diff options
| author | Varun Prakash <varun@chelsio.com> | 2016-04-20 00:00:14 +0530 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2016-05-09 23:12:09 -0700 |
| commit | c0b7373be811307c5ff1de8c8547aae3597d24aa (patch) | |
| tree | 59c6e68dee76c79717c2d7d1ccc9a94a9e70c335 /include/target/iscsi | |
| parent | 8567270d8de6192eb2632b45421b1fde9bcda2f2 (diff) | |
| download | lwn-c0b7373be811307c5ff1de8c8547aae3597d24aa.tar.gz lwn-c0b7373be811307c5ff1de8c8547aae3597d24aa.zip | |
iscsi-target: move iscsit_thread_check_cpumask()
Move iscsit_thread_check_cpumask() to header
file so that ISCSI_HW_OFFLOAD and other transport drivers
can call this function to ensure both tx and rx thread
runs on same cpu.
Signed-off-by: Varun Prakash <varun@chelsio.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'include/target/iscsi')
| -rw-r--r-- | include/target/iscsi/iscsi_target_core.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/target/iscsi/iscsi_target_core.h b/include/target/iscsi/iscsi_target_core.h index c3371fa548cb..01c41f2b66d1 100644 --- a/include/target/iscsi/iscsi_target_core.h +++ b/include/target/iscsi/iscsi_target_core.h @@ -890,4 +890,30 @@ static inline u32 session_get_next_ttt(struct iscsi_session *session) } extern struct iscsi_cmd *iscsit_find_cmd_from_itt(struct iscsi_conn *, itt_t); + +static inline void iscsit_thread_check_cpumask( + struct iscsi_conn *conn, + struct task_struct *p, + int mode) +{ + /* + * mode == 1 signals iscsi_target_tx_thread() usage. + * mode == 0 signals iscsi_target_rx_thread() usage. + */ + if (mode == 1) { + if (!conn->conn_tx_reset_cpumask) + return; + conn->conn_tx_reset_cpumask = 0; + } else { + if (!conn->conn_rx_reset_cpumask) + return; + conn->conn_rx_reset_cpumask = 0; + } + /* + * Update the CPU mask for this single kthread so that + * both TX and RX kthreads are scheduled to run on the + * same CPU. + */ + set_cpus_allowed_ptr(p, conn->conn_cpumask); +} #endif /* ISCSI_TARGET_CORE_H */ |