X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=include%2Fcounter%2Fcounter-types.h;fp=include%2Fcounter%2Fcounter-types.h;h=5ae01849621408dfae1ee376e403b6e48d6f5bb0;hb=a101fa100885861be33fab3966db2c5136815724;hp=0000000000000000000000000000000000000000;hpb=e699ee6c837345eb408d600178cc6054ca131164;p=lttng-modules.git

diff --git a/include/counter/counter-types.h b/include/counter/counter-types.h
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+++ b/include/counter/counter-types.h
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+/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
+ *
+ * counter/counter-types.h
+ *
+ * LTTng Counters Types
+ *
+ * Copyright (C) 2020 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ */
+
+#ifndef _LTTNG_COUNTER_TYPES_H
+#define _LTTNG_COUNTER_TYPES_H
+
+#include <linux/types.h>
+#include <linux/percpu.h>
+#include <counter/config.h>
+
+struct lib_counter_dimension {
+	/*
+	 * Max. number of indexable elements.
+	 */
+	size_t max_nr_elem;
+	/*
+	 * The stride for a dimension is the multiplication factor which
+	 * should be applied to its index to take into account other
+	 * dimensions nested inside.
+	 */
+	size_t stride;
+};
+
+struct lib_counter_layout {
+	void *counters;
+	unsigned long *underflow_bitmap;
+	unsigned long *overflow_bitmap;
+};
+
+enum lib_counter_arithmetic {
+	LIB_COUNTER_ARITHMETIC_MODULAR,
+	LIB_COUNTER_ARITHMETIC_SATURATE,
+};
+
+struct lib_counter {
+	size_t nr_dimensions;
+	int64_t allocated_elem;
+	struct lib_counter_dimension *dimensions;
+	enum lib_counter_arithmetic arithmetic;
+	union {
+		struct {
+			int32_t max, min;
+		} limits_32_bit;
+		struct {
+			int64_t max, min;
+		} limits_64_bit;
+	} saturation;
+	union {
+		int8_t s8;
+		int16_t s16;
+		int32_t s32;
+		int64_t s64;
+	} global_sum_step;		/* 0 if unused */
+	struct lib_counter_config config;
+
+	struct lib_counter_layout global_counters;
+	struct lib_counter_layout __percpu *percpu_counters;
+};
+
+#endif /* _LTTNG_COUNTER_TYPES_H */