#include <linux/kernel.h>
#include <linux/kallsyms.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/smp.h>
#include <linux/stddef.h>
#include <linux/ptrace.h>
#include <linux/compat.h>
#include <linux/tick.h>
#include <linux/init.h>
+#include <linux/cpu.h>
#include <asm/oplib.h>
#include <asm/uaccess.h>
#include <asm/mmu_context.h>
#include <asm/unistd.h>
#include <asm/hypervisor.h>
+#include <asm/sstate.h>
/* #define VERBOSE_SHOWREGS */
-static void sparc64_yield(void)
+static void sparc64_yield(int cpu)
{
if (tlb_type != hypervisor)
return;
clear_thread_flag(TIF_POLLING_NRFLAG);
smp_mb__after_clear_bit();
- while (!need_resched()) {
+ while (!need_resched() && !cpu_is_offline(cpu)) {
unsigned long pstate;
/* Disable interrupts. */
: "=&r" (pstate)
: "i" (PSTATE_IE));
- if (!need_resched())
+ if (!need_resched() && !cpu_is_offline(cpu))
sun4v_cpu_yield();
/* Re-enable interrupts. */
/* The idle loop on sparc64. */
void cpu_idle(void)
{
+ int cpu = smp_processor_id();
+
set_thread_flag(TIF_POLLING_NRFLAG);
while(1) {
tick_nohz_stop_sched_tick();
- while (!need_resched())
- sparc64_yield();
+
+ while (!need_resched() && !cpu_is_offline(cpu))
+ sparc64_yield(cpu);
+
tick_nohz_restart_sched_tick();
preempt_enable_no_resched();
+
+#ifdef CONFIG_HOTPLUG_CPU
+ if (cpu_is_offline(cpu))
+ cpu_play_dead();
+#endif
+
schedule();
preempt_disable();
}
void machine_halt(void)
{
- if (!serial_console && prom_palette)
+ sstate_halt();
+ if (prom_palette)
prom_palette (1);
if (prom_keyboard)
prom_keyboard();
void machine_alt_power_off(void)
{
- if (!serial_console && prom_palette)
+ sstate_poweroff();
+ if (prom_palette)
prom_palette(1);
if (prom_keyboard)
prom_keyboard();
{
char *p;
+ sstate_reboot();
p = strchr (reboot_command, '\n');
if (p) *p = 0;
- if (!serial_console && prom_palette)
+ if (prom_palette)
prom_palette (1);
if (prom_keyboard)
prom_keyboard();
* NOTE! Only a kernel-only process(ie the swapper or direct descendants
* who haven't done an "execve()") should use this: it will work within
* a system call from a "real" process, but the process memory space will
- * not be free'd until both the parent and the child have exited.
+ * not be freed until both the parent and the child have exited.
*/
pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
{