target: Convert se_device statistics to atomic_long_t
This patch converts the handful of se_device statistics to type
atomic_long_t, instead of using se_device->stats_lock when
incrementing these values.
More importantly, go ahead and drop the spinlock usage within
transport_lookup_cmd_lun() fast-path code.
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 96bf1b0..fab91ba 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -683,11 +683,10 @@
/* Pointer to transport specific device structure */
u32 dev_index;
u64 creation_time;
- u32 num_resets;
- u64 num_cmds;
- u64 read_bytes;
- u64 write_bytes;
- spinlock_t stats_lock;
+ atomic_long_t num_resets;
+ atomic_long_t num_cmds;
+ atomic_long_t read_bytes;
+ atomic_long_t write_bytes;
/* Active commands on this virtual SE device */
atomic_t simple_cmds;
atomic_t dev_ordered_id;
