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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>
This commit is contained in:
Varun Prakash 2016-04-20 00:00:14 +05:30 committed by Nicholas Bellinger
parent 8567270d8d
commit c0b7373be8
2 changed files with 26 additions and 26 deletions
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26
drivers/target/iscsi/iscsi_target.c
View File

@ -3580,32 +3580,6 @@ void iscsit_thread_get_cpumask(struct iscsi_conn *conn)
cpumask_setall(conn->conn_cpumask);
}
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);
}
static int
iscsit_immediate_queue(struct iscsi_conn *conn, struct iscsi_cmd *cmd, int state)
{

26
include/target/iscsi/iscsi_target_core.h
View File

@ -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 */