Date: Wed, 28 Apr 2021 15:06:07 GMT From: Neel Chauhan <nc@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: efe7f12cd37b - main - linuxkpi: Implement rcu_replace_pointer() macro Message-ID: <202104281506.13SF679b004900@gitrepo.freebsd.org>
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The branch main has been updated by nc (ports committer): URL: https://cgit.FreeBSD.org/src/commit/?id=efe7f12cd37bf8f2538df387d565e7849112a598 commit efe7f12cd37bf8f2538df387d565e7849112a598 Author: Neel Chauhan <nc@FreeBSD.org> AuthorDate: 2021-04-28 15:04:52 +0000 Commit: Neel Chauhan <nc@FreeBSD.org> CommitDate: 2021-04-28 15:04:52 +0000 linuxkpi: Implement rcu_replace_pointer() macro This is needed for the drm-kmod 5.5 update. Reviewed by: hselasky (src) MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D30025 --- sys/compat/linuxkpi/common/include/linux/rcupdate.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/sys/compat/linuxkpi/common/include/linux/rcupdate.h b/sys/compat/linuxkpi/common/include/linux/rcupdate.h index a43736e0285f..ea97fecee53b 100644 --- a/sys/compat/linuxkpi/common/include/linux/rcupdate.h +++ b/sys/compat/linuxkpi/common/include/linux/rcupdate.h @@ -97,6 +97,13 @@ (uintptr_t)(v)); \ } while (0) +#define rcu_replace_pointer(rcu, ptr, c) \ +({ \ + typeof(ptr) __tmp = rcu_dereference_protected(rcu, c); \ + rcu_assign_pointer(rcu, ptr); \ + __tmp; \ +}) + #define rcu_swap_protected(rcu, ptr, c) do { \ typeof(ptr) p = rcu_dereference_protected(rcu, c); \ rcu_assign_pointer(rcu, ptr); \
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