[SPARC64]: Eliminate irq_cpustat_t.

We can put the __softirq_pending mask in the cpudata,
no need for the silly NR_CPUS array in kernel/softirq.c

Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 15 insertions, 30 deletions

diff --git a/arch/sparc64/kernel/rtrap.S b/arch/sparc64/kernel/rtrap.S
index 0696ed4b9d64..fafd227735fa 100644
--- a/arch/sparc64/kernel/rtrap.S
+++ b/arch/sparc64/kernel/rtrap.S
@@ -153,11 +153,14 @@ __handle_signal:
 rtrap_irq:
 rtrap_clr_l6:   clr                     %l6
 rtrap:
-                ldub                    [%g6 + TI_CPU], %l0
-                sethi                   %hi(irq_stat), %l2      ! &softirq_active
-                or                      %l2, %lo(irq_stat), %l2 ! &softirq_active
-irqsz_patchme:  sllx                    %l0, 0, %l0
-                lduw                    [%l2 + %l0], %l1        ! softirq_pending
+#ifndef CONFIG_SMP
+                sethi                   %hi(per_cpu____cpu_data), %l0
+                lduw                    [%l0 + %lo(per_cpu____cpu_data)], %l1
+#else
+                sethi                   %hi(per_cpu____cpu_data), %l0
+                or                      %l0, %lo(per_cpu____cpu_data), %l0
+                lduw                    [%l0 + %g5], %l1
+#endif
                 cmp                     %l1, 0
 
                 /* mm/ultra.S:xcall_report_regs KNOWS about this load. */
diff --git a/arch/sparc64/kernel/setup.c b/arch/sparc64/kernel/setup.c
index fbdfed3798d8..ddbed3341a23 100644
--- a/arch/sparc64/kernel/setup.c
+++ b/arch/sparc64/kernel/setup.c
@@ -511,18 +511,6 @@ void __init setup_arch(char **cmdline_p)
         conswitchp = &prom_con;
 #endif
 
-#ifdef CONFIG_SMP
-        i = (unsigned long)&irq_stat[1] - (unsigned long)&irq_stat[0];
-        if ((i == SMP_CACHE_BYTES) || (i == (2 * SMP_CACHE_BYTES))) {
-                extern unsigned int irqsz_patchme[1];
-                irqsz_patchme[0] |= ((i == SMP_CACHE_BYTES) ? SMP_CACHE_BYTES_SHIFT : \
-                                                        SMP_CACHE_BYTES_SHIFT + 1);
-                flushi((long)&irqsz_patchme[0]);
-        } else {
-                prom_printf("Unexpected size of irq_stat[] elements\n");
-                prom_halt();
-        }
-#endif
         /* Work out if we are starfire early on */
         check_if_starfire();
 
diff --git a/include/asm-sparc64/cpudata.h b/include/asm-sparc64/cpudata.h
index cc7198aaac50..9a3a81f1cc58 100644
--- a/include/asm-sparc64/cpudata.h
+++ b/include/asm-sparc64/cpudata.h
@@ -1,6 +1,6 @@
 /* cpudata.h: Per-cpu parameters.
  *
- * Copyright (C) 2003 David S. Miller (davem@redhat.com)
+ * Copyright (C) 2003, 2005 David S. Miller (davem@redhat.com)
  */
 
 #ifndef _SPARC64_CPUDATA_H
@@ -10,7 +10,7 @@
 
 typedef struct {
         /* Dcache line 1 */
-        unsigned int    __pad0;         /* bh_count moved to irq_stat for consistency. KAO */
+        unsigned int    __softirq_pending; /* must be 1st, see rtrap.S */
         unsigned int    multiplier;
         unsigned int    counter;
         unsigned int    idle_volume;
diff --git a/include/asm-sparc64/hardirq.h b/include/asm-sparc64/hardirq.h
index d6db1aed7645..f0cf71376ec5 100644
--- a/include/asm-sparc64/hardirq.h
+++ b/include/asm-sparc64/hardirq.h
@@ -1,22 +1,16 @@
 /* hardirq.h: 64-bit Sparc hard IRQ support.
  *
- * Copyright (C) 1997, 1998 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1997, 1998, 2005 David S. Miller (davem@davemloft.net)
  */
 
 #ifndef __SPARC64_HARDIRQ_H
 #define __SPARC64_HARDIRQ_H
 
-#include <linux/config.h>
-#include <linux/threads.h>
-#include <linux/spinlock.h>
-#include <linux/cache.h>
+#include <asm/cpudata.h>
 
-/* rtrap.S is sensitive to the offsets of these fields */
-typedef struct {
-        unsigned int __softirq_pending;
-} ____cacheline_aligned irq_cpustat_t;
-
-#include <linux/irq_cpustat.h>  /* Standard mappings for irq_cpustat_t above */
+#define __ARCH_IRQ_STAT
+#define local_softirq_pending() \
+        (local_cpu_data().__softirq_pending)
 
 #define HARDIRQ_BITS    8