From 08f87f769b595151be1afeff53e144f543faa614 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 06 Dec 2023 09:51:13 +0000
Subject: [PATCH] add dts config
---
kernel/arch/s390/mm/cmm.c | 61 ++++--------------------------
1 files changed, 9 insertions(+), 52 deletions(-)
diff --git a/kernel/arch/s390/mm/cmm.c b/kernel/arch/s390/mm/cmm.c
index a51c892..1141c8d 100644
--- a/kernel/arch/s390/mm/cmm.c
+++ b/kernel/arch/s390/mm/cmm.c
@@ -19,10 +19,8 @@
#include <linux/swap.h>
#include <linux/kthread.h>
#include <linux/oom.h>
-#include <linux/suspend.h>
#include <linux/uaccess.h>
-#include <asm/pgalloc.h>
#include <asm/diag.h>
#ifdef CONFIG_CMM_IUCV
@@ -49,7 +47,6 @@
static volatile long cmm_timed_pages_target;
static long cmm_timeout_pages;
static long cmm_timeout_seconds;
-static int cmm_suspended;
static struct cmm_page_array *cmm_page_list;
static struct cmm_page_array *cmm_timed_page_list;
@@ -151,9 +148,9 @@
while (1) {
rc = wait_event_interruptible(cmm_thread_wait,
- (!cmm_suspended && (cmm_pages != cmm_pages_target ||
- cmm_timed_pages != cmm_timed_pages_target)) ||
- kthread_should_stop());
+ cmm_pages != cmm_pages_target ||
+ cmm_timed_pages != cmm_timed_pages_target ||
+ kthread_should_stop());
if (kthread_should_stop() || rc == -ERESTARTSYS) {
cmm_pages_target = cmm_pages;
cmm_timed_pages_target = cmm_timed_pages;
@@ -191,7 +188,7 @@
del_timer(&cmm_timer);
return;
}
- mod_timer(&cmm_timer, jiffies + cmm_timeout_seconds * HZ);
+ mod_timer(&cmm_timer, jiffies + msecs_to_jiffies(cmm_timeout_seconds * MSEC_PER_SEC));
}
static void cmm_timer_fn(struct timer_list *unused)
@@ -247,7 +244,7 @@
}
static int cmm_pages_handler(struct ctl_table *ctl, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
+ void *buffer, size_t *lenp, loff_t *ppos)
{
long nr = cmm_get_pages();
struct ctl_table ctl_entry = {
@@ -266,7 +263,7 @@
}
static int cmm_timed_pages_handler(struct ctl_table *ctl, int write,
- void __user *buffer, size_t *lenp,
+ void *buffer, size_t *lenp,
loff_t *ppos)
{
long nr = cmm_get_timed_pages();
@@ -286,7 +283,7 @@
}
static int cmm_timeout_handler(struct ctl_table *ctl, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
+ void *buffer, size_t *lenp, loff_t *ppos)
{
char buf[64], *p;
long nr, seconds;
@@ -299,8 +296,7 @@
if (write) {
len = min(*lenp, sizeof(buf));
- if (copy_from_user(buf, buffer, len))
- return -EFAULT;
+ memcpy(buf, buffer, len);
buf[len - 1] = '\0';
cmm_skip_blanks(buf, &p);
nr = simple_strtoul(p, &p, 0);
@@ -313,8 +309,7 @@
cmm_timeout_pages, cmm_timeout_seconds);
if (len > *lenp)
len = *lenp;
- if (copy_to_user(buffer, buf, len))
- return -EFAULT;
+ memcpy(buffer, buf, len);
*lenp = len;
*ppos += len;
}
@@ -390,38 +385,6 @@
static struct ctl_table_header *cmm_sysctl_header;
-static int cmm_suspend(void)
-{
- cmm_suspended = 1;
- cmm_free_pages(cmm_pages, &cmm_pages, &cmm_page_list);
- cmm_free_pages(cmm_timed_pages, &cmm_timed_pages, &cmm_timed_page_list);
- return 0;
-}
-
-static int cmm_resume(void)
-{
- cmm_suspended = 0;
- cmm_kick_thread();
- return 0;
-}
-
-static int cmm_power_event(struct notifier_block *this,
- unsigned long event, void *ptr)
-{
- switch (event) {
- case PM_POST_HIBERNATION:
- return cmm_resume();
- case PM_HIBERNATION_PREPARE:
- return cmm_suspend();
- default:
- return NOTIFY_DONE;
- }
-}
-
-static struct notifier_block cmm_power_notifier = {
- .notifier_call = cmm_power_event,
-};
-
static int __init cmm_init(void)
{
int rc = -ENOMEM;
@@ -446,16 +409,11 @@
rc = register_oom_notifier(&cmm_oom_nb);
if (rc < 0)
goto out_oom_notify;
- rc = register_pm_notifier(&cmm_power_notifier);
- if (rc)
- goto out_pm;
cmm_thread_ptr = kthread_run(cmm_thread, NULL, "cmmthread");
if (!IS_ERR(cmm_thread_ptr))
return 0;
rc = PTR_ERR(cmm_thread_ptr);
- unregister_pm_notifier(&cmm_power_notifier);
-out_pm:
unregister_oom_notifier(&cmm_oom_nb);
out_oom_notify:
#ifdef CONFIG_CMM_IUCV
@@ -475,7 +433,6 @@
#ifdef CONFIG_CMM_IUCV
smsg_unregister_callback(SMSG_PREFIX, cmm_smsg_target);
#endif
- unregister_pm_notifier(&cmm_power_notifier);
unregister_oom_notifier(&cmm_oom_nb);
kthread_stop(cmm_thread_ptr);
del_timer_sync(&cmm_timer);
--
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