ring_buffer: remove unused flags parameter

Impact: API change, cleanup

>From ring_buffer_{lock_reserve,unlock_commit}.

$ codiff /tmp/vmlinux.before /tmp/vmlinux.after
linux-2.6-tip/kernel/trace/trace.c:
  trace_vprintk              |  -14
  trace_graph_return         |  -14
  trace_graph_entry          |  -10
  trace_function             |   -8
  __ftrace_trace_stack       |   -8
  ftrace_trace_userstack     |   -8
  tracing_sched_switch_trace |   -8
  ftrace_trace_special       |  -12
  tracing_sched_wakeup_trace |   -8
 9 functions changed, 90 bytes removed, diff: -90

linux-2.6-tip/block/blktrace.c:
  __blk_add_trace |   -1
 1 function changed, 1 bytes removed, diff: -1

/tmp/vmlinux.after:
 10 functions changed, 91 bytes removed, diff: -91

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Frédéric Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 4 insertions, 4 deletions

diff --git a/block/blktrace.c b/block/blktrace.c
index d9d7146ee023..8e52f24cc8f9 100644
--- a/block/blktrace.c
+++ b/block/blktrace.c
@@ -165,7 +165,7 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
         struct task_struct *tsk = current;
         struct ring_buffer_event *event = NULL;
         struct blk_io_trace *t;
-        unsigned long flags;
+        unsigned long flags = 0;
         unsigned long *sequence;
         pid_t pid;
         int cpu, pc = 0;
@@ -191,7 +191,7 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
                 tracing_record_cmdline(current);
 
                 event = ring_buffer_lock_reserve(blk_tr->buffer,
-                                                 sizeof(*t) + pdu_len, &flags);
+                                                 sizeof(*t) + pdu_len);
                 if (!event)
                         return;
 
@@ -241,11 +241,11 @@ record_it:
                         memcpy((void *) t + sizeof(*t), pdu_data, pdu_len);
 
                 if (blk_tr) {
-                        ring_buffer_unlock_commit(blk_tr->buffer, event, flags);
+                        ring_buffer_unlock_commit(blk_tr->buffer, event);
                         if (pid != 0 &&
                             !(blk_tracer_flags.val & TRACE_BLK_OPT_CLASSIC) &&
                             (trace_flags & TRACE_ITER_STACKTRACE) != 0)
-                                __trace_stack(blk_tr, flags, 5, pc);
+                                __trace_stack(blk_tr, 0, 5, pc);
                         trace_wake_up();
                         return;
                 }