Merge branch 'ptrace' of git://git.kernel.org/pub/scm/linux/kernel/git/oleg/misc

[karo-tx-linux.git] / kernel / ptrace.c

diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 512bd017218dd54a555305ceb37fc921c6a85faa..7a81fc0713442590c6643e411c77da127bc2520e 100644 (file)
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -22,6 +22,7 @@
 #include <linux/syscalls.h>
 #include <linux/uaccess.h>
 #include <linux/regset.h>
+#include <linux/hw_breakpoint.h>
 
 
 /*
@@ -923,3 +924,19 @@ asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
        return ret;
 }
 #endif /* CONFIG_COMPAT */
+
+#ifdef CONFIG_HAVE_HW_BREAKPOINT
+int ptrace_get_breakpoints(struct task_struct *tsk)
+{
+       if (atomic_inc_not_zero(&tsk->ptrace_bp_refcnt))
+               return 0;
+
+       return -1;
+}
+
+void ptrace_put_breakpoints(struct task_struct *tsk)
+{
+       if (atomic_dec_and_test(&tsk->ptrace_bp_refcnt))
+               flush_ptrace_hw_breakpoint(tsk);
+}
+#endif /* CONFIG_HAVE_HW_BREAKPOINT */