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Wysocki" , Danilo Krummrich , Chanwoo Choi , MyungJoo Ham , Kyungmin Park , Heiko Stuebner , Xu Yilun , Tom Rix , Moritz Fischer , Yicong Yang , Jonathan Cameron , Dennis Dalessandro , Jason Gunthorpe , Leon Romanovsky , Bjorn Helgaas , Shuai Xue , Will Deacon , Jiucheng Xu , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Robin Murphy , Jing Zhang , Xu Yang , Linu Cherian , Gowthami Thiagarajan , Ji Sheng Teoh , Khuong Dinh , Yury Norov , Kees Cook , Thomas =?iso-8859-1?Q?Wei=DFschuh?= , Aboorva Devarajan , Ilkka Koskinen , Besar Wicaksono , Ma Ke , Chengwen Feng , Ritesh Harjani , Yushan Wang , linux-arm-kernel@lists.infradead.org, imx@lists.linux.dev, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-perf-users@vger.kernel.org, x86@kernel.org, driver-core@lists.linux.dev, linux-pm@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-fpga@vger.kernel.org, linux-rdma@vger.kernel.org, linux-pci@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-cxl@vger.kernel.org, linux-arm-msm@vger.kernel.org Subject: Re: [PATCH v2 01/11] arm: Use sysfs_emit() for cpumask show callbacks Message-ID: References: <20260702154725.185376-1-ynorov@nvidia.com> <20260702154725.185376-2-ynorov@nvidia.com> <2026070244-flier-large-17d1@gregkh> Content-Disposition: inline In-Reply-To: <2026070244-flier-large-17d1@gregkh> X-ClientProxiedBy: SJ0PR03CA0365.namprd03.prod.outlook.com (2603:10b6:a03:3a1::10) To LV3PR12MB9356.namprd12.prod.outlook.com (2603:10b6:408:20c::21) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV3PR12MB9356:EE_|CH3PR12MB7716:EE_ X-MS-Office365-Filtering-Correlation-Id: 66c362a0-4d46-4dae-f7b7-08ded853c26b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|23010399003|376014|7416014|1800799024|366016|18002099003|22082099003|4143699003|5023799004|56012099006|11063799006|6133799003; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org On Thu, Jul 02, 2026 at 05:58:11PM +0200, Greg Kroah-Hartman wrote: > On Thu, Jul 02, 2026 at 11:47:14AM -0400, Yury Norov wrote: > > These callbacks are sysfs show paths. > > > > Use sysfs_emit() and cpumask_pr_args() to emit the masks. > > > > This prepares for removing cpumap_print_to_pagebuf(). > > > > Signed-off-by: Yury Norov > > --- > > arch/arm/mach-imx/mmdc.c | 2 +- > > arch/arm/mm/cache-l2x0-pmu.c | 2 +- > > 2 files changed, 2 insertions(+), 2 deletions(-) > > > > diff --git a/arch/arm/mach-imx/mmdc.c b/arch/arm/mach-imx/mmdc.c > > index b71467c48b87..f6d993b9b1d4 100644 > > --- a/arch/arm/mach-imx/mmdc.c > > +++ b/arch/arm/mach-imx/mmdc.c > > @@ -127,7 +127,7 @@ static ssize_t mmdc_pmu_cpumask_show(struct device *dev, > > { > > struct mmdc_pmu *pmu_mmdc = dev_get_drvdata(dev); > > > > - return cpumap_print_to_pagebuf(true, buf, &pmu_mmdc->cpu); > > + return sysfs_emit(buf, "%*pbl\n", cpumask_pr_args(&pmu_mmdc->cpu)); > > Really? Looks like the original is much simpler to understand, why must > this function go away? Because it's a duplicate of printk("*pbl"), and nothing is simpler in practice. Because the 'true' vs 'false' parameter in cpumap_print_to_pagebuf() is much harder to remember, comparing to "*pbl" vs "*pb" in the standard printk-like API. And because the 'print_to_pagebuf' has a record of misuse. For more details, see: https://lore.kernel.org/all/akANJ-AT7nHpRMq-@yury/ Thanks, Yury _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic