mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-07-22 01:08:13 -04:00
c37398010a
This is a subset of the Rust `zerocopy` crate, version v0.8.50 (released
2026-05-31), licensed under "BSD-2-Clause OR Apache-2.0 OR MIT", from:
https://github.com/google/zerocopy/tree/v0.8.50
The files are copied as-is, with no modifications whatsoever (not even
adding the SPDX identifiers).
The `benches` folder is added (i.e. not just `src` like in other cases)
since the files there are included in the rendered documentation,
as well as the `rustdoc` CSS style file that is needed to make those
visually more understandable.
For copyright details, please see:
https://github.com/google/zerocopy/blob/v0.8.50/README.md?plain=1
https://github.com/google/zerocopy/blob/v0.8.50/LICENSE-BSD
https://github.com/google/zerocopy/blob/v0.8.50/LICENSE-APACHE
https://github.com/google/zerocopy/blob/v0.8.50/LICENSE-MIT
The next two patches modify these files as needed for use within the
kernel. This patch split allows reviewers to double-check the import
and to clearly see the differences introduced.
The following script may be used to verify the contents:
for path in $(cd rust/zerocopy/ && find . -type f); do
curl --silent --show-error --location \
https://github.com/google/zerocopy/raw/v0.8.50/$path \
| diff --unified rust/zerocopy/$path - && echo $path: OK
done
Cc: Joshua Liebow-Feeser <joshlf@google.com>
Cc: Jack Wrenn <jswrenn@google.com>
Link: https://patch.msgid.link/20260608141439.182634-9-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
184 lines
10 KiB
Plaintext
184 lines
10 KiB
Plaintext
Iterations: 100
|
|
Instructions: 7200
|
|
Total Cycles: 7648
|
|
Total uOps: 9300
|
|
|
|
Dispatch Width: 4
|
|
uOps Per Cycle: 1.22
|
|
IPC: 0.94
|
|
Block RThroughput: 23.3
|
|
|
|
|
|
Instruction Info:
|
|
[1]: #uOps
|
|
[2]: Latency
|
|
[3]: RThroughput
|
|
[4]: MayLoad
|
|
[5]: MayStore
|
|
[6]: HasSideEffects (U)
|
|
|
|
[1] [2] [3] [4] [5] [6] Instructions:
|
|
2 5 1.00 * push rbp
|
|
2 5 1.00 * push r15
|
|
2 5 1.00 * push r14
|
|
2 5 1.00 * push r13
|
|
2 5 1.00 * push r12
|
|
2 5 1.00 * push rbx
|
|
1 1 0.33 sub rsp, 24
|
|
1 5 0.50 * mov r12, qword ptr [rdi + 16]
|
|
1 1 0.33 mov r13, r12
|
|
1 1 0.33 sub r13, rsi
|
|
1 1 1.00 jb .LBB6_10
|
|
1 1 0.33 mov rbx, rdi
|
|
1 5 0.50 * mov rax, qword ptr [rdi]
|
|
1 1 0.33 mov rcx, rax
|
|
1 1 0.33 sub rcx, r12
|
|
1 1 0.33 cmp rdx, rcx
|
|
1 1 1.00 jbe .LBB6_4
|
|
1 1 0.33 add r12, rdx
|
|
1 1 1.00 jae .LBB6_7
|
|
1 0 0.25 xor eax, eax
|
|
1 1 1.00 jmp .LBB6_6
|
|
1 5 0.50 * mov rax, qword ptr [rbx + 8]
|
