linux-next: build warning after merge of the tip tree

Stephen Rothwell
2024-09-11T05:38:57Z

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Hi all,

After merging the tip tree, today's linux-next build (arm
multi_v7_defconfig) produced this warning:

kernel/events/core.c: In function 'perf_event_setup_cpumask':
kernel/events/core.c:14012:13: warning: the comparison will always evaluate as 'true' for the address of 'thread_sibling' will never be NULL [-Waddress]
14012 | if (!topology_sibling_cpumask(cpu)) {
| ^
In file included from include/linux/topology.h:30,
from include/linux/gfp.h:8,
from include/linux/xarray.h:16,
from include/linux/list_lru.h:14,
from include/linux/fs.h:13,
from kernel/events/core.c:11:
include/linux/arch_topology.h:78:19: note: 'thread_sibling' declared here
78 | cpumask_t thread_sibling;
| ^~~~~~~~~~~~~~

Introduced by commit

4ba4f1afb6a9 ("perf: Generic hotplug support for a PMU with a scope")

--
Cheers,
Stephen Rothwell

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