linux-kernel - Re: [PATCH] mm: compaction: show gfp flag names in try_to_compact

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Message-ID: <20190312161705.GB5721@dhcp22.suse.cz>
Date:   Tue, 12 Mar 2019 17:17:05 +0100
From:   Michal Hocko <mhocko@...nel.org>
To:     Yafang Shao <laoar.shao@...il.com>
Cc:     vbabka@...e.cz, jrdr.linux@...il.com, akpm@...ux-foundation.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        shaoyafang@...iglobal.com
Subject: Re: [PATCH] mm: compaction: show gfp flag names in
 try_to_compact_pages tracepoint

On Sat 02-03-19 12:38:57, Yafang Shao wrote:
> show the gfp flag names instead of the gfp_mask could make the trace
> more convenient.

Agreed

> Signed-off-by: Yafang Shao <laoar.shao@...il.com>

Acked-by: Michal Hocko <mhocko@...e.com>

> ---
>  include/trace/events/compaction.h | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/include/trace/events/compaction.h b/include/trace/events/compaction.h
> index 6074eff..e66afb818 100644
> --- a/include/trace/events/compaction.h
> +++ b/include/trace/events/compaction.h
> @@ -189,9 +189,9 @@
>  		__entry->prio = prio;
>  	),
>  
> -	TP_printk("order=%d gfp_mask=0x%x priority=%d",
> +	TP_printk("order=%d gfp_mask=%s priority=%d",
>  		__entry->order,
> -		__entry->gfp_mask,
> +		show_gfp_flags(__entry->gfp_mask),
>  		__entry->prio)
>  );
>  
> -- 
> 1.8.3.1
> 

-- 
Michal Hocko
SUSE Labs