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Tue, 6 Jun 2023 04:57:00 +0000 (GMT) Received: from smtpav01.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B5A6758063; Tue, 6 Jun 2023 04:56:55 +0000 (GMT) Received: from skywalker.in.ibm.com (unknown [9.109.204.255]) by smtpav01.wdc07v.mail.ibm.com (Postfix) with ESMTP; Tue, 6 Jun 2023 04:56:55 +0000 (GMT) From: "Aneesh Kumar K.V" To: linux-mm@kvack.org, akpm@linux-foundation.org, npiggin@gmail.com, christophe.leroy@csgroup.eu Subject: [PATCH 06/16] mm/hugepage pud: Allow arch-specific helper function to check huge page pud support Date: Tue, 6 Jun 2023 10:25:58 +0530 Message-Id: <20230606045608.55127-7-aneesh.kumar@linux.ibm.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230606045608.55127-1-aneesh.kumar@linux.ibm.com> References: <20230606045608.55127-1-aneesh.kumar@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: TL95xZp7Hzhy9aWQbulNnVsEqTtBFSvp X-Proofpoint-ORIG-GUID: JnnwiZ6ksnoU8VqAsB57cXMOxpAqSvry X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.573,FMLib:17.11.176.26 definitions=2023-06-06_02,2023-06-05_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 bulkscore=0 clxscore=1015 priorityscore=1501 spamscore=0 lowpriorityscore=0 suspectscore=0 phishscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2304280000 definitions=main-2306060040 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Will Deacon , Muchun Song , "Aneesh Kumar K.V" , Catalin Marinas , Dan Williams , Oscar Salvador , linuxppc-dev@lists.ozlabs.org, Joao Martins , Mike Kravetz Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" Architectures like powerpc would like to enable transparent huge page pud support only with radix translation. To support that add has_transparent_pud_hugepage() helper that architectures can override. Signed-off-by: Aneesh Kumar K.V --- drivers/nvdimm/pfn_devs.c | 2 +- include/linux/pgtable.h | 3 +++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/nvdimm/pfn_devs.c b/drivers/nvdimm/pfn_devs.c index af7d9301520c..18ad315581ca 100644 --- a/drivers/nvdimm/pfn_devs.c +++ b/drivers/nvdimm/pfn_devs.c @@ -100,7 +100,7 @@ static unsigned long *nd_pfn_supported_alignments(unsigned long *alignments) if (has_transparent_hugepage()) { alignments[1] = HPAGE_PMD_SIZE; - if (IS_ENABLED(CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD)) + if (has_transparent_pud_hugepage()) alignments[2] = HPAGE_PUD_SIZE; } diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h index c5a51481bbb9..b3f4dd0240f5 100644 --- a/include/linux/pgtable.h +++ b/include/linux/pgtable.h @@ -1597,6 +1597,9 @@ typedef unsigned int pgtbl_mod_mask; #define has_transparent_hugepage() IS_BUILTIN(CONFIG_TRANSPARENT_HUGEPAGE) #endif +#ifndef has_transparent_pud_hugepage +#define has_transparent_pud_hugepage() IS_BUILTIN(CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD) +#endif /* * On some architectures it depends on the mm if the p4d/pud or pmd * layer of the page table hierarchy is folded or not.