* Re: [PATCH v2] perf/arm-cmn: Add workarounds for CMN-S3 on Graviton5
[not found] <20260504133923.23373-1-avivb@amazon.com>
@ 2026-05-05 2:31 ` kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-05-05 2:31 UTC (permalink / raw)
To: Aviv Bakal, robin.murphy, will, mark.rutland
Cc: llvm, oe-kbuild-all, linux-arm-kernel, linux-perf-users,
linux-kernel, zeev, blakgeof
Hi Aviv,
kernel test robot noticed the following build errors:
[auto build test ERROR on arm-perf/for-next/perf]
[also build test ERROR on soc/for-next linus/master v7.1-rc2 next-20260430]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Aviv-Bakal/perf-arm-cmn-Add-workarounds-for-CMN-S3-on-Graviton5/20260505-011858
base: https://git.kernel.org/pub/scm/linux/kernel/git/will/linux.git for-next/perf
patch link: https://lore.kernel.org/r/20260504133923.23373-1-avivb%40amazon.com
patch subject: [PATCH v2] perf/arm-cmn: Add workarounds for CMN-S3 on Graviton5
config: i386-buildonly-randconfig-004-20260505 (https://download.01.org/0day-ci/archive/20260505/202605051052.zOemYJY9-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260505/202605051052.zOemYJY9-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 <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202605051052.zOemYJY9-lkp@intel.com/
All errors (new ones prefixed by >>):
>> drivers/perf/arm-cmn.c:617:15: error: static assertion failed due to requirement 'sizeof(struct arm_cmn_hw_event) <= __builtin_offsetof(struct hw_perf_event, target)': sizeof(struct arm_cmn_hw_event) <= offsetof(struct hw_perf_event, target)
617 | static_assert(sizeof(struct arm_cmn_hw_event) <= offsetof(struct hw_perf_event, target));
| ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:77:50: note: expanded from macro 'static_assert'
77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
| ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:78:56: note: expanded from macro '__static_assert'
78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~
drivers/perf/arm-cmn.c:617:47: note: expression evaluates to '104 <= 96'
617 | static_assert(sizeof(struct arm_cmn_hw_event) <= offsetof(struct hw_perf_event, target));
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:77:50: note: expanded from macro 'static_assert'
77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
| ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:78:56: note: expanded from macro '__static_assert'
78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~
1 error generated.
vim +617 drivers/perf/arm-cmn.c
a88fa6c28b867a Robin Murphy 2021-12-03 600
0ba64770a2f2e5 Robin Murphy 2020-09-18 601 struct arm_cmn_hw_event {
0ba64770a2f2e5 Robin Murphy 2020-09-18 602 struct arm_cmn_node *dn;
359414b33e00ba Robin Murphy 2024-09-02 603 u64 dtm_idx[DIV_ROUND_UP(CMN_MAX_NODES_PER_EVENT * 2, 64)];
7633ec2c262fab Robin Murphy 2023-10-20 604 s8 dtc_idx[CMN_MAX_DTCS];
0ba64770a2f2e5 Robin Murphy 2020-09-18 605 u8 num_dns;
60d1504070c22c Robin Murphy 2021-12-03 606 u8 dtm_offset;
4a112585ebe8cb Ilkka Koskinen 2024-06-17 607
4a112585ebe8cb Ilkka Koskinen 2024-06-17 608 /*
4a112585ebe8cb Ilkka Koskinen 2024-06-17 609 * WP config registers are divided to UP and DOWN events. We need to
4a112585ebe8cb Ilkka Koskinen 2024-06-17 610 * keep to track only one of them.
4a112585ebe8cb Ilkka Koskinen 2024-06-17 611 */
4a112585ebe8cb Ilkka Koskinen 2024-06-17 612 DECLARE_BITMAP(wp_idx, CMN_MAX_XPS);
4a112585ebe8cb Ilkka Koskinen 2024-06-17 613
23760a0144173e Robin Murphy 2022-04-18 614 bool wide_sel;
65adf71398f5af Robin Murphy 2022-04-18 615 enum cmn_filter_select filter_sel;
0ba64770a2f2e5 Robin Murphy 2020-09-18 616 };
ff436cee694ee8 Robin Murphy 2024-09-02 @617 static_assert(sizeof(struct arm_cmn_hw_event) <= offsetof(struct hw_perf_event, target));
0ba64770a2f2e5 Robin Murphy 2020-09-18 618
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