linux-kernel - Re: how to look for source code in kernel

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Date:	Fri, 28 Dec 2012 13:31:39 -0800
From:	Joe Perches <joe@...ches.com>
To:	Al Viro <viro@...IV.linux.org.uk>
Cc:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	anish singh <anish198519851985@...il.com>,
	amit mehta <gmate.amit@...il.com>,
	Henrique Rodrigues <henriquesilvar@...il.com>,
	kishore kumar <kishoreopen@...il.com>,
	Jonathan Neusch??fer <j.neuschaefer@....net>,
	linux-kernel@...r.kernel.org, Kernelnewbies@...nelnewbies.org
Subject: Re: how to look for source code in kernel

On Fri, 2012-12-28 at 16:09 +0000, Al Viro wrote:
> On Thu, Dec 27, 2012 at 11:36:13PM -0800, Eric W. Biederman wrote:
> > But then I am probably peculiar keeping an index of the source code in
> > my head.  When I need to look for something and I don't know where to
> > find it I do.
> > 
> > git-ls-files | xargs fgrep 'struct f2fs_inode'
> 
> What's wrong with git grep?

Positive: it loads multiple cpus with very little file I/O
Negative: it doesn't use -P very well.
          it won't spans lines like:

	struct name
	{

with git grep -P "\bstruct\s+\w+\s*{"

(the last grep that does I believe is 2.54)


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