commit db817b8c500a60873eba80cbf047900ae5b32766
author Yaowei Bai <baiyaowei@cmss.chinamobile.com> Wed Jul 04 11:17:27 2018 +0800
committer Stefan Hajnoczi <stefanha@redhat.com> Thu Jul 19 13:09:04 2018 +0100
tree 65b34642bbcb8a848474c2c2a2d9dcb2ab3a08e0
parent ea6abffa8a08d832feb759d359d5b935e3087cf7

tracing: Use double-dash spelling for trace option

The '-trace' and '--trace' spellings are only both supported in qemu
binary, while for qemu-nbd or qemu-img only '--trace' spelling is
supported. So for the consistency of trace option invocation, we
should use double-dash spelling in our documentation.

This's also mentioned in
https://wiki.qemu.org/BiteSizedTasks#Consistent_option_usage_in_documentation
.

Signed-off-by: Yaowei Bai <baiyaowei@cmss.chinamobile.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1530674247-31200-1-git-send-email-baiyaowei@cmss.chinamobile.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

trace/control.h

diff --git a/trace/control.h b/trace/control.h
index eb65c8e..0716f90 100644
--- a/trace/control.h
+++ b/trace/control.h
@@ -193,7 +193,7 @@
 /**
  * trace_init_backends:
  * @file:   Name of trace output file; may be NULL.
- *          Corresponds to commandline option "-trace file=...".
+ *          Corresponds to commandline option "--trace file=...".
  *
  * Initialize the tracing backend.
  *
@@ -204,7 +204,7 @@
 /**
  * trace_init_file:
  * @file:   Name of trace output file; may be NULL.
- *          Corresponds to commandline option "-trace file=...".
+ *          Corresponds to commandline option "--trace file=...".
  *
  * Record the name of the output file for the tracing backend.
  * Exits if no selected backend does not support specifying the