|
1 1 0.33 add r12, rdx
|
|
1 1 0.50 lea rcx, [rsi + 2*rsi]
|
|
1 1 0.50 lea r14, [rax + 2*rcx]
|
|
1 1 0.33 add rdx, rdx
|
|
1 1 0.50 lea r15, [rdx + 2*rdx]
|
|
1 1 0.50 lea rdi, [r14 + r15]
|
|
1 1 0.33 add r13, r13
|
|
1 1 0.50 lea rdx, [2*r13]
|
|
1 1 0.33 add rdx, r13
|
|
1 1 0.33 mov rsi, r14
|
|
4 7 1.00 * call qword ptr [rip + memmove@GOTPCREL]
|
|
1 1 0.33 mov rdi, r14
|
|
1 0 0.25 xor esi, esi
|
|
1 1 0.33 mov rdx, r15
|
|
4 7 1.00 * call qword ptr [rip + memset@GOTPCREL]
|
|
1 1 1.00 * mov qword ptr [rbx + 16], r12
|
|
1 1 0.33 mov al, 1
|
|
1 1 0.33 add rsp, 24
|
|
1 6 0.50 * pop rbx
|
|
1 6 0.50 * pop r12
|
|
1 6 0.50 * pop r13
|
|
1 6 0.50 * pop r14
|
|
1 6 0.50 * pop r15
|
|
1 6 0.50 * pop rbp
|
|
1 1 1.00 U ret
|
|
1 1 0.33 mov r15, rsi
|
|
1 1 0.33 mov rbp, rdx
|
|
1 1 0.50 lea rcx, [rax + rax]
|
|
1 1 0.33 cmp r12, rcx
|
|
3 3 1.00 cmova rcx, r12
|
|
1 1 0.33 cmp rcx, 5
|
|
1 1 0.33 mov r14d, 4
|
|
2 2 0.67 cmovae r14, rcx
|
|
1 5 0.50 * mov rdx, qword ptr [rbx + 8]
|
|
1 1 0.33 mov rdi, rsp
|
|
1 1 0.33 mov rsi, rax
|
|
1 1 0.33 mov rcx, r14
|
|
3 5 1.00 call <alloc::raw_vec::RawVecInner>::finish_grow
|
|
2 6 0.50 * cmp dword ptr [rsp], 1
|
|
1 1 1.00 je .LBB6_3
|
|
1 5 0.50 * mov rax, qword ptr [rsp + 8]
|
|
1 1 1.00 * mov qword ptr [rbx + 8], rax
|
|
1 1 1.00 * mov qword ptr [rbx], r14
|
|
1 1 0.33 mov rdx, rbp
|
|
1 1 0.33 mov rsi, r15
|
|
1 1 1.00 jmp .LBB6_5
|
|
1 1 0.50 lea rdi, [rip + .Lanon.HASH.1]
|
|
1 1 0.50 lea rdx, [rip + .Lanon.HASH.3]
|
|
1 1 0.33 mov esi, 37
|
|
4 7 1.00 * call qword ptr [rip + core::panicking::panic@GOTPCREL]
|
|
|
|
|
|
Resources:
|
|
[0] - SBDivider
|
|
[1] - SBFPDivider
|
|
[2] - SBPort0
|
|
[3] - SBPort1
|
|
[4] - SBPort4
|
|
[5] - SBPort5
|
|
[6.0] - SBPort23
|
|
[6.1] - SBPort23
|
|
|
|
|
|
Resource pressure per iteration:
|
|
[0] [1] [2] [3] [4] [5] [6.0] [6.1]
|
|
- - 17.02 16.50 13.00 19.48 14.00 14.00
|
|
|
|
Resource pressure by instruction:
|
|
[0] [1] [2] [3] [4] [5] [6.0] [6.1] Instructions:
|
|
- - - - 1.00 - 0.98 0.02 push rbp
|
|
- - - - 1.00 - 0.02 0.98 push r15
|
|
- - - - 1.00 - 0.99 0.01 push r14
|
|
- - - - 1.00 - 0.01 0.99 push r13
|
|
- - - - 1.00 - 0.99 0.01 push r12
|
|
- - - - 1.00 - 0.01 0.99 push rbx
|
|
- - 0.49 0.51 - - - - sub rsp, 24
|
|
- - - - - - 0.04 0.96 mov r12, qword ptr [rdi + 16]
|
|
- - 0.49 0.50 - 0.01 - - mov r13, r12
|
|
- - 0.48 0.51 - 0.01 - - sub r13, rsi
|
|
- - - - - 1.00 - - jb .LBB6_10
|
|
- - 0.49 0.49 - 0.02 - - mov rbx, rdi
|
|
- - - - - - 0.97 0.03 mov rax, qword ptr [rdi]
|
|
- - 0.51 0.49 - - - - mov rcx, rax
|
|
