Public bug reported:
With the resolute 7.0.0-42.42, the hwtracing/coresight fails to build:
linux-main/drivers/hwtracing/coresight/coresight-etm4x-core.c: In function
‘etm4_enable_sysfs_smp_call’:
linux-main/drivers/hwtracing/coresight/coresight-etm4x-core.c:642:14: error:
‘struct coresight_device’ has no member named ‘path’
642 | csdev->path = arg->path;
| ^~
linux-main/drivers/hwtracing/coresight/coresight-etm4x-core.c: In function
‘etm4_enable_perf’:
linux-main/drivers/hwtracing/coresight/coresight-etm4x-core.c:916:14: error:
‘struct coresight_device’ has no member named ‘path’
916 | csdev->path = path;
| ^~
linux-main/drivers/hwtracing/coresight/coresight-etm4x-core.c: In function
‘etm4_disable_sysfs_smp_call’:
linux-main/drivers/hwtracing/coresight/coresight-etm4x-core.c:1096:23: error:
‘struct coresight_device’ has no member named ‘path’
1096 | drvdata->csdev->path = NULL;
| ^~
linux-main/drivers/hwtracing/coresight/coresight-etm4x-core.c: In function
‘etm4_disable_perf’:
linux-main/drivers/hwtracing/coresight/coresight-etm4x-core.c:1126:23: error:
‘struct coresight_device’ has no member named ‘path’
1126 | drvdata->csdev->path = NULL;
Looks like the culprit commit is:
coresight: etm4x: Set active path on target CPU
BugLink: https://bugs.launchpad.net/bugs/2169638
Set the path pointer on the target CPU during ETM enable and disable.
This ensures the device mode and path pointer are updated together and
observed atomically by the CPU PM notifier.
Tested-by: James Clark <[email protected]>
Reviewed-by: Yeoreum Yun <[email protected]>
Reviewed-by: James Clark <[email protected]>
Tested-by: Jie Gan <[email protected]>
Signed-off-by: Leo Yan <[email protected]>
Signed-off-by: Suzuki K Poulose <[email protected]>
Link:
https://lore.kernel.org/r/20260515-arm_coresight_path_power_management_improvement-v14-20-f88c4a3ec...@arm.com
(cherry picked from commit b6d54a94dcf42d405ed6de502c42572b2a462445)
[cremfuelled: Needed for subsequent commit.]
Signed-off-by: Alice C. Munduruca <[email protected]>
Signed-off-by: Mehmet Basaran <[email protected]>
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux (Ubuntu Resolute)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Resolute)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2171617
Title:
resolute generic kernel build failure on drivers/hwtracing/coresight
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