From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f74.google.com (mail-wm1-f74.google.com [209.85.128.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6E3173054EA for ; Tue, 28 Oct 2025 10:55:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761648928; cv=none; b=jZa8rbJQ+3W8LCK0CMMZUqsCJIA80io4/stzt7U1LCqjJVpI0IjqB243osYc0Twz63TU9ut6WONVUX5//IBGarjiZeC3l5EoB9utew/LYeFpFAOAyJ+o+Jcb2SrCVMPGyGaRvuudpJypqBN0DgT/0Pu1IGxWcNwxjp1FXgL9oY8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761648928; c=relaxed/simple; bh=UE6ywXPRJUbBb9cAsX9Hq9tzePOnoCU35bVTMfeOOMM=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=Zj2sMgNGhVFWKZK83Aw8AQ+NYTGHGoAdNp8MwZI2nks2U9o/1cfiON458Bz9Tl1hKIugjzNrmGSiSG8JPHN2TF79/rEzJoTTAVzf0FhrLfCAjRkS5a1UnBpsKajeihhLsTjLYw9SyBVH1elAxrzPb/rmN5hQLKUbE9r+aSUVU5k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--aliceryhl.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=lstSjdWz; arc=none smtp.client-ip=209.85.128.74 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--aliceryhl.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="lstSjdWz" Received: by mail-wm1-f74.google.com with SMTP id 5b1f17b1804b1-4770c37331fso14709045e9.3 for ; Tue, 28 Oct 2025 03:55:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1761648925; x=1762253725; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=l0c6uBRSvj90qkJBe+2p1+Rf+B5WpDvsjaWD6176zos=; b=lstSjdWzjWj/HXRPOfILujShNm02vidO75hTI0TL6MEES1xnJAIa7MPmHQ3/2mvO8J 9QEehavIc9u70sVgjvPoNv9csvg+0p8/2OzIjbGZR5a3G4Zxh4tN3wEMAII7Kk7I0Ywl A9b7NcDJyMahUYJ8qS6orIBCO3CNg0JIsQlQTilbMrcMl3G3iJ+N5Y+ydrAJMjzTeqbY l83WMwDOBARMx6WSYuLyedJm3QtBQ1UI1wFYvUYXmeGOgNwLv090xiZbS4a7ddDKDzfC msJRgMbV+OzX6rRqSM03i380MIaAruqGKeQkSV8sm6ErXExApTFfH616fFgg+jnocJ28 AgEQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1761648925; x=1762253725; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=l0c6uBRSvj90qkJBe+2p1+Rf+B5WpDvsjaWD6176zos=; b=X9FIachb/bM/M6ddQ17aamLLjcx7SQbeD4pK8hrxWKHfnofSdF4CJJOPVdYqQAx2xY uN00U+4rRGO90JXI6CuN08wkUsI+0RBXZLxbXht5K5bE4GeJ7A3dFiBBFTgCRiy7JT5U qT+wRxLG+/eESR6zsAxFyahbfrAEMJwNScF0dyVSJ8/yep8CFh5s8H3eAYKPMbdO++YE ESFOrOyvJBT/Fm+/VBd4kKUovZWig2lh7krWVEru78UuV4OUlEug+zxSL32LRHw6bFXJ ZZ1pNSx/ib1A+rBjS6ZZXwmsbQFiouT8/NnNwdK3ItaMITi1YyGIxvSI96+1lm6KPn84 SxmQ== X-Forwarded-Encrypted: i=1; AJvYcCWNQ4QsrEYmb7YZ6MioCsMyw6PnUleceo+/C0PN/CzwFfsHGMfFLC3HkWF7dxEVp6P8FgLK+acxT9fnzkk=@vger.kernel.org X-Gm-Message-State: AOJu0YyU7WHMaWeu2cAd+NnoEcy75TdkvUgwbJyxDYQrU4s122Hw1tRj h/IJoOzAJY6QWwhGniXGkTUfJumoPqPuYTvbTr0FUm9KgkHVV9Fe6ELV78Xz2W9+hknW8fC7Mku uxsfYnsriBgTrgqvlNQ== X-Google-Smtp-Source: AGHT+IFzmh1BhBeJBjuO029iK4qw9Ix8hlxGx7v2jqCs8ObbbTFbar6Lj/km5aPi04Jxsj1XyWO3V0iw5i78R5M= X-Received: from wmbeq14.prod.google.com ([2002:a05:600c:848e:b0:477:15b8:8ef1]) (user=aliceryhl job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:a013:b0:475:dcbb:7903 with SMTP id 5b1f17b1804b1-47717dfd41fmr25732385e9.9.1761648924955; Tue, 28 Oct 2025 03:55:24 -0700 (PDT) Date: Tue, 28 Oct 2025 10:55:13 +0000 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-B4-Tracking: v=1; b=H4sIABGhAGkC/12MywqDMBBFf0WybkpmirF25X+ULvIYNVCNJBJax