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Mon, 24 Jul 2023 19:10:36 +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 Cc: Oscar Salvador , Mike Kravetz , Dan Williams , Joao Martins , Catalin Marinas , Muchun Song , Will Deacon , "Aneesh Kumar K.V" Subject: [PATCH v6 13/13] powerpc/book3s64/radix: Add debug message to give more details of vmemmap allocation Date: Tue, 25 Jul 2023 00:37:59 +0530 Message-ID: <20230724190759.483013-14-aneesh.kumar@linux.ibm.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230724190759.483013-1-aneesh.kumar@linux.ibm.com> References: <20230724190759.483013-1-aneesh.kumar@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 9LVlmaQWoRJPTWWZX7l3NZ4mXIM5w0dC X-Proofpoint-ORIG-GUID: DL7WikEFZZ4S5awmx-Hh0G-n0geze-Ec 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=2023-07-24_14,2023-07-24_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 mlxlogscore=999 mlxscore=0 bulkscore=0 impostorscore=0 phishscore=0 adultscore=0 malwarescore=0 priorityscore=1501 lowpriorityscore=0 clxscore=1015 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2307240168 X-Rspam-User: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 6210240013 X-Stat-Signature: pqexseywbj7k7uhsuktj9bmx74y9uido X-HE-Tag: 1690225856-204197 X-HE-Meta: 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 OIPMA2hX RpDzb/X7E/rKHhl+S0j73aWJnmdUJcROD0B0mAYgExMtF6pnTgu0pyj2Il5PXfqT4ElN6HcDGPf3skhTVUnhTkvDCzum63UUmRhRAKw8GltA2MIHavZWvD9lGmL4Fn+gLwxbe31Lc76igqb6z7mD3TI+UqHEGG2ZuV8K3tjznUHAOMkDbaENvR7FMxaKIKPY1WJvBrPiybRTEy6VRrtXrFKF4ISn/u5RH+8vOhJm6quoBDYg= 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: 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 25b46058f556..59aaa30a7c0d 100644 --- a/arch/powerpc/mm/book3s64/radix_pgtable.c +++ b/arch/powerpc/mm/book3s64/radix_pgtable.c @@ -1033,6 +1033,7 @@ 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 @@ -1045,6 +1046,7 @@ 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)); @@ -1154,6 +1156,7 @@ 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) { /*