Skip to main content

Browse the archive

Revision 530e9b76ae8f863dfdef4a6ad0b38613d32e8c3f authored by Thomas Gleixner on 21 December 2016, 19:19:53 UTC, committed by Thomas Gleixner on 25 December 2016, 09:47:43 UTC 
cpu/hotplug: Remove obsolete cpu hotplug register/unregister functions
 
hotcpu_notifier(), cpu_notifier(), __hotcpu_notifier(), __cpu_notifier(),
register_hotcpu_notifier(), register_cpu_notifier(),
__register_hotcpu_notifier(), __register_cpu_notifier(),
unregister_hotcpu_notifier(), unregister_cpu_notifier(),
__unregister_hotcpu_notifier(), __unregister_cpu_notifier()

are unused now. Remove them and all related code.

Remove also the now pointless cpu notifier error injection mechanism. The
states can be executed step by step and error rollback is the same as cpu
down, so any state transition can be tested w/o requiring the notifier
error injection.

Some CPU hotplug states are kept as they are (ab)used for hotplug state
tracking.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20161221192112.005642358@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
1 parent 7b73796
Raw File
sysctl_net_unix.c 
/*
 * NET4:	Sysctl interface to net af_unix subsystem.
 *
 * Authors:	Mike Shaver.
 *
 *		This program is free software; you can redistribute it and/or
 *		modify it under the terms of the GNU General Public License
 *		as published by the Free Software Foundation; either version
 *		2 of the License, or (at your option) any later version.
 */

#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/sysctl.h>

#include <net/af_unix.h>

static struct ctl_table unix_table[] = {
	{
		.procname	= "max_dgram_qlen",
		.data		= &init_net.unx.sysctl_max_dgram_qlen,
		.maxlen		= sizeof(int),
		.mode		= 0644,
		.proc_handler	= proc_dointvec
	},
	{ }
};

int __net_init unix_sysctl_register(struct net *net)
{
	struct ctl_table *table;

	table = kmemdup(unix_table, sizeof(unix_table), GFP_KERNEL);
	if (table == NULL)
		goto err_alloc;

	/* Don't export sysctls to unprivileged users */
	if (net->user_ns != &init_user_ns)
		table[0].procname = NULL;

	table[0].data = &net->unx.sysctl_max_dgram_qlen;
	net->unx.ctl = register_net_sysctl(net, "net/unix", table);
	if (net->unx.ctl == NULL)
		goto err_reg;

	return 0;

err_reg:
	kfree(table);
err_alloc:
	return -ENOMEM;
}

void unix_sysctl_unregister(struct net *net)
{
	struct ctl_table *table;

	table = net->unx.ctl->ctl_table_arg;
	unregister_net_sysctl_table(net->unx.ctl);
	kfree(table);
}
back to top