[SPARC64]: Pass multiple CPUs at once to hypervisor cross-call API.
David S. Miller [Tue, 21 Feb 2006 21:59:47 +0000 (13:59 -0800)]
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc64/kernel/smp.c

index b586345..356d423 100644 (file)
@@ -557,7 +557,6 @@ retry:
        }
 }
 
-#if 0
 /* Multi-cpu list version.  */
 static int init_cpu_list(u16 *list, cpumask_t mask)
 {
@@ -631,59 +630,6 @@ static void hypervisor_xcall_deliver(u64 data0, u64 data1, u64 data2, cpumask_t
 
        put_cpu();
 }
-#else
-/* Single-cpu list version.  */
-static void hypervisor_xcall_deliver(u64 data0, u64 data1, u64 data2, cpumask_t mask)
-{
-       int this_cpu = get_cpu();
-       struct trap_per_cpu *tb = &trap_block[this_cpu];
-       u64 *mondo = __va(tb->cpu_mondo_block_pa);
-       u16 *cpu_list = __va(tb->cpu_list_pa);
-       int i;
-
-       mondo[0] = data0;
-       mondo[1] = data1;
-       mondo[2] = data2;
-       wmb();
-
-       for_each_cpu_mask(i, mask) {
-               int retries = 0;
-
-               do {
-                       register unsigned long func __asm__("%o5");
-                       register unsigned long arg0 __asm__("%o0");
-                       register unsigned long arg1 __asm__("%o1");
-                       register unsigned long arg2 __asm__("%o2");
-
-                       cpu_list[0] = i;
-                       func = HV_FAST_CPU_MONDO_SEND;
-                       arg0 = 1;
-                       arg1 = tb->cpu_list_pa;
-                       arg2 = tb->cpu_mondo_block_pa;
-
-                       __asm__ __volatile__("ta        %8"
-                                            : "=&r" (func), "=&r" (arg0),
-                                              "=&r" (arg1), "=&r" (arg2)
-                                            : "0" (func), "1" (arg0),
-                                              "2" (arg1), "3" (arg2),
-                                              "i" (HV_FAST_TRAP)
-                                            : "memory");
-                       if (likely(arg0 == HV_EOK))
-                               break;
-
-                       if (unlikely(++retries > 100)) {
-                               printk("CPU[%d]: sun4v mondo error %lu\n",
-                                      this_cpu, func);
-                               break;
-                       }
-
-                       udelay(2 * i);
-               } while (1);
-       }
-
-       put_cpu();
-}
-#endif
 
 /* Send cross call to all processors mentioned in MASK
  * except self.