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Wed, 21 Apr 2021 15:07:25 +0000 Received: from [10.26.49.10] (172.20.145.6) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 21 Apr 2021 15:07:15 +0000 Subject: Re: [PATCH v4 05/10] signal: Introduce TRAP_PERF si_code and si_perf to siginfo To: Marco Elver , , , , , , , , CC: , , , , , , , , , , , , , , , , , Geert Uytterhoeven , linux-tegra References: <20210408103605.1676875-1-elver@google.com> <20210408103605.1676875-6-elver@google.com> From: Jon Hunter Message-ID: <81254854-aa22-fab1-fc6f-22716b7c2732@nvidia.com> Date: Wed, 21 Apr 2021 16:07:13 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1 MIME-Version: 1.0 In-Reply-To: <20210408103605.1676875-6-elver@google.com> Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [172.20.145.6] X-ClientProxiedBy: HQMAIL111.nvidia.com (172.20.187.18) To HQMAIL107.nvidia.com (172.20.187.13) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: ec883513-a740-4be9-fa1c-08d904d72c58 X-MS-TrafficTypeDiagnostic: MWHPR12MB1519: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:1148; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Apr 2021 15:07:25.7014 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ec883513-a740-4be9-fa1c-08d904d72c58 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.112.34];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT052.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MWHPR12MB1519 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Hello! On 08/04/2021 11:36, Marco Elver wrote: > Introduces the TRAP_PERF si_code, and associated siginfo_t field > si_perf. These will be used by the perf event subsystem to send signals > (if requested) to the task where an event occurred. > > Acked-by: Geert Uytterhoeven # m68k > Acked-by: Arnd Bergmann # asm-generic > Signed-off-by: Marco Elver Since next-20210420 I have noticed a boot regression on all 32-bit Tegra that we are testing. Bisect is pointing to this commit and reverting this patch and patch 6/10 does resolve the issue. Interestingly there is no apparent crash, but these systems just appear to hang silently after mounting the rootfs. If anyone has any thoughts let me know! Thanks Jon -- nvpublic