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X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Nov 2025 13:26:47.6338 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f9b5bb47-9948-4ff9-1162-08de1ba5ce44 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: AM2PEPF0001C714.eurprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB9PR08MB6345 On 2025-11-04 12:35 pm, Will Deacon wrote: > On Tue, Nov 04, 2025 at 05:43:40PM +0800, kernel test robot wrote: >> tree: https://git.kernel.org/pub/scm/linux/kernel/git/will/linux.git for-next/perf >> head: 989b40b7578a2be7b0388522d33d751b257d59d9 >> commit: 8fa08f8835e57e1fd5e2994c9cf76c84dadc1235 [6/8] perf/arm-ni: Add NoC S3 support >> config: sparc64-randconfig-002-20251104 (https://download.01.org/0day-ci/archive/20251104/202511041749.ok8zDP6u-lkp@intel.com/config) >> compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project d2625a438020ad35330cda29c3def102c1687b1b) >> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251104/202511041749.ok8zDP6u-lkp@intel.com/reproduce) >> >> If you fix the issue in a separate patch/commit (i.e. not just a new version of >> the same patch/commit), kindly add following tags >> | Reported-by: kernel test robot >> | Closes: https://lore.kernel.org/oe-kbuild-all/202511041749.ok8zDP6u-lkp@intel.com/ >> >> All warnings (new ones prefixed by >>): >> >>>> drivers/perf/arm-ni.c:433:13: warning: operator '?:' has lower precedence than '+'; '+' will be evaluated first [-Wparentheses] >> 432 | hw->event_base = (unsigned long)cd->pmu_base + >> | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> 433 | is_7xx ? NI700_PMCCNTR_L : NI_PMCCNTR_L; >> | ~~~~~~ ^ >> drivers/perf/arm-ni.c:433:13: note: place parentheses around the '+' expression to silence this warning >> 432 | hw->event_base = (unsigned long)cd->pmu_base + >> | ( >> 433 | is_7xx ? NI700_PMCCNTR_L : NI_PMCCNTR_L; >> | ^ >> | ) > > Hrm. Doesn't that mean this is completely broken or am I misreading the > report? Bah, my arm64 W=1 build (which I did do in the hope of catching any such sillies...) fails to flag that :( Truth is this is a fresh refactoring of the mess I originally wrote that got tested by someone else 18 months ago, and I don't have any hardware to functionally test it myself. Feel free to drop it and I'll send a complete v2, or I can do an incremental fix if you prefer (I already realised I could have streamlined the version check to a one-off in event_init as well.) Cheers, Robin.