The test robot reported a wrong assignment of a per-CPU variable which it detected by using sparse and sent a report. The assignment itself is correct. The annotation for sparse was wrong and hence the report. The first pointer is a "normal" pointer and points to the per-CPU memory area. That means that the __percpu annotation has to be moved.
Move the __percpu annotation to pointer which points to the per-CPU area. This change affects only the sparse tool (and is ignored by the compiler). Reported-by: kbuild test robot <[email protected]> Link: https://lkml.kernel.org/r/201904231828.a3jayl28%[email protected] Fixes: f97f8f06a49fe ("smpboot: Provide infrastructure for percpu hotplug threads") Signed-off-by: Sebastian Andrzej Siewior <[email protected]> --- include/linux/smpboot.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/smpboot.h b/include/linux/smpboot.h index d0884b5250010..9d1bc65d226cc 100644 --- a/include/linux/smpboot.h +++ b/include/linux/smpboot.h @@ -29,7 +29,7 @@ struct smpboot_thread_data; * @thread_comm: The base name of the thread */ struct smp_hotplug_thread { - struct task_struct __percpu **store; + struct task_struct * __percpu *store; struct list_head list; int (*thread_should_run)(unsigned int cpu); void (*thread_fn)(unsigned int cpu); -- 2.20.1
