From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
Hi folks,
Here is a small set of miscellaneous improvements to the iscsi-target
thread_set code to reduce latency for handling 100's of simultaneous
logins, that goes along with iscsi-target login multi-plexing logic
in-flight for v3.12-rc1.
The first patch fixes a long-standing race between rx/tx pre handlers
use of flush_signals(), and iscsi_deallocate_extra_thread_sets() setting
of ISCSI_THREAD_SET_DIE before calling kthread_stop().
The second patch removes the iscsi_thread_set->[rx,tx]_post_start_comp
that was originally used synchronize startup between rx and tx threads
within a single thread_set.
And the third patch removes an unnecessary wait_for_completion() within
iscsi_get_thread_set(), that originally would wait an extra second when
no thread_set pair was available.
Thanks,
--nab
Nicholas Bellinger (3):
iscsi-target: Fix race with thread_pre_handler flush_signals +
ISCSI_THREAD_SET_DIE
iscsi-target: Remove iscsi_thread_set->[rx,tx]_post_start_comp
iscsi-target: Remove unnecessary wait_for_completion in
iscsi_get_thread_set
drivers/target/iscsi/iscsi_target_tq.c | 63 +++++++++++---------------------
drivers/target/iscsi/iscsi_target_tq.h | 4 --
2 files changed, 22 insertions(+), 45 deletions(-)
--
1.7.2.5
--
To unsubscribe from this list: send the line "unsubscribe target-devel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
