add custom probes support and update tracepoints

[ust.git] / include / ust / core.h

diff --git a/include/ust/core.h b/include/ust/core.h
new file mode 100644 (file)
index 0000000..27c7e6d
--- /dev/null
+++ b/include/ust/core.h
@@ -0,0 +1,39 @@
+#ifndef UST_CORE_H
+#define UST_CORE_H
+
+#if defined(CONFIG_LTT) && defined(CONFIG_LTT_ALIGNMENT)
+
+/*
+ * Calculate the offset needed to align the type.
+ * size_of_type must be non-zero.
+ */
+static inline unsigned int ltt_align(size_t align_drift, size_t size_of_type)
+{
+       size_t alignment = min(sizeof(void *), size_of_type);
+       return (alignment - align_drift) & (alignment - 1);
+}
+/* Default arch alignment */
+#define LTT_ALIGN
+
+static inline int ltt_get_alignment(void)
+{
+       return sizeof(void *);
+}
+
+#else
+
+static inline unsigned int ltt_align(size_t align_drift,
+                size_t size_of_type)
+{
+       return 0;
+}
+
+#define LTT_ALIGN __attribute__((packed))
+
+static inline int ltt_get_alignment(void)
+{
+       return 0;
+}
+#endif /* defined(CONFIG_LTT) && defined(CONFIG_LTT_ALIGNMENT) */
+
+#endif /* UST_CORE_H */