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Message-Id: <20210719130613.334901-5-gshan@redhat.com>
Date: Mon, 19 Jul 2021 21:06:05 +0800
From: Gavin Shan <gshan@...hat.com>
To: linux-mm@...ck.org
Cc: linux-kernel@...r.kernel.org, anshuman.khandual@....com,
catalin.marinas@....com, will@...nel.org,
akpm@...ux-foundation.org, chuhu@...hat.com, shan.gavin@...il.com
Subject: [PATCH v3 04/12] mm/debug_vm_pgtable: Use struct pgtable_debug_args in protnone and devmap tests
This uses struct pgtable_debug_args in protnone and devmap test
functions. After that, the unused variable @protnone in debug_vm_pgtable()
is dropped.
Signed-off-by: Gavin Shan <gshan@...hat.com>
---
mm/debug_vm_pgtable.c | 58 +++++++++++++++++++------------------------
1 file changed, 26 insertions(+), 32 deletions(-)
diff --git a/mm/debug_vm_pgtable.c b/mm/debug_vm_pgtable.c
index b4b33afae942..1ae204831484 100644
--- a/mm/debug_vm_pgtable.c
+++ b/mm/debug_vm_pgtable.c
@@ -661,9 +661,9 @@ static void __init pmd_populate_tests(struct mm_struct *mm, pmd_t *pmdp,
WARN_ON(pmd_bad(pmd));
}
-static void __init pte_special_tests(unsigned long pfn, pgprot_t prot)
+static void __init pte_special_tests(struct pgtable_debug_args *args)
{
- pte_t pte = pfn_pte(pfn, prot);
+ pte_t pte = pfn_pte(args->fixed_pte_pfn, args->page_prot);
if (!IS_ENABLED(CONFIG_ARCH_HAS_PTE_SPECIAL))
return;
@@ -672,9 +672,9 @@ static void __init pte_special_tests(unsigned long pfn, pgprot_t prot)
WARN_ON(!pte_special(pte_mkspecial(pte)));
}
-static void __init pte_protnone_tests(unsigned long pfn, pgprot_t prot)
+static void __init pte_protnone_tests(struct pgtable_debug_args *args)
{
- pte_t pte = pfn_pte(pfn, prot);
+ pte_t pte = pfn_pte(args->fixed_pte_pfn, args->page_prot_none);
if (!IS_ENABLED(CONFIG_NUMA_BALANCING))
return;
@@ -685,7 +685,7 @@ static void __init pte_protnone_tests(unsigned long pfn, pgprot_t prot)
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
-static void __init pmd_protnone_tests(unsigned long pfn, pgprot_t prot)
+static void __init pmd_protnone_tests(struct pgtable_debug_args *args)
{
pmd_t pmd;
@@ -696,25 +696,25 @@ static void __init pmd_protnone_tests(unsigned long pfn, pgprot_t prot)
return;
pr_debug("Validating PMD protnone\n");
- pmd = pmd_mkhuge(pfn_pmd(pfn, prot));
+ pmd = pmd_mkhuge(pfn_pmd(args->fixed_pmd_pfn, args->page_prot_none));
WARN_ON(!pmd_protnone(pmd));
WARN_ON(!pmd_present(pmd));
}
#else /* !CONFIG_TRANSPARENT_HUGEPAGE */
-static void __init pmd_protnone_tests(unsigned long pfn, pgprot_t prot) { }
+static void __init pmd_protnone_tests(struct pgtable_debug_args *args) { }
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
#ifdef CONFIG_ARCH_HAS_PTE_DEVMAP
-static void __init pte_devmap_tests(unsigned long pfn, pgprot_t prot)
+static void __init pte_devmap_tests(struct pgtable_debug_args *args)
{
- pte_t pte = pfn_pte(pfn, prot);
+ pte_t pte = pfn_pte(args->fixed_pte_pfn, args->page_prot);
pr_debug("Validating PTE devmap\n");
WARN_ON(!pte_devmap(pte_mkdevmap(pte)));
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
-static void __init pmd_devmap_tests(unsigned long pfn, pgprot_t prot)
+static void __init pmd_devmap_tests(struct pgtable_debug_args *args)
{
pmd_t pmd;
