diff options
| author | Eric Dumazet <edumazet@google.com> | 2025-11-14 14:06:46 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-11-27 14:24:30 -0800 |
| commit | 94984bfed58ca129f7e259ce09973ed0b3f540a8 (patch) | |
| tree | f9e04457b2cccc6eed60cad0627c977b4758a5d7 /rust/helpers | |
| parent | c2d2dad24503d7e2eb7cba354fcc73f95fa78d7a (diff) | |
| download | tip-94984bfed58ca129f7e259ce09973ed0b3f540a8.tar.gz | |
rbtree: inline rb_last()
This is a very small function, inlining it saves cpu cycles in TCP by
reducing register pressure and removing call/ret overhead.
It also reduces vmlinux text size by 122 bytes on a typical x86_64 build.
Before:
size vmlinux
text data bss dec hex filename
34811781 22177365 5685248 62674394 3bc55da vmlinux
After:
size vmlinux
text data bss dec hex filename
34811659 22177365 5685248 62674272 3bc5560 vmlinux
[ojeda@kernel.org: fix rust build]
Link: https://lkml.kernel.org/r/20251120085518.1463498-1-ojeda@kernel.org
Link: https://lkml.kernel.org/r/20251114140646.3817319-3-edumazet@google.com
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Cc: Jakub Kacinski <kuba@kernel.org>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Alice Ryhl <aliceryhl@google.com>
Cc: Stehen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'rust/helpers')
| -rw-r--r-- | rust/helpers/rbtree.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/rust/helpers/rbtree.c b/rust/helpers/rbtree.c index d0e452234632a2..2a0eabbb41603b 100644 --- a/rust/helpers/rbtree.c +++ b/rust/helpers/rbtree.c @@ -12,3 +12,8 @@ struct rb_node *rust_helper_rb_first(const struct rb_root *root) { return rb_first(root); } + +struct rb_node *rust_helper_rb_last(const struct rb_root *root) +{ + return rb_last(root); +} |