linux-kernel - Re: [PATCH v2 01/10] cyrpto/b128ops: Remove struct u128

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Date:   Thu, 02 Feb 2023 12:21:41 -0800
From:   "H. Peter Anvin" <hpa@...or.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        torvalds@...ux-foundation.org
CC:     corbet@....net, will@...nel.org, peterz@...radead.org,
        boqun.feng@...il.com, mark.rutland@....com,
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Subject: Re: [PATCH v2 01/10] cyrpto/b128ops: Remove struct u128

On February 2, 2023 6:50:31 AM PST, Peter Zijlstra <peterz@...radead.org> wrote:
>Per git-grep u128_xor() and its related struct u128 are unused except
>to implement {be,le}128_xor(). Remove them to free up the namespace.
>
>Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
>---
> include/crypto/b128ops.h |   14 +++-----------
> 1 file changed, 3 insertions(+), 11 deletions(-)
>
>--- a/include/crypto/b128ops.h
>+++ b/include/crypto/b128ops.h
>@@ -50,10 +50,6 @@
> #include <linux/types.h>
> 
> typedef struct {
>-	u64 a, b;
>-} u128;
>-
>-typedef struct {
> 	__be64 a, b;
> } be128;
> 
>@@ -61,20 +57,16 @@ typedef struct {
> 	__le64 b, a;
> } le128;
> 
>-static inline void u128_xor(u128 *r, const u128 *p, const u128 *q)
>+static inline void be128_xor(be128 *r, const be128 *p, const be128 *q)
> {
> 	r->a = p->a ^ q->a;
> 	r->b = p->b ^ q->b;
> }
> 
>-static inline void be128_xor(be128 *r, const be128 *p, const be128 *q)
>-{
>-	u128_xor((u128 *)r, (u128 *)p, (u128 *)q);
>-}
>-
> static inline void le128_xor(le128 *r, const le128 *p, const le128 *q)
> {
>-	u128_xor((u128 *)r, (u128 *)p, (u128 *)q);
>+	r->a = p->a ^ q->a;
>+	r->b = p->b ^ q->b;
> }
> 
> #endif /* _CRYPTO_B128OPS_H */
>
>

Can we centralize these ordered types, too?