2024-03-06 06:49:38

by Thomas Weißschuh

[permalink] [raw]
Subject: [PATCH] watchdog/core: remove sysctl handlers from public header

The functions are only used in the file where they are defined.
Remove them from the header and make them static.

Also guard proc_soft_watchdog with a #define-guard as it is not used
otherwise.

Signed-off-by: Thomas Weißschuh <[email protected]>
---
include/linux/nmi.h | 7 -------
kernel/watchdog.c | 22 ++++++++++++----------
2 files changed, 12 insertions(+), 17 deletions(-)

diff --git a/include/linux/nmi.h b/include/linux/nmi.h
index e92e378df000..f53438eae815 100644
--- a/include/linux/nmi.h
+++ b/include/linux/nmi.h
@@ -216,13 +216,6 @@ void watchdog_update_hrtimer_threshold(u64 period);
static inline void watchdog_update_hrtimer_threshold(u64 period) { }
#endif

-struct ctl_table;
-int proc_watchdog(struct ctl_table *, int, void *, size_t *, loff_t *);
-int proc_nmi_watchdog(struct ctl_table *, int , void *, size_t *, loff_t *);
-int proc_soft_watchdog(struct ctl_table *, int , void *, size_t *, loff_t *);
-int proc_watchdog_thresh(struct ctl_table *, int , void *, size_t *, loff_t *);
-int proc_watchdog_cpumask(struct ctl_table *, int, void *, size_t *, loff_t *);
-
#ifdef CONFIG_HAVE_ACPI_APEI_NMI
#include <asm/nmi.h>
#endif
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 81a8862295d6..d7b2125503af 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -796,8 +796,8 @@ static int proc_watchdog_common(int which, struct ctl_table *table, int write,
/*
* /proc/sys/kernel/watchdog
*/
-int proc_watchdog(struct ctl_table *table, int write,
- void *buffer, size_t *lenp, loff_t *ppos)
+static int proc_watchdog(struct ctl_table *table, int write,
+ void *buffer, size_t *lenp, loff_t *ppos)
{
return proc_watchdog_common(WATCHDOG_HARDLOCKUP_ENABLED |
WATCHDOG_SOFTOCKUP_ENABLED,
@@ -807,8 +807,8 @@ int proc_watchdog(struct ctl_table *table, int write,
/*
* /proc/sys/kernel/nmi_watchdog
*/
-int proc_nmi_watchdog(struct ctl_table *table, int write,
- void *buffer, size_t *lenp, loff_t *ppos)
+static int proc_nmi_watchdog(struct ctl_table *table, int write,
+ void *buffer, size_t *lenp, loff_t *ppos)
{
if (!watchdog_hardlockup_available && write)
return -ENOTSUPP;
@@ -816,21 +816,23 @@ int proc_nmi_watchdog(struct ctl_table *table, int write,
table, write, buffer, lenp, ppos);
}

+#ifdef CONFIG_SOFTLOCKUP_DETECTOR
/*
* /proc/sys/kernel/soft_watchdog
*/
-int proc_soft_watchdog(struct ctl_table *table, int write,
- void *buffer, size_t *lenp, loff_t *ppos)
+static int proc_soft_watchdog(struct ctl_table *table, int write,
+ void *buffer, size_t *lenp, loff_t *ppos)
{
return proc_watchdog_common(WATCHDOG_SOFTOCKUP_ENABLED,
table, write, buffer, lenp, ppos);
}
+#endif

/*
* /proc/sys/kernel/watchdog_thresh
*/
-int proc_watchdog_thresh(struct ctl_table *table, int write,
- void *buffer, size_t *lenp, loff_t *ppos)
+static int proc_watchdog_thresh(struct ctl_table *table, int write,
+ void *buffer, size_t *lenp, loff_t *ppos)
{
int err, old;

@@ -852,8 +854,8 @@ int proc_watchdog_thresh(struct ctl_table *table, int write,
* user to specify a mask that will include cpus that have not yet
* been brought online, if desired.
*/
-int proc_watchdog_cpumask(struct ctl_table *table, int write,
- void *buffer, size_t *lenp, loff_t *ppos)
+static int proc_watchdog_cpumask(struct ctl_table *table, int write,
+ void *buffer, size_t *lenp, loff_t *ppos)
{
int err;


---
base-commit: 5847c9777c303a792202c609bd761dceb60f4eed
change-id: 20240306-const-sysctl-prep-watchdog-fc8cdd6424c9

Best regards,
--
Thomas Weißschuh <[email protected]>