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-rw-r--r--include/linux/u64_stats_sync.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/include/linux/u64_stats_sync.h b/include/linux/u64_stats_sync.h
index 5bdbd9f49395..07ee0f84a46c 100644
--- a/include/linux/u64_stats_sync.h
+++ b/include/linux/u64_stats_sync.h
@@ -90,6 +90,28 @@ static inline void u64_stats_update_end(struct u64_stats_sync *syncp)
90#endif 90#endif
91} 91}
92 92
93static inline unsigned long
94u64_stats_update_begin_irqsave(struct u64_stats_sync *syncp)
95{
96 unsigned long flags = 0;
97
98#if BITS_PER_LONG==32 && defined(CONFIG_SMP)
99 local_irq_save(flags);
100 write_seqcount_begin(&syncp->seq);
101#endif
102 return flags;
103}
104
105static inline void
106u64_stats_update_end_irqrestore(struct u64_stats_sync *syncp,
107 unsigned long flags)
108{
109#if BITS_PER_LONG==32 && defined(CONFIG_SMP)
110 write_seqcount_end(&syncp->seq);
111 local_irq_restore(flags);
112#endif
113}
114
93static inline void u64_stats_update_begin_raw(struct u64_stats_sync *syncp) 115static inline void u64_stats_update_begin_raw(struct u64_stats_sync *syncp)
94{ 116{
95#if BITS_PER_LONG==32 && defined(CONFIG_SMP) 117#if BITS_PER_LONG==32 && defined(CONFIG_SMP)