Makes an embedded image a bit smaller
Signed-off-by: Joe Perches <[email protected]>
---
include/linux/kernel.h | 20 +++++++++++++++-----
kernel/printk.c | 2 ++
kernel/sysctl.c | 20 ++++++++++----------
3 files changed, 27 insertions(+), 15 deletions(-)
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 94bc996..db2d5e7 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -182,6 +182,13 @@ asmlinkage int printk(const char * fmt, ...)
extern int log_buf_get_len(void);
extern int log_buf_read(int idx);
extern int log_buf_copy(char *dest, int idx, int len);
+
+extern int printk_ratelimit_jiffies;
+extern int printk_ratelimit_burst;
+extern int printk_ratelimit(void);
+extern int __printk_ratelimit(int ratelimit_jiffies, int ratelimit_burst);
+extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
+ unsigned int interval_msec);
#else
static inline int vprintk(const char *s, va_list args)
__attribute__ ((format (printf, 1, 0)));
@@ -192,15 +199,18 @@ static inline int __cold printk(const char *s, ...) { return 0; }
static inline int log_buf_get_len(void) { return 0; }
static inline int log_buf_read(int idx) { return 0; }
static inline int log_buf_copy(char *dest, int idx, int len) { return 0; }
+
+static inline int printk_ratelimit(void) { return 0; }
+static inline int __printk_ratelimit(int ratelimit_jiffies, \
+ int ratelimit_burst) { return 0; }
+static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies, \
+ unsigned int interval_msec) \
+ { return false; }
+
#endif
unsigned long int_sqrt(unsigned long);
-extern int printk_ratelimit(void);
-extern int __printk_ratelimit(int ratelimit_jiffies, int ratelimit_burst);
-extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
- unsigned int interval_msec);
-
static inline void console_silent(void)
{
console_loglevel = 0;
diff --git a/kernel/printk.c b/kernel/printk.c
index a30fe33..2259540 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -1235,6 +1235,7 @@ void tty_write_message(struct tty_struct *tty, char *msg)
return;
}
+#if defined CONFIG_PRINTK
/*
* printk rate limiting, lifted from the networking subsystem.
*
@@ -1304,3 +1305,4 @@ bool printk_timed_ratelimit(unsigned long *caller_jiffies,
return false;
}
EXPORT_SYMBOL(printk_timed_ratelimit);
+#endif
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 8ac5171..f60b9e4 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -72,8 +72,6 @@ extern int suid_dumpable;
extern char core_pattern[];
extern int pid_max;
extern int min_free_kbytes;
-extern int printk_ratelimit_jiffies;
-extern int printk_ratelimit_burst;
extern int pid_max_min, pid_max_max;
extern int sysctl_drop_caches;
extern int percpu_pagelist_fraction;
@@ -462,14 +460,6 @@ static struct ctl_table kern_table[] = {
.mode = 0644,
.proc_handler = &proc_dointvec,
},
- {
- .ctl_name = KERN_PRINTK,
- .procname = "printk",
- .data = &console_loglevel,
- .maxlen = 4*sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec,
- },
#ifdef CONFIG_KMOD
{
.ctl_name = KERN_MODPROBE,
@@ -616,6 +606,15 @@ static struct ctl_table kern_table[] = {
.mode = 0644,
.proc_handler = &proc_dointvec,
},
+#if defined CONFIG_PRINTK
+ {
+ .ctl_name = KERN_PRINTK,
+ .procname = "printk",
+ .data = &console_loglevel,
+ .maxlen = 4*sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
{
.ctl_name = KERN_PRINTK_RATELIMIT,
.procname = "printk_ratelimit",
@@ -633,6 +632,7 @@ static struct ctl_table kern_table[] = {
.mode = 0644,
.proc_handler = &proc_dointvec,
},
+#endif
{
.ctl_name = KERN_NGROUPS_MAX,
.procname = "ngroups_max",
--
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