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authorDon Dugger <n0ano@n0ano.com>2016-06-03 03:33:22 +0000
committerGerrit Code Review <gerrit@172.30.200.206>2016-06-03 03:33:23 +0000
commitda27230f80795d0028333713f036d44c53cb0e68 (patch)
treeb3d379eaf000adf72b36cb01cdf4d79c3e3f064c /qemu/trace/control.c
parent0e68cb048bb8aadb14675f5d4286d8ab2fc35449 (diff)
parent437fd90c0250dee670290f9b714253671a990160 (diff)
Merge "These changes are the raw update to qemu-2.6."
Diffstat (limited to 'qemu/trace/control.c')
-rw-r--r--qemu/trace/control.c103
1 files changed, 76 insertions, 27 deletions
diff --git a/qemu/trace/control.c b/qemu/trace/control.c
index 995beb384..d099f735d 100644
--- a/qemu/trace/control.c
+++ b/qemu/trace/control.c
@@ -7,14 +7,23 @@
* See the COPYING file in the top-level directory.
*/
+#include "qemu/osdep.h"
#include "trace/control.h"
+#include "qemu/help_option.h"
#ifdef CONFIG_TRACE_SIMPLE
#include "trace/simple.h"
#endif
#ifdef CONFIG_TRACE_FTRACE
#include "trace/ftrace.h"
#endif
+#ifdef CONFIG_TRACE_LOG
+#include "qemu/log.h"
+#endif
#include "qemu/error-report.h"
+#include "monitor/monitor.h"
+
+int trace_events_enabled_count;
+bool trace_events_dstate[TRACE_EVENT_COUNT];
TraceEvent *trace_event_name(const char *name)
{
@@ -85,7 +94,54 @@ TraceEvent *trace_event_pattern(const char *pat, TraceEvent *ev)
return NULL;
}
-static void trace_init_events(const char *fname)
+void trace_list_events(void)
+{
+ int i;
+ for (i = 0; i < trace_event_count(); i++) {
+ TraceEvent *res = trace_event_id(i);
+ fprintf(stderr, "%s\n", trace_event_get_name(res));
+ }
+}
+
+static void do_trace_enable_events(const char *line_buf)
+{
+ const bool enable = ('-' != line_buf[0]);
+ const char *line_ptr = enable ? line_buf : line_buf + 1;
+
+ if (trace_event_is_pattern(line_ptr)) {
+ TraceEvent *ev = NULL;
+ while ((ev = trace_event_pattern(line_ptr, ev)) != NULL) {
+ if (trace_event_get_state_static(ev)) {
+ trace_event_set_state_dynamic(ev, enable);
+ }
+ }
+ } else {
+ TraceEvent *ev = trace_event_name(line_ptr);
+ if (ev == NULL) {
+ error_report("WARNING: trace event '%s' does not exist",
+ line_ptr);
+ } else if (!trace_event_get_state_static(ev)) {
+ error_report("WARNING: trace event '%s' is not traceable",
+ line_ptr);
+ } else {
+ trace_event_set_state_dynamic(ev, enable);
+ }
+ }
+}
+
+void trace_enable_events(const char *line_buf)
+{
+ if (is_help_option(line_buf)) {
+ trace_list_events();
+ if (cur_mon == NULL) {
+ exit(0);
+ }
+ } else {
+ do_trace_enable_events(line_buf);
+ }
+}
+
+void trace_init_events(const char *fname)
{
Location loc;
FILE *fp;
@@ -111,27 +167,7 @@ static void trace_init_events(const char *fname)
if ('#' == line_buf[0]) { /* skip commented lines */
continue;
}
- const bool enable = ('-' != line_buf[0]);
- char *line_ptr = enable ? line_buf : line_buf + 1;
- if (trace_event_is_pattern(line_ptr)) {
- TraceEvent *ev = NULL;
- while ((ev = trace_event_pattern(line_ptr, ev)) != NULL) {
- if (trace_event_get_state_static(ev)) {
- trace_event_set_state_dynamic(ev, enable);
- }
- }
- } else {
- TraceEvent *ev = trace_event_name(line_ptr);
- if (ev == NULL) {
- error_report("WARNING: trace event '%s' does not exist",
- line_ptr);
- } else if (!trace_event_get_state_static(ev)) {
- error_report("WARNING: trace event '%s' is not traceable",
- line_ptr);
- } else {
- trace_event_set_state_dynamic(ev, enable);
- }
- }
+ trace_enable_events(line_buf);
}
}
if (fclose(fp) != 0) {
@@ -142,17 +178,31 @@ static void trace_init_events(const char *fname)
loc_pop(&loc);
}
-bool trace_init_backends(const char *events, const char *file)
+void trace_init_file(const char *file)
{
#ifdef CONFIG_TRACE_SIMPLE
- if (!st_init(file)) {
- fprintf(stderr, "failed to initialize simple tracing backend.\n");
- return false;
+ st_set_trace_file(file);
+#elif defined CONFIG_TRACE_LOG
+ /* If both the simple and the log backends are enabled, "-trace file"
+ * only applies to the simple backend; use "-D" for the log backend.
+ */
+ if (file) {
+ qemu_set_log_filename(file);
}
#else
if (file) {
fprintf(stderr, "error: -trace file=...: "
"option not supported by the selected tracing backends\n");
+ exit(1);
+ }
+#endif
+}
+
+bool trace_init_backends(void)
+{
+#ifdef CONFIG_TRACE_SIMPLE
+ if (!st_init()) {
+ fprintf(stderr, "failed to initialize simple tracing backend.\n");
return false;
}
#endif
@@ -164,6 +214,5 @@ bool trace_init_backends(const char *events, const char *file)
}
#endif
- trace_init_events(events);
return true;
}