fb39125fd7
v3: zhaolei@cn.fujitsu.com: Change TRACE_EVENT definition to new format
introduced by Steven Rostedt: consolidate trace and trace_event headers
v2: kosaki@jp.fujitsu.com: print the function names instead of addr, and zap
the work addr
v1: zhaolei@cn.fujitsu.com: Make workqueue tracepoints use TRACE_EVENT macro
TRACE_EVENT is a more generic way to define tracepoints.
Doing so adds these new capabilities to the tracepoints:
- zero-copy and per-cpu splice() tracing
- binary tracing without printf overhead
- structured logging records exposed under /debug/tracing/events
- trace events embedded in function tracer output and other plugins
- user-defined, per tracepoint filter expressions
Then, this patch converts DEFINE_TRACE to TRACE_EVENT in workqueue related
tracepoints.
[ Impact: expand workqueue tracer to events tracing ]
Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Tom Zanussi <tzanussi@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
100 lines
2.3 KiB
C
100 lines
2.3 KiB
C
#if !defined(_TRACE_WORKQUEUE_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_WORKQUEUE_H
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#include <linux/workqueue.h>
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#include <linux/sched.h>
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#include <linux/tracepoint.h>
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM workqueue
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TRACE_EVENT(workqueue_insertion,
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TP_PROTO(struct task_struct *wq_thread, struct work_struct *work),
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TP_ARGS(wq_thread, work),
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TP_STRUCT__entry(
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__array(char, thread_comm, TASK_COMM_LEN)
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__field(pid_t, thread_pid)
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__field(work_func_t, func)
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),
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TP_fast_assign(
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memcpy(__entry->thread_comm, wq_thread->comm, TASK_COMM_LEN);
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__entry->thread_pid = wq_thread->pid;
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__entry->func = work->func;
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),
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TP_printk("thread=%s:%d func=%pF", __entry->thread_comm,
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__entry->thread_pid, __entry->func)
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);
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TRACE_EVENT(workqueue_execution,
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TP_PROTO(struct task_struct *wq_thread, struct work_struct *work),
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TP_ARGS(wq_thread, work),
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TP_STRUCT__entry(
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__array(char, thread_comm, TASK_COMM_LEN)
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__field(pid_t, thread_pid)
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__field(work_func_t, func)
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),
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TP_fast_assign(
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memcpy(__entry->thread_comm, wq_thread->comm, TASK_COMM_LEN);
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__entry->thread_pid = wq_thread->pid;
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__entry->func = work->func;
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),
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TP_printk("thread=%s:%d func=%pF", __entry->thread_comm,
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__entry->thread_pid, __entry->func)
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);
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/* Trace the creation of one workqueue thread on a cpu */
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TRACE_EVENT(workqueue_creation,
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TP_PROTO(struct task_struct *wq_thread, int cpu),
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TP_ARGS(wq_thread, cpu),
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TP_STRUCT__entry(
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__array(char, thread_comm, TASK_COMM_LEN)
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__field(pid_t, thread_pid)
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__field(int, cpu)
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),
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TP_fast_assign(
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memcpy(__entry->thread_comm, wq_thread->comm, TASK_COMM_LEN);
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__entry->thread_pid = wq_thread->pid;
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__entry->cpu = cpu;
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),
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TP_printk("thread=%s:%d cpu=%d", __entry->thread_comm,
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__entry->thread_pid, __entry->cpu)
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);
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TRACE_EVENT(workqueue_destruction,
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TP_PROTO(struct task_struct *wq_thread),
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TP_ARGS(wq_thread),
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TP_STRUCT__entry(
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__array(char, thread_comm, TASK_COMM_LEN)
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__field(pid_t, thread_pid)
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),
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TP_fast_assign(
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memcpy(__entry->thread_comm, wq_thread->comm, TASK_COMM_LEN);
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__entry->thread_pid = wq_thread->pid;
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),
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TP_printk("thread=%s:%d", __entry->thread_comm, __entry->thread_pid)
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);
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#endif /* _TRACE_WORKQUEUE_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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