/*
* platform_cpu_die: shutdown a CPU
* @cpu:
*/
void platform_cpu_die(unsigned int cpu)
{
int spurious = 0;
struct wd_api *wd_api = NULL;
HOTPLUG_INFO("platform_cpu_die, cpu: %d\n", cpu);
get_wd_api(&wd_api);
if (wd_api)
wd_api->wd_cpu_hot_plug_off_notify(cpu);
#ifdef CONFIG_MTK_SCHED_TRACERS
trace_cpu_hotplug(cpu, 0, per_cpu(last_event_ts, cpu));
per_cpu(last_event_ts, cpu) = ns2usecs(ftrace_now(cpu));
#endif
/*
* we're ready for shutdown now, so do it
*/
cpu_enter_lowpower(cpu);
platform_do_lowpower(cpu, &spurious);
/*
* bring this CPU back into the world of cache
* coherency, and then restore interrupts
*/
cpu_leave_lowpower(cpu);
if (spurious)
HOTPLUG_INFO("platform_do_lowpower, spurious wakeup call, cpu: %d, spurious: %d\n", cpu, spurious);
}
static int kplib_print_trace_clock(ktap_state_t *ks)
{
unsigned long long t;
unsigned long secs, usec_rem;
u64 timestamp;
/* use ring buffer's timestamp */
timestamp = ring_buffer_time_stamp(G(ks)->buffer, smp_processor_id());
t = ns2usecs(timestamp);
usec_rem = do_div(t, USEC_PER_SEC);
secs = (unsigned long)t;
kp_printf(ks, "%5lu.%06lu\n", secs, usec_rem);
return 0;
}
