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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bpf_util.h (1041B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef __BPF_UTIL__
      3#define __BPF_UTIL__
      4
      5#include <stdio.h>
      6#include <stdlib.h>
      7#include <string.h>
      8#include <errno.h>
      9#include <bpf/libbpf.h> /* libbpf_num_possible_cpus */
     10
     11static inline unsigned int bpf_num_possible_cpus(void)
     12{
     13	int possible_cpus = libbpf_num_possible_cpus();
     14
     15	if (possible_cpus < 0) {
     16		printf("Failed to get # of possible cpus: '%s'!\n",
     17		       strerror(-possible_cpus));
     18		exit(1);
     19	}
     20	return possible_cpus;
     21}
     22
     23#define __bpf_percpu_val_align	__attribute__((__aligned__(8)))
     24
     25#define BPF_DECLARE_PERCPU(type, name)				\
     26	struct { type v; /* padding */ } __bpf_percpu_val_align	\
     27		name[bpf_num_possible_cpus()]
     28#define bpf_percpu(name, cpu) name[(cpu)].v
     29
     30#ifndef ARRAY_SIZE
     31# define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
     32#endif
     33
     34#ifndef sizeof_field
     35#define sizeof_field(TYPE, MEMBER) sizeof((((TYPE *)0)->MEMBER))
     36#endif
     37
     38#ifndef offsetofend
     39#define offsetofend(TYPE, MEMBER) \
     40	(offsetof(TYPE, MEMBER)	+ sizeof_field(TYPE, MEMBER))
     41#endif
     42
     43#endif /* __BPF_UTIL__ */