- - 0.49 0.02 - 0.49 - - sub rcx, r12
|
|
- - 0.49 0.50 - 0.01 - - cmp rdx, rcx
|
|
- - - - - 1.00 - - jbe .LBB6_4
|
|
- - 0.02 0.49 - 0.49 - - add r12, rdx
|
|
- - - - - 1.00 - - jae .LBB6_7
|
|
- - - - - - - - xor eax, eax
|
|
- - - - - 1.00 - - jmp .LBB6_6
|
|
- - - - - - 0.97 0.03 mov rax, qword ptr [rbx + 8]
|
|
- - 0.51 0.49 - - - - add r12, rdx
|
|
- - 0.49 0.51 - - - - lea rcx, [rsi + 2*rsi]
|
|
- - 0.50 0.50 - - - - lea r14, [rax + 2*rcx]
|
|
- - 0.51 0.49 - - - - add rdx, rdx
|
|
- - 0.50 0.50 - - - - lea r15, [rdx + 2*rdx]
|
|
- - 0.49 0.51 - - - - lea rdi, [r14 + r15]
|
|
- - 0.50 0.49 - 0.01 - - add r13, r13
|
|
- - 0.51 0.49 - - - - lea rdx, [2*r13]
|
|
- - 0.01 0.01 - 0.98 - - add rdx, r13
|
|
- - 0.01 - - 0.99 - - mov rsi, r14
|
|
- - - - 1.00 1.00 1.98 0.02 call qword ptr [rip + memmove@GOTPCREL]
|
|
- - 0.49 0.50 - 0.01 - - mov rdi, r14
|
|
- - - - - - - - xor esi, esi
|
|
- - 0.50 0.50 - - - - mov rdx, r15
|
|
- - - - 1.00 1.00 1.96 0.04 call qword ptr [rip + memset@GOTPCREL]
|
|
- - - - 1.00 - 0.01 0.99 mov qword ptr [rbx + 16], r12
|
|
- - 0.50 - - 0.50 - - mov al, 1
|
|
- - 0.51 0.49 - - - - add rsp, 24
|
|
- - - - - - 0.02 0.98 pop rbx
|
|
- - - - - - 0.03 0.97 pop r12
|
|
- - - - - - 0.03 0.97 pop r13
|
|
- - - - - - 0.97 0.03 pop r14
|
|
- - - - - - 0.03 0.97 pop r15
|
|
- - - - - - 0.01 0.99 pop rbp
|
|
- - - - - 1.00 - - ret
|
|
- - 0.49 0.51 - - - - mov r15, rsi
|
|
- - 0.51 0.49 - - - - mov rbp, rdx
|
|
- - 0.49 0.51 - - - - lea rcx, [rax + rax]
|
|
- - 0.49 0.50 - 0.01 - - cmp r12, rcx
|
|
- - 1.04 0.50 - 1.46 - - cmova rcx, r12
|
|
- - 0.49 0.49 - 0.02 - - cmp rcx, 5
|
|
- - 0.50 - - 0.50 - - mov r14d, 4
|
|
- - 0.50 0.51 - 0.99 - - cmovae r14, rcx
|
|
- - - - - - 0.97 0.03 mov rdx, qword ptr [rbx + 8]
|
|
- - - 0.51 - 0.49 - - mov rdi, rsp
|
|
- - 0.01 0.50 - 0.49 - - mov rsi, rax
|
|
- - 0.49 0.50 - 0.01 - - mov rcx, r14
|
|
- - - - 1.00 1.00 0.99 0.01 call <alloc::raw_vec::RawVecInner>::finish_grow
|
|
- - 0.51 0.49 - - 0.50 0.50 cmp dword ptr [rsp], 1
|
|
- - - - - 1.00 - - je .LBB6_3
|
|
- - - - - - 0.50 0.50 mov rax, qword ptr [rsp + 8]
|
|
- - - - 1.00 - 0.99 0.01 mov qword ptr [rbx + 8], rax
|
|
- - - - 1.00 - 0.01 0.99 mov qword ptr [rbx], r14
|
|
- - 0.49 0.50 - 0.01 - - mov rdx, rbp
|
|
- - 0.50 0.01 - 0.49 - - mov rsi, r15
|
|
- - - - - 1.00 - - jmp .LBB6_5
|
|
- - 0.01 0.99 - - - - lea rdi, [rip + .Lanon.HASH.1]
|
|
- - 0.99 0.01 - - - - lea rdx, [rip + .Lanon.HASH.3]
|
|
- - 0.02 0.49 - 0.49 - - mov esi, 37
|
|
- - - - 1.00 1.00 0.02 1.98 call qword ptr [rip + core::panicking::panic@GOTPCREL]
|