From nobody Tue Dec 16 19:40:39 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 291861FCCFD; Thu, 20 Feb 2025 16:14:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740068045; cv=none; b=Pg+FI739a6yCHw7Ik/SEFjX0/sSZ4Z4VuGWj9U/Ev2boIf7+rS4vAqubS/CBkS9MXldLbsnCni9go4xhCGLV+iLZHF3a4JFPb/KT/l4WtcDNOeJVZ6c4mC4A/W0UTHEoqFY8cJae/Q65ZwiGBbuw313hFXE6FQajjrQkNFWtXHs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740068045; c=relaxed/simple; bh=01pGRoOVLm7FmVgPZ/DAaMBZsWrBo+heyMml9ojdBqE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=I3teGjrtouVkBDEKKJMAPe4xdLG4BReN7AX9ytofBbDfkC8yMu5jYIFdwJpi1Z9ybhDn3o5PWB9vuWI1zLXsEcHWlBisEI9F7sjvpwb0LS07klwo6geFUxOplvJhl4ctxu3K2oMPVbKvFVbeguCORmM97t8ncdU2prAHuhzp00c= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=IntIdG5T; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="IntIdG5T" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E25A1C4CED1; Thu, 20 Feb 2025 16:14:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1740068045; bh=01pGRoOVLm7FmVgPZ/DAaMBZsWrBo+heyMml9ojdBqE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IntIdG5TdZt9kIcE7uowpyd2fPl52hC1g4IeHUPC5ZQs7EIRUl+jdPeCLlM9cHrAW uh5rqBx+TIn0zTEAypeQk1ewg+2w//4/gqtihPpNmfQmwYfsqlHczMRwwRb5O7Idv/ DV8xmW3bx2jQ2dJ5CpRNcDtoQfUK3rgrvH2Wn0WkwDxgGnJAXmw44sFOTBio7OBbiT MUHgqCGlTRAo6QnHLHUfGE8d1rF8aHZxv0jt/lLmlLBl9LOIcZHcFVSOKaLRWvIzht bxX+EktSzAaftCkMtZ1fonMbpBPLrYFLOdNLVm+qheSJzjVIPJ1BZPWagv4nXVYWn8 wyKaQDFEIcmKA== Received: by paulmck-ThinkPad-P17-Gen-1.home (Postfix, from userid 1000) id 9A69DCE0B34; Thu, 20 Feb 2025 08:14:04 -0800 (PST) From: "Paul E. McKenney" To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, lkmm@lists.linux.dev, kernel-team@meta.com, mingo@kernel.org Cc: stern@rowland.harvard.edu, parri.andrea@gmail.com, will@kernel.org, peterz@infradead.org, boqun.feng@gmail.com, npiggin@gmail.com, dhowells@redhat.com, j.alglave@ucl.ac.uk, luc.maranget@inria.fr, akiyks@gmail.com, Puranjay Mohan , "Paul E . McKenney" , Daniel Lustig , Joel Fernandes Subject: [PATCH memory-model 1/7] tools/memory-model: Add atomic_and()/or()/xor() and add_negative Date: Thu, 20 Feb 2025 08:13:57 -0800 Message-Id: <20250220161403.800831-1-paulmck@kernel.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <8cfb51e3-9726-4285-b8ca-0d0abcacb07e@paulmck-laptop> References: <8cfb51e3-9726-4285-b8ca-0d0abcacb07e@paulmck-laptop> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Puranjay Mohan Pull-849[1] added the support of '&', '|', and '^' to the herd7 tool's atomics operations. Use these in linux-kernel.def to implement atomic_and()/or()/xor() with all their ordering variants. atomic_add_negative() is already available so add its acquire, release, and relaxed ordering variants. [1] https://github.com/herd/herdtools7/pull/849 Signed-off-by: Puranjay Mohan Acked-by: Andrea Parri Reviewed-by: Boqun Feng Signed-off-by: Paul E. McKenney Cc: Alan Stern Cc: Will Deacon Cc: Peter Zijlstra Cc: Nicholas Piggin Cc: David Howells Cc: Jade Alglave Cc: Luc Maranget Cc: Akira Yokosawa Cc: Daniel Lustig Cc: Joel Fernandes Cc: --- tools/memory-model/linux-kernel.def | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/tools/memory-model/linux-kernel.def b/tools/memory-model/linux= -kernel.def index 88a39601f5256..d1f11930ec512 100644 --- a/tools/memory-model/linux-kernel.def +++ b/tools/memory-model/linux-kernel.def @@ -65,6 +65,9 @@ atomic_set_release(X,V) { smp_store_release(X,V); } =20 atomic_add(V,X) { __atomic_op(X,+,V); } atomic_sub(V,X) { __atomic_op(X,-,V); } +atomic_and(V,X) { __atomic_op(X,&,V); } +atomic_or(V,X) { __atomic_op(X,|,V); } +atomic_xor(V,X) { __atomic_op(X,^,V); } atomic_inc(X) { __atomic_op(X,+,1); } atomic_dec(X) { __atomic_op(X,-,1); } =20 @@ -77,6 +80,21 @@ atomic_fetch_add_relaxed(V,X) __atomic_fetch_op{once}(X,= +,V) atomic_fetch_add_acquire(V,X) __atomic_fetch_op{acquire}(X,+,V) atomic_fetch_add_release(V,X) __atomic_fetch_op{release}(X,+,V) =20 +atomic_fetch_and(V,X) __atomic_fetch_op{mb}(X,&,V) +atomic_fetch_and_relaxed(V,X) __atomic_fetch_op{once}(X,&,V) +atomic_fetch_and_acquire(V,X) __atomic_fetch_op{acquire}(X,&,V) +atomic_fetch_and_release(V,X) __atomic_fetch_op{release}(X,&,V) + +atomic_fetch_or(V,X) __atomic_fetch_op{mb}(X,|,V) +atomic_fetch_or_relaxed(V,X) __atomic_fetch_op{once}(X,|,V) +atomic_fetch_or_acquire(V,X) __atomic_fetch_op{acquire}(X,|,V) +atomic_fetch_or_release(V,X) __atomic_fetch_op{release}(X,|,V) + +atomic_fetch_xor(V,X) __atomic_fetch_op{mb}(X,^,V) +atomic_fetch_xor_relaxed(V,X) __atomic_fetch_op{once}(X,^,V) +atomic_fetch_xor_acquire(V,X) __atomic_fetch_op{acquire}(X,^,V) +atomic_fetch_xor_release(V,X) __atomic_fetch_op{release}(X,^,V) + atomic_inc_return(X) __atomic_op_return{mb}(X,+,1) atomic_inc_return_relaxed(X) __atomic_op_return{once}(X,+,1) atomic_inc_return_acquire(X) __atomic_op_return{acquire}(X,+,1) @@ -117,3 +135,6 @@ atomic_sub_and_test(V,X) __atomic_op_return{mb}(X,-,V) = =3D=3D 0 atomic_dec_and_test(X) __atomic_op_return{mb}(X,-,1) =3D=3D 0 atomic_inc_and_test(X) __atomic_op_return{mb}(X,+,1) =3D=3D 0 atomic_add_negative(V,X) __atomic_op_return{mb}(X,+,V) < 0 +atomic_add_negative_relaxed(V,X) __atomic_op_return{once}(X,+,V) < 0 +atomic_add_negative_acquire(V,X) __atomic_op_return{acquire}(X,+,V) < 0 +atomic_add_negative_release(V,X) __atomic_op_return{release}(X,+,V) < 0 --=20 2.40.1