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UPSTREAM: arm64/spinlock: fix a -Wunused-function warning

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The commit f5bfdc8e3947 ("locking/osq: Use optimized spinning loop for
arm64") introduced a warning from Clang because vcpu_is_preempted() is
compiled away,

kernel/locking/osq_lock.c:25:19: warning: unused function 'node_cpu'
[-Wunused-function]
static inline int node_cpu(struct optimistic_spin_node *node)
                  ^
1 warning generated.

Fix it by converting vcpu_is_preempted() to a static inline function.

Fixes: f5bfdc8e3947 ("locking/osq: Use optimized spinning loop for arm64")
Acked-by: Waiman Long <longman@redhat.com>
Signed-off-by: Qian Cai <cai@lca.pw>
Signed-off-by: Will Deacon <will@kernel.org>
Change-Id: I9931db94b9cc6e06fcb8ee2730228e05b455162f
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
This commit is contained in:
Qian Cai 2020-01-23 15:20:51 -05:00 committed by spakkkk
parent b331d7272b
commit 68b02873c8
1 changed files with 5 additions and 1 deletions
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6
arch/arm64/include/asm/spinlock.h
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@ -29,6 +29,10 @@
* See:
* https://lore.kernel.org/lkml/20200110100612.GC2827@hirez.programming.kicks-ass.net
*/
#define vcpu_is_preempted(cpu) false
#define vcpu_is_preempted vcpu_is_preempted
static inline bool vcpu_is_preempted(int cpu)
{
return false;
}
#endif /* __ASM_SPINLOCK_H */