linux-kernel - Re: [RFC PATCH 4/5] RCU: Add TASK_RCU

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Message-ID: <1302077428.2225.1365.camel@twins>
Date:	Wed, 06 Apr 2011 10:10:28 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	paulmck@...ux.vnet.ibm.com
Cc:	Lai Jiangshan <laijs@...fujitsu.com>,
	Michal Marek <mmarek@...e.cz>,
	"H. Peter Anvin" <hpa@...ux.intel.com>,
	Jan Beulich <JBeulich@...ell.com>, Ingo Molnar <mingo@...e.hu>,
	Alexander van Heukelum <heukelum@...tmail.fm>,
	Dipankar Sarma <dipankar@...ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Sam Ravnborg <sam@...nborg.org>,
	David Howells <dhowells@...hat.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Roland McGrath <roland@...hat.com>,
	Serge Hallyn <serue@...ibm.com>, linux-kernel@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [RFC PATCH 4/5] RCU: Add TASK_RCU_OFFSET

On Tue, 2011-04-05 at 16:07 -0700, Paul E. McKenney wrote:
> 
> The next layer on this onion is the use of the ctl_table typedef
> in include/linux/key.h -- which is defined to be struct ctl_table.
> Anyone know where struct ctl_table is defined?  Color me blind, but I
> am not seeing it... 

include/linux/sysctl.h:1015

/* A sysctl table is an array of struct ctl_table: */
struct ctl_table
{
        const char *procname;           /* Text ID for /proc/sys, or zero */
        void *data;
        int maxlen;
        mode_t mode;
        struct ctl_table *child;
        struct ctl_table *parent;       /* Automatically set */
        proc_handler *proc_handler;     /* Callback for text formatting */
        void *extra1;
        void *extra2;
};

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