---

yaml
---
r: 5181
b: refs/heads/master
c: 99b2d8d
h: refs/heads/master
i:
  5179: 4b69546
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 46ee058cdb3abab9313cc9cb9e9927d7672a718c
+refs/heads/master: 99b2d8df1d06f1072a949fc1e01a08b94b084d5f

trunk/arch/s390/kernel/head.S

@@ -765,7 +765,7 @@ _stext:	basr  %r13,0                    # get base
 
 # check control registers
         stctl  %c0,%c15,0(%r15)
-	oi     2(%r15),0x20             # enable sigp external interrupts
+	oi     2(%r15),0x40             # enable sigp emergency signal
 	oi     0(%r15),0x10             # switch on low address protection
         lctl   %c0,%c15,0(%r15)
 

trunk/arch/s390/kernel/head64.S

@@ -762,7 +762,7 @@ _stext:	basr  %r13,0                    # get base
 
 # check control registers
         stctg  %c0,%c15,0(%r15)
-	oi     6(%r15),0x20             # enable sigp external interrupts
+	oi     6(%r15),0x40             # enable sigp emergency signal
 	oi     4(%r15),0x10             # switch on low address proctection
         lctlg  %c0,%c15,0(%r15)
 

trunk/arch/s390/kernel/s390_ext.c

@@ -19,14 +19,18 @@
 #include <asm/irq.h>
 
 /*
- * Simple hash strategy: index = code & 0xff;
  * ext_int_hash[index] is the start of the list for all external interrupts
  * that hash to this index. With the current set of external interrupts 
  * (0x1202 external call, 0x1004 cpu timer, 0x2401 hwc console, 0x4000
  * iucv and 0x2603 pfault) this is always the first element. 
  */
 ext_int_info_t *ext_int_hash[256] = { 0, };
 
+static inline int ext_hash(__u16 code)
+{
+	return (code + (code >> 9)) & 0xff;
+}
+
 int register_external_interrupt(__u16 code, ext_int_handler_t handler)
 {
         ext_int_info_t *p;
@@ -37,7 +41,7 @@ int register_external_interrupt(__u16 code, ext_int_handler_t handler)
                 return -ENOMEM;
         p->code = code;
         p->handler = handler;
-        index = code & 0xff;
+	index = ext_hash(code);
         p->next = ext_int_hash[index];
         ext_int_hash[index] = p;
         return 0;
@@ -52,7 +56,7 @@ int register_early_external_interrupt(__u16 code, ext_int_handler_t handler,
                 return -EINVAL;
         p->code = code;
         p->handler = handler;
-        index = code & 0xff;
+	index = ext_hash(code);
         p->next = ext_int_hash[index];
         ext_int_hash[index] = p;
         return 0;
@@ -63,7 +67,7 @@ int unregister_external_interrupt(__u16 code, ext_int_handler_t handler)
         ext_int_info_t *p, *q;
         int index;
 
-        index = code & 0xff;
+	index = ext_hash(code);
         q = NULL;
         p = ext_int_hash[index];
         while (p != NULL) {
@@ -90,7 +94,7 @@ int unregister_early_external_interrupt(__u16 code, ext_int_handler_t handler,
 
 	if (p == NULL || p->code != code || p->handler != handler)
 		return -EINVAL;
-	index = code & 0xff;
+	index = ext_hash(code);
 	q = ext_int_hash[index];
 	if (p != q) {
 		while (q != NULL) {
@@ -120,7 +124,7 @@ void do_extint(struct pt_regs *regs, unsigned short code)
 		 */
 		account_ticks(regs);
 	kstat_cpu(smp_processor_id()).irqs[EXTERNAL_INTERRUPT]++;
-        index = code & 0xff;
+        index = ext_hash(code);
 	for (p = ext_int_hash[index]; p; p = p->next) {
 		if (likely(p->code == code)) {
 			if (likely(p->handler))

trunk/arch/s390/kernel/smp.c

@@ -375,7 +375,7 @@ static void smp_ext_bitcall(int cpu, ec_bit_sig sig)
          * Set signaling bit in lowcore of target cpu and kick it
          */
 	set_bit(sig, (unsigned long *) &lowcore_ptr[cpu]->ext_call_fast);
-	while(signal_processor(cpu, sigp_external_call) == sigp_busy)
+	while(signal_processor(cpu, sigp_emergency_signal) == sigp_busy)
 		udelay(10);
 }
 
@@ -394,7 +394,7 @@ static void smp_ext_bitcall_others(ec_bit_sig sig)
                  * Set signaling bit in lowcore of target cpu and kick it
                  */
 		set_bit(sig, (unsigned long *) &lowcore_ptr[cpu]->ext_call_fast);
-		while (signal_processor(cpu, sigp_external_call) == sigp_busy)
+		while (signal_processor(cpu, sigp_emergency_signal) == sigp_busy)
 			udelay(10);
         }
 }
@@ -751,9 +751,9 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 	unsigned int cpu;
         int i;
 
-        /* request the 0x1202 external interrupt */
-        if (register_external_interrupt(0x1202, do_ext_call_interrupt) != 0)
-                panic("Couldn't request external interrupt 0x1202");
+        /* request the 0x1201 emergency signal external interrupt */
+        if (register_external_interrupt(0x1201, do_ext_call_interrupt) != 0)
+                panic("Couldn't request external interrupt 0x1201");
         smp_check_cpus(max_cpus);
         memset(lowcore_ptr,0,sizeof(lowcore_ptr));  
         /*