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trace: make the 'log' backend timestamp configurable
Timestamps in tracing output can be distracting. Make it possible to control tid/timestamp printing with -msg timestamp=on|off. The default is no tid/timestamps. Previously they were always printed. Suggested-by: BALATON Zoltan <balaton@eik.bme.hu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: BALATON Zoltan <balaton@eik.bme.hu> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20210125113507.224287-3-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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651d588f03
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2 changed files with 16 additions and 6 deletions
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@ -20,6 +20,7 @@ PUBLIC = True
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def generate_h_begin(events, group):
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out('#include "qemu/log-for-trace.h"',
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'#include "qemu/error-report.h"',
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'')
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@ -35,14 +36,20 @@ def generate_h(event, group):
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cond = "trace_event_get_state(%s)" % ("TRACE_" + event.name.upper())
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out(' if (%(cond)s && qemu_loglevel_mask(LOG_TRACE)) {',
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' struct timeval _now;',
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' gettimeofday(&_now, NULL);',
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' if (message_with_timestamp) {',
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' struct timeval _now;',
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' gettimeofday(&_now, NULL);',
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'#line %(event_lineno)d "%(event_filename)s"',
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' qemu_log("%%d@%%zu.%%06zu:%(name)s " %(fmt)s "\\n",',
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' qemu_get_thread_id(),',
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' (size_t)_now.tv_sec, (size_t)_now.tv_usec',
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' %(argnames)s);',
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' qemu_log("%%d@%%zu.%%06zu:%(name)s " %(fmt)s "\\n",',
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' qemu_get_thread_id(),',
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' (size_t)_now.tv_sec, (size_t)_now.tv_usec',
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' %(argnames)s);',
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'#line %(out_next_lineno)d "%(out_filename)s"',
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' } else {',
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'#line %(event_lineno)d "%(event_filename)s"',
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' qemu_log("%(name)s " %(fmt)s "\\n"%(argnames)s);',
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'#line %(out_next_lineno)d "%(out_filename)s"',
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' }',
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' }',
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cond=cond,
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event_lineno=event.lineno,
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