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| author | Liam Howlett <liam.howlett@oracle.com> | 2022-02-18 02:37:04 +0000 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2022-02-25 12:40:52 +0000 |
| commit | 3a4f7ef4bed5bdc77a1ac8132f9f0650bbcb3eae (patch) | |
| tree | 646f566e88c221d9779b594ae17d699d85605f00 /arch/arm64/kernel/elfcore.c | |
| parent | 731451ab3c0c6fe88142dbc73a74c71bd92a5cff (diff) | |
| download | linux-3a4f7ef4bed5bdc77a1ac8132f9f0650bbcb3eae.tar.bz2 | |
arm64: Change elfcore for_each_mte_vma() to use VMA iterator
Rework for_each_mte_vma() to use a VMA iterator instead of an explicit
linked-list. This will allow easy integration with the maple tree work
which removes the VMA list altogether.
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20220218023650.672072-1-Liam.Howlett@oracle.com
[will: Folded in fix from Catalin]
Link: https://lore.kernel.org/r/YhUcywqIhmHvX6dG@arm.com
Signed-off--by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/kernel/elfcore.c')
| -rw-r--r-- | arch/arm64/kernel/elfcore.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/arch/arm64/kernel/elfcore.c b/arch/arm64/kernel/elfcore.c index 3455ee4acc04..3ed39c61a510 100644 --- a/arch/arm64/kernel/elfcore.c +++ b/arch/arm64/kernel/elfcore.c @@ -8,9 +8,16 @@ #include <asm/cpufeature.h> #include <asm/mte.h> -#define for_each_mte_vma(tsk, vma) \ +#ifndef VMA_ITERATOR +#define VMA_ITERATOR(name, mm, addr) \ + struct mm_struct *name = mm +#define for_each_vma(vmi, vma) \ + for (vma = vmi->mmap; vma; vma = vma->vm_next) +#endif + +#define for_each_mte_vma(vmi, vma) \ if (system_supports_mte()) \ - for (vma = tsk->mm->mmap; vma; vma = vma->vm_next) \ + for_each_vma(vmi, vma) \ if (vma->vm_flags & VM_MTE) static unsigned long mte_vma_tag_dump_size(struct vm_area_struct *vma) @@ -65,8 +72,9 @@ Elf_Half elf_core_extra_phdrs(void) { struct vm_area_struct *vma; int vma_count = 0; + VMA_ITERATOR(vmi, current->mm, 0); - for_each_mte_vma(current, vma) + for_each_mte_vma(vmi, vma) vma_count++; return vma_count; @@ -75,8 +83,9 @@ Elf_Half elf_core_extra_phdrs(void) int elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset) { struct vm_area_struct *vma; + VMA_ITERATOR(vmi, current->mm, 0); - for_each_mte_vma(current, vma) { + for_each_mte_vma(vmi, vma) { struct elf_phdr phdr; phdr.p_type = PT_ARM_MEMTAG_MTE; @@ -100,8 +109,9 @@ size_t elf_core_extra_data_size(void) { struct vm_area_struct *vma; size_t data_size = 0; + VMA_ITERATOR(vmi, current->mm, 0); - for_each_mte_vma(current, vma) + for_each_mte_vma(vmi, vma) data_size += mte_vma_tag_dump_size(vma); return data_size; @@ -110,8 +120,9 @@ size_t elf_core_extra_data_size(void) int elf_core_write_extra_data(struct coredump_params *cprm) { struct vm_area_struct *vma; + VMA_ITERATOR(vmi, current->mm, 0); - for_each_mte_vma(current, vma) { + for_each_mte_vma(vmi, vma) { if (vma->vm_flags & VM_DONTDUMP) continue; |