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x86 atomic.h: remove obsoleted comment

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Modules no longer call kernel functions for atomic ops, and since the
previous commit, we always use lock prefix.

Submitted by:	Elliott Mitchell <ehem+freebsd@m5p.com>
Reviewed by:	jhb, markj
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D34153
This commit is contained in:
Konstantin Belousov 2022-02-03 19:46:22 +02:00
parent 9c0b759bf9
commit 9596b349bb
2 changed files with 0 additions and 16 deletions
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8
sys/amd64/include/atomic.h
View file

@ -102,14 +102,6 @@
* atomic_readandclear_long(P) (return (*(u_long *)(P)); *(u_long *)(P) = 0;)
*/
/*
* The above functions are expanded inline in the statically-linked
* kernel. Lock prefixes are generated if an SMP kernel is being
* built.
*
* Kernel modules call real functions which are built into the kernel.
* This allows kernel modules to be portable between UP and SMP systems.
*/
#if !defined(__GNUCLIKE_ASM)
#define ATOMIC_ASM(NAME, TYPE, OP, CONS, V) \
void atomic_##NAME##_##TYPE(volatile u_##TYPE *p, u_##TYPE v); \

8
sys/i386/include/atomic.h
View file

@ -96,14 +96,6 @@ __mbu(void)
* atomic_readandclear_long(P) (return (*(u_long *)(P)); *(u_long *)(P) = 0;)
*/
/*
* The above functions are expanded inline in the statically-linked
* kernel. Lock prefixes are generated if an SMP kernel is being
* built.
*
* Kernel modules call real functions which are built into the kernel.
* This allows kernel modules to be portable between UP and SMP systems.
*/
#if !defined(__GNUCLIKE_ASM)
#define ATOMIC_ASM(NAME, TYPE, OP, CONS, V) \
void atomic_##NAME##_##TYPE(volatile u_##TYPE *p, u_##TYPE v); \