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    Subject[PATCH v6 3.2-rc1 14/28] uprobe: register exception notifier

    Use the notifier mechanism to register uprobes exception notifier.

    Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
    Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
    ---
    kernel/uprobes.c | 8 +++++++-
    1 files changed, 7 insertions(+), 1 deletions(-)

    diff --git a/kernel/uprobes.c b/kernel/uprobes.c
    index 2461b20..c4ccb89 100644
    --- a/kernel/uprobes.c
    +++ b/kernel/uprobes.c
    @@ -30,6 +30,7 @@
    #include <linux/mmu_notifier.h> /* set_pte_at_notify */
    #include <linux/swap.h> /* try_to_free_swap */
    #include <linux/ptrace.h> /* user_enable_single_step */
    +#include <linux/kdebug.h> /* notifier mechanism */
    #include <linux/uprobes.h>

    static bulkref_t uprobes_srcu;
    @@ -1235,6 +1236,11 @@ int uprobe_post_notifier(struct pt_regs *regs)
    return 1;
    }

    +struct notifier_block uprobe_exception_nb = {
    + .notifier_call = uprobe_exception_notify,
    + .priority = INT_MAX - 1, /* notified after kprobes, kgdb */
    +};
    +
    static int __init init_uprobes(void)
    {
    int i;
    @@ -1244,7 +1250,7 @@ static int __init init_uprobes(void)
    mutex_init(&uprobes_mmap_mutex[i]);
    }
    init_bulkref(&uprobes_srcu);
    - return 0;
    + return register_die_notifier(&uprobe_exception_nb);
    }

    static void __exit exit_uprobes(void)


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