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    Subject[PATCH 4/8] Uprobe: Export uprobe_map_info along with uprobe_{build/free}_map_info()
    Date
    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>
    ---
    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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