mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
synced 2026-10-28 21:02:43 +01:00
Steven Rostedt (Google)
2c92ca849f
With the rework of how the __string() handles dynamic strings where it
saves off the source string in field in the helper structure[1], the
assignment of that value to the trace event field is stored in the helper
value and does not need to be passed in again.
This means that with:
__string(field, mystring)
Which use to be assigned with __assign_str(field, mystring), no longer
needs the second parameter and it is unused. With this, __assign_str()
will now only get a single parameter.
There's over 700 users of __assign_str() and because coccinelle does not
handle the TRACE_EVENT() macro I ended up using the following sed script:
git grep -l __assign_str | while read a ; do
sed -e 's/\(__assign_str([^,]*[^ ,]\) *,[^;]*/\1)/' $a > /tmp/test-file;
mv /tmp/test-file $a;
done
I then searched for __assign_str() that did not end with ';' as those
were multi line assignments that the sed script above would fail to catch.
Note, the same updates will need to be done for:
__assign_str_len()
__assign_rel_str()
__assign_rel_str_len()
I tested this with both an allmodconfig and an allyesconfig (build only for both).
[1] https://lore.kernel.org/linux-trace-kernel/[email protected]/
Link: https://lore.kernel.org/linux-trace-kernel/[email protected]
Cc: Masami Hiramatsu <[email protected]>
Cc: Mathieu Desnoyers <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Julia Lawall <[email protected]>
Signed-off-by: Steven Rostedt (Google) <[email protected]>
Acked-by: Jani Nikula <[email protected]>
Acked-by: Christian König <[email protected]> for the amdgpu parts.
Acked-by: Thomas Hellström <[email protected]> #for
Acked-by: Rafael J. Wysocki <[email protected]> # for thermal
Acked-by: Takashi Iwai <[email protected]>
Acked-by: Darrick J. Wong <[email protected]> # xfs
Tested-by: Guenter Roeck <[email protected]>
133 lines
3.0 KiB
C
133 lines
3.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM workqueue
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#if !defined(_TRACE_WORKQUEUE_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_WORKQUEUE_H
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#include <linux/tracepoint.h>
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#include <linux/workqueue.h>
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struct pool_workqueue;
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/**
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* workqueue_queue_work - called when a work gets queued
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* @req_cpu: the requested cpu
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* @pwq: pointer to struct pool_workqueue
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* @work: pointer to struct work_struct
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*
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* This event occurs when a work is queued immediately or once a
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* delayed work is actually queued on a workqueue (ie: once the delay
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* has been reached).
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*/
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TRACE_EVENT(workqueue_queue_work,
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TP_PROTO(int req_cpu, struct pool_workqueue *pwq,
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struct work_struct *work),
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TP_ARGS(req_cpu, pwq, work),
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TP_STRUCT__entry(
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__field( void *, work )
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__field( void *, function)
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__string( workqueue, pwq->wq->name)
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__field( int, req_cpu )
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__field( int, cpu )
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),
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TP_fast_assign(
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__entry->work = work;
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__entry->function = work->func;
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__assign_str(workqueue);
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__entry->req_cpu = req_cpu;
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__entry->cpu = pwq->pool->cpu;
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),
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TP_printk("work struct=%p function=%ps workqueue=%s req_cpu=%d cpu=%d",
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__entry->work, __entry->function, __get_str(workqueue),
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__entry->req_cpu, __entry->cpu)
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);
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/**
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* workqueue_activate_work - called when a work gets activated
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* @work: pointer to struct work_struct
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*
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* This event occurs when a queued work is put on the active queue,
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* which happens immediately after queueing unless @max_active limit
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* is reached.
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*/
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TRACE_EVENT(workqueue_activate_work,
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TP_PROTO(struct work_struct *work),
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TP_ARGS(work),
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TP_STRUCT__entry(
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__field( void *, work )
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__field( void *, function)
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),
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TP_fast_assign(
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__entry->work = work;
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__entry->function = work->func;
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),
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TP_printk("work struct %p function=%ps ", __entry->work, __entry->function)
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);
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/**
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* workqueue_execute_start - called immediately before the workqueue callback
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* @work: pointer to struct work_struct
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*
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* Allows to track workqueue execution.
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*/
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TRACE_EVENT(workqueue_execute_start,
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TP_PROTO(struct work_struct *work),
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TP_ARGS(work),
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TP_STRUCT__entry(
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__field( void *, work )
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__field( void *, function)
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),
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TP_fast_assign(
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__entry->work = work;
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__entry->function = work->func;
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),
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TP_printk("work struct %p: function %ps", __entry->work, __entry->function)
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);
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/**
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* workqueue_execute_end - called immediately after the workqueue callback
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* @work: pointer to struct work_struct
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* @function: pointer to worker function
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*
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* Allows to track workqueue execution.
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*/
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TRACE_EVENT(workqueue_execute_end,
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TP_PROTO(struct work_struct *work, work_func_t function),
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TP_ARGS(work, function),
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TP_STRUCT__entry(
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__field( void *, work )
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__field( void *, function)
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),
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TP_fast_assign(
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__entry->work = work;
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__entry->function = function;
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),
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TP_printk("work struct %p: function %ps", __entry->work, __entry->function)
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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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