Date: Wed, 11 Dec 2024 17:47:50 GMT From: Andrew Turner <andrew@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 37bb465d27ee - main - buf_ring: Remove an unneeded barrier Message-ID: <202412111747.4BBHloZj049190@gitrepo.freebsd.org>
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The branch main has been updated by andrew: URL: https://cgit.FreeBSD.org/src/commit/?id=37bb465d27eefd2237e6e3af9592457fccf324e2 commit 37bb465d27eefd2237e6e3af9592457fccf324e2 Author: Andrew Turner <andrew@FreeBSD.org> AuthorDate: 2024-12-11 15:15:25 +0000 Commit: Andrew Turner <andrew@FreeBSD.org> CommitDate: 2024-12-11 17:02:24 +0000 buf_ring: Remove an unneeded barrier This was left over from before using atomic(9) consistently. It is unneeded as these loads are already ordered correctly. Reviewed by: alc, kib Sponsored by: Arm Ltd Differential Revision: https://reviews.freebsd.org/D48002 --- sys/sys/buf_ring.h | 1 - 1 file changed, 1 deletion(-) diff --git a/sys/sys/buf_ring.h b/sys/sys/buf_ring.h index ab7e683ed0e9..00870cbf3531 100644 --- a/sys/sys/buf_ring.h +++ b/sys/sys/buf_ring.h @@ -107,7 +107,6 @@ buf_ring_enqueue(struct buf_ring *br, void *buf) cons_tail = atomic_load_acq_32(&br->br_cons_tail); if ((int32_t)(cons_tail + br->br_prod_size - prod_next) < 1) { - rmb(); if (prod_head == atomic_load_32(&br->br_prod_head) && cons_tail == atomic_load_32(&br->br_cons_tail)) { br->br_drops++;
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