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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: yii4qfA1YpGPl92A5nWa6ExJihOr3gyyUXIBPVAhUic/AnLUX7EeQI5cK5GFuYioRZiGOO3LinxqdqoiM/qDOQkDY7JjVjVtfxhz0FjtXIZ2gKdNfwmbUd6aqbe0e5wDeiPayx1sYMi0meImAM0SyUV8GZ3mRHyZvcMI25ssB/2nccvTrKzdiVrDSyopxcH/nN+XYnkRYNyUP2KT3EnusPwkomHZsAL5LkBQC0rmNYCUQSvhuEfeCzxQOIRwLX0IJGEAL20HD3oZzS1e8xS7EdyxoIUcx7z/g1KXUtPVA96KI/YYQ47zM3w3+lMW/lq0TTNcVSFqkydOZEvp99Rst9WiU2s4X1gRdTtryRUVfBG5I1j5cICmfF2s1X0LCCQ2EF82By5EP695oCWhsTEOSc34c+bfAjF6VM9Pg/d2yWErY/8GrtmOlEQRZNbNlXBQ X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Mar 2026 09:40:09.6805 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: dc5f8ee7-96b7-47f3-7eb4-08de88c02cac X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[4.158.2.129];Helo=[outbound-uk1.az.dlp.m.darktrace.com] X-MS-Exchange-CrossTenant-AuthSource: DU2PEPF0001E9C4.eurprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB9PR08MB7495 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260323_024015_976933_7D3A1934 X-CRM114-Status: GOOD ( 18.14 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 20/03/2026 17:42, Leo Yan wrote: > Add a new flag CORESIGHT_DESC_CPU_BOUND to indicate components that > are CPU bound. Populate CPU ID into the coresight_device structure; > otherwise, set CPU ID to -1 for non CPU bound devices. > > Use the {0} initializer to clear coresight_desc structures to avoid > uninitialized values. > > Signed-off-by: Leo Yan > --- > drivers/hwtracing/coresight/coresight-catu.c | 2 +- > drivers/hwtracing/coresight/coresight-core.c | 5 +++++ > drivers/hwtracing/coresight/coresight-cti-core.c | 9 ++++++--- > drivers/hwtracing/coresight/coresight-etm3x-core.c | 2 ++ > drivers/hwtracing/coresight/coresight-etm4x-core.c | 2 ++ > drivers/hwtracing/coresight/coresight-trbe.c | 2 ++ > include/linux/coresight.h | 8 ++++++++ > 7 files changed, 26 insertions(+), 4 deletions(-) > > diff --git a/drivers/hwtracing/coresight/coresight-catu.c b/drivers/hwtracing/coresight/coresight-catu.c > index ce71dcddfca2558eddd625de58a709b151f2e07e..43abe13995cf3c96e70dcf97856872d70f71345a 100644 > --- a/drivers/hwtracing/coresight/coresight-catu.c > +++ b/drivers/hwtracing/coresight/coresight-catu.c > @@ -514,7 +514,7 @@ static int __catu_probe(struct device *dev, struct resource *res) > int ret = 0; > u32 dma_mask; > struct catu_drvdata *drvdata; > - struct coresight_desc catu_desc; > + struct coresight_desc catu_desc = { 0 }; > struct coresight_platform_data *pdata = NULL; > void __iomem *base; > > diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c > index 46f247f73cf64a97b9353b84ba5b76b991676f5f..4a246fb6bff0a75cf12995bd00a9adefb93839ec 100644 > --- a/drivers/hwtracing/coresight/coresight-core.c > +++ b/drivers/hwtracing/coresight/coresight-core.c > @@ -1342,6 +1342,11 @@ struct coresight_device *coresight_register(struct coresight_desc *desc) > csdev->access = desc->access; > csdev->orphan = true; > > + if (desc->flags & CORESIGHT_DESC_CPU_BOUND) > + csdev->cpu = desc->cpu; > + else > + csdev->cpu = -1; > + Additionally it may be a good idea to reject drivers that do not set CPU for per_cpu_source/per_cpu_sink ? That can be added a separate patch. Suzuki