1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
From 8e6eb9e51cf4c4efeeb61910c35b01dcce2ec502 Mon Sep 17 00:00:00 2001
From: John Ogness <john.ogness@linutronix.de>
Date: Thu, 18 Feb 2021 17:37:41 +0100
Subject: [PATCH 098/323] printk: convert @syslog_lock to spin_lock
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.204-rt100.tar.xz
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
kernel/printk/printk.c | 30 +++++++++++++++---------------
1 file changed, 15 insertions(+), 15 deletions(-)
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 90a4cf4c23a4..57f3b8d7f35c 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -358,7 +358,7 @@ enum log_flags {
};
/* syslog_lock protects syslog_* variables and write access to clear_seq. */
-static DEFINE_RAW_SPINLOCK(syslog_lock);
+static DEFINE_SPINLOCK(syslog_lock);
#ifdef CONFIG_PRINTK
DECLARE_WAIT_QUEUE_HEAD(log_wait);
@@ -1482,9 +1482,9 @@ static int syslog_print(char __user *buf, int size)
size_t n;
size_t skip;
- raw_spin_lock_irq(&syslog_lock);
+ spin_lock_irq(&syslog_lock);
if (!prb_read_valid(prb, syslog_seq, &r)) {
- raw_spin_unlock_irq(&syslog_lock);
+ spin_unlock_irq(&syslog_lock);
break;
}
if (r.info->seq != syslog_seq) {
@@ -1513,7 +1513,7 @@ static int syslog_print(char __user *buf, int size)
syslog_partial += n;
} else
n = 0;
- raw_spin_unlock_irq(&syslog_lock);
+ spin_unlock_irq(&syslog_lock);
if (!n)
break;
@@ -1577,9 +1577,9 @@ static int syslog_print_all(char __user *buf, int size, bool clear)
}
if (clear) {
- raw_spin_lock_irq(&syslog_lock);
+ spin_lock_irq(&syslog_lock);
latched_seq_write(&clear_seq, seq);
- raw_spin_unlock_irq(&syslog_lock);
+ spin_unlock_irq(&syslog_lock);
}
kfree(text);
@@ -1588,9 +1588,9 @@ static int syslog_print_all(char __user *buf, int size, bool clear)
static void syslog_clear(void)
{
- raw_spin_lock_irq(&syslog_lock);
+ spin_lock_irq(&syslog_lock);
latched_seq_write(&clear_seq, prb_next_seq(prb));
- raw_spin_unlock_irq(&syslog_lock);
+ spin_unlock_irq(&syslog_lock);
}
/* Return a consistent copy of @syslog_seq. */
@@ -1598,9 +1598,9 @@ static u64 read_syslog_seq_irq(void)
{
u64 seq;
- raw_spin_lock_irq(&syslog_lock);
+ spin_lock_irq(&syslog_lock);
seq = syslog_seq;
- raw_spin_unlock_irq(&syslog_lock);
+ spin_unlock_irq(&syslog_lock);
return seq;
}
@@ -1678,10 +1678,10 @@ int do_syslog(int type, char __user *buf, int len, int source)
break;
/* Number of chars in the log buffer */
case SYSLOG_ACTION_SIZE_UNREAD:
- raw_spin_lock_irq(&syslog_lock);
+ spin_lock_irq(&syslog_lock);
if (!prb_read_valid_info(prb, syslog_seq, &info, NULL)) {
/* No unread messages. */
- raw_spin_unlock_irq(&syslog_lock);
+ spin_unlock_irq(&syslog_lock);
return 0;
}
if (info.seq != syslog_seq) {
@@ -1709,7 +1709,7 @@ int do_syslog(int type, char __user *buf, int len, int source)
}
error -= syslog_partial;
}
- raw_spin_unlock_irq(&syslog_lock);
+ spin_unlock_irq(&syslog_lock);
break;
/* Size of the log buffer */
case SYSLOG_ACTION_SIZE_BUFFER:
@@ -3004,9 +3004,9 @@ void register_console(struct console *newcon)
exclusive_console_stop_seq = console_seq;
/* Get a consistent copy of @syslog_seq. */
- raw_spin_lock_irqsave(&syslog_lock, flags);
+ spin_lock_irqsave(&syslog_lock, flags);
console_seq = syslog_seq;
- raw_spin_unlock_irqrestore(&syslog_lock, flags);
+ spin_unlock_irqrestore(&syslog_lock, flags);
}
console_unlock();
console_sysfs_notify();
--
2.43.0
|
