mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
synced 2026-11-11 03:51:41 +01:00
Elena Reshetova
364fed3513
The refcount_t type and corresponding API should be used instead of atomic_t when the variable is used as a reference counter. This allows to avoid accidental refcounter overflows that might lead to use-after-free situations. Signed-off-by: Elena Reshetova <[email protected]> Signed-off-by: David Windsor <[email protected]> Signed-off-by: Hans Liljestrand <[email protected]> Signed-off-by: Kees Kook <[email protected]> Tested-by: Arnaldo Carvalho de Melo <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andrew Morton <[email protected]> Cc: David Windsor <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Hans Liljestrand <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Kees Kook <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Matija Glavinic Pecotic <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] [ Did missing tests/thread-map.c conversion ] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
#ifndef __PERF_THREAD_MAP_H
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#define __PERF_THREAD_MAP_H
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#include <sys/types.h>
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#include <stdio.h>
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#include <linux/refcount.h>
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struct thread_map_data {
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pid_t pid;
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char *comm;
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};
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struct thread_map {
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refcount_t refcnt;
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int nr;
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struct thread_map_data map[];
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};
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struct thread_map_event;
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struct thread_map *thread_map__new_dummy(void);
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struct thread_map *thread_map__new_by_pid(pid_t pid);
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struct thread_map *thread_map__new_by_tid(pid_t tid);
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struct thread_map *thread_map__new_by_uid(uid_t uid);
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struct thread_map *thread_map__new(pid_t pid, pid_t tid, uid_t uid);
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struct thread_map *thread_map__new_event(struct thread_map_event *event);
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struct thread_map *thread_map__get(struct thread_map *map);
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void thread_map__put(struct thread_map *map);
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struct thread_map *thread_map__new_str(const char *pid,
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const char *tid, uid_t uid);
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struct thread_map *thread_map__new_by_tid_str(const char *tid_str);
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size_t thread_map__fprintf(struct thread_map *threads, FILE *fp);
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static inline int thread_map__nr(struct thread_map *threads)
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{
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return threads ? threads->nr : 1;
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}
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static inline pid_t thread_map__pid(struct thread_map *map, int thread)
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{
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return map->map[thread].pid;
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}
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static inline void
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thread_map__set_pid(struct thread_map *map, int thread, pid_t pid)
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{
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map->map[thread].pid = pid;
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}
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static inline char *thread_map__comm(struct thread_map *map, int thread)
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{
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return map->map[thread].comm;
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}
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void thread_map__read_comms(struct thread_map *threads);
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bool thread_map__has(struct thread_map *threads, pid_t pid);
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int thread_map__remove(struct thread_map *threads, int idx);
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#endif /* __PERF_THREAD_MAP_H */
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