From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/kernel/ksysfs.c | 19 ++++++-------------
1 files changed, 6 insertions(+), 13 deletions(-)
diff --git a/kernel/kernel/ksysfs.c b/kernel/kernel/ksysfs.c
index dfff31e..e20c19e 100644
--- a/kernel/kernel/ksysfs.c
+++ b/kernel/kernel/ksysfs.c
@@ -106,7 +106,12 @@
static ssize_t kexec_crash_size_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
- return sprintf(buf, "%zu\n", crash_get_memory_size());
+ ssize_t size = crash_get_memory_size();
+
+ if (size < 0)
+ return size;
+
+ return sprintf(buf, "%zd\n", size);
}
static ssize_t kexec_crash_size_store(struct kobject *kobj,
struct kobj_attribute *attr,
@@ -137,15 +142,6 @@
KERNEL_ATTR_RO(vmcoreinfo);
#endif /* CONFIG_CRASH_CORE */
-
-#if defined(CONFIG_PREEMPT_RT)
-static ssize_t realtime_show(struct kobject *kobj,
- struct kobj_attribute *attr, char *buf)
-{
- return sprintf(buf, "%d\n", 1);
-}
-KERNEL_ATTR_RO(realtime);
-#endif
/* whether file capabilities are enabled */
static ssize_t fscaps_show(struct kobject *kobj,
@@ -237,9 +233,6 @@
#ifndef CONFIG_TINY_RCU
&rcu_expedited_attr.attr,
&rcu_normal_attr.attr,
-#endif
-#ifdef CONFIG_PREEMPT_RT
- &realtime_attr.attr,
#endif
NULL
};
--
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