From: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
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 <osalvador@suse.de>,
Mike Kravetz <mike.kravetz@oracle.com>,
Dan Williams <dan.j.williams@intel.com>,
Joao Martins <joao.m.martins@oracle.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Muchun Song <muchun.song@linux.dev>,
Will Deacon <will@kernel.org>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Subject: [PATCH v4 13/13] powerpc/book3s64/radix: Add debug message to give more details of vmemmap allocation
Date: Mon, 10 Jul 2023 21:38:42 +0530 [thread overview]
Message-ID: <20230710160842.56300-14-aneesh.kumar@linux.ibm.com> (raw)
In-Reply-To: <20230710160842.56300-1-aneesh.kumar@linux.ibm.com>
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 <aneesh.kumar@linux.ibm.com>
---
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 73d0987369ff..2828e7e0802c 100644
--- a/arch/powerpc/mm/book3s64/radix_pgtable.c
+++ b/arch/powerpc/mm/book3s64/radix_pgtable.c
@@ -1034,6 +1034,7 @@ 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
@@ -1046,6 +1047,7 @@ 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));
@@ -1155,6 +1157,7 @@ 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) {
/*
--
2.41.0
prev parent reply other threads:[~2023-07-10 16:45 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-10 16:08 [PATCH v4 00/13] Add support for DAX vmemmap optimization for ppc64 Aneesh Kumar K.V
2023-07-10 16:08 ` [PATCH v4 01/13] mm/hugepage pud: Allow arch-specific helper function to check huge page pud support Aneesh Kumar K.V
2023-07-10 17:16 ` Christophe Leroy
2023-07-10 16:08 ` [PATCH v4 02/13] mm: Change pudp_huge_get_and_clear_full take vm_area_struct as arg Aneesh Kumar K.V
2023-07-10 17:17 ` Christophe Leroy
2023-07-10 16:08 ` [PATCH v4 03/13] mm/vmemmap: Improve vmemmap_can_optimize and allow architectures to override Aneesh Kumar K.V
2023-07-10 17:20 ` Christophe Leroy
2023-07-11 4:25 ` Aneesh Kumar K.V
2023-07-10 16:08 ` [PATCH v4 04/13] mm/vmemmap: Allow architectures to override how vmemmap optimization works Aneesh Kumar K.V
2023-07-10 17:26 ` Christophe Leroy
2023-07-11 4:27 ` Aneesh Kumar K.V
2023-07-10 16:08 ` [PATCH v4 05/13] mm: Add __HAVE_ARCH_PUD_SAME similar to __HAVE_ARCH_P4D_SAME Aneesh Kumar K.V
2023-07-10 17:29 ` Christophe Leroy
2023-07-11 4:24 ` Aneesh Kumar K.V
2023-07-10 16:08 ` [PATCH v4 06/13] mm/huge pud: Use transparent huge pud helpers only with CONFIG_TRANSPARENT_HUGEPAGE Aneesh Kumar K.V
2023-07-10 17:30 ` Christophe Leroy
2023-07-10 16:08 ` [PATCH v4 07/13] mm/vmemmap optimization: Split hugetlb and devdax vmemmap optimization Aneesh Kumar K.V
2023-07-10 16:08 ` [PATCH v4 08/13] powerpc/mm/trace: Convert trace event to trace event class Aneesh Kumar K.V
2023-07-10 17:32 ` Christophe Leroy
2023-07-10 16:08 ` [PATCH v4 09/13] powerpc/book3s64/mm: Enable transparent pud hugepage Aneesh Kumar K.V
2023-07-10 16:08 ` [PATCH v4 10/13] powerpc/book3s64/vmemmap: Switch radix to use a different vmemmap handling function Aneesh Kumar K.V
2023-07-10 16:08 ` [PATCH v4 11/13] powerpc/book3s64/radix: Add support for vmemmap optimization for radix Aneesh Kumar K.V
2023-07-10 16:08 ` [PATCH v4 12/13] powerpc/book3s64/radix: Remove mmu_vmemmap_psize Aneesh Kumar K.V
2023-07-10 16:08 ` Aneesh Kumar K.V [this message]
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