atomic_dec_not_zero is defined for each architecture through
<linux/atomic.h> to provide the functionality of
atomic_add_unless(x, -1, 0).
Signed-off-by: Sven Eckelmann <sven@xxxxxxxxxxxxx>
Cc: Neil Horman <nhorman@xxxxxxxxxxxxx>
Cc: netdev@xxxxxxxxxxxxxxx
---
net/core/drop_monitor.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/net/core/drop_monitor.c b/net/core/drop_monitor.c
index 7f36b38..ef4a05d 100644
--- a/net/core/drop_monitor.c
+++ b/net/core/drop_monitor.c
@@ -137,7 +137,7 @@ static void trace_drop_common(struct sk_buff *skb, void *location)
struct per_cpu_dm_data *data = &__get_cpu_var(dm_cpu_data);
- if (!atomic_add_unless(&data->dm_hit_count, -1, 0)) {
+ if (!atomic_dec_not_zero(&data->dm_hit_count)) {
/*
* we're already at zero, discard this hit
*/
--
1.7.5.4
--
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