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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-alpha/smp.h
downloadop-kernel-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip
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Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-alpha/smp.h')
-rw-r--r--include/asm-alpha/smp.h63
1 files changed, 63 insertions, 0 deletions
diff --git a/include/asm-alpha/smp.h b/include/asm-alpha/smp.h
new file mode 100644
index 0000000..cbc173a
--- /dev/null
+++ b/include/asm-alpha/smp.h
@@ -0,0 +1,63 @@
+#ifndef __ASM_SMP_H
+#define __ASM_SMP_H
+
+#include <linux/config.h>
+#include <linux/threads.h>
+#include <linux/cpumask.h>
+#include <linux/bitops.h>
+#include <asm/pal.h>
+
+/* HACK: Cabrio WHAMI return value is bogus if more than 8 bits used.. :-( */
+
+static __inline__ unsigned char
+__hard_smp_processor_id(void)
+{
+ register unsigned char __r0 __asm__("$0");
+ __asm__ __volatile__(
+ "call_pal %1 #whami"
+ : "=r"(__r0)
+ :"i" (PAL_whami)
+ : "$1", "$22", "$23", "$24", "$25");
+ return __r0;
+}
+
+#ifdef CONFIG_SMP
+
+#include <asm/irq.h>
+
+struct cpuinfo_alpha {
+ unsigned long loops_per_jiffy;
+ unsigned long last_asn;
+ int need_new_asn;
+ int asn_lock;
+ unsigned long ipi_count;
+ unsigned long prof_multiplier;
+ unsigned long prof_counter;
+ unsigned char mcheck_expected;
+ unsigned char mcheck_taken;
+ unsigned char mcheck_extra;
+} __attribute__((aligned(64)));
+
+extern struct cpuinfo_alpha cpu_data[NR_CPUS];
+
+#define PROC_CHANGE_PENALTY 20
+
+#define hard_smp_processor_id() __hard_smp_processor_id()
+#define smp_processor_id() (current_thread_info()->cpu)
+
+extern cpumask_t cpu_present_mask;
+extern cpumask_t cpu_online_map;
+extern int smp_num_cpus;
+#define cpu_possible_map cpu_present_mask
+
+int smp_call_function_on_cpu(void (*func) (void *info), void *info,int retry, int wait, cpumask_t cpu);
+
+#else /* CONFIG_SMP */
+
+#define smp_call_function_on_cpu(func,info,retry,wait,cpu) ({ 0; })
+
+#endif /* CONFIG_SMP */
+
+#define NO_PROC_ID (-1)
+
+#endif
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