Messages in this thread Patch in this message | | | From | Sven Eckelmann <> | Subject | [PATCHv4 10/11] drop_monitor: Use *_dec_not_zero instead of *_add_unless | Date | Wed, 27 Jul 2011 11:47:49 +0200 |
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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@narfation.org> Cc: Neil Horman <nhorman@tuxdriver.com> Cc: netdev@vger.kernel.org --- 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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