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(2001-b400-e28b-f958-90c5-2a29-7d9f-5524.emome-ip6.hinet.net. [2001:b400:e28b:f958:90c5:2a29:7d9f:5524]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2a8bd74e9bbsm96831045ad.95.2026.02.01.05.03.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 01 Feb 2026 05:03:41 -0800 (PST) From: Nick Huang To: "Rafael J . Wysocki" , Robert Moore Cc: Len Brown , linux-acpi@vger.kernel.org, acpica-devel@lists.linux.dev, linux-kernel@vger.kernel.org, paladin@ntub.edu.tw, kusogame68@gmail.com, ceyanglab@gmail.com, n1136402@ntub.edu.tw, Nick Huang Subject: [PATCH 0/2] nsrepair2: Improve sorting performance and add tests Date: Sun, 1 Feb 2026 13:03:32 +0000 Message-ID: <20260201130334.3107-1-sef1548@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch series improves the ACPI nsrepair2 sorting implementation and adds comprehensive KUnit tests. Patch 1 replaces the O(n²) bubble sort algorithm in acpi_ns_sort_list() with the kernel's sort_r() function, which uses heapsort to achieve O(n log n) time complexity. This improves performance when sorting large ACPI package lists (e.g., _PSS, _TSS) while reducing code complexity by leveraging the existing kernel sort API. Patch 2 adds KUnit tests to verify the repair functions in nsrepair2.c, covering: - ACPI operand object creation (integer, string, buffer, package) - Namespace node creation and NAMESEG comparison - Package structures for _PSS, _CST, _ALR, _PRT methods - _HID string format verification - _FDE buffer expansion - Sorting logic with ascending/descending order Nick Huang (2): ACPI: nsrepair2: Replace O(n²) bubble sort with O(n log n) sort_r() ACPI: acpica: Add KUnit tests for nsrepair2 repair functions drivers/acpi/acpica/nsrepair2.c | 87 ++- drivers/acpi/acpica/nsrepair2_test.c | 854 +++++++++++++++++++++++++++ 2 files changed, 916 insertions(+), 25 deletions(-) create mode 100644 drivers/acpi/acpica/nsrepair2_test.c -- 2.43.0