Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *  Collaborative memory management interface.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *    Copyright IBM Corp 2003, 2010
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *    Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/moduleparam.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/gfp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/sysctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/ctype.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/swap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/kthread.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/oom.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include <asm/diag.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #ifdef CONFIG_CMM_IUCV
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) static char *cmm_default_sender = "VMRMSVM";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) static char *sender;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) module_param(sender, charp, 0400);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) MODULE_PARM_DESC(sender,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 		 "Guest name that may send SMSG messages (default VMRMSVM)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #include "../../../drivers/s390/net/smsgiucv.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #define CMM_NR_PAGES ((PAGE_SIZE / sizeof(unsigned long)) - 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) struct cmm_page_array {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	struct cmm_page_array *next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	unsigned long index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	unsigned long pages[CMM_NR_PAGES];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) static long cmm_pages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) static long cmm_timed_pages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) static volatile long cmm_pages_target;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) static volatile long cmm_timed_pages_target;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) static long cmm_timeout_pages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) static long cmm_timeout_seconds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) static struct cmm_page_array *cmm_page_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) static struct cmm_page_array *cmm_timed_page_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) static DEFINE_SPINLOCK(cmm_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) static struct task_struct *cmm_thread_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) static DECLARE_WAIT_QUEUE_HEAD(cmm_thread_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) static void cmm_timer_fn(struct timer_list *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) static void cmm_set_timer(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) static DEFINE_TIMER(cmm_timer, cmm_timer_fn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) static long cmm_alloc_pages(long nr, long *counter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 			    struct cmm_page_array **list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	struct cmm_page_array *pa, *npa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	unsigned long addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	while (nr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 		addr = __get_free_page(GFP_NOIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		if (!addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 		spin_lock(&cmm_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 		pa = *list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 		if (!pa || pa->index >= CMM_NR_PAGES) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 			/* Need a new page for the page list. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 			spin_unlock(&cmm_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 			npa = (struct cmm_page_array *)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 				__get_free_page(GFP_NOIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 			if (!npa) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 				free_page(addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 				break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 			spin_lock(&cmm_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 			pa = *list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 			if (!pa || pa->index >= CMM_NR_PAGES) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 				npa->next = pa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 				npa->index = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 				pa = npa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 				*list = pa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 			} else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 				free_page((unsigned long) npa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 		diag10_range(addr >> PAGE_SHIFT, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 		pa->pages[pa->index++] = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 		(*counter)++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 		spin_unlock(&cmm_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		nr--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	return nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) static long cmm_free_pages(long nr, long *counter, struct cmm_page_array **list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	struct cmm_page_array *pa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	unsigned long addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	spin_lock(&cmm_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	pa = *list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	while (nr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 		if (!pa || pa->index <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 		addr = pa->pages[--pa->index];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 		if (pa->index == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 			pa = pa->next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 			free_page((unsigned long) *list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 			*list = pa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 		free_page(addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 		(*counter)--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		nr--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	spin_unlock(&cmm_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	return nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) static int cmm_oom_notify(struct notifier_block *self,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 			  unsigned long dummy, void *parm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	unsigned long *freed = parm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	long nr = 256;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	nr = cmm_free_pages(nr, &cmm_timed_pages, &cmm_timed_page_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	if (nr > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 		nr = cmm_free_pages(nr, &cmm_pages, &cmm_page_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	cmm_pages_target = cmm_pages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	cmm_timed_pages_target = cmm_timed_pages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	*freed += 256 - nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	return NOTIFY_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) static struct notifier_block cmm_oom_nb = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	.notifier_call = cmm_oom_notify,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) static int