linux-kernel - Re: [PATCH 2/9] tracing: Convert some kmem events to DEFINE

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Message-ID: <4B0E2D3A.1030509@cs.helsinki.fi>
Date:	Thu, 26 Nov 2009 09:24:42 +0200
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	Li Zefan <lizf@...fujitsu.com>
CC:	Ingo Molnar <mingo@...e.hu>, Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	LKML <linux-kernel@...r.kernel.org>, Mel Gorman <mel@....ul.ie>
Subject: Re: [PATCH 2/9] tracing: Convert some kmem events to DEFINE_EVENT

Li Zefan kirjoitti:
> Use TRACE_EVENT_TEMPLATE to remove duplicate code:
> 
>    text    data     bss     dec     hex filename
>  333987   69800   27228  431015   693a7 mm/built-in.o.old
>  330030   69800   27228  427058   68432 mm/built-in.o
> 
> 8 events are converted:
> 
>   kmem_alloc: kmalloc, kmem_cache_alloc
>   kmem_alloc_node: kmalloc_node, kmem_cache_alloc_node
>   kmem_free: kfree, kmem_cache_free
>   mm_page: mm_page_alloc_zone_locked, mm_page_pcpu_drain
> 
> Signed-off-by: Li Zefan <lizf@...fujitsu.com>

I have no idea what TRACE_EVENT_TEMPLATE is but the space savings are 
convincing enough! I assume this is going into -tip?

Acked-by: Pekka Enberg <penberg@...helsinki.fi>
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