lkml.org 
[lkml]   [2011]   [Apr]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Date
    Subject[PATCH v3 2.6.39-rc1-tip 17/26] 17: uprobes: register a notifier for uprobes.

    Uprobe needs to be intimated on int3 and singlestep exceptions.
    Hence uprobes registers a die notifier so that its notified of the events.

    Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
    Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
    ---
    kernel/uprobes.c | 18 ++++++++++++++++++
    1 files changed, 18 insertions(+), 0 deletions(-)

    diff --git a/kernel/uprobes.c b/kernel/uprobes.c
    index e0ff6ba..cdd52d0 100644
    --- a/kernel/uprobes.c
    +++ b/kernel/uprobes.c
    @@ -33,6 +33,7 @@
    #include <linux/rmap.h> /* needed for anon_vma_prepare */
    #include <linux/mman.h> /* needed for PROT_EXEC, MAP_PRIVATE */
    #include <linux/file.h> /* needed for fput() */
    +#include <linux/kdebug.h> /* needed for notifier mechanism */

    #define UINSNS_PER_PAGE (PAGE_SIZE/UPROBES_XOL_SLOT_BYTES)
    #define MAX_UPROBES_XOL_SLOTS UINSNS_PER_PAGE
    @@ -1387,3 +1388,20 @@ int uprobe_post_notifier(struct pt_regs *regs)
    }
    return 0;
    }
    +
    +struct notifier_block uprobes_exception_nb = {
    + .notifier_call = uprobes_exception_notify,
    + .priority = 0x7ffffff0,
    +};
    +
    +static int __init init_uprobes(void)
    +{
    + return register_die_notifier(&uprobes_exception_nb);
    +}
    +
    +static void __exit exit_uprobes(void)
    +{
    +}
    +
    +module_init(init_uprobes);
    +module_exit(exit_uprobes);

    \
     
     \ /
      Last update: 2011-04-01 16:47    [W:0.022 / U:0.344 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site