cmm_thread(void *dummy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	while (1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		rc = wait_event_interruptible(cmm_thread_wait,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 			cmm_pages != cmm_pages_target ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 			cmm_timed_pages != cmm_timed_pages_target ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 			kthread_should_stop());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		if (kthread_should_stop() || rc == -ERESTARTSYS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 			cmm_pages_target = cmm_pages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 			cmm_timed_pages_target = cmm_timed_pages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		if (cmm_pages_target > cmm_pages) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 			if (cmm_alloc_pages(1, &cmm_pages, &cmm_page_list))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 				cmm_pages_target = cmm_pages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		} else if (cmm_pages_target < cmm_pages) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 			cmm_free_pages(1, &cmm_pages, &cmm_page_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		if (cmm_timed_pages_target > cmm_timed_pages) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 			if (cmm_alloc_pages(1, &cmm_timed_pages,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 					   &cmm_timed_page_list))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 				cmm_timed_pages_target = cmm_timed_pages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 		} else if (cmm_timed_pages_target < cmm_timed_pages) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 			cmm_free_pages(1, &cmm_timed_pages,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 				       &cmm_timed_page_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		if (cmm_timed_pages > 0 && !timer_pending(&cmm_timer))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 			cmm_set_timer();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) static void cmm_kick_thread(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	wake_up(&cmm_thread_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) static void cmm_set_timer(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	if (cmm_timed_pages_target <= 0 || cmm_timeout_seconds <= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 		if (timer_pending(&cmm_timer))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 			del_timer(&cmm_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	mod_timer(&cmm_timer, jiffies + msecs_to_jiffies(cmm_timeout_seconds * MSEC_PER_SEC));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) static void cmm_timer_fn(struct timer_list *unused)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	long nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	nr = cmm_timed_pages_target - cmm_timeout_pages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	if (nr < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 		cmm_timed_pages_target = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 		cmm_timed_pages_target = nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	cmm_kick_thread();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	cmm_set_timer();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) static void cmm_set_pages(long nr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	cmm_pages_target = nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	cmm_kick_thread();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) static long cmm_get_pages(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	return cmm_pages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) static void cmm_add_timed_pages(long nr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	cmm_timed_pages_target += nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	cmm_kick_thread();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) static long cmm_get_timed_pages(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	return cmm_timed_pages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) static void cmm_set_timeout(long nr, long seconds)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	cmm_timeout_pages = nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	cmm_timeout_seconds = seconds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	cmm_set_timer();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static int cmm_skip_blanks(char *cp, char **endp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	char *str;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	for (str = cp; *str == ' ' || *str == '\t'; str++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 		;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	*endp = str;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	return str != cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) static int cmm_pages_handler(struct ctl_table *ctl, int write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 			     void *buffer, size_t *lenp, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	long nr = cmm_get_pages();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	struct ctl_table ctl_entry = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 		.procname	= ctl->procname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		.data		= &nr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 		.maxlen		= sizeof(long),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	rc = proc_doulongvec_minmax(&ctl_entry, write, buffer, lenp, ppos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	if (rc < 0 || !write)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 		return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	cmm_set_pages(nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) static int cmm_timed_pages_handler(struct ctl_table *ctl, int write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 				   void *buffer, size_t *lenp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 				   loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	long nr = cmm_get_timed_pages();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	struct ctl_table ctl_entry = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 		.procname	= ctl->procname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 		.data		= &nr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 		.maxlen		= sizeof(long),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	rc = proc_doulongvec_minmax(&ctl_entry, write, buffer, lenp, ppos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	if (rc < 0 || !write)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 		return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	cmm_add_timed_pages(nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) static int cmm_timeout_handler(struct ctl_table *ctl, int write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 			       void *buffer, size_t *lenp, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	char buf[64], *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	long nr, seconds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	unsigned int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	if (!