patch-2.4.7 linux/include/asm-mips64/smp.h

• Lines: 61
• Date: Wed Jul 4 11:50:39 2001
• Orig file: v2.4.6/linux/include/asm-mips64/smp.h
• Orig date: Fri Mar 2 11:30:15 2001

diff -u --recursive --new-file v2.4.6/linux/include/asm-mips64/smp.h linux/include/asm-mips64/smp.h
@@ -1,3 +1,12 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file "COPYING" in the main directory of this
+ * archive for more details.
+ *
+ * Copyright (C) 2000 - 2001 by Kanoj Sarcar (kanoj@sgi.com)
+ * Copyright (C) 2000 - 2001 by Silicon Graphics, Inc.
+ */
+
 #ifndef __ASM_SMP_H
 #define __ASM_SMP_H
 
@@ -38,12 +47,42 @@
 extern int __cpu_logical_map[NR_CPUS];
 #define cpu_logical_map(cpu)  __cpu_logical_map[cpu]
 
-/* Good enough for toy^Wupto 64 CPU Origins.  */
-extern unsigned long cpu_present_mask;
-#define cpu_online_map cpu_present_mask
-
 #endif
 
 #define NO_PROC_ID	(-1)
 
-#endif __ASM_SMP_H
+#if (NR_CPUS <= _MIPS_SZLONG)
+
+typedef unsigned long   cpumask_t;
+
+#define CPUMASK_CLRALL(p)	(p) = 0
+#define CPUMASK_SETB(p, bit)	(p) |= 1 << (bit)
+#define CPUMASK_CLRB(p, bit)	(p) &= ~(1ULL << (bit))
+#define CPUMASK_TSTB(p, bit)	((p) & (1ULL << (bit)))
+
+#elif (NR_CPUS <= 128)
+
+/*
+ * The foll should work till 128 cpus.
+ */
+#define CPUMASK_SIZE		(NR_CPUS/_MIPS_SZLONG)
+#define CPUMASK_INDEX(bit)	((bit) >> 6)
+#define CPUMASK_SHFT(bit)	((bit) & 0x3f)
+
+typedef struct {
+	unsigned long	_bits[CPUMASK_SIZE];
+} cpumask_t;
+
+#define	CPUMASK_CLRALL(p)	(p)._bits[0] = 0, (p)._bits[1] = 0
+#define CPUMASK_SETB(p, bit)	(p)._bits[CPUMASK_INDEX(bit)] |= \
+					(1ULL << CPUMASK_SHFT(bit))
+#define CPUMASK_CLRB(p, bit)	(p)._bits[CPUMASK_INDEX(bit)] &= \
+					~(1ULL << CPUMASK_SHFT(bit))
+#define CPUMASK_TSTB(p, bit)	((p)._bits[CPUMASK_INDEX(bit)] & \
+					(1ULL << CPUMASK_SHFT(bit)))
+
+#else
+#error cpumask macros only defined for 128p kernels
+#endif
+
+#endif /* __ASM_SMP_H */