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sched/core: Convert vcpu_is_preempted() from macro to an inline function

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Clang reports this warning:

  kernel/locking/osq_lock.c:25:19: warning: unused function 'node_cpu' [-Wunused-function]

due to osq_lock() calling 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 <cai@lca.pw>
Acked-by: Mel Gorman <mgorman@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: bsegall@google.com
Cc: dietmar.eggemann@arm.com
Cc: juri.lelli@redhat.com
Cc: rostedt@goodmis.org
Cc: vincent.guittot@linaro.org
Link: https://lkml.kernel.org/r/1568730894-10483-1-git-send-email-cai@lca.pw
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Qian Cai 2019-09-17 10:34:54 -04:00 committed by Ingo Molnar
parent dac9f027b1
commit 42fd8baab3
1 changed files with 4 additions and 1 deletions

5
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);