@@ -722,12 +722,12 @@ static void __init pmd_devmap_tests(unsigned long pfn, pgprot_t prot)
return;
pr_debug("Validating PMD devmap\n");
- pmd = pfn_pmd(pfn, prot);
+ pmd = pfn_pmd(args->fixed_pmd_pfn, args->page_prot);
WARN_ON(!pmd_devmap(pmd_mkdevmap(pmd)));
}
#ifdef CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
-static void __init pud_devmap_tests(unsigned long pfn, pgprot_t prot)
+static void __init pud_devmap_tests(struct pgtable_debug_args *args)
{
pud_t pud;
@@ -735,20 +735,20 @@ static void __init pud_devmap_tests(unsigned long pfn, pgprot_t prot)
return;
pr_debug("Validating PUD devmap\n");
- pud = pfn_pud(pfn, prot);
+ pud = pfn_pud(args->fixed_pud_pfn, args->page_prot);
WARN_ON(!pud_devmap(pud_mkdevmap(pud)));
}
#else /* !CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD */
-static void __init pud_devmap_tests(unsigned long pfn, pgprot_t prot) { }
+static void __init pud_devmap_tests(struct pgtable_debug_args *args) { }
#endif /* CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD */
#else /* CONFIG_TRANSPARENT_HUGEPAGE */
-static void __init pmd_devmap_tests(unsigned long pfn, pgprot_t prot) { }
-static void __init pud_devmap_tests(unsigned long pfn, pgprot_t prot) { }
+static void __init pmd_devmap_tests(struct pgtable_debug_args *args) { }
+static void __init pud_devmap_tests(struct pgtable_debug_args *args) { }
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
#else
-static void __init pte_devmap_tests(unsigned long pfn, pgprot_t prot) { }
-static void __init pmd_devmap_tests(unsigned long pfn, pgprot_t prot) { }
-static void __init pud_devmap_tests(unsigned long pfn, pgprot_t prot) { }
+static void __init pte_devmap_tests(struct pgtable_debug_args *args) { }
+static void __init pmd_devmap_tests(struct pgtable_debug_args *args) { }
+static void __init pud_devmap_tests(struct pgtable_debug_args *args) { }
#endif /* CONFIG_ARCH_HAS_PTE_DEVMAP */
static void __init pte_soft_dirty_tests(unsigned long pfn, pgprot_t prot)
@@ -1154,7 +1154,7 @@ static int __init debug_vm_pgtable(void)
pmd_t *pmdp, *saved_pmdp, pmd;
pte_t *ptep;
pgtable_t saved_ptep;
- pgprot_t prot, protnone;
+ pgprot_t prot;
phys_addr_t paddr;
unsigned long vaddr, pte_aligned, pmd_aligned;
unsigned long pud_aligned;
@@ -1174,12 +1174,6 @@ static int __init debug_vm_pgtable(void)
return 1;
}
- /*
- * __P000 (or even __S000) will help create page table entries with
- * PROT_NONE permission as required for pxx_protnone_tests().
- */
- protnone = __P000;
-
vma = vm_area_alloc(mm);
if (!vma) {
pr_err("vma allocation failed\n");
@@ -1255,13 +1249,13 @@ static int __init debug_vm_pgtable(void)
pte_savedwrite_tests(&args);
pmd_savedwrite_tests(&args);
- pte_special_tests(pte_aligned, prot);
- pte_protnone_tests(pte_aligned, protnone);
- pmd_protnone_tests(pmd_aligned, protnone);
+ pte_special_tests(&args);
+ pte_protnone_tests(&args);
+ pmd_protnone_tests(&args);
- pte_devmap_tests(pte_aligned, prot);
- pmd_devmap_tests(pmd_aligned, prot);
- pud_devmap_tests(pud_aligned, prot);
+ pte_devmap_tests(&args);
+ pmd_devmap_tests(&args);
+ pud_devmap_tests(&args);
pte_soft_dirty_tests(pte_aligned, prot);
pmd_soft_dirty_tests(pmd_aligned, prot);
--
2.23.0
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