Date: Wed, 29 Apr 2026 21:43:03 +0000 From: Jean-=?utf-8?Q?S=C3=A9bast?==?utf-8?Q?ien P=C3=A9?=dron <dumbbell@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 477761c7ada3 - stable/15 - linuxkpi: Add `atomic_read_acquire()` Message-ID: <69f27b67.18e86.19a1c92a@gitrepo.freebsd.org>
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The branch stable/15 has been updated by dumbbell: URL: https://cgit.FreeBSD.org/src/commit/?id=477761c7ada3d31d5571abf4922c0c6023866fc5 commit 477761c7ada3d31d5571abf4922c0c6023866fc5 Author: Jean-Sébastien Pédron <dumbbell@FreeBSD.org> AuthorDate: 2026-04-20 23:34:39 +0000 Commit: Jean-Sébastien Pédron <dumbbell@FreeBSD.org> CommitDate: 2026-04-29 21:03:59 +0000 linuxkpi: Add `atomic_read_acquire()` This function calls `raw_atomic_read_acquire()` which is also added. They are located in <linux/atomic/*.h> headers, both included from <linux/atomic.h>. The amdgpu DRM driver started to use this in Linux 6.12.x. Reviewed by: bz Sponsored by: The FreeBSD Foundation (cherry picked from commit ade8a27ea4c28d12fabc2d5f8e44386a3add23d1) --- sys/compat/linuxkpi/common/include/linux/atomic.h | 2 ++ .../common/include/linux/atomic/atomic-arch-fallback.h | 16 ++++++++++++++++ .../common/include/linux/atomic/atomic-instrumented.h | 16 ++++++++++++++++ 3 files changed, 34 insertions(+) diff --git a/sys/compat/linuxkpi/common/include/linux/atomic.h b/sys/compat/linuxkpi/common/include/linux/atomic.h index bc76928a7d67..9ba2c4d86076 100644 --- a/sys/compat/linuxkpi/common/include/linux/atomic.h +++ b/sys/compat/linuxkpi/common/include/linux/atomic.h @@ -29,7 +29,9 @@ #include <asm/atomic.h> #include <asm/atomic64.h> +#include <linux/atomic/atomic-arch-fallback.h> #include <asm/atomic-long.h> +#include <linux/atomic/atomic-instrumented.h> #include <asm/barrier.h> #endif /* _LINUXKPI_LINUX_ATOMIC_H_ */ diff --git a/sys/compat/linuxkpi/common/include/linux/atomic/atomic-arch-fallback.h b/sys/compat/linuxkpi/common/include/linux/atomic/atomic-arch-fallback.h new file mode 100644 index 000000000000..2980c364cb88 --- /dev/null +++ b/sys/compat/linuxkpi/common/include/linux/atomic/atomic-arch-fallback.h @@ -0,0 +1,16 @@ +/* + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2026 The FreeBSD Foundation + */ + +#ifndef _LINUXKPI_LINUX_ATOMIC_ATOMIC_ARCH_FALLBACK_H_ +#define _LINUXKPI_LINUX_ATOMIC_ATOMIC_ARCH_FALLBACK_H_ + +static inline int +raw_atomic_read_acquire(const atomic_t *v) +{ + return (atomic_load_acq_int(&v->counter)); +} + +#endif /* _LINUXKPI_LINUX_ATOMIC_ATOMIC_ARCH_FALLBACK_H_ */ diff --git a/sys/compat/linuxkpi/common/include/linux/atomic/atomic-instrumented.h b/sys/compat/linuxkpi/common/include/linux/atomic/atomic-instrumented.h new file mode 100644 index 000000000000..af0b6af2ecfa --- /dev/null +++ b/sys/compat/linuxkpi/common/include/linux/atomic/atomic-instrumented.h @@ -0,0 +1,16 @@ +/* + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2026 The FreeBSD Foundation + */ + +#ifndef _LINUXKPI_LINUX_ATOMIC_ATOMIC_INSTRUMENTED_H_ +#define _LINUXKPI_LINUX_ATOMIC_ATOMIC_INSTRUMENTED_H_ + +static inline int +atomic_read_acquire(const atomic_t *v) +{ + return (raw_atomic_read_acquire(v)); +} + +#endif /* _LINUXKPI_LINUX_ATOMIC_ATOMIC_INSTRUMENTED_H_ */home | help
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