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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-ia64/local.h
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz
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-ia64/local.h')
-rw-r--r--include/asm-ia64/local.h50
1 files changed, 50 insertions, 0 deletions
diff --git a/include/asm-ia64/local.h b/include/asm-ia64/local.h
new file mode 100644
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+++ b/include/asm-ia64/local.h
@@ -0,0 +1,50 @@
+#ifndef _ASM_IA64_LOCAL_H
+#define _ASM_IA64_LOCAL_H
+
+/*
+ * Copyright (C) 2003 Hewlett-Packard Co
+ * David Mosberger-Tang <davidm@hpl.hp.com>
+ */
+
+#include <linux/percpu.h>
+
+typedef struct {
+ atomic64_t val;
+} local_t;
+
+#define LOCAL_INIT(i) ((local_t) { { (i) } })
+#define local_read(l) atomic64_read(&(l)->val)
+#define local_set(l, i) atomic64_set(&(l)->val, i)
+#define local_inc(l) atomic64_inc(&(l)->val)
+#define local_dec(l) atomic64_dec(&(l)->val)
+#define local_add(l) atomic64_add(&(l)->val)
+#define local_sub(l) atomic64_sub(&(l)->val)
+
+/* Non-atomic variants, i.e., preemption disabled and won't be touched in interrupt, etc. */
+
+#define __local_inc(l) (++(l)->val.counter)
+#define __local_dec(l) (--(l)->val.counter)
+#define __local_add(i,l) ((l)->val.counter += (i))
+#define __local_sub(i,l) ((l)->val.counter -= (i))
+
+/*
+ * Use these for per-cpu local_t variables. Note they take a variable (eg. mystruct.foo),
+ * not an address.
+ */
+#define cpu_local_read(v) local_read(&__ia64_per_cpu_var(v))
+#define cpu_local_set(v, i) local_set(&__ia64_per_cpu_var(v), (i))
+#define cpu_local_inc(v) local_inc(&__ia64_per_cpu_var(v))
+#define cpu_local_dec(v) local_dec(&__ia64_per_cpu_var(v))
+#define cpu_local_add(i, v) local_add((i), &__ia64_per_cpu_var(v))
+#define cpu_local_sub(i, v) local_sub((i), &__ia64_per_cpu_var(v))
+
+/*
+ * Non-atomic increments, i.e., preemption disabled and won't be touched in interrupt,
+ * etc.
+ */
+#define __cpu_local_inc(v) __local_inc(&__ia64_per_cpu_var(v))
+#define __cpu_local_dec(v) __local_dec(&__ia64_per_cpu_var(v))
+#define __cpu_local_add(i, v) __local_add((i), &__ia64_per_cpu_var(v))
+#define __cpu_local_sub(i, v) __local_sub((i), &__ia64_per_cpu_var(v))
+
+#endif /* _ASM_IA64_LOCAL_H */