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Tue, 2 Feb 2021 09:11:42 GMT Received: from b01ledav001.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8FE4D28058; Tue, 2 Feb 2021 09:11:42 +0000 (GMT) Received: from b01ledav001.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6AF8A28059; Tue, 2 Feb 2021 09:11:39 +0000 (GMT) Received: from skywalker.ibmuc.com (unknown [9.199.35.92]) by b01ledav001.gho.pok.ibm.com (Postfix) with ESMTP; Tue, 2 Feb 2021 09:11:39 +0000 (GMT) From: "Aneesh Kumar K.V" To: linux-mm@kvack.org, akpm@linux-foundation.org Cc: mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org, kaleshsingh@google.com, peterz@infradead.org, joel@joelfernandes.org, "Aneesh Kumar K.V" Subject: [RFC PATCH 6/6] powerpc/mm: Enable move pmd/pud Date: Tue, 2 Feb 2021 14:41:16 +0530 Message-Id: <20210202091116.196134-6-aneesh.kumar@linux.ibm.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210202091116.196134-1-aneesh.kumar@linux.ibm.com> References: <20210202091116.196134-1-aneesh.kumar@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369,18.0.737 definitions=2021-02-02_04:2021-01-29,2021-02-02 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 mlxlogscore=999 priorityscore=1501 suspectscore=0 lowpriorityscore=0 mlxscore=0 phishscore=0 clxscore=1015 spamscore=0 bulkscore=0 impostorscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2102020059 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: mremap HAVE_MOVE_PMD/PUD optimization time comparison for 1GB region: 1GB mremap - Source PTE-aligned, Destination PTE-aligned mremap time: 1114318ns 1GB mremap - Source PMD-aligned, Destination PMD-aligned mremap time: 1097715ns 1GB mremap - Source PUD-aligned, Destination PUD-aligned mremap time: 26851ns Signed-off-by: Aneesh Kumar K.V --- arch/powerpc/platforms/Kconfig.cputype | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index 3ce907523b1e..2e666e569fdf 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -97,6 +97,8 @@ config PPC_BOOK3S_64 select PPC_HAVE_PMU_SUPPORT select SYS_SUPPORTS_HUGETLBFS select HAVE_ARCH_TRANSPARENT_HUGEPAGE + select HAVE_MOVE_PMD + select HAVE_MOVE_PUD select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE select ARCH_SUPPORTS_NUMA_BALANCING select IRQ_WORK