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LTTng supports tracef() and tracelog() macros, which work like printf, and are used to ease transition between logging and tracing. Messages printed using these macros end up as trace events. For our uses we are not interested in dropping logging, but it is nice to get log messages in trace output, so I've added a call to tracelog() in zlog that dumps our zlog messages as trace events. Signed-off-by: Quentin Young <qlyoung@nvidia.com>
122 lines
3.7 KiB
C
122 lines
3.7 KiB
C
/* Tracing
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*
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* Copyright (C) 2020 NVIDIA Corporation
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* Quentin Young
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; see the file COPYING; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#if !defined(_TRACE_H) || defined(TRACEPOINT_HEADER_MULTI_READ)
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#define _TRACE_H
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif /* HAVE_CONFIG_H */
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#ifdef HAVE_LTTNG
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#undef TRACEPOINT_PROVIDER
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#define TRACEPOINT_PROVIDER frr_libfrr
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#undef TRACEPOINT_INCLUDE
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#define TRACEPOINT_INCLUDE "./trace.h"
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#include <lttng/tracepoint.h>
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#include "hash.h"
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#include "thread.h"
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/* clang-format off */
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TRACEPOINT_EVENT(
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frr_libfrr,
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hash_get,
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TP_ARGS(struct hash *, hash, void *, data),
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TP_FIELDS(
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ctf_string(name, hash->name ? hash->name : "(unnamed)")
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ctf_integer(unsigned int, index_size, hash->size)
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ctf_integer(unsigned long, item_count, hash->count)
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ctf_integer_hex(intptr_t, data_ptr, data)
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)
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)
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TRACEPOINT_LOGLEVEL(frr_libfrr, hash_get, TRACE_INFO)
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TRACEPOINT_EVENT(
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frr_libfrr,
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hash_release,
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TP_ARGS(struct hash *, hash, void *, data, void *, released_item),
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TP_FIELDS(
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ctf_string(name, hash->name ? hash->name : "(unnamed)")
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ctf_integer(unsigned int, index_size, hash->size)
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ctf_integer(unsigned long, item_count, hash->count)
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ctf_integer_hex(intptr_t, data_ptr, data)
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ctf_integer_hex(intptr_t, released_item, data)
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)
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)
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TRACEPOINT_LOGLEVEL(frr_libfrr, hash_release, TRACE_INFO)
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#define THREAD_SCHEDULE_ARGS \
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TP_ARGS(struct thread_master *, master, const char *, funcname, \
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const char *, schedfrom, int, fromln, struct thread **, \
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thread_ptr, int, fd, int, val, void *, arg, long, time)
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TRACEPOINT_EVENT_CLASS(
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frr_libfrr,
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thread_operation,
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THREAD_SCHEDULE_ARGS,
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TP_FIELDS(
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ctf_string(threadmaster_name, master->name)
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ctf_string(function_name, funcname ? funcname : "(unknown function)")
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ctf_string(scheduled_from, schedfrom ? schedfrom : "(unknown file)")
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ctf_integer(int, scheduled_on_line, fromln)
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ctf_integer_hex(intptr_t, thread_addr, thread_ptr ? *thread_ptr : NULL)
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ctf_integer(int, file_descriptor, fd)
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ctf_integer(int, event_value, val)
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ctf_integer_hex(intptr_t, argument_ptr, arg)
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ctf_integer(long, timer, time)
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)
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)
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#define THREAD_OPERATION_TRACEPOINT_INSTANCE(name) \
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TRACEPOINT_EVENT_INSTANCE(frr_libfrr, thread_operation, name, \
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THREAD_SCHEDULE_ARGS) \
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TRACEPOINT_LOGLEVEL(frr_libfrr, name, TRACE_INFO)
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THREAD_OPERATION_TRACEPOINT_INSTANCE(schedule_timer)
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THREAD_OPERATION_TRACEPOINT_INSTANCE(schedule_event)
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THREAD_OPERATION_TRACEPOINT_INSTANCE(schedule_read)
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THREAD_OPERATION_TRACEPOINT_INSTANCE(schedule_write)
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THREAD_OPERATION_TRACEPOINT_INSTANCE(thread_cancel)
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THREAD_OPERATION_TRACEPOINT_INSTANCE(thread_cancel_async)
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THREAD_OPERATION_TRACEPOINT_INSTANCE(thread_call)
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/* clang-format on */
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#include <lttng/tracepoint-event.h>
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#include <lttng/tracelog.h>
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#else /* HAVE_LTTNG */
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#define tracepoint(...)
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#define tracef(...)
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#define tracelog(...)
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#define tracepoint_enabled(...) true
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#endif /* HAVE_LTTNG */
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#endif /* _TRACE_H */
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