sysctl: remove register_sysctl_paths()

The deprecation for register_sysctl_paths() is over. We can rejoice as
we nuke register_sysctl_paths(). The routine register_sysctl_table()
was the only user left of register_sysctl_paths(), so we can now just
open code and move the implementation over to what used to be
to __register_sysctl_paths().

The old dynamic struct ctl_table_set *set is now the point to
sysctl_table_root.default_set.

The old dynamic const struct ctl_path *path was being used in the
routine register_sysctl_paths() with a static:

static const struct ctl_path null_path[] = { {} };

Since this is a null path we can now just simplfy the old routine
and remove its use as its always empty.

This saves us a total of 230 bytes.

$ ./scripts/bloat-o-meter vmlinux.old vmlinux
add/remove: 2/7 grow/shrink: 1/1 up/down: 1015/-1245 (-230)
Function                                     old     new   delta
register_leaf_sysctl_tables.constprop          -     524    +524
register_sysctl_table                         22     497    +475
__pfx_register_leaf_sysctl_tables.constprop       -      16     +16
null_path                                      8       -      -8
__pfx_register_sysctl_paths                   16       -     -16
__pfx_register_leaf_sysctl_tables             16       -     -16
__pfx___register_sysctl_paths                 16       -     -16
__register_sysctl_base                        29      12     -17
register_sysctl_paths                         18       -     -18
register_leaf_sysctl_tables                  534       -    -534
__register_sysctl_paths                      620       -    -620
Total: Before=21259666, After=21259436, chg -0.00%

Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>

1 files changed, 0 insertions, 16 deletions

diff --git a/scripts/check-sysctl-docs b/scripts/check-sysctl-docs
index 8bcb9e26c7bc..edc9a629d79e 100755
--- a/scripts/check-sysctl-docs
+++ b/scripts/check-sysctl-docs
@@ -156,22 +156,6 @@ curtable && /\.procname[\t ]*=[\t ]*".+"/ {
     }
 }
 
-/register_sysctl_paths\(.*\)/ {
-    match($0, /register_sysctl_paths\(([^)]+), ([^)]+)\)/, tables)
-    if (debug) print "Attaching table " tables[2] " to path " tables[1]
-    if (paths[tables[1]] == table) {
-	for (entry in entries[tables[2]]) {
-	    printentry(entry)
-	}
-    }
-    split(paths[tables[1]], components, "/")
-    if (length(components) > 1 && components[1] == table) {
-	# Count the first subdirectory as seen
-	seen[components[2]]++
-    }
-}
-
-
 END {
     for (entry in documented) {
 	if (!seen[entry]) {