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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _PERF_ANNOTATE_DATA_H
#define _PERF_ANNOTATE_DATA_H
#include <errno.h>
#include <linux/compiler.h>
#include <linux/rbtree.h>
#include <linux/types.h>
struct evsel;
struct map_symbol;
/**
* struct annotated_member - Type of member field
* @node: List entry in the parent list
* @children: List head for child nodes
* @type_name: Name of the member type
* @var_name: Name of the member variable
* @offset: Offset from the outer data type
* @size: Size of the member field
*
* This represents a member type in a data type.
*/
struct annotated_member {
struct list_head node;
struct list_head children;
char *type_name;
char *var_name;
int offset;
int size;
};
/**
* struct type_hist_entry - Histogram entry per offset
* @nr_samples: Number of samples
* @period: Count of event
*/
struct type_hist_entry {
int nr_samples;
u64 period;
};
/**
* struct type_hist - Type histogram for each event
* @nr_samples: Total number of samples in this data type
* @period: Total count of the event in this data type
* @offset: Array of histogram entry
*/
struct type_hist {
u64 nr_samples;
u64 period;
struct type_hist_entry addr[];
};
/**
* struct annotated_data_type - Data type to profile
* @node: RB-tree node for dso->type_tree
* @self: Actual type information
* @nr_histogram: Number of histogram entries
* @histograms: An array of pointers to histograms
*
* This represents a data type accessed by samples in the profile data.
*/
struct annotated_data_type {
struct rb_node node;
struct annotated_member self;
int nr_histograms;
struct type_hist **histograms;
};
extern struct annotated_data_type unknown_type;
#ifdef HAVE_DWARF_SUPPORT
/* Returns data type at the location (ip, reg, offset) */
struct annotated_data_type *find_data_type(struct map_symbol *ms, u64 ip,
int reg, int offset);
/* Update type access histogram at the given offset */
int annotated_data_type__update_samples(struct annotated_data_type *adt,
struct evsel *evsel, int offset,
int nr_samples, u64 period);
/* Release all data type information in the tree */
void annotated_data_type__tree_delete(struct rb_root *root);
#else /* HAVE_DWARF_SUPPORT */
static inline struct annotated_data_type *
find_data_type(struct map_symbol *ms __maybe_unused, u64 ip __maybe_unused,
int reg __maybe_unused, int offset __maybe_unused)
{
return NULL;
}
static inline int
annotated_data_type__update_samples(struct annotated_data_type *adt __maybe_unused,
struct evsel *evsel __maybe_unused,
int offset __maybe_unused,
int nr_samples __maybe_unused,
u64 period __maybe_unused)
{
return -1;
}
static inline void annotated_data_type__tree_delete(struct rb_root *root __maybe_unused)
{
}
#endif /* HAVE_DWARF_SUPPORT */
#endif /* _PERF_ANNOTATE_DATA_H */
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