From 9fd51e9b0ad33a89a83fdbbb66bd20d85f7893fb Mon Sep 17 00:00:00 2001
From: Roland McGrath <roland@gnu.org>
Date: Fri, 4 Feb 2000 03:21:18 +0000
Subject: Import of Linux 2.2.12 subset (ipv4 stack and related)

---
 pfinet/linux-src/include/linux/smp.h | 86 ++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 pfinet/linux-src/include/linux/smp.h

(limited to 'pfinet/linux-src/include/linux/smp.h')

diff --git a/pfinet/linux-src/include/linux/smp.h b/pfinet/linux-src/include/linux/smp.h
new file mode 100644
index 00000000..eae12907
--- /dev/null
+++ b/pfinet/linux-src/include/linux/smp.h
@@ -0,0 +1,86 @@
+#ifndef __LINUX_SMP_H
+#define __LINUX_SMP_H
+
+/*
+ *	Generic SMP support
+ *		Alan Cox. <alan@redhat.com>
+ */
+
+#ifdef __SMP__
+
+#include <asm/smp.h>
+
+/*
+ * main cross-CPU interfaces, handles INIT, TLB flush, STOP, etc.
+ * (defined in asm header):
+ */ 
+
+/*
+ * stops all CPUs but the current one:
+ */
+extern void smp_send_stop(void);
+
+/*
+ * sends a 'reschedule' event to another CPU:
+ */
+extern void FASTCALL(smp_send_reschedule(int cpu));
+
+
+/*
+ * Boot processor call to load the other CPU's
+ */
+extern void smp_boot_cpus(void);
+
+/*
+ * Processor call in. Must hold processors until ..
+ */
+extern void smp_callin(void);
+
+/*
+ * Multiprocessors may now schedule
+ */
+extern void smp_commence(void);
+
+/*
+ * Call a function on all other processors
+ */
+extern int smp_call_function (void (*func) (void *info), void *info,
+			      int retry, int wait);
+
+/*
+ * True once the per process idle is forked
+ */
+extern int smp_threads_ready;
+
+extern int smp_num_cpus;
+
+extern volatile unsigned long smp_msg_data;
+extern volatile int smp_src_cpu;
+extern volatile int smp_msg_id;
+
+#define MSG_ALL_BUT_SELF	0x8000	/* Assume <32768 CPU's */
+#define MSG_ALL			0x8001
+
+#define MSG_INVALIDATE_TLB	0x0001	/* Remote processor TLB invalidate */
+#define MSG_STOP_CPU		0x0002	/* Sent to shut down slave CPU's
+					 * when rebooting
+					 */
+#define MSG_RESCHEDULE		0x0003	/* Reschedule request from master CPU*/
+#define MSG_CALL_FUNCTION       0x0004  /* Call function on all other CPUs */
+
+#else
+
+/*
+ *	These macros fold the SMP functionality into a single CPU system
+ */
+ 
+#define smp_num_cpus				1
+#define smp_processor_id()			0
+#define hard_smp_processor_id()			0
+#define smp_threads_ready			1
+#define kernel_lock()
+#define cpu_logical_map(cpu)			0
+#define smp_call_function(func,info,retry,wait)
+
+#endif
+#endif
-- 
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