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authorQian Cai <cai@lca.pw>2020-01-23 15:20:51 -0500
committerWill Deacon <will@kernel.org>2020-02-10 11:29:24 +0000
commit345d52c184dc7de98cff63f1bfa6f90e9db19809 (patch)
tree4eae3ec94e0d4a3356c97dc0f193c11e6ab7f9cf /arch
parentfca3d33d8ad61eb53eca3ee4cac476d1e31b9008 (diff)
downloadlinux-345d52c184dc7de98cff63f1bfa6f90e9db19809.tar.bz2
arm64/spinlock: fix a -Wunused-function warning
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm64/include/asm/spinlock.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/spinlock.h b/arch/arm64/include/asm/spinlock.h
index 102404dc1e13..9083d6992603 100644
--- a/arch/arm64/include/asm/spinlock.h
+++ b/arch/arm64/include/asm/spinlock.h
@@ -18,6 +18,10 @@
* 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 */