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109e238174
linux/drivers/target/iscsi
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Roland Dreier 109e238174 target: Drop iSCSI use of mutex around max_cmd_sn increment 
In a performance profile, taking a mutex in iscsit_increment_maxcmdsn()
shows up very high.  However taking a mutex around "sess->max_cmd_sn += 1"
seems pretty silly: we're not serializing against other contexts in
any useful way.

I did a quick audit and there don't appear to be any other places that
use max_cmd_sn within the mutex more than once, so this lock can't be
providing any useful serialization.

(Get correct values for logging - fix whitespace damage)

Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Spencer Baugh <sbaugh@catern.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2015-08-02 23:11:52 -07:00
..
iscsi_target_auth.c iscsi-target: Move iscsi_target_[core,stat].h under linux include 2015-01-30 13:06:21 -08:00
iscsi_target_auth.h iscsi-target: Fix CHAP_A parameter list handling 2014-06-05 19:44:02 -07:00
iscsi_target_configfs.c target: Drop iSCSI use of mutex around max_cmd_sn increment 2015-08-02 23:11:52 -07:00
iscsi_target_datain_values.c iscsi-target: Move iscsi_target_[core,stat].h under linux include 2015-01-30 13:06:21 -08:00
iscsi_target_datain_values.h
iscsi_target_device.c target: Drop iSCSI use of mutex around max_cmd_sn increment 2015-08-02 23:11:52 -07:00
iscsi_target_device.h target/iscsi: Remove unneeded wrapper functions 2012-02-25 14:37:47 -08:00
iscsi_target_erl0.c iscsi-target: remove support for obsolete markers 2015-05-30 22:41:43 -07:00
iscsi_target_erl0.h iscsi-target: remove support for obsolete markers 2015-05-30 22:41:43 -07:00
iscsi_target_erl1.c iscsi-target: Move iscsi_target_[core,stat].h under linux include 2015-01-30 13:06:21 -08:00
iscsi_target_erl1.h iscsit: use the itt_t abstract type 2012-10-03 14:21:50 -07:00
iscsi_target_erl2.c iscsi-target: Move iscsi_target_[core,stat].h under linux include 2015-01-30 13:06:21 -08:00
iscsi_target_erl2.h iscsit: proper endianess conversions 2012-10-03 14:39:22 -07:00
iscsi_target_login.c target: Drop iSCSI use of mutex around max_cmd_sn increment 2015-08-02 23:11:52 -07:00
iscsi_target_login.h iscsi-target: remove support for obsolete markers 2015-05-30 22:41:43 -07:00
iscsi_target_nego.c target: Drop iSCSI use of mutex around max_cmd_sn increment 2015-08-02 23:11:52 -07:00
iscsi_target_nego.h iscsi-target: Initial traditional TCP conversion to iscsit_transport 2013-04-25 01:05:26 -07:00
iscsi_target_nodeattrib.c iscsi-target: Move iscsi_target_[core,stat].h under linux include 2015-01-30 13:06:21 -08:00
iscsi_target_nodeattrib.h iscsi-target: Expose default_erl as TPG attribute 2013-11-20 11:57:18 -08:00
iscsi_target_parameters.c iscsi-target: fix variable name typo in iscsi_check_acceptor_state() 2015-05-30 22:42:41 -07:00
iscsi_target_parameters.h iscsi-target: remove support for obsolete markers 2015-05-30 22:41:43 -07:00
iscsi_target_seq_pdu_list.c iscsi-target: Move iscsi_target_[core,stat].h under linux include 2015-01-30 13:06:21 -08:00
iscsi_target_seq_pdu_list.h target/iscsi: Fold _decide_list_to_build into _build_pdu_and_seq_lists 2012-04-14 17:40:38 -07:00
iscsi_target_stat.c iscsi-target: Move iscsi_target_[core,stat].h under linux include 2015-01-30 13:06:21 -08:00
iscsi_target_tmr.c target: Drop iSCSI use of mutex around max_cmd_sn increment 2015-08-02 23:11:52 -07:00
iscsi_target_tmr.h
iscsi_target_tpg.c iscsi-target: Add tpg_enabled_sendtargets for disabled discovery 2015-08-02 21:59:59 -07:00
iscsi_target_tpg.h iscsi-target: Add tpg_enabled_sendtargets for disabled discovery 2015-08-02 21:59:59 -07:00
iscsi_target_transport.c target: Deletion of unnecessary checks before the function call "module_put" 2014-12-01 21:35:21 -08:00
iscsi_target_util.c target: Drop iSCSI use of mutex around max_cmd_sn increment 2015-08-02 23:11:52 -07:00
iscsi_target_util.h iscsi-target: remove support for obsolete markers 2015-05-30 22:41:43 -07:00
iscsi_target.c target: Drop iSCSI use of mutex around max_cmd_sn increment 2015-08-02 23:11:52 -07:00
iscsi_target.h target: simplify the target template registration API 2015-04-14 12:28:41 -07:00
Kconfig target: iscsi_target depends on NET 2011-07-28 20:16:18 +00:00
Makefile iscsi-target: Drop legacy iscsi_target_tq.c logic 2015-03-26 14:49:49 -07:00