> +TRACE_EVENT(writeback_queue,
> +
> + TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_args *args),
> +
> + TP_ARGS(bdi, args),
> +
> + TP_STRUCT__entry(
> + __array(char, name, 16)
> + __field(long, nr_pages)
> + __field(int, sb)
> + __field(int, sync_mode)
> + __field(int, for_kupdate)
> + __field(int, range_cyclic)
> + __field(int, for_background)
> + ),
> +
> + TP_fast_assign(
> + strncpy(__entry->name, dev_name(bdi->dev), 16);
Should use strlcpy() ?
> + __entry->nr_pages = args->nr_pages;
> + __entry->sb = !!args->sb;
> + __entry->for_kupdate = args->for_kupdate;
> + __entry->range_cyclic = args->range_cyclic;
> + __entry->for_background = args->for_background;
> + ),
> +
> + TP_printk("%s: pages=%ld, sb=%d, kupdate=%d, range_cyclic=%d "
> + "for_background=%d", __entry->name, __entry->nr_pages,
> + __entry->sb, __entry->for_kupdate,
> + __entry->range_cyclic, __entry->for_background)
> +);
> +
> +TRACE_EVENT(writeback_sched,
> +
> + TP_PROTO(struct backing_dev_info *bdi, struct bdi_work *work,
> + const char *msg),
> +
> + TP_ARGS(bdi, work, msg),
> +
> + TP_STRUCT__entry(
> + __array(char, name, 16)
> + __field(unsigned int, work)
> + __array(char, task, 8)
> + ),
> +
> + TP_fast_assign(
> + strncpy(__entry->name, dev_name(bdi->dev), 16);
ditto
> + __entry->work = (unsigned long) work & 0xffff;
> + snprintf(__entry->task, 8, "%s", msg);
> + ),
> +
> + TP_printk("work=%x, task=%s", __entry->work, __entry->task)
> +);
...
> +TRACE_EVENT(writeback_bdi_register,
> +
> + TP_PROTO(const char *name, int start),
> +
> + TP_ARGS(name, start),
> +
> + TP_STRUCT__entry(
> + __array(char, name, 16)
> + __field(int, start)
> + ),
> +
> + TP_fast_assign(
> + strncpy(__entry->name, name, 16);
ditto
> + __entry->start = start;
> + ),
> +
> + TP_printk("%s: %s", __entry->name,
> + __entry->start ? "registered" : "unregistered")
> +);
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