34ec12349c
Allocate ->signal->stats on demand in taskstats_exit(), this allows us to remove taskstats_tgid_alloc() (the last non-trivial inline) from taskstat's public interface. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Shailabh Nagar <nagar@watson.ibm.com> Cc: Jay Lan <jlan@engr.sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
44 lines
1 KiB
C
44 lines
1 KiB
C
/* taskstats_kern.h - kernel header for per-task statistics interface
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*
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* Copyright (C) Shailabh Nagar, IBM Corp. 2006
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* (C) Balbir Singh, IBM Corp. 2006
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*/
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#ifndef _LINUX_TASKSTATS_KERN_H
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#define _LINUX_TASKSTATS_KERN_H
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#include <linux/taskstats.h>
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#include <linux/sched.h>
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#include <net/genetlink.h>
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#ifdef CONFIG_TASKSTATS
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extern struct kmem_cache *taskstats_cache;
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extern struct mutex taskstats_exit_mutex;
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static inline void taskstats_tgid_init(struct signal_struct *sig)
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{
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sig->stats = NULL;
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}
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static inline void taskstats_tgid_free(struct signal_struct *sig)
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{
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if (sig->stats)
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kmem_cache_free(taskstats_cache, sig->stats);
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}
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extern void taskstats_exit(struct task_struct *, int group_dead);
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extern void taskstats_init_early(void);
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#else
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static inline void taskstats_exit(struct task_struct *tsk, int group_dead)
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{}
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static inline void taskstats_tgid_init(struct signal_struct *sig)
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{}
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static inline void taskstats_tgid_free(struct signal_struct *sig)
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{}
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static inline void taskstats_init_early(void)
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{}
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#endif /* CONFIG_TASKSTATS */
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#endif
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