// SPDX-License-Identifier: GPL-2.0
/*
 *	Linux Magic System Request Key Hacks
 *
 *	(c) 1997 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
 *	based on ideas by Pavel Machek <pavel@atrey.karlin.mff.cuni.cz>
 *
 *	(c) 2000 Crutcher Dunnavant <crutcher+kernel@datastacks.com>
 *	overhauled to use key registration
 *	based upon discusions in irc://irc.openprojects.net/#kernelnewbies
 *
 *	Copyright (c) 2010 Dmitry Torokhov
 *	Input handler conversion
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

/*
 * Official Linux v6.18: drivers/tty/sysrq.c
 * https://github.com/torvalds/linux/blob/v6.18/drivers/tty/sysrq.c#L385
 * Complete upstream scope, not an elided book-code reconstruction.
 * See GPL-2.0.txt. Not a standalone translation unit.
 */

static void moom_callback(struct work_struct *ignored)
{
	const gfp_t gfp_mask = GFP_KERNEL;
	struct oom_control oc = {
		.zonelist = node_zonelist(first_memory_node, gfp_mask),
		.nodemask = NULL,
		.memcg = NULL,
		.gfp_mask = gfp_mask,
		.order = -1,
	};

	mutex_lock(&oom_lock);
	if (!out_of_memory(&oc))
		pr_info("OOM request ignored. No task eligible\n");
	mutex_unlock(&oom_lock);
}