/* SPDX-License-Identifier: GPL-2.0-only *//* * * Copyright (C) 2017 Hari Bathini, IBM Corporation */ #ifndef __PERF_NAMESPACES_H#define __PERF_NAMESPACES_H #include <sys/types.h>#include <linux/stddef.h>#include <linux/perf_event.h>#include <linux/refcount.h>#include <linux/types.h> #ifndef HAVE_SETNS_SUPPORTint setns(int fd, int nstype);#endif struct perf_record_namespaces; struct namespaces {	struct list_head list;	u64 end_time;	struct perf_ns_link_info link_info[];}; struct namespaces *namespaces__new(struct perf_record_namespaces *event);void namespaces__free(struct namespaces *namespaces); struct nsinfo {	pid_t			pid;	pid_t			tgid;	pid_t			nstgid;	bool			need_setns;	char			*mntns_path;	refcount_t		refcnt;}; struct nscookie {	int			oldns;	int			newns;	char			*oldcwd;}; int nsinfo__init(struct nsinfo *nsi);struct nsinfo *nsinfo__new(pid_t pid);struct nsinfo *nsinfo__copy(struct nsinfo *nsi);void nsinfo__delete(struct nsinfo *nsi); struct nsinfo *nsinfo__get(struct nsinfo *nsi);void nsinfo__put(struct nsinfo *nsi); void nsinfo__mountns_enter(struct nsinfo *nsi, struct nscookie *nc);void nsinfo__mountns_exit(struct nscookie *nc); char *nsinfo__realpath(const char *path, struct nsinfo *nsi); static inline void __nsinfo__zput(struct nsinfo **nsip){	if (nsip) {		nsinfo__put(*nsip);		*nsip = NULL;	}} #define nsinfo__zput(nsi) __nsinfo__zput(&nsi) const char *perf_ns__name(unsigned int id); #endif  /* __PERF_NAMESPACES_H */