H9vlC5aV5dz4ZyFRQqOIrsVCwuUXHR+zHA5Fcz0auyIO5uZocAShKi4dqOlkGce1MRLpYStpWw 1tCw7U6DWvfbe/ZG5d3H24b3nE2zvt4TiUErABb9WtSZTG2sNNJ333ZPOxg9sSyX81eGoY9ZJl mihQiNR/+nrun4ATDIn9+oAAAA= X-Change-Id: 20251007-binder-bitmap-5aa0d966fb1f X-Developer-Key: i=aliceryhl@google.com; a=openpgp; fpr=49F6C1FAA74960F43A5B86A1EE7A392FDE96209F X-Developer-Signature: v=1; a=openpgp-sha256; l=1293; i=aliceryhl@google.com; h=from:subject:message-id; bh=UE6ywXPRJUbBb9cAsX9Hq9tzePOnoCU35bVTMfeOOMM=; b=owEBbQKS/ZANAwAKAQRYvu5YxjlGAcsmYgBpAKEWT6pQMlXT7Pn1PIG6vgJTTJY+ROhWS9Q/J Oti+0jIpqKJAjMEAAEKAB0WIQSDkqKUTWQHCvFIvbIEWL7uWMY5RgUCaQChFgAKCRAEWL7uWMY5 RlmWD/wMZGxAE60Prw2gR0J7Slr1yBQGjdOaXVoqHfPaZ4/HDFGkFLIvwY/JvBdGge8xQzYQ4oL 7kFYHBTR2biHfPzwmwFWpd8T98Tyj5u4Al9zKa1vRIympmoK+lQ9vEEDPqSAFkikhUek7pNJcEL JS9cyr9WoAHgSd0Zy8cFgnEb9zMFKM1Om9sR0cjgMlVFyrp+rROdEi+OFSR6grc+7+SnqKibMtz GmeT8G5lJBMz9Jx/oPT89ZDnmMZ++dIDFMuHIBobW7vPajJ3v1YDDg3kCLWFiqHGFeoKxbkmH9g eEBQzt/UOQqxFkwER8094RHv/BFYQDDfVghJrNMXq0syzoMAXn+Dkd7u+OWSpWaXyXbhwF4+mpJ bLLFoF1aYb9MSrgZJjb3hS9sSw4ErSmijyEmZC9jy7u9NJz7ppmw8ZXtOuOtzsjHhdpA3clVYeI 4hBPSdTqRV2SWzeDH4s7lpg5N5/MujWOAmDGnP6FxBL3m/MpLiEq9IwkXmN9ZoqYpA/E8X1vuo9 WT4xE4zf04VTSjo6GxW3eL/8Ck6s/K2VdU4ml7HuXfinW6WdCMW5E6BENAgU71M5KSMP3HcVXNl bf80MzJn4wuNNjUAsaRcF0hNnQHX/WFfuiIV8Gsdiqhe5TiIKkoCmo+qiHIyirMrNBA2T+Dugbu JNopozjhQw7PSZA== X-Mailer: b4 0.14.2 Message-ID: <20251028-binder-bitmap-v3-0-32822d4b3207@google.com> Subject: [PATCH v3 0/5] Use Rust Bitmap from Rust Binder driver From: Alice Ryhl To: Greg Kroah-Hartman , Yury Norov Cc: "=?utf-8?q?Arve_Hj=C3=B8nnev=C3=A5g?=" , Todd Kjos , Martijn Coenen , Joel Fernandes , Christian Brauner , Carlos Llamas , Suren Baghdasaryan , Burak Emir , Miguel Ojeda , Boqun Feng , Gary Guo , "=?utf-8?q?Bj=C3=B6rn_Roy_Baron?=" , Benno Lossin , Andreas Hindborg , Trevor Gross , Danilo Krummrich , rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, Alice Ryhl Content-Type: text/plain; charset="utf-8" See commit message for rust binder commit for details. Signed-off-by: Alice Ryhl --- Changes in v3: - Also update documentation to fix compile errors. - Use new_inline() instead of new_small(). - Reword commit message of "rust: id_pool: do not supply starting capacity" - Change UnusedId::acquire() to return usize. - Link to v2: https://lore.kernel.org/r/20251021-binder-bitmap-v2-0-e652d172c62b@google.com Changes in v2: - Use id_pool. - Link to v1: https://lore.kernel.org/r/20251020-binder-bitmap-v1-0-879bec9cddc1@google.com --- Alice Ryhl (5): rust: bitmap: add MAX_LEN and NO_ALLOC_MAX_LEN constants rust: bitmap: add BitmapVec::new_inline() rust: id_pool: do not supply starting capacity rust: id_pool: do not immediately acquire new ids rust_binder: use bitmap for allocation of handles drivers/android/binder/process.rs | 63 ++++++++++++++++------ rust/kernel/bitmap.rs | 26 +++++++-- rust/kernel/id_pool.rs | 109 +++++++++++++++++++++++--------------- 3 files changed, 134 insertions(+), 64 deletions(-) --- base-commit: 211ddde0823f1442e4ad052a2f30f050145ccada change-id: 20251007-binder-bitmap-5aa0d966fb1f Best regards, -- Alice Ryhl