hw-breakpoints: Use overflow handler instead of the event callback

[safe/jmp/linux-2.6] / samples / hw_breakpoint / data_breakpoint.c

diff --git a/samples/hw_breakpoint/data_breakpoint.c b/samples/hw_breakpoint/data_breakpoint.c
index 2952550..c69cbe9 100644 (file)
--- a/samples/hw_breakpoint/data_breakpoint.c
+++ b/samples/hw_breakpoint/data_breakpoint.c
@@ -41,7 +41,9 @@ module_param_string(ksym, ksym_name, KSYM_NAME_LEN, S_IRUGO);
 MODULE_PARM_DESC(ksym, "Kernel symbol to monitor; this module will report any"
                        " write operations on the kernel symbol");
 
 MODULE_PARM_DESC(ksym, "Kernel symbol to monitor; this module will report any"
                        " write operations on the kernel symbol");
 

-static void sample_hbp_handler(struct perf_event *temp, void *data)
+static void sample_hbp_handler(struct perf_event *bp, int nmi,
+                              struct perf_sample_data *data,
+                              struct pt_regs *regs)

 {
        printk(KERN_INFO "%s value is changed\n", ksym_name);
        dump_stack();
 {
        printk(KERN_INFO "%s value is changed\n", ksym_name);
        dump_stack();


@@ -51,8 +53,9 @@ static void sample_hbp_handler(struct perf_event *temp, void *data)
 static int __init hw_break_module_init(void)
 {
        int ret;
 static int __init hw_break_module_init(void)
 {
        int ret;

-       DEFINE_BREAKPOINT_ATTR(attr);
+       struct perf_event_attr attr;

 
 

+       hw_breakpoint_init(&attr);

        attr.bp_addr = kallsyms_lookup_name(ksym_name);
        attr.bp_len = HW_BREAKPOINT_LEN_4;
        attr.bp_type = HW_BREAKPOINT_W | HW_BREAKPOINT_R;
        attr.bp_addr = kallsyms_lookup_name(ksym_name);
        attr.bp_len = HW_BREAKPOINT_LEN_4;
        attr.bp_type = HW_BREAKPOINT_W | HW_BREAKPOINT_R;