tunables: use Linux ullong param ops for u64

Since 3.17 Linux has provided param ops for 64-bit ints, so we don't
need to use our own anymore.

Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: Alexander Motin <[email protected]>
Reviewed-by: Pavel Snajdr <[email protected]>
Signed-off-by: Rob Norris <[email protected]>
Closes openzfs#17377

Author: robn

include/os/linux/kernel/linux/mod_compat.h

@@ -107,16 +107,16 @@ enum scope_prefix_types {
 #define	spl_param_ops_ulong param_ops_ulong
 #define	spl_param_ops_ULONG param_ops_ulong
 
+#define	spl_param_set_u64 param_set_ullong
+#define	spl_param_get_u64 param_get_ullong
+#define	spl_param_ops_u64 param_ops_ullong
+#define	spl_param_ops_U64 param_ops_ullong
+
 #define	spl_param_set_charp param_set_charp
 #define	spl_param_get_charp param_get_charp
 #define	spl_param_ops_charp param_ops_charp
 #define	spl_param_ops_STRING param_ops_charp
 
-extern int spl_param_set_u64(const char *val, zfs_kernel_param_t *kp);
-extern int spl_param_get_u64(char *buffer, zfs_kernel_param_t *kp);
-extern const struct kernel_param_ops spl_param_ops_u64;
-#define	spl_param_ops_U64 spl_param_ops_u64
-
 /*
  * Declare a module parameter / sysctl node
  *

module/os/linux/spl/spl-generic.c

@@ -555,28 +555,6 @@ ddi_copyin(const void *from, void *to, size_t len, int flags)
 }
 EXPORT_SYMBOL(ddi_copyin);
 
-#define	define_spl_param(type, fmt)					\
-int									\
-spl_param_get_##type(char *buf, zfs_kernel_param_t *kp)			\
-{									\
-	return (scnprintf(buf, PAGE_SIZE, fmt "\n",			\
-	    *(type *)kp->arg));						\
-}									\
-int									\
-spl_param_set_##type(const char *buf, zfs_kernel_param_t *kp)		\
-{									\
-	return (kstrto##type(buf, 0, (type *)kp->arg));			\
-}									\
-const struct kernel_param_ops spl_param_ops_##type = {			\
-	.set = spl_param_set_##type,					\
-	.get = spl_param_get_##type,					\
-};									\
-EXPORT_SYMBOL(spl_param_get_##type);					\
-EXPORT_SYMBOL(spl_param_set_##type);					\
-EXPORT_SYMBOL(spl_param_ops_##type);
-
-define_spl_param(u64, "%llu")
-
 /*
  * Post a uevent to userspace whenever a new vdev adds to the pool. It is
  * necessary to sync blkid information with udev, which zed daemon uses