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Wed, 14 May 2025 20:19:40 +0000 Message-ID: Date: Wed, 14 May 2025 13:19:38 -0700 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v11 02/30] find: add find_first_andnot_bit() To: Fenghua Yu , James Morse , , CC: Thomas Gleixner , Ingo Molnar , Borislav Petkov , H Peter Anvin , Babu Moger , , "D Scott Phillips OS" , , , , , , Jamie Iles , Xin Hao , , , , David Hildenbrand , Rex Nie , "Dave Martin" , Koba Ko , Shanker Donthineni , "Yury Norov [NVIDIA]" References: <20250513171547.15194-1-james.morse@arm.com> <20250513171547.15194-3-james.morse@arm.com> <4f8b88aa-524c-4416-9eaa-74ea68ff1ed6@nvidia.com> From: Reinette Chatre Content-Language: en-US In-Reply-To: <4f8b88aa-524c-4416-9eaa-74ea68ff1ed6@nvidia.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-ClientProxiedBy: BY5PR13CA0016.namprd13.prod.outlook.com (2603:10b6:a03:180::29) To SJ2PR11MB7573.namprd11.prod.outlook.com (2603:10b6:a03:4d2::10) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ2PR11MB7573:EE_|DS7PR11MB7932:EE_ X-MS-Office365-Filtering-Correlation-Id: 1c1f576b-8923-4ea6-0666-08dd9324a7f4 X-LD-Processed: 46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|366016|1800799024; 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>>   extern unsigned long _find_first_and_bit(const unsigned long *addr1, >>                        const unsigned long *addr2, unsigned long size); >> +unsigned long _find_first_andnot_bit(const unsigned long *addr1, const unsigned long *addr2, >> +                 unsigned long size); >>   unsigned long _find_first_and_and_bit(const unsigned long *addr1, const unsigned long *addr2, >>                         const unsigned long *addr3, unsigned long size); >>   extern unsigned long _find_first_zero_bit(const unsigned long *addr, unsigned long size); >> @@ -347,6 +349,29 @@ unsigned long find_first_and_bit(const unsigned long *addr1, >>   } >>   #endif >>   +/** >> + * find_first_andnot_bit - find the first bit set in 1st memory region and unset in 2nd >> + * @addr1: The first address to base the search on >> + * @addr2: The second address to base the search on >> + * @size: The bitmap size in bits >> + * >> + * Returns the bit number for the first set bit >> + * If no bits are set, returns >= @size. >> + */ >> +static __always_inline >> +unsigned long find_first_andnot_bit(const unsigned long *addr1, >> +                 const unsigned long *addr2, >> +                 unsigned long size) > CHECK: Alignment should match open parenthesis > This was brought up [2] during review of V1 of this specific work [1]. Please compare this code to the rest of the file. Specifically, this alignment guidance is not adhered to in this file. In this contribution we thus accept the contribution from bitmap API maintainer (Yury) without dictating how formatting should be done. Reinette [1] https://lore.kernel.org/all/20250407153856.133093-1-yury.norov@gmail.com/ [2] https://lore.kernel.org/all/062e5e61-e2c3-418e-987b-33fd9009d03f@intel.com/