From 5b808275f3bbe8cc95bb9301f4d5a41331d0e0e6 Mon Sep 17 00:00:00 2001 From: Lluís Vilanova Date: Tue, 27 May 2014 15:02:14 +0200 Subject: trace: Multi-backend tracing MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Adds support to compile QEMU with multiple tracing backends at the same time. For example, you can compile QEMU with: $ ./configure --enable-trace-backends=ftrace,dtrace Where 'ftrace' can be handy for having an in-flight record of events, and 'dtrace' can be later used to extract more information from the system. This patch allows having both available without recompiling QEMU. Signed-off-by: Lluís Vilanova Signed-off-by: Stefan Hajnoczi --- trace/default.c | 40 ---------------------------------------- 1 file changed, 40 deletions(-) delete mode 100644 trace/default.c (limited to 'trace/default.c') diff --git a/trace/default.c b/trace/default.c deleted file mode 100644 index 6e07a479d6..0000000000 --- a/trace/default.c +++ /dev/null @@ -1,40 +0,0 @@ -/* - * Default implementation for backend initialization from commandline. - * - * Copyright (C) 2011-2012 Lluís Vilanova - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - */ - -#include "trace/control.h" - - -void trace_print_events(FILE *stream, fprintf_function stream_printf) -{ - fprintf(stderr, "warning: " - "cannot print the trace events with the current backend\n"); - stream_printf(stream, "error: " - "operation not supported with the current backend\n"); -} - -void trace_event_set_state_dynamic_backend(TraceEvent *ev, bool state) -{ - fprintf(stderr, "warning: " - "cannot set the state of a trace event with the current backend\n"); -} - -bool trace_backend_init(const char *events, const char *file) -{ - if (events) { - fprintf(stderr, "error: -trace events=...: " - "option not supported by the selected tracing backend\n"); - return false; - } - if (file) { - fprintf(stderr, "error: -trace file=...: " - "option not supported by the selected tracing backend\n"); - return false; - } - return true; -} -- cgit 1.4.1