/*
* This thread is responsible for nearly all of the partition
* activation/deactivation.
*/
static int
xpc_hb_checker(void *ignore)
{
int force_IRQ = 0;
/* this thread was marked active by xpc_hb_init() */
set_cpus_allowed_ptr(current, cpumask_of(XPC_HB_CHECK_CPU));
/* set our heartbeating to other partitions into motion */
xpc_hb_check_timeout = jiffies + (xpc_hb_check_interval * HZ);
xpc_start_hb_beater();
while (!xpc_exiting) {
dev_dbg(xpc_part, "woke up with %d ticks rem; %d IRQs have "
"been received\n",
(int)(xpc_hb_check_timeout - jiffies),
xpc_activate_IRQ_rcvd);
/* checking of remote heartbeats is skewed by IRQ handling */
if (time_is_before_eq_jiffies(xpc_hb_check_timeout)) {
xpc_hb_check_timeout = jiffies +
(xpc_hb_check_interval * HZ);
dev_dbg(xpc_part, "checking remote heartbeats\n");
xpc_check_remote_hb();
/*
* On sn2 we need to periodically recheck to ensure no
* IRQ/amo pairs have been missed.
*/
if (is_shub())
force_IRQ = 1;
}
/* check for outstanding IRQs */
if (xpc_activate_IRQ_rcvd > 0 || force_IRQ != 0) {
force_IRQ = 0;
dev_dbg(xpc_part, "processing activate IRQs "
"received\n");
xpc_process_activate_IRQ_rcvd();
}
/* wait for IRQ or timeout */
(void)wait_event_interruptible(xpc_activate_IRQ_wq,
(time_is_before_eq_jiffies(
xpc_hb_check_timeout) ||
xpc_activate_IRQ_rcvd > 0 ||
xpc_exiting));
}
xpc_stop_hb_beater();
dev_dbg(xpc_part, "heartbeat checker is exiting\n");
/* mark this thread as having exited */
complete(&xpc_hb_checker_exited);
return 0;
}
static int
xpc_hb_checker(void *ignore)
{
int force_IRQ = 0;
/* */
set_cpus_allowed_ptr(current, cpumask_of(XPC_HB_CHECK_CPU));
/* */
xpc_hb_check_timeout = jiffies + (xpc_hb_check_interval * HZ);
xpc_start_hb_beater();
while (!xpc_exiting) {
dev_dbg(xpc_part, "woke up with %d ticks rem; %d IRQs have "
"been received\n",
(int)(xpc_hb_check_timeout - jiffies),
xpc_activate_IRQ_rcvd);
/* */
if (time_is_before_eq_jiffies(xpc_hb_check_timeout)) {
xpc_hb_check_timeout = jiffies +
(xpc_hb_check_interval * HZ);
dev_dbg(xpc_part, "checking remote heartbeats\n");
xpc_check_remote_hb();
/*
*/
if (is_shub())
force_IRQ = 1;
}
/* */
if (xpc_activate_IRQ_rcvd > 0 || force_IRQ != 0) {
force_IRQ = 0;
dev_dbg(xpc_part, "processing activate IRQs "
"received\n");
xpc_arch_ops.process_activate_IRQ_rcvd();
}
/* */
(void)wait_event_interruptible(xpc_activate_IRQ_wq,
(time_is_before_eq_jiffies(
xpc_hb_check_timeout) ||
xpc_activate_IRQ_rcvd > 0 ||
xpc_exiting));
}
xpc_stop_hb_beater();
dev_dbg(xpc_part, "heartbeat checker is exiting\n");
/* */
complete(&xpc_hb_checker_exited);
return 0;
}
