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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2013-07-27 22:15:01 +0000
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2013-07-27 22:15:01 +0000
commit7996a3d79d55b7f879dfd62e202bbfe2963718d3 (patch)
tree8d9f6759fec4099b9be503c11c7ed174f7204980 /libdde-linux26/contrib/include/asm-generic/irq_regs.h
parent4fbe7358c7747a9165f776eb19addbb9baf7def2 (diff)
really properly move files
Diffstat (limited to 'libdde-linux26/contrib/include/asm-generic/irq_regs.h')
-rw-r--r--libdde-linux26/contrib/include/asm-generic/irq_regs.h37
1 files changed, 37 insertions, 0 deletions
diff --git a/libdde-linux26/contrib/include/asm-generic/irq_regs.h b/libdde-linux26/contrib/include/asm-generic/irq_regs.h
new file mode 100644
index 00000000..5ae1d07d
--- /dev/null
+++ b/libdde-linux26/contrib/include/asm-generic/irq_regs.h
@@ -0,0 +1,37 @@
+/* Fallback per-CPU frame pointer holder
+ *
+ * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _ASM_GENERIC_IRQ_REGS_H
+#define _ASM_GENERIC_IRQ_REGS_H
+
+#include <linux/percpu.h>
+
+/*
+ * Per-cpu current frame pointer - the location of the last exception frame on
+ * the stack
+ */
+DECLARE_PER_CPU(struct pt_regs *, __irq_regs);
+
+static inline struct pt_regs *get_irq_regs(void)
+{
+ return __get_cpu_var(__irq_regs);
+}
+
+static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs)
+{
+ struct pt_regs *old_regs, **pp_regs = &__get_cpu_var(__irq_regs);
+
+ old_regs = *pp_regs;
+ *pp_regs = new_regs;
+ return old_regs;
+}
+
+#endif /* _ASM_GENERIC_IRQ_REGS_H */