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authorNicholas Bellinger <nab@linux-iscsi.org>2013-11-13 21:34:55 -0500
committerNicholas Bellinger <nab@linux-iscsi.org>2013-11-13 21:34:55 -0500
commitee480683d975973e3ff679850871e00e011c4a96 (patch)
treea7c5d09f34b8f606fb3f709eb15615513d5981db /include/target
parent29f4c090079f442ea2723d292e4e64f0b6ac1f27 (diff)
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>
Diffstat (limited to 'include/target')
-rw-r--r--include/target/target_core_base.h9
1 files changed, 4 insertions, 5 deletions
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 96bf1b0239cc..fab91baf8ef4 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -683,11 +683,10 @@ struct se_device {
683 /* Pointer to transport specific device structure */ 683 /* Pointer to transport specific device structure */
684 u32 dev_index; 684 u32 dev_index;
685 u64 creation_time; 685 u64 creation_time;
686 u32 num_resets; 686 atomic_long_t num_resets;
687 u64 num_cmds; 687 atomic_long_t num_cmds;
688 u64 read_bytes; 688 atomic_long_t read_bytes;
689 u64 write_bytes; 689 atomic_long_t write_bytes;
690 spinlock_t stats_lock;
691 /* Active commands on this virtual SE device */ 690 /* Active commands on this virtual SE device */
692 atomic_t simple_cmds; 691 atomic_t simple_cmds;
693 atomic_t dev_ordered_id; 692 atomic_t dev_ordered_id;