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>
diff --git a/block/blktrace.c b/block/blktrace.c
index d9d7146..8e52f24 100644
--- a/block/blktrace.c
+++ b/block/blktrace.c
@@ -165,7 +165,7 @@
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 @@
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 @@
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;
}