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[PATCH 1/1] trace: Send "-d trace:help" output to stdout
From: |
Doug Evans |
Subject: |
[PATCH 1/1] trace: Send "-d trace:help" output to stdout |
Date: |
Wed, 25 Nov 2020 13:52:45 -0800 |
... for consistency with "-d help".
Signed-off-by: Doug Evans <dje@google.com>
---
trace/control.c | 12 ++++++------
trace/control.h | 3 ++-
2 files changed, 8 insertions(+), 7 deletions(-)
diff --git a/trace/control.c b/trace/control.c
index b82fb87316..cd04dd4e0c 100644
--- a/trace/control.c
+++ b/trace/control.c
@@ -125,18 +125,18 @@ TraceEvent *trace_event_iter_next(TraceEventIter *iter)
return NULL;
}
-void trace_list_events(void)
+void trace_list_events(FILE *f)
{
TraceEventIter iter;
TraceEvent *ev;
trace_event_iter_init(&iter, NULL);
while ((ev = trace_event_iter_next(&iter)) != NULL) {
- fprintf(stderr, "%s\n", trace_event_get_name(ev));
+ fprintf(f, "%s\n", trace_event_get_name(ev));
}
#ifdef CONFIG_TRACE_DTRACE
- fprintf(stderr, "This list of names of trace points may be incomplete "
- "when using the DTrace/SystemTap backends.\n"
- "Run 'qemu-trace-stap list %s' to print the full list.\n",
+ fprintf(f, "This list of names of trace points may be incomplete "
+ "when using the DTrace/SystemTap backends.\n"
+ "Run 'qemu-trace-stap list %s' to print the full list.\n",
error_get_progname());
#endif
}
@@ -176,7 +176,7 @@ static void do_trace_enable_events(const char *line_buf)
void trace_enable_events(const char *line_buf)
{
if (is_help_option(line_buf)) {
- trace_list_events();
+ trace_list_events(stdout);
if (monitor_cur() == NULL) {
exit(0);
}
diff --git a/trace/control.h b/trace/control.h
index 05b95ea453..9522a7b318 100644
--- a/trace/control.h
+++ b/trace/control.h
@@ -201,10 +201,11 @@ void trace_fini_vcpu(CPUState *vcpu);
/**
* trace_list_events:
+ * @f: Where to send output.
*
* List all available events.
*/
-void trace_list_events(void);
+void trace_list_events(FILE *f);
/**
* trace_enable_events:
--
2.29.2.454.gaff20da3a2-goog
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