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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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029c75e5cf
Let tools that need to have those variables with the sysctl current values use a function that will read them. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-1ljj3oeo5kpt2n1icfd9vowe@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
83 lines
2.1 KiB
C
83 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef GIT_COMPAT_UTIL_H
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#define GIT_COMPAT_UTIL_H
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#define _BSD_SOURCE 1
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/* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */
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#define _DEFAULT_SOURCE 1
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <linux/compiler.h>
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#include <sys/types.h>
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/* General helper functions */
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void usage(const char *err) __noreturn;
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void die(const char *err, ...) __noreturn __printf(1, 2);
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static inline void *zalloc(size_t size)
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{
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return calloc(1, size);
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}
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#define zfree(ptr) ({ free(*ptr); *ptr = NULL; })
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struct dirent;
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struct nsinfo;
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struct strlist;
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int mkdir_p(char *path, mode_t mode);
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int rm_rf(const char *path);
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struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *));
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bool lsdir_no_dot_filter(const char *name, struct dirent *d);
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int copyfile(const char *from, const char *to);
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int copyfile_mode(const char *from, const char *to, mode_t mode);
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int copyfile_ns(const char *from, const char *to, struct nsinfo *nsi);
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ssize_t readn(int fd, void *buf, size_t n);
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ssize_t writen(int fd, const void *buf, size_t n);
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size_t hex_width(u64 v);
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int hex2u64(const char *ptr, u64 *val);
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extern unsigned int page_size;
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int __pure cacheline_size(void);
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int sysctl__max_stack(void);
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int fetch_kernel_version(unsigned int *puint,
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char *str, size_t str_sz);
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#define KVER_VERSION(x) (((x) >> 16) & 0xff)
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#define KVER_PATCHLEVEL(x) (((x) >> 8) & 0xff)
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#define KVER_SUBLEVEL(x) ((x) & 0xff)
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#define KVER_FMT "%d.%d.%d"
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#define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)
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const char *perf_tip(const char *dirpath);
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#ifndef HAVE_SCHED_GETCPU_SUPPORT
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int sched_getcpu(void);
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#endif
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#ifndef HAVE_SETNS_SUPPORT
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int setns(int fd, int nstype);
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#endif
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extern bool perf_singlethreaded;
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void perf_set_singlethreaded(void);
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void perf_set_multithreaded(void);
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#ifndef O_CLOEXEC
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#ifdef __sparc__
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#define O_CLOEXEC 0x400000
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#elif defined(__alpha__) || defined(__hppa__)
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#define O_CLOEXEC 010000000
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#else
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#define O_CLOEXEC 02000000
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#endif
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#endif
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#endif /* GIT_COMPAT_UTIL_H */
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