diff options
Diffstat (limited to 'tools/testing/selftests/vm/khugepaged.c')
| -rw-r--r-- | tools/testing/selftests/vm/khugepaged.c | 62 |
1 files changed, 23 insertions, 39 deletions
diff --git a/tools/testing/selftests/vm/khugepaged.c b/tools/testing/selftests/vm/khugepaged.c index 0f1bee0eff24..eb6f5bbacff1 100644 --- a/tools/testing/selftests/vm/khugepaged.c +++ b/tools/testing/selftests/vm/khugepaged.c @@ -461,6 +461,25 @@ static void fill_memory(int *p, unsigned long start, unsigned long end) p[i * page_size / sizeof(*p)] = i + 0xdead0000; } +/* + * Returns pmd-mapped hugepage in VMA marked VM_HUGEPAGE, filled with + * validate_memory()'able contents. + */ +static void *alloc_hpage(void) +{ + void *p; + + p = alloc_mapping(); + printf("Allocate huge page..."); + madvise(p, hpage_pmd_size, MADV_HUGEPAGE); + fill_memory(p, 0, hpage_pmd_size); + if (check_huge(p)) + success("OK"); + else + fail("Fail"); + return p; +} + static void validate_memory(int *p, unsigned long start, unsigned long end) { int i; @@ -682,15 +701,7 @@ static void collapse_single_pte_entry_compound(struct collapse_context *c) { void *p; - p = alloc_mapping(); - - printf("Allocate huge page..."); - madvise(p, hpage_pmd_size, MADV_HUGEPAGE); - fill_memory(p, 0, hpage_pmd_size); - if (check_huge(p)) - success("OK"); - else - fail("Fail"); + p = alloc_hpage(); madvise(p, hpage_pmd_size, MADV_NOHUGEPAGE); printf("Split huge page leaving single PTE mapping compound page..."); @@ -710,16 +721,7 @@ static void collapse_full_of_compound(struct collapse_context *c) { void *p; - p = alloc_mapping(); - - printf("Allocate huge page..."); - madvise(p, hpage_pmd_size, MADV_HUGEPAGE); - fill_memory(p, 0, hpage_pmd_size); - if (check_huge(p)) - success("OK"); - else - fail("Fail"); - + p = alloc_hpage(); printf("Split huge page leaving single PTE page table full of compound pages..."); madvise(p, page_size, MADV_NOHUGEPAGE); madvise(p, hpage_pmd_size, MADV_NOHUGEPAGE); @@ -837,16 +839,7 @@ static void collapse_fork_compound(struct collapse_context *c) int wstatus; void *p; - p = alloc_mapping(); - - printf("Allocate huge page..."); - madvise(p, hpage_pmd_size, MADV_HUGEPAGE); - fill_memory(p, 0, hpage_pmd_size); - if (check_huge(p)) - success("OK"); - else - fail("Fail"); - + p = alloc_hpage(); printf("Share huge page over fork()..."); if (!fork()) { /* Do not touch settings on child exit */ @@ -896,16 +889,7 @@ static void collapse_max_ptes_shared(struct collapse_context *c) int wstatus; void *p; - p = alloc_mapping(); - - printf("Allocate huge page..."); - madvise(p, hpage_pmd_size, MADV_HUGEPAGE); - fill_memory(p, 0, hpage_pmd_size); - if (check_huge(p)) - success("OK"); - else - fail("Fail"); - + p = alloc_hpage(); printf("Share huge page over fork()..."); if (!fork()) { /* Do not touch settings on child exit */ |