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Diffstat (limited to 'arch/x86/kernel/reboot.c')
-rw-r--r--arch/x86/kernel/reboot.c111
1 files changed, 3 insertions, 108 deletions
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index f7703401d6cb..563ed91e6faa 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -36,22 +36,6 @@ void (*pm_power_off)(void);
EXPORT_SYMBOL(pm_power_off);
static const struct desc_ptr no_idt = {};
-static enum reboot_mode reboot_mode;
-enum reboot_type reboot_type = BOOT_ACPI;
-int reboot_force;
-
-/*
- * This variable is used privately to keep track of whether or not
- * reboot_type is still set to its default value (i.e., reboot= hasn't
- * been set on the command line). This is needed so that we can
- * suppress DMI scanning for reboot quirks. Without it, it's
- * impossible to override a faulty reboot quirk without recompiling.
- */
-static int reboot_default = 1;
-
-#ifdef CONFIG_SMP
-static int reboot_cpu = -1;
-#endif
/*
* This is set if we need to go through the 'emergency' path.
@@ -64,79 +48,6 @@ static int reboot_emergency;
bool port_cf9_safe = false;
/*
- * reboot=b[ios] | s[mp] | t[riple] | k[bd] | e[fi] [, [w]arm | [c]old] | p[ci]
- * warm Don't set the cold reboot flag
- * cold Set the cold reboot flag
- * bios Reboot by jumping through the BIOS
- * smp Reboot by executing reset on BSP or other CPU
- * triple Force a triple fault (init)
- * kbd Use the keyboard controller. cold reset (default)
- * acpi Use the RESET_REG in the FADT
- * efi Use efi reset_system runtime service
- * pci Use the so-called "PCI reset register", CF9
- * force Avoid anything that could hang.
- */
-static int __init reboot_setup(char *str)
-{
- for (;;) {
- /*
- * Having anything passed on the command line via
- * reboot= will cause us to disable DMI checking
- * below.
- */
- reboot_default = 0;
-
- switch (*str) {
- case 'w':
- reboot_mode = REBOOT_WARM;
- break;
-
- case 'c':
- reboot_mode = REBOOT_COLD;
- break;
-
-#ifdef CONFIG_SMP
- case 's':
- if (isdigit(*(str+1))) {
- reboot_cpu = (int) (*(str+1) - '0');
- if (isdigit(*(str+2)))
- reboot_cpu = reboot_cpu*10 + (int)(*(str+2) - '0');
- }
- /*
- * We will leave sorting out the final value
- * when we are ready to reboot, since we might not
- * have detected BSP APIC ID or smp_num_cpu
- */
- break;
-#endif /* CONFIG_SMP */
-
- case 'b':
- case 'a':
- case 'k':
- case 't':
- case 'e':
- case 'p':
- reboot_type = *str;
- break;
-
- case 'f':
- reboot_force = 1;
- break;
- }
-
- str = strchr(str, ',');
- if (str)
- str++;
- else
- break;
- }
- return 1;
-}
-
-__setup("reboot=", reboot_setup);
-
-
-/*
* Reboot options and system auto-detection code provided by
* Dell Inc. so their systems "just work". :-)
*/
@@ -616,26 +527,10 @@ void native_machine_shutdown(void)
{
/* Stop the cpus and apics */
#ifdef CONFIG_SMP
-
- /* The boot cpu is always logical cpu 0 */
- int reboot_cpu_id = 0;
-
- /* See if there has been given a command line override */
- if ((reboot_cpu != -1) && (reboot_cpu < nr_cpu_ids) &&
- cpu_online(reboot_cpu))
- reboot_cpu_id = reboot_cpu;
-
- /* Make certain the cpu I'm about to reboot on is online */
- if (!cpu_online(reboot_cpu_id))
- reboot_cpu_id = smp_processor_id();
-
- /* Make certain I only run on the appropriate processor */
- set_cpus_allowed_ptr(current, cpumask_of(reboot_cpu_id));
-
/*
- * O.K Now that I'm on the appropriate processor, stop all of the
- * others. Also disable the local irq to not receive the per-cpu
- * timer interrupt which may trigger scheduler's load balance.
+ * Stop all of the others. Also disable the local irq to
+ * not receive the per-cpu timer interrupt which may trigger
+ * scheduler's load balance.
*/
local_irq_disable();
stop_other_cpus();