The patch titled
Subject: printk: fix build warning when CONFIG_PRINTK=n
has been removed from the -mm tree. Its filename was
printk-fix-build-warning-when-config_printk=n.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Xiaoming Ni <nixiaoming@xxxxxxxxxx>
Subject: printk: fix build warning when CONFIG_PRINTK=n
build warning when CONFIG_PRINTK=n
kernel/printk/printk.c:175:5: warning: no previous prototype for
'devkmsg_sysctl_set_loglvl' [-Wmissing-prototypes]
devkmsg_sysctl_set_loglvl() is only used in sysctl.c when CONFIG_PRINTK=y,
but it participates in the build when CONFIG_PRINTK=n. So add compile
dependency CONFIG_PRINTK=y && CONFIG_SYSCTL=y to fix the build warning.
Link: https://lkml.kernel.org/r/20211129211943.640266-5-mcgrof@xxxxxxxxxx
Signed-off-by: Xiaoming Ni <nixiaoming@xxxxxxxxxx>
Signed-off-by: Luis Chamberlain <mcgrof@xxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@xxxxxxxxx>
Cc: Antti Palosaari <crope@xxxxxx>
Cc: Christian Brauner <christian.brauner@xxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Eric Biederman <ebiederm@xxxxxxxxxxxx>
Cc: Eric Biggers <ebiggers@xxxxxxxxxx>
Cc: Iurii Zaikin <yzaikin@xxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Lukas Middendorf <kernel@xxxxxxxxxxx>
Cc: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Cc: "Naveen N. Rao" <naveen.n.rao@xxxxxxxxxxxxx>
Cc: Stephen Kitt <steve@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/printk.h | 4 ----
kernel/printk/internal.h | 2 ++
kernel/printk/printk.c | 3 ++-
3 files changed, 4 insertions(+), 5 deletions(-)
--- a/include/linux/printk.h~printk-fix-build-warning-when-config_printk=n
+++ a/include/linux/printk.h
@@ -183,10 +183,6 @@ extern bool printk_timed_ratelimit(unsig
extern int printk_delay_msec;
extern int dmesg_restrict;
-extern int
-devkmsg_sysctl_set_loglvl(struct ctl_table *table, int write, void *buf,
- size_t *lenp, loff_t *ppos);
-
extern void wake_up_klogd(void);
char *log_buf_addr_get(void);
--- a/kernel/printk/internal.h~printk-fix-build-warning-when-config_printk=n
+++ a/kernel/printk/internal.h
@@ -6,6 +6,8 @@
#if defined(CONFIG_PRINTK) && defined(CONFIG_SYSCTL)
void __init printk_sysctl_init(void);
+int devkmsg_sysctl_set_loglvl(struct ctl_table *table, int write,
+ void *buffer, size_t *lenp, loff_t *ppos);
#else
#define printk_sysctl_init() do { } while (0)
#endif
--- a/kernel/printk/printk.c~printk-fix-build-warning-when-config_printk=n
+++ a/kernel/printk/printk.c
@@ -171,7 +171,7 @@ static int __init control_devkmsg(char *
__setup("printk.devkmsg=", control_devkmsg);
char devkmsg_log_str[DEVKMSG_STR_MAX_SIZE] = "ratelimit";
-
+#if defined(CONFIG_PRINTK) && defined(CONFIG_SYSCTL)
int devkmsg_sysctl_set_loglvl(struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
@@ -210,6 +210,7 @@ int devkmsg_sysctl_set_loglvl(struct ctl
return 0;
}
+#endif /* CONFIG_PRINTK && CONFIG_SYSCTL */
/* Number of registered extended console drivers. */
static int nr_ext_console_drivers;
_
Patches currently in -mm which might be from nixiaoming@xxxxxxxxxx are
