Merge branch 'linus' into oprofile-v2

[karo-tx-linux.git] / arch / x86 / kernel / apic_64.c

diff --git a/arch/x86/kernel/apic_64.c b/arch/x86/kernel/apic_64.c
index a9ad2cb4ff95432263e7fbd4530c1b17f060ba78..94ddb69ae15e55f39d195267f73bfbdfa346377d 100644 (file)
--- a/arch/x86/kernel/apic_64.c
+++ b/arch/x86/kernel/apic_64.c
@@ -98,7 +98,6 @@ static struct clock_event_device lapic_clockevent = {
 static DEFINE_PER_CPU(struct clock_event_device, lapic_events);
 
 static unsigned long apic_phys;
-unsigned int __cpuinitdata maxcpus = NR_CPUS;
 
 unsigned long mp_lapic_addr;
 
@@ -308,6 +307,9 @@ static void __setup_APIC_LVTT(unsigned int clocks, int oneshot, int irqen)
  *
  * Vector mappings are hard coded. On K8 only offset 0 (APIC500) and
  * MCE interrupts are supported. Thus MCE offset must be set to 0.
+ *
+ * If mask=1, the LVT entry does not generate interrupts while mask=0
+ * enables the vector. See also the BKDGs.
  */
 
 #define APIC_EILVT_LVTOFF_MCE 0
@@ -332,6 +334,7 @@ u8 setup_APIC_eilvt_ibs(u8 vector, u8 msg_type, u8 mask)
        setup_APIC_eilvt(APIC_EILVT_LVTOFF_IBS, vector, msg_type, mask);
        return APIC_EILVT_LVTOFF_IBS;
 }
+EXPORT_SYMBOL_GPL(setup_APIC_eilvt_ibs);
 
 /*
  * Program the next event, relative to now
@@ -1020,11 +1023,13 @@ void __cpuinit end_local_APIC_setup(void)
        lapic_setup_esr();
 
 #ifdef CONFIG_X86_32
-       unsigned int value;
-       /* Disable the local apic timer */
-       value = apic_read(APIC_LVTT);
-       value |= (APIC_LVT_MASKED | LOCAL_TIMER_VECTOR);
-       apic_write(APIC_LVTT, value);
+       {
+               unsigned int value;
+               /* Disable the local apic timer */
+               value = apic_read(APIC_LVTT);
+               value |= (APIC_LVT_MASKED | LOCAL_TIMER_VECTOR);
+               apic_write(APIC_LVTT, value);
+       }
 #endif
 
        setup_apic_nmi_watchdog(NULL);
@@ -1363,6 +1368,8 @@ void __init connect_bsp_APIC(void)
  */
 void disconnect_bsp_APIC(int virt_wire_setup)
 {
+       unsigned int value;
+
 #ifdef CONFIG_X86_32
        if (pic_mode) {
                /*
@@ -1380,7 +1387,6 @@ void disconnect_bsp_APIC(int virt_wire_setup)
 #endif
 
        /* Go back to Virtual Wire compatibility mode */
-       unsigned int value;
 
        /* For the spurious interrupt use vector F, and enable it */
        value = apic_read(APIC_SPIV);
@@ -1441,12 +1447,6 @@ void __cpuinit generic_processor_info(int apicid, int version)
                return;
        }
 
-       if (num_processors >= maxcpus) {
-               printk(KERN_WARNING "WARNING: maxcpus limit of %i reached."
-                       " Processor ignored.\n", maxcpus);
-               return;
-       }
-
        num_processors++;
        cpus_complement(tmp_map, cpu_present_map);
        cpu = first_cpu(tmp_map);
@@ -1759,28 +1759,7 @@ early_param("nox2apic", setup_nox2apic);
 /*
  * APIC command line parameters
  */
-static int __init apic_set_verbosity(char *str)
-{
-       if (str == NULL)  {
-               skip_ioapic_setup = 0;
-               ioapic_force = 1;
-               return 0;
-       }
-       if (strcmp("debug", str) == 0)
-               apic_verbosity = APIC_DEBUG;
-       else if (strcmp("verbose", str) == 0)
-               apic_verbosity = APIC_VERBOSE;
-       else {
-               printk(KERN_WARNING "APIC Verbosity level %s not recognised"
-                               " use apic=verbose or apic=debug\n", str);
-               return -EINVAL;
-       }
-
-       return 0;
-}
-early_param("apic", apic_set_verbosity);
-
-static __init int setup_disableapic(char *str)
+static int __init setup_disableapic(char *arg)
 {
        disable_apic = 1;
        setup_clear_cpu_cap(X86_FEATURE_APIC);
@@ -1789,9 +1768,9 @@ static __init int setup_disableapic(char *str)
 early_param("disableapic", setup_disableapic);
 
 /* same as disableapic, for compatibility */
-static __init int setup_nolapic(char *str)
+static int __init setup_nolapic(char *arg)
 {
-       return setup_disableapic(str);
+       return setup_disableapic(arg);
 }
 early_param("nolapic", setup_nolapic);
 
@@ -1824,6 +1803,31 @@ static __init int setup_apicpmtimer(char *s)
 }
 __setup("apicpmtimer", setup_apicpmtimer);
 
+static int __init apic_set_verbosity(char *arg)
+{
+       if (!arg)  {
+#ifdef CONFIG_X86_64
+               skip_ioapic_setup = 0;
+               ioapic_force = 1;
+               return 0;
+#endif
+               return -EINVAL;
+       }
+
+       if (strcmp("debug", arg) == 0)
+               apic_verbosity = APIC_DEBUG;
+       else if (strcmp("verbose", arg) == 0)
+               apic_verbosity = APIC_VERBOSE;
+       else {
+               printk(KERN_WARNING "APIC Verbosity level %s not recognised"
+                       " use apic=verbose or apic=debug\n", arg);
+               return -EINVAL;
+       }
+
+       return 0;
+}
+early_param("apic", apic_set_verbosity);
+
 static int __init lapic_insert_resource(void)
 {
        if (!apic_phys)