*lenp || (*ppos && !write)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 		*lenp = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	if (write) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 		len = min(*lenp, sizeof(buf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 		memcpy(buf, buffer, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 		buf[len - 1] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 		cmm_skip_blanks(buf, &p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 		nr = simple_strtoul(p, &p, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 		cmm_skip_blanks(p, &p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 		seconds = simple_strtoul(p, &p, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 		cmm_set_timeout(nr, seconds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 		*ppos += *lenp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 		len = sprintf(buf, "%ld %ld\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 			      cmm_timeout_pages, cmm_timeout_seconds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 		if (len > *lenp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 			len = *lenp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 		memcpy(buffer, buf, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 		*lenp = len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 		*ppos += len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) static struct ctl_table cmm_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 		.procname	= "cmm_pages",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 		.mode		= 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 		.proc_handler	= cmm_pages_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 		.procname	= "cmm_timed_pages",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 		.mode		= 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 		.proc_handler	= cmm_timed_pages_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 		.procname	= "cmm_timeout",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 		.mode		= 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 		.proc_handler	= cmm_timeout_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) static struct ctl_table cmm_dir_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 		.procname	= "vm",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 		.maxlen		= 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 		.mode		= 0555,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 		.child		= cmm_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) #ifdef CONFIG_CMM_IUCV
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) #define SMSG_PREFIX "CMM"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) static void cmm_smsg_target(const char *from, char *msg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 	long nr, seconds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 	if (strlen(sender) > 0 && strcmp(from, sender) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 	if (!cmm_skip_blanks(msg + strlen(SMSG_PREFIX), &msg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 	if (strncmp(msg, "SHRINK", 6) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 		if (!cmm_skip_blanks(msg + 6, &msg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 			return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 		nr = simple_strtoul(msg, &msg, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 		cmm_skip_blanks(msg, &msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 		if (*msg == '\0')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 			cmm_set_pages(nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 	} else if (strncmp(msg, "RELEASE", 7) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 		if (!cmm_skip_blanks(msg + 7, &msg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 			return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 		nr = simple_strtoul(msg, &msg, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 		cmm_skip_blanks(msg, &msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 		if (*msg == '\0')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 			cmm_add_timed_pages(nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 	} else if (strncmp(msg, "REUSE", 5) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 		if (!cmm_skip_blanks(msg + 5, &msg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 			return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 		nr = simple_strtoul(msg, &msg, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 		if (!cmm_skip_blanks(msg, &msg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 			return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 		seconds = simple_strtoul(msg, &msg, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 		cmm_skip_blanks(msg, &msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 		if (*msg == '\0')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 			cmm_set_timeout(nr, seconds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) static struct ctl_table_header *cmm_sysctl_header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) static int __init cmm_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 	int rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 	cmm_sysctl_header = register_sysctl_table(cmm_dir_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 	if (!cmm_sysctl_header)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 		goto out_sysctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) #ifdef CONFIG_CMM_IUCV
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 	/* convert sender to uppercase characters */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 	if (sender) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 		int len = strlen(sender);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 		while (len--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 			sender[len] = toupper(sender[len]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 		sender = cmm_default_sender;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 	rc = smsg_register_callback(SMSG_PREFIX, cmm_smsg_target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 	if (rc < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 		goto out_smsg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 	rc = register_oom_notifier(&cmm_oom_nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 	if (rc < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) 		goto out_oom_notify;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) 	cmm_thread_ptr = kthread_run(cmm_thread, NULL, "cmmthread");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 	if (!IS_ERR(cmm_thread_ptr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) 	rc = PTR_ERR(cmm_thread_ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) 	unregister_oom_notifier(&cmm_oom_nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) out_oom_notify:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) #ifdef CONFIG_CMM_IUCV
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) 	smsg_unregister_callback(SMSG_PREFIX, cmm_smsg_target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) out_smsg:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) 	unregister_sysctl_table(cmm_sysctl_header);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) out_sysctl:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) 	del_timer_sync(&cmm_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) 	return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) module_init(cmm_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) static void __exit cmm_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) 	unregister_sysctl_table(cmm_sysctl_header);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) #ifdef CONFIG_CMM_IUCV
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) 	smsg_unregister_callback(SMSG_PREFIX, cmm_smsg_target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) 	unregister_oom_notifier(&cmm_oom_nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) 	kthread_stop(cmm_thread_ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) 	del_timer_sync(&cmm_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) 	cmm_free_pages(cmm_pages, &cmm_pages, &cmm_page_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) 	cmm_free_pages(cmm_timed_pages, &cmm_timed_pages, &cmm_timed_page_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) module_exit(cmm_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) MODULE_LICENSE("GPL");