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From: Li Zefan <lizf@cn.fujitsu.com>
To: Dave Chinner <david@fromorbit.com>
Cc: linux-fsdevel@vger.kernel.org, akpm@linux-foundation.org,
	linux-kernel@vger.kernel.org, xfs@oss.sgi.com
Subject: Re: [PATCH 1/6] writeback: initial tracing support
Date: Fri, 04 Jun 2010 09:10:33 +0800	[thread overview]
Message-ID: <4C085289.9040000@cn.fujitsu.com> (raw)
In-Reply-To: <1275609328-12514-2-git-send-email-david@fromorbit.com>

> +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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WARNING: multiple messages have this Message-ID (diff)
From: Li Zefan <lizf@cn.fujitsu.com>
To: Dave Chinner <david@fromorbit.com>
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	xfs@oss.sgi.com, akpm@linux-foundation.org
Subject: Re: [PATCH 1/6] writeback: initial tracing support
Date: Fri, 04 Jun 2010 09:10:33 +0800	[thread overview]
Message-ID: <4C085289.9040000@cn.fujitsu.com> (raw)
In-Reply-To: <1275609328-12514-2-git-send-email-david@fromorbit.com>

> +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")
> +);

  reply	other threads:[~2010-06-04  1:05 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-06-03 23:55 [PATCH 0/6] writeback: tracing and fixes V3 Dave Chinner
2010-06-03 23:55 ` Dave Chinner
2010-06-03 23:55 ` [PATCH 1/6] writeback: initial tracing support Dave Chinner
2010-06-03 23:55   ` Dave Chinner
2010-06-04  1:10   ` Li Zefan [this message]
2010-06-04  1:10     ` Li Zefan
2010-06-04  1:24     ` Dave Chinner
2010-06-04  1:24       ` Dave Chinner
2010-06-03 23:55 ` [PATCH 2/6] writeback: Add tracing to balance_dirty_pages Dave Chinner
2010-06-03 23:55   ` Dave Chinner
2010-06-03 23:55 ` [PATCH 3/6] writeback: Add tracing to write_cache_pages Dave Chinner
2010-06-03 23:55   ` Dave Chinner
2010-06-04  7:51   ` Christoph Hellwig
2010-06-04  7:51     ` Christoph Hellwig
2010-06-03 23:55 ` [PATCH 4/6] writeback: pay attention to wbc->nr_to_write in write_cache_pages Dave Chinner
2010-06-03 23:55   ` Dave Chinner
2010-06-04  7:48   ` Christoph Hellwig
2010-06-04  7:48     ` Christoph Hellwig
2010-06-03 23:55 ` [PATCH 5/6] xfs: remove nr_to_write writeback windup Dave Chinner
2010-06-03 23:55   ` Dave Chinner
2010-06-03 23:55 ` [PATCH 6/6] writeback: limit write_cache_pages integrity scanning to current EOF Dave Chinner
2010-06-03 23:55   ` Dave Chinner
2010-06-04  7:52   ` Christoph Hellwig
2010-06-04  7:52     ` Christoph Hellwig
2010-06-04  7:56     ` Nick Piggin
2010-06-04  7:56       ` Nick Piggin
2010-06-04  7:49 ` [PATCH 0/6] writeback: tracing and fixes V3 Christoph Hellwig
2010-06-04  7:49   ` Christoph Hellwig
2010-06-08  0:11   ` Dave Chinner
2010-06-08  0:11     ` Dave Chinner
2010-06-08  8:03     ` Christoph Hellwig
2010-06-08  8:03       ` Christoph Hellwig
  -- strict thread matches above, loose matches on Subject: below --
2010-06-08  0:38 [PATCH 0/6] writeback: tracing and fixes V4 Dave Chinner
2010-06-08  0:38 ` [PATCH 1/6] writeback: initial tracing support Dave Chinner
2010-06-08  0:38   ` Dave Chinner
2010-05-25 10:54 [PATCH 0/6] writeback: tracing and fixes Dave Chinner
2010-05-25 10:54 ` [PATCH 1/6] writeback: initial tracing support Dave Chinner
2010-05-25 10:54   ` Dave Chinner
2010-05-25 11:13   ` Christoph Hellwig
2010-05-25 11:13     ` Christoph Hellwig
2010-05-27 21:32   ` Andrew Morton
2010-05-27 21:32     ` Andrew Morton
2010-05-28  0:44     ` Dave Chinner
2010-05-28  0:44       ` Dave Chinner
2010-05-28  1:20       ` Steven Rostedt
2010-05-28  1:20         ` Steven Rostedt
2010-05-28  1:18     ` Steven Rostedt
2010-05-28  1:18       ` Steven Rostedt
2010-05-28  7:45     ` Christoph Hellwig
2010-05-28  7:45       ` Christoph Hellwig

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