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authorDavid S. Miller <davem@davemloft.net>2005-08-29 22:46:43 -0700
committerDavid S. Miller <davem@davemloft.net>2005-08-29 22:46:43 -0700
commitd7ce78fd9a51ca0d6b9a8cf35baef884ddb9a95c (patch)
treed7103663f1b5262d7a90f9d99e0c2af611ad07c9
parent826509f8110049663799bc20f2b5b6170e2f78ca (diff)
downloadop-kernel-dev-d7ce78fd9a51ca0d6b9a8cf35baef884ddb9a95c.zip
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[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>
-rw-r--r--arch/sparc64/kernel/rtrap.S13
-rw-r--r--arch/sparc64/kernel/setup.c12
-rw-r--r--include/asm-sparc64/cpudata.h4
-rw-r--r--include/asm-sparc64/hardirq.h16
4 files changed, 15 insertions, 30 deletions
diff --git a/arch/sparc64/kernel/rtrap.S b/arch/sparc64/kernel/rtrap.S
index 0696ed4..fafd227 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 fbdfed3..ddbed33 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 cc7198a..9a3a81f 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 d6db1ae..f0cf713 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
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