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Thu, 6 Jul 2023 08:59:39 +0000 (GMT) Received: from smtpav01.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E419458059; Thu, 6 Jul 2023 08:59:34 +0000 (GMT) Received: from skywalker.in.ibm.com (unknown [9.109.212.144]) by smtpav01.dal12v.mail.ibm.com (Postfix) with ESMTP; Thu, 6 Jul 2023 08:59:34 +0000 (GMT) From: "Aneesh Kumar K.V" To: linux-mm@kvack.org, akpm@linux-foundation.org, mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org, npiggin@gmail.com, christophe.leroy@csgroup.eu Subject: [PATCH v3 13/13] powerpc/book3s64/radix: Add debug message to give more details of vmemmap allocation Date: Thu, 6 Jul 2023 14:28:19 +0530 Message-ID: <20230706085819.827761-14-aneesh.kumar@linux.ibm.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230706085819.827761-1-aneesh.kumar@linux.ibm.com> References: <20230706085819.827761-1-aneesh.kumar@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: ZEf-ItYJYP9ALjhsQNJsxs1vuqIAM4_N X-Proofpoint-ORIG-GUID: Z7SWV4WQcHepAh7_Kbdsv69gkpfSrNsp X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-06_05,2023-07-06_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 clxscore=1015 malwarescore=0 suspectscore=0 adultscore=0 spamscore=0 bulkscore=0 impostorscore=0 mlxscore=0 priorityscore=1501 mlxlogscore=999 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2307060075 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: Catalin Marinas , Muchun Song , "Aneesh Kumar K.V" , Dan Williams , Oscar Salvador , Will Deacon , Joao Martins , Mike Kravetz Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" Add some extra vmemmap pr_debug message that will indicate the type of vmemmap allocations. For ex: with DAX vmemmap optimization we can find the below details: [ 187.166580] radix-mmu: PAGE_SIZE vmemmap mapping [ 187.166587] radix-mmu: PAGE_SIZE vmemmap mapping [ 187.166591] radix-mmu: Tail page reuse vmemmap mapping [ 187.166594] radix-mmu: Tail page reuse vmemmap mapping [ 187.166598] radix-mmu: Tail page reuse vmemmap mapping [ 187.166601] radix-mmu: Tail page reuse vmemmap mapping [ 187.166604] radix-mmu: Tail page reuse vmemmap mapping [ 187.166608] radix-mmu: Tail page reuse vmemmap mapping [ 187.166611] radix-mmu: Tail page reuse vmemmap mapping [ 187.166614] radix-mmu: Tail page reuse vmemmap mapping [ 187.166617] radix-mmu: Tail page reuse vmemmap mapping [ 187.166620] radix-mmu: Tail page reuse vmemmap mapping [ 187.166623] radix-mmu: Tail page reuse vmemmap mapping [ 187.166626] radix-mmu: Tail page reuse vmemmap mapping [ 187.166629] radix-mmu: Tail page reuse vmemmap mapping [ 187.166632] radix-mmu: Tail page reuse vmemmap mapping And without vmemmap optimization [ 293.549931] radix-mmu: PMD_SIZE vmemmap mapping [ 293.549984] radix-mmu: PMD_SIZE vmemmap mapping [ 293.550032] radix-mmu: PMD_SIZE vmemmap mapping [ 293.550076] radix-mmu: PMD_SIZE vmemmap mapping [ 293.550117] radix-mmu: PMD_SIZE vmemmap mapping Signed-off-by: Aneesh Kumar K.V --- arch/powerpc/mm/book3s64/radix_pgtable.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c index dac56c883099..a62729f70f2a 100644 --- a/arch/powerpc/mm/book3s64/radix_pgtable.c +++ b/arch/powerpc/mm/book3s64/radix_pgtable.c @@ -1026,6 +1026,7 @@ static pte_t * __meminit radix__vmemmap_pte_populate(pmd_t *pmdp, unsigned long p = vmemmap_alloc_block_buf(PAGE_SIZE, node, NULL); if (!p) return NULL; + pr_debug("PAGE_SIZE vmemmap mapping\n"); } else { /* * When a PTE/PMD entry is freed from the init_mm @@ -1038,6 +1039,7 @@ static pte_t * __meminit radix__vmemmap_pte_populate(pmd_t *pmdp, unsigned long */ get_page(reuse); p = page_to_virt(reuse); + pr_debug("Tail page reuse vmemmap mapping\n"); } VM_BUG_ON(!PAGE_ALIGNED(addr)); @@ -1147,6 +1149,7 @@ int __meminit radix__vmemmap_populate(unsigned long start, unsigned long end, in p = vmemmap_alloc_block_buf(PMD_SIZE, node, altmap); if (p) { vmemmap_set_pmd(pmd, p, node, addr, next); + pr_debug("PMD_SIZE vmemmap mapping\n"); continue; } else if (altmap) { /*