linux-kernel - Re: [PATCH -next 1/3] block, bfq: remove unused functions

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Message-ID: <20220817115501.bwfpvdgppwd4p55y@quack3>
Date:   Wed, 17 Aug 2022 13:55:01 +0200
From:   Jan Kara <jack@...e.cz>
To:     Yu Kuai <yukuai1@...weicloud.com>
Cc:     jack@...e.cz, axboe@...nel.dk, paolo.valente@...aro.org,
        cgroups@...r.kernel.org, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, yukuai3@...wei.com,
        yi.zhang@...wei.com
Subject: Re: [PATCH -next 1/3] block, bfq: remove unused functions

On Tue 16-08-22 09:56:29, Yu Kuai wrote:
> From: Yu Kuai <yukuai3@...wei.com>
> 
> While doing code coverage testing(CONFIG_BFQ_CGROUP_DEBUG is disabled), we
> found that some functions doesn't have caller, thus remove them.
> 
> Signed-off-by: Yu Kuai <yukuai3@...wei.com>

Looks good. Feel free to add:

Reviewed-by: Jan Kara <jack@...e.cz>

								Honza

> ---
>  block/bfq-cgroup.c  |  5 -----
>  block/bfq-iosched.h | 13 ++++++++-----
>  2 files changed, 8 insertions(+), 10 deletions(-)
> 
> diff --git a/block/bfq-cgroup.c b/block/bfq-cgroup.c
> index 30b15a9a47c4..144bca006463 100644
> --- a/block/bfq-cgroup.c
> +++ b/block/bfq-cgroup.c
> @@ -254,17 +254,12 @@ void bfqg_stats_update_completion(struct bfq_group *bfqg, u64 start_time_ns,
>  
>  #else /* CONFIG_BFQ_CGROUP_DEBUG */
>  
> -void bfqg_stats_update_io_add(struct bfq_group *bfqg, struct bfq_queue *bfqq,
> -			      blk_opf_t opf) { }
>  void bfqg_stats_update_io_remove(struct bfq_group *bfqg, blk_opf_t opf) { }
>  void bfqg_stats_update_io_merged(struct bfq_group *bfqg, blk_opf_t opf) { }
>  void bfqg_stats_update_completion(struct bfq_group *bfqg, u64 start_time_ns,
>  				  u64 io_start_time_ns, blk_opf_t opf) { }
>  void bfqg_stats_update_dequeue(struct bfq_group *bfqg) { }
> -void bfqg_stats_set_start_empty_time(struct bfq_group *bfqg) { }
> -void bfqg_stats_update_idle_time(struct bfq_group *bfqg) { }
>  void bfqg_stats_set_start_idle_time(struct bfq_group *bfqg) { }
> -void bfqg_stats_update_avg_queue_size(struct bfq_group *bfqg) { }
>  
>  #endif /* CONFIG_BFQ_CGROUP_DEBUG */
>  
> diff --git a/block/bfq-iosched.h b/block/bfq-iosched.h
> index ad8e513d7e87..f81ab3c8fa3c 100644
> --- a/block/bfq-iosched.h
> +++ b/block/bfq-iosched.h
> @@ -993,20 +993,23 @@ void bfq_put_async_queues(struct bfq_data *bfqd, struct bfq_group *bfqg);
>  /* ---------------- cgroups-support interface ---------------- */
>  
>  void bfqg_stats_update_legacy_io(struct request_queue *q, struct request *rq);
> -void bfqg_stats_update_io_add(struct bfq_group *bfqg, struct bfq_queue *bfqq,
> -			      blk_opf_t opf);
>  void bfqg_stats_update_io_remove(struct bfq_group *bfqg, blk_opf_t opf);
>  void bfqg_stats_update_io_merged(struct bfq_group *bfqg, blk_opf_t opf);
>  void bfqg_stats_update_completion(struct bfq_group *bfqg, u64 start_time_ns,
>  				  u64 io_start_time_ns, blk_opf_t opf);
>  void bfqg_stats_update_dequeue(struct bfq_group *bfqg);
> -void bfqg_stats_set_start_empty_time(struct bfq_group *bfqg);
> -void bfqg_stats_update_idle_time(struct bfq_group *bfqg);
>  void bfqg_stats_set_start_idle_time(struct bfq_group *bfqg);
> -void bfqg_stats_update_avg_queue_size(struct bfq_group *bfqg);
>  void bfq_bfqq_move(struct bfq_data *bfqd, struct bfq_queue *bfqq,
>  		   struct bfq_group *bfqg);
>  
> +#ifdef CONFIG_BFQ_CGROUP_DEBUG
> +void bfqg_stats_update_io_add(struct bfq_group *bfqg, struct bfq_queue *bfqq,
> +			      blk_opf_t opf);
> +void bfqg_stats_set_start_empty_time(struct bfq_group *bfqg);
> +void bfqg_stats_update_idle_time(struct bfq_group *bfqg);
> +void bfqg_stats_update_avg_queue_size(struct bfq_group *bfqg);
> +#endif
> +
>  void bfq_init_entity(struct bfq_entity *entity, struct bfq_group *bfqg);
>  void bfq_bic_update_cgroup(struct bfq_io_cq *bic, struct bio *bio);
>  void bfq_end_wr_async(struct bfq_data *bfqd);
> -- 
> 2.31.1
> 
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR