diff options
| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2013-11-14 06:54:45 +0400 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2013-11-20 09:38:52 +0400 |
| commit | 04f3b31bff720f01d684100c868c88f67ced8dc8 (patch) | |
| tree | d9b5fac82a5e6c23b98f33c64901affa37bbfd67 /drivers/target/iscsi/iscsi_target_stat.c | |
| parent | ee480683d975973e3ff679850871e00e011c4a96 (diff) | |
| download | linux-04f3b31bff720f01d684100c868c88f67ced8dc8.tar.xz | |
iscsi-target: Convert iscsi_session statistics to atomic_long_t
This patch converts a handful of iscsi_session statistics to type
atomic_long_t, instead of using iscsi_session->session_stats_lock
when incrementing these values.
More importantly, go ahead and drop the spinlock usage within
iscsit_setup_scsi_cmd(), iscsit_check_dataout_hdr(),
iscsit_send_datain(), and iscsit_build_rsp_pdu() fast-path code.
(Squash in Roland's target: Remove write-only stats fields and lock
from struct se_node_acl)
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/iscsi/iscsi_target_stat.c')
| -rw-r--r-- | drivers/target/iscsi/iscsi_target_stat.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/drivers/target/iscsi/iscsi_target_stat.c b/drivers/target/iscsi/iscsi_target_stat.c index f788e8b5e855..103395510307 100644 --- a/drivers/target/iscsi/iscsi_target_stat.c +++ b/drivers/target/iscsi/iscsi_target_stat.c @@ -792,7 +792,8 @@ static ssize_t iscsi_stat_sess_show_attr_cmd_pdus( if (se_sess) { sess = se_sess->fabric_sess_ptr; if (sess) - ret = snprintf(page, PAGE_SIZE, "%u\n", sess->cmd_pdus); + ret = snprintf(page, PAGE_SIZE, "%lu\n", + atomic_long_read(&sess->cmd_pdus)); } spin_unlock_bh(&se_nacl->nacl_sess_lock); @@ -815,7 +816,8 @@ static ssize_t iscsi_stat_sess_show_attr_rsp_pdus( if (se_sess) { sess = se_sess->fabric_sess_ptr; if (sess) - ret = snprintf(page, PAGE_SIZE, "%u\n", sess->rsp_pdus); + ret = snprintf(page, PAGE_SIZE, "%lu\n", + atomic_long_read(&sess->rsp_pdus)); } spin_unlock_bh(&se_nacl->nacl_sess_lock); @@ -838,8 +840,8 @@ static ssize_t iscsi_stat_sess_show_attr_txdata_octs( if (se_sess) { sess = se_sess->fabric_sess_ptr; if (sess) - ret = snprintf(page, PAGE_SIZE, "%llu\n", - (unsigned long long)sess->tx_data_octets); + ret = snprintf(page, PAGE_SIZE, "%lu\n", + atomic_long_read(&sess->tx_data_octets)); } spin_unlock_bh(&se_nacl->nacl_sess_lock); @@ -862,8 +864,8 @@ static ssize_t iscsi_stat_sess_show_attr_rxdata_octs( if (se_sess) { sess = se_sess->fabric_sess_ptr; if (sess) - ret = snprintf(page, PAGE_SIZE, "%llu\n", - (unsigned long long)sess->rx_data_octets); + ret = snprintf(page, PAGE_SIZE, "%lu\n", + atomic_long_read(&sess->rx_data_octets)); } spin_unlock_bh(&se_nacl->nacl_sess_lock); @@ -886,8 +888,8 @@ static ssize_t iscsi_stat_sess_show_attr_conn_digest_errors( if (se_sess) { sess = se_sess->fabric_sess_ptr; if (sess) - ret = snprintf(page, PAGE_SIZE, "%u\n", - sess->conn_digest_errors); + ret = snprintf(page, PAGE_SIZE, "%lu\n", + atomic_long_read(&sess->conn_digest_errors)); } spin_unlock_bh(&se_nacl->nacl_sess_lock); @@ -910,8 +912,8 @@ static ssize_t iscsi_stat_sess_show_attr_conn_timeout_errors( if (se_sess) { sess = se_sess->fabric_sess_ptr; if (sess) - ret = snprintf(page, PAGE_SIZE, "%u\n", - sess->conn_timeout_errors); + ret = snprintf(page, PAGE_SIZE, "%lu\n", + atomic_long_read(&sess->conn_timeout_errors)); } spin_unlock_bh(&se_nacl->nacl_sess_lock); |