x86-64: Add vsyscall:emulate_vsyscall trace event

[pandora-kernel.git] / arch / x86 / kernel / vsyscall_64.c

diff --git a/arch/x86/kernel/vsyscall_64.c b/arch/x86/kernel/vsyscall_64.c
index 1725930..93a0d46 100644 (file)
--- a/arch/x86/kernel/vsyscall_64.c
+++ b/arch/x86/kernel/vsyscall_64.c
@@ -50,6 +50,9 @@
 #include <asm/vgtod.h>
 #include <asm/traps.h>
 
+#define CREATE_TRACE_POINTS
+#include "vsyscall_trace.h"
+
 DEFINE_VVAR(int, vgetcpu_mode);
 DEFINE_VVAR(struct vsyscall_gtod_data, vsyscall_gtod_data) =
 {
@@ -146,6 +149,9 @@ void dotraplinkage do_emulate_vsyscall(struct pt_regs *regs, long error_code)
         * and int 0xcc is two bytes long.
         */
        vsyscall_nr = addr_to_vsyscall_nr(regs->ip - 2);
+
+       trace_emulate_vsyscall(vsyscall_nr);
+
        if (vsyscall_nr < 0) {
                warn_bad_vsyscall(KERN_WARNING, regs,
                                  "illegal int 0xcc (exploit attempt?)");