9d672e2904
The event filename is an absolute path. Convert it to a relative path when writing '#line' directives, to preserve reproducibility of the generated output when different base paths are used. Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20230406080045.21696-1-thomas.de_schampheleire@nokia.com>
58 lines
1.6 KiB
Python
58 lines
1.6 KiB
Python
# -*- coding: utf-8 -*-
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"""
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Ftrace built-in backend.
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"""
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__author__ = "Eiichi Tsukata <eiichi.tsukata.xh@hitachi.com>"
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__copyright__ = "Copyright (C) 2013 Hitachi, Ltd."
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__license__ = "GPL version 2 or (at your option) any later version"
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__maintainer__ = "Stefan Hajnoczi"
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__email__ = "stefanha@redhat.com"
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import os.path
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from tracetool import out
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PUBLIC = True
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def generate_h_begin(events, group):
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out('#include "trace/ftrace.h"',
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'')
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def generate_h(event, group):
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argnames = ", ".join(event.args.names())
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if len(event.args) > 0:
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argnames = ", " + argnames
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out(' {',
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' char ftrace_buf[MAX_TRACE_STRLEN];',
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' int unused __attribute__ ((unused));',
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' int trlen;',
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' if (trace_event_get_state(%(event_id)s)) {',
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'#line %(event_lineno)d "%(event_filename)s"',
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' trlen = snprintf(ftrace_buf, MAX_TRACE_STRLEN,',
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' "%(name)s " %(fmt)s "\\n" %(argnames)s);',
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'#line %(out_next_lineno)d "%(out_filename)s"',
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' trlen = MIN(trlen, MAX_TRACE_STRLEN - 1);',
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' unused = write(trace_marker_fd, ftrace_buf, trlen);',
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' }',
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' }',
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name=event.name,
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args=event.args,
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event_id="TRACE_" + event.name.upper(),
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event_lineno=event.lineno,
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event_filename=os.path.relpath(event.filename),
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fmt=event.fmt.rstrip("\n"),
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argnames=argnames)
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def generate_h_backend_dstate(event, group):
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out(' trace_event_get_state_dynamic_by_id(%(event_id)s) || \\',
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event_id="TRACE_" + event.name.upper())
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