#include "local.h"
+#ifdef CONFIG_SMP
+#ifdef CONFIG_HOTPLUG_CPU
+#define DEFAULT_SEND_IPI (1)
+#else
+#define DEFAULT_SEND_IPI (0)
+#endif
+
+static int apic_ipi_shorthand_off __ro_after_init = DEFAULT_SEND_IPI;
+
+static __init int apic_ipi_shorthand(char *str)
+{
+ get_option(&str, &apic_ipi_shorthand_off);
+ return 1;
+}
+__setup("no_ipi_broadcast=", apic_ipi_shorthand);
+
+static int __init print_ipi_mode(void)
+{
+ pr_info("IPI shorthand broadcast: %s\n",
+ apic_ipi_shorthand_off ? "disabled" : "enabled");
+ return 0;
+}
+late_initcall(print_ipi_mode);
+#endif
+
static inline int __prepare_ICR2(unsigned int mask)
{
return SET_APIC_DEST_FIELD(mask);
if (num_online_cpus() < 2)
return;
- if (no_broadcast || vector == NMI_VECTOR) {
+ if (apic_ipi_shorthand_off || vector == NMI_VECTOR) {
apic->send_IPI_mask_allbutself(cpu_online_mask, vector);
} else {
__default_send_IPI_shortcut(APIC_DEST_ALLBUT, vector);
void default_send_IPI_all(int vector)
{
- if (no_broadcast || vector == NMI_VECTOR) {
+ if (apic_ipi_shorthand_off || vector == NMI_VECTOR) {
apic->send_IPI_mask(cpu_online_mask, vector);
} else {
__default_send_IPI_shortcut(APIC_DEST_ALLINC, vector);
void default_send_IPI_mask_sequence_phys(const struct cpumask *mask, int vector);
void default_send_IPI_mask_allbutself_phys(const struct cpumask *mask, int vector);
-extern int no_broadcast;
-
#ifdef CONFIG_X86_32
void default_send_IPI_mask_sequence_logical(const struct cpumask *mask, int vector);
void default_send_IPI_mask_allbutself_logical(const struct cpumask *mask, int vector);
#include "local.h"
-#ifdef CONFIG_HOTPLUG_CPU
-#define DEFAULT_SEND_IPI (1)
-#else
-#define DEFAULT_SEND_IPI (0)
-#endif
-
-int no_broadcast = DEFAULT_SEND_IPI;
-
-static __init int no_ipi_broadcast(char *str)
-{
- get_option(&str, &no_broadcast);
- pr_info("Using %s mode\n",
- no_broadcast ? "No IPI Broadcast" : "IPI Broadcast");
- return 1;
-}
-__setup("no_ipi_broadcast=", no_ipi_broadcast);
-
-static int __init print_ipi_mode(void)
-{
- pr_info("Using IPI %s mode\n",
- no_broadcast ? "No-Shortcut" : "Shortcut");
- return 0;
-}
-late_initcall(print_ipi_mode);
-
static int default_x86_32_early_logical_apicid(int cpu)
{
return 1 << cpu;