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SubjectRe: [PATCH 4/8] Uprobe: Export uprobe_map_info along with uprobe_{build/free}_map_info()
On Tue, Mar 13, 2018 at 06:25:59PM +0530, Ravi Bangoria wrote:
> These exported data structure and functions will be used by other
> files in later patches.
>
> No functionality changes.
>
> Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>

Reviewed-by: Jérôme Glisse <jglisse@redhat.com>

> ---
> include/linux/uprobes.h | 9 +++++++++
> kernel/events/uprobes.c | 14 +++-----------
> 2 files changed, 12 insertions(+), 11 deletions(-)
>
> diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h
> index 0a294e9..7bd2760 100644
> --- a/include/linux/uprobes.h
> +++ b/include/linux/uprobes.h
> @@ -109,12 +109,19 @@ enum rp_check {
> RP_CHECK_RET,
> };
>
> +struct address_space;
> struct xol_area;
>
> struct uprobes_state {
> struct xol_area *xol_area;
> };
>
> +struct uprobe_map_info {
> + struct uprobe_map_info *next;
> + struct mm_struct *mm;
> + unsigned long vaddr;
> +};
> +
> extern int set_swbp(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long vaddr);
> extern int set_orig_insn(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long vaddr);
> extern bool is_swbp_insn(uprobe_opcode_t *insn);
> @@ -149,6 +156,8 @@ struct uprobes_state {
> extern bool arch_uprobe_ignore(struct arch_uprobe *aup, struct pt_regs *regs);
> extern void arch_uprobe_copy_ixol(struct page *page, unsigned long vaddr,
> void *src, unsigned long len);
> +extern struct uprobe_map_info *uprobe_free_map_info(struct uprobe_map_info *info);
> +extern struct uprobe_map_info *uprobe_build_map_info(struct address_space *mapping, loff_t offset, bool is_register);
> #else /* !CONFIG_UPROBES */
> struct uprobes_state {
> };
> diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
> index 081b88c1..e7830b8 100644
> --- a/kernel/events/uprobes.c
> +++ b/kernel/events/uprobes.c
> @@ -695,23 +695,15 @@ static void delete_uprobe(struct uprobe *uprobe)
> put_uprobe(uprobe);
> }
>
> -struct uprobe_map_info {
> - struct uprobe_map_info *next;
> - struct mm_struct *mm;
> - unsigned long vaddr;
> -};
> -
> -static inline struct uprobe_map_info *
> -uprobe_free_map_info(struct uprobe_map_info *info)
> +struct uprobe_map_info *uprobe_free_map_info(struct uprobe_map_info *info)
> {
> struct uprobe_map_info *next = info->next;
> kfree(info);
> return next;
> }
>
> -static struct uprobe_map_info *
> -uprobe_build_map_info(struct address_space *mapping, loff_t offset,
> - bool is_register)
> +struct uprobe_map_info *uprobe_build_map_info(struct address_space *mapping,
> + loff_t offset, bool is_register)
> {
> unsigned long pgoff = offset >> PAGE_SHIFT;
> struct vm_area_struct *vma;
> --
> 1.8.3.1
>

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