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X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Dec 2024 17:02:50.0606 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 301fd193-a685-4491-7b8b-08dd21e14d10 X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[63.35.35.123];Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: DU2PEPF00028CFC.eurprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PAVPR08MB9579 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241221_090304_270885_E4A75989 X-CRM114-Status: GOOD ( 19.26 ) 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 Hi Suzuki. > On 20/12/2024 11:39, Yeoreum Yun wrote: > > Hi Suzuki, > > > On 20/12/2024 10:38, Yeoreum Yun wrote: > > > > Hi Mike. > > > > > > > > > Notably missing is the same changes for the etm3x driver. The ETMv3.x > > > > > and PTM1.x are supported by this driver, and these trace source > > > > > variants are also supported in perf in the cs_etm.c code. > > > > > > > > But I wonder etmv3 needs to change. Because its spinlock is used only > > > > via sysfs enable/disable path. > > > > So, I think it doesn't need to change the lock type. > > > > > > ETM3 can be used in perf mode, similar to the ETM4x. > > > > > > So, you need to fix it as well. > > > > Yes. But etmv3's etmdata->spinlock doesn't used in perf path > > its usage is only in sysfs interface path. > > That's why I think it could skip too. > > Ok, which I think is a problem, since the sysfs mode could overwrite the > "config" while perf is preparing the config from the event parsing. > And we would need it there. So, for the time being, we can accept this > series, pending other review comments and address this issue separately > Here is the patchset fixing above one: - https://lore.kernel.org/linux-arm-kernel/20241221165934.1161856-1-yeoreum.yun@arm.com/