dmapool: cleanup integer types dmapool: speedup DMAPOOL_DEBUG with init_on_alloc mm/Kconfig | 9 ++ mm/Makefile | 1 + mm/dmapool.c | 371 ++++++++++++++++++++++------------------------ mm/dmapool_test.c | 147 ++++++++++++++++++ 4 files changed, 331 insertions(+), 197 deletions(-) create mode 100644 mm/dmapool_test.c --=20 2.30.2