cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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data.h (2524B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef __PERF_DATA_H
      3#define __PERF_DATA_H
      4
      5#include <stdio.h>
      6#include <stdbool.h>
      7#include <linux/types.h>
      8
      9enum perf_data_mode {
     10	PERF_DATA_MODE_WRITE,
     11	PERF_DATA_MODE_READ,
     12};
     13
     14enum perf_dir_version {
     15	PERF_DIR_SINGLE_FILE	= 0,
     16	PERF_DIR_VERSION	= 1,
     17};
     18
     19struct perf_data_file {
     20	char		*path;
     21	union {
     22		int	 fd;
     23		FILE	*fptr;
     24	};
     25	unsigned long	 size;
     26};
     27
     28struct perf_data {
     29	const char		*path;
     30	struct perf_data_file	 file;
     31	bool			 is_pipe;
     32	bool			 is_dir;
     33	bool			 force;
     34	bool			 use_stdio;
     35	bool			 in_place_update;
     36	enum perf_data_mode	 mode;
     37
     38	struct {
     39		u64			 version;
     40		struct perf_data_file	*files;
     41		int			 nr;
     42	} dir;
     43};
     44
     45static inline bool perf_data__is_read(struct perf_data *data)
     46{
     47	return data->mode == PERF_DATA_MODE_READ;
     48}
     49
     50static inline bool perf_data__is_write(struct perf_data *data)
     51{
     52	return data->mode == PERF_DATA_MODE_WRITE;
     53}
     54
     55static inline int perf_data__is_pipe(struct perf_data *data)
     56{
     57	return data->is_pipe;
     58}
     59
     60static inline bool perf_data__is_dir(struct perf_data *data)
     61{
     62	return data->is_dir;
     63}
     64
     65static inline bool perf_data__is_single_file(struct perf_data *data)
     66{
     67	return data->dir.version == PERF_DIR_SINGLE_FILE;
     68}
     69
     70static inline int perf_data__fd(struct perf_data *data)
     71{
     72	if (data->use_stdio)
     73		return fileno(data->file.fptr);
     74
     75	return data->file.fd;
     76}
     77
     78int perf_data__open(struct perf_data *data);
     79void perf_data__close(struct perf_data *data);
     80ssize_t perf_data__read(struct perf_data *data, void *buf, size_t size);
     81ssize_t perf_data__write(struct perf_data *data,
     82			      void *buf, size_t size);
     83ssize_t perf_data_file__write(struct perf_data_file *file,
     84			      void *buf, size_t size);
     85/*
     86 * If at_exit is set, only rename current perf.data to
     87 * perf.data.<postfix>, continue write on original data.
     88 * Set at_exit when flushing the last output.
     89 *
     90 * Return value is fd of new output.
     91 */
     92int perf_data__switch(struct perf_data *data,
     93			   const char *postfix,
     94			   size_t pos, bool at_exit, char **new_filepath);
     95
     96int perf_data__create_dir(struct perf_data *data, int nr);
     97int perf_data__open_dir(struct perf_data *data);
     98void perf_data__close_dir(struct perf_data *data);
     99int perf_data__update_dir(struct perf_data *data);
    100unsigned long perf_data__size(struct perf_data *data);
    101int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz);
    102bool has_kcore_dir(const char *path);
    103char *perf_data__kallsyms_name(struct perf_data *data);
    104bool is_perf_data(const char *path);
    105#endif /* __PERF_DATA_H */