linux-ext4 - Re: [PATCH] ext4: delete some unused tracepoint definitions

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Message-ID: <20210216191855.GA21006@localhost.localdomain>
Date:   Tue, 16 Feb 2021 14:18:55 -0500
From:   Eric Whitney <enwlinux@...il.com>
To:     Eric Whitney <enwlinux@...il.com>
Cc:     linux-ext4@...r.kernel.org, tytso@....edu
Subject: Re: [PATCH] ext4: delete some unused tracepoint definitions

* Eric Whitney <enwlinux@...il.com>:
> A number of tracepoint instances have been removed from ext4 by past
> patches but the definitions of those tracepoints have not.
> 
> All instances of ext4_ext_in_cache and ext4_ext_put_in_cache were
> removed by "ext4: remove single extent cache" (69eb33dc24dc).
> ext4_get_reserved_cluster_alloc was removed by
> "ext4: reduce reserved cluster count by number of allocated clusters"
> (b6bf9171ef5c).
> ext4_find_delalloc_range was removed by
> "ext4: reimplement ext4_find_delay_alloc_range on extent status tree"
> (7d1b1fbc95eb).
> 
> Signed-off-by: Eric Whitney <enwlinux@...il.com>
> ---
>  include/trace/events/ext4.h | 118 ------------------------------------
>  1 file changed, 118 deletions(-)
> 
> diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h
> index 70ae5497b73a..3c3f40605391 100644
> --- a/include/trace/events/ext4.h
> +++ b/include/trace/events/ext4.h
> @@ -1962,124 +1962,6 @@ TRACE_EVENT(ext4_get_implied_cluster_alloc_exit,
>  		  __entry->len, show_mflags(__entry->flags), __entry->ret)
>  );
>  
> -TRACE_EVENT(ext4_ext_put_in_cache,
> -	TP_PROTO(struct inode *inode, ext4_lblk_t lblk, unsigned int len,
> -		 ext4_fsblk_t start),
> -
> -	TP_ARGS(inode, lblk, len, start),
> -
> -	TP_STRUCT__entry(
> -		__field(	dev_t,		dev	)
> -		__field(	ino_t,		ino	)
> -		__field(	ext4_lblk_t,	lblk	)
> -		__field(	unsigned int,	len	)
> -		__field(	ext4_fsblk_t,	start	)
> -	),
> -
> -	TP_fast_assign(
> -		__entry->dev	= inode->i_sb->s_dev;
> -		__entry->ino	= inode->i_ino;
> -		__entry->lblk	= lblk;
> -		__entry->len	= len;
> -		__entry->start	= start;
> -	),
> -
> -	TP_printk("dev %d,%d ino %lu lblk %u len %u start %llu",
> -		  MAJOR(__entry->dev), MINOR(__entry->dev),
> -		  (unsigned long) __entry->ino,
> -		  (unsigned) __entry->lblk,
> -		  __entry->len,
> -		  (unsigned long long) __entry->start)
> -);
> -
> -TRACE_EVENT(ext4_ext_in_cache,
> -	TP_PROTO(struct inode *inode, ext4_lblk_t lblk, int ret),
> -
> -	TP_ARGS(inode, lblk, ret),
> -
> -	TP_STRUCT__entry(
> -		__field(	dev_t,		dev	)
> -		__field(	ino_t,		ino	)
> -		__field(	ext4_lblk_t,	lblk	)
> -		__field(	int,		ret	)
> -	),
> -
> -	TP_fast_assign(
> -		__entry->dev	= inode->i_sb->s_dev;
> -		__entry->ino	= inode->i_ino;
> -		__entry->lblk	= lblk;
> -		__entry->ret	= ret;
> -	),
> -
> -	TP_printk("dev %d,%d ino %lu lblk %u ret %d",
> -		  MAJOR(__entry->dev), MINOR(__entry->dev),
> -		  (unsigned long) __entry->ino,
> -		  (unsigned) __entry->lblk,
> -		  __entry->ret)
> -
> -);
> -
> -TRACE_EVENT(ext4_find_delalloc_range,
> -	TP_PROTO(struct inode *inode, ext4_lblk_t from, ext4_lblk_t to,
> -		int reverse, int found, ext4_lblk_t found_blk),
> -
> -	TP_ARGS(inode, from, to, reverse, found, found_blk),
> -
> -	TP_STRUCT__entry(
> -		__field(	dev_t,		dev		)
> -		__field(	ino_t,		ino		)
> -		__field(	ext4_lblk_t,	from		)
> -		__field(	ext4_lblk_t,	to		)
> -		__field(	int,		reverse		)
> -		__field(	int,		found		)
> -		__field(	ext4_lblk_t,	found_blk	)
> -	),
> -
> -	TP_fast_assign(
> -		__entry->dev		= inode->i_sb->s_dev;
> -		__entry->ino		= inode->i_ino;
> -		__entry->from		= from;
> -		__entry->to		= to;
> -		__entry->reverse	= reverse;
> -		__entry->found		= found;
> -		__entry->found_blk	= found_blk;
> -	),
> -
> -	TP_printk("dev %d,%d ino %lu from %u to %u reverse %d found %d "
> -		  "(blk = %u)",
> -		  MAJOR(__entry->dev), MINOR(__entry->dev),
> -		  (unsigned long) __entry->ino,
> -		  (unsigned) __entry->from, (unsigned) __entry->to,
> -		  __entry->reverse, __entry->found,
> -		  (unsigned) __entry->found_blk)
> -);
> -
> -TRACE_EVENT(ext4_get_reserved_cluster_alloc,
> -	TP_PROTO(struct inode *inode, ext4_lblk_t lblk, unsigned int len),
> -
> -	TP_ARGS(inode, lblk, len),
> -
> -	TP_STRUCT__entry(
> -		__field(	dev_t,		dev	)
> -		__field(	ino_t,		ino	)
> -		__field(	ext4_lblk_t,	lblk	)
> -		__field(	unsigned int,	len	)
> -	),
> -
> -	TP_fast_assign(
> -		__entry->dev	= inode->i_sb->s_dev;
> -		__entry->ino	= inode->i_ino;
> -		__entry->lblk	= lblk;
> -		__entry->len	= len;
> -	),
> -
> -	TP_printk("dev %d,%d ino %lu lblk %u len %u",
> -		  MAJOR(__entry->dev), MINOR(__entry->dev),
> -		  (unsigned long) __entry->ino,
> -		  (unsigned) __entry->lblk,
> -		  __entry->len)
> -);
> -
>  TRACE_EVENT(ext4_ext_show_extent,
>  	TP_PROTO(struct inode *inode, ext4_lblk_t lblk, ext4_fsblk_t pblk,
>  		 unsigned short len),
> -- 
> 2.20.1
>

Please ignore this patch - I've posted an updated v2.

Thanks,
Eric