Commit Graph

3 Commits

Author SHA1 Message Date
Joel Granados b8cbc0855a sysctl: Remove register_sysctl_table
This is part of the general push to deprecate register_sysctl_paths and
register_sysctl_table. After removing all the calling functions, we
remove both the register_sysctl_table function and the documentation
check that appeared in check-sysctl-docs awk script.

We save 595 bytes with this change:

./scripts/bloat-o-meter vmlinux.1.refactor-base-paths vmlinux.2.remove-sysctl-table
add/remove: 2/8 grow/shrink: 1/0 up/down: 1154/-1749 (-595)
Function                                     old     new   delta
count_subheaders                               -     983    +983
unregister_sysctl_table                       29     184    +155
__pfx_count_subheaders                         -      16     +16
__pfx_unregister_sysctl_table.part            16       -     -16
__pfx_register_leaf_sysctl_tables.constprop   16       -     -16
__pfx_count_subheaders.part                   16       -     -16
__pfx___register_sysctl_base                  16       -     -16
unregister_sysctl_table.part                 136       -    -136
__register_sysctl_base                       478       -    -478
register_leaf_sysctl_tables.constprop        524       -    -524
count_subheaders.part                        547       -    -547
Total: Before=21257652, After=21257057, chg -0.00%

[mcgrof: remove register_leaf_sysctl_tables and append_path too and
 add bloat-o-meter stats]

Signed-off-by: Joel Granados <j.granados@samsung.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Acked-by: Christian Brauner <brauner@kernel.org>
2023-05-23 21:43:26 -07:00
Luis Chamberlain 0199849acd 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>
2023-05-02 19:24:16 -07:00
Stephen Kitt 021622df55 docs: add a script to check sysctl docs
This script allows sysctl documentation to be checked against the
kernel source code, to identify missing or obsolete entries. Running
it against 5.5 shows for example that sysctl/kernel.rst has two
obsolete entries and is missing 52 entries.

Signed-off-by: Stephen Kitt <steve@sk2.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-02-25 03:35:16 -07:00