Clang reports a warning, kernel/locking/osq_lock.c:25:19: warning: unused function 'node_cpu' [-Wunused-function]
due to osq_lock() calls vcpu_is_preempted(node_cpu(node->prev))), but vcpu_is_preempted() is compiled away. Fix it by converting the dummy vcpu_is_preempted() from a macro to a proper static inline function. Signed-off-by: Qian Cai <[email protected]> --- include/linux/sched.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/include/linux/sched.h b/include/linux/sched.h index f0edee94834a..e2e91960d79f 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1856,7 +1856,10 @@ static inline void set_task_cpu(struct task_struct *p, unsigned int cpu) * running or not. */ #ifndef vcpu_is_preempted -# define vcpu_is_preempted(cpu) false +static inline bool vcpu_is_preempted(int cpu) +{ + return false; +} #endif extern long sched_setaffinity(pid_t pid, const struct cpumask *new_mask); -- 1.8.3.1
