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From: Pavel Roskin <proski@gnu.org>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: "Arend van Spriel" <arend@broadcom.com>,
	"Rafał Miłecki" <zajec5@gmail.com>,
	"Alexey Dobriyan" <adobriyan@gmail.com>,
	"Geert Uytterhoeven" <geert@linux-m68k.org>,
	"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
	"linux-next@vger.kernel.org" <linux-next@vger.kernel.org>,
	"Linux Kernel Development" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH -next] bcma: main.c needs to include <linux/slab.h>
Date: Mon, 27 Jun 2011 13:22:12 -0400	[thread overview]
Message-ID: <4E08BC44.3020105@gnu.org> (raw)
In-Reply-To: <1309193844.3911.27.camel@jlt3.sipsolutions.net>

On 06/27/2011 12:57 PM, Johannes Berg wrote:

> Yeah, good rule. Consider if you have a.h, b.h and z.c, z.c needs b.h
> but not a.h, and now b.h includes a.h ("for convenience") -- changing
> a.h would needlessly recompile z.c. Now, changing slab.h will probably
> recompile everything anyway, but still...

In my configuration after touching slab.h and recompilation:

$ find -name '*.o' -newer ../linux3/include/linux/slab.h |wc -l
1508
$ find -name '*.o' |wc -l
1928

78% object files were recompiled, 22% were no recompiled.  Careful use 
of includes does save time.

-- 
Regards,
Pavel Roskin

  reply	other threads:[~2011-06-27 17:22 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-06-26  8:19 [PATCH -next] bcma: main.c needs to include <linux/slab.h> Geert Uytterhoeven
2011-06-26  8:19 ` Geert Uytterhoeven
2011-06-27 13:59 ` Rafał Miłecki
2011-06-27 14:09   ` Geert Uytterhoeven
2011-06-27 14:11     ` Rafał Miłecki
     [not found]   ` <BANLkTikSLx6FKvF518s99Q8eRU_WF+cn9A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-06-27 14:24     ` Alexey Dobriyan
2011-06-27 14:24       ` Alexey Dobriyan
     [not found]       ` <BANLkTinGvM79fza-=bFwcbtfFzGHAVKJag-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-06-27 14:43         ` Rafał Miłecki
2011-06-27 14:43           ` Rafał Miłecki
2011-06-27 16:49           ` Arend van Spriel
2011-06-27 16:57             ` Johannes Berg
2011-06-27 17:22               ` Pavel Roskin [this message]
2011-06-27 14:44         ` Pavel Roskin
2011-06-27 14:44           ` Pavel Roskin
     [not found]           ` <4E089730.1080306-mXXj517/zsQ@public.gmane.org>
2011-06-27 14:49             ` Rafał Miłecki
2011-06-27 14:49               ` Rafał Miłecki
2011-06-27 14:53               ` Geert Uytterhoeven
2011-06-27 15:00                 ` Rafał Miłecki
2011-06-28  7:58 ` Rafał Miłecki
2011-06-28  9:49   ` Geert Uytterhoeven

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