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tracing: Use double-dash spelling for trace option

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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>
This commit is contained in:
Yaowei Bai 2018-07-04 11:17:27 +08:00 • committed by Stefan Hajnoczi
parent ea6abffa8a
commit db817b8c50
3 changed files with 7 additions and 7 deletions
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4
trace/control.h
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@ -193,7 +193,7 @@ void trace_event_set_vcpu_state_dynamic(CPUState *vcpu,
/**
* 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 @@ bool trace_init_backends(void);
/**
* 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