tracing: Have syscall trace events use trace_event_buffer_lock_reserve()

Currently, the syscall trace events call trace_buffer_lock_reserve()
directly, which means that it misses out on some of the filtering
optimizations provided by the helper function
trace_event_buffer_lock_reserve(). Have the syscall trace events call that
instead, as it was missed when adding the update to use the temp buffer
when filtering.

Link: https://lkml.kernel.org/r/[email protected]

Cc: [email protected]
Cc: Ingo Molnar <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Tom Zanussi <[email protected]>
Reviewed-by: Masami Hiramatsu <[email protected]>
Fixes: 0fc1b09 ("tracing: Use temp buffer when filtering events")
Signed-off-by: Steven Rostedt <[email protected]>

Author: rostedt

kernel/trace/trace_syscalls.c

@@ -323,8 +323,7 @@ static void ftrace_syscall_enter(void *data, struct pt_regs *regs, long id)
 
 	trace_ctx = tracing_gen_ctx();
 
-	buffer = tr->array_buffer.buffer;
-	event = trace_buffer_lock_reserve(buffer,
+	event = trace_event_buffer_lock_reserve(&buffer, trace_file,
 			sys_data->enter_event->event.type, size, trace_ctx);
 	if (!event)
 		return;
@@ -367,8 +366,7 @@ static void ftrace_syscall_exit(void *data, struct pt_regs *regs, long ret)
 
 	trace_ctx = tracing_gen_ctx();
 
-	buffer = tr->array_buffer.buffer;
-	event = trace_buffer_lock_reserve(buffer,
+	event = trace_event_buffer_lock_reserve(&buffer, trace_file,
 			sys_data->exit_event->event.type, sizeof(*entry),
 			trace_ctx);
 	if (!event)