This provides an implementation of the architecture dependent portion of
syslets which disables syslet operations.
This patch is an incomplete demonstration. All asm-*/syslet*.h files would
include these files until their architectures provide implementations which
enable syslet support.
Signed-off-by: Zach Brown <[email protected]>
diff --git a/include/asm-generic/syslet-abi.h b/include/asm-generic/syslet-abi.h
new file mode 100644
index 0000000..5d19971
--- /dev/null
+++ b/include/asm-generic/syslet-abi.h
@@ -0,0 +1,11 @@
+#ifndef _ASM_GENERIC_SYSLET_ABI_H
+#define _ASM_GENERIC_SYSLET_ABI_H
+
+/*
+ * I'm assuming that a u64 ip and u64 esp won't be enough for all
+ * archs, so I just let each arch define its own.
+ */
+struct syslet_frame {
+};
+
+#endif
diff --git a/include/asm-generic/syslet.h b/include/asm-generic/syslet.h
new file mode 100644
index 0000000..de9a750
--- /dev/null
+++ b/include/asm-generic/syslet.h
@@ -0,0 +1,34 @@
+#ifndef _ASM_GENERIC_SYSLET_H
+#define _ASM_GENERIC_SYSLET_H
+
+/*
+ * This provider of the arch-specific syslet APIs is used when an architecture
+ * doesn't support syslets.
+ */
+
+/* this stops the other functions from ever being called */
+static inline int syslet_frame_valid(struct syslet_frame *frame)
+{
+ return 0;
+}
+
+static inline void set_user_frame(struct task_struct *task,
+ struct syslet_frame *frame)
+{
+ BUG();
+}
+
+static inline void move_user_context(struct task_struct *dest,
+ struct task_struct *src)
+{
+ BUG();
+}
+
+static inline int create_syslet_thread(long (*fn)(void *),
+ void *arg, unsigned long flags)
+{
+ BUG();
+ return 0;
+}
+
+#endif
diff --git a/include/asm-x86/syslet-abi.h b/include/asm-x86/syslet-abi.h
new file mode 100644
index 0000000..14a7182
--- /dev/null
+++ b/include/asm-x86/syslet-abi.h
@@ -0,0 +1 @@
+#include <asm-generic/syslet-abi.h>
diff --git a/include/asm-x86/syslet.h b/include/asm-x86/syslet.h
new file mode 100644
index 0000000..583d810
--- /dev/null
+++ b/include/asm-x86/syslet.h
@@ -0,0 +1 @@
+#include <asm-generic/syslet.h>
--
1.5.2.2
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