hw-breakpoints: Drop callback and task parameters from modify helper

Drop the callback and task parameters from modify_user_hw_breakpoint().
For now we have no user that need to modify a breakpoint to the point
of changing its handler or its task context.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: "K. Prasad" <prasad@linux.vnet.ibm.com>
diff --git a/include/linux/hw_breakpoint.h b/include/linux/hw_breakpoint.h
index a03daed..d33096e 100644
--- a/include/linux/hw_breakpoint.h
+++ b/include/linux/hw_breakpoint.h
@@ -57,10 +57,7 @@
 
 /* FIXME: only change from the attr, and don't unregister */
 extern struct perf_event *
-modify_user_hw_breakpoint(struct perf_event *bp,
-			  struct perf_event_attr *attr,
-			  perf_callback_t triggered,
-			  struct task_struct *tsk);
+modify_user_hw_breakpoint(struct perf_event *bp, struct perf_event_attr *attr);
 
 /*
  * Kernel breakpoints are not associated with any particular thread.
@@ -97,9 +94,7 @@
 			    struct task_struct *tsk)	{ return NULL; }
 static inline struct perf_event *
 modify_user_hw_breakpoint(struct perf_event *bp,
-			  struct perf_event_attr *attr,
-			  perf_callback_t triggered,
-			  struct task_struct *tsk)	{ return NULL; }
+			  struct perf_event_attr *attr)	{ return NULL; }
 static inline struct perf_event *
 register_wide_hw_breakpoint_cpu(struct perf_event_attr *attr,
 				perf_callback_t triggered,