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Create kernel thread and let it to issue the write request. We can't

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do this from trace target process since we can't sleep at certain
trace point (otherwise system may hang).  Address PR#23155.
This commit is contained in:
enami 2004-09-22 22:15:03 +00:00
parent 619df63ccc
commit 633ef38973
2 changed files with 673 additions and 262 deletions
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911
sys/kern/kern_ktrace.c
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24
sys/sys/ktrace.h
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@ -1,4 +1,4 @@
/* $NetBSD: ktrace.h,v 1.39 2004/06/23 23:05:48 christos Exp $ */
/* $NetBSD: ktrace.h,v 1.40 2004/09/22 22:15:03 enami Exp $ */
/*
* Copyright (c) 1988, 1993
@ -226,18 +226,18 @@ __END_DECLS
#else
int ktrcsw(struct proc *, int, int);
int ktremul(struct proc *);
int ktrgenio(struct proc *, int, enum uio_rw, struct iovec *, int, int);
int ktrnamei(struct proc *, char *);
int ktrpsig(struct proc *, int, sig_t, const sigset_t *, const ksiginfo_t *);
int ktrsyscall(struct proc *, register_t, register_t,
void ktrcsw(struct proc *, int, int);
void ktremul(struct proc *);
void ktrgenio(struct proc *, int, enum uio_rw, struct iovec *, int, int);
void ktrnamei(struct proc *, char *);
void ktrpsig(struct proc *, int, sig_t, const sigset_t *, const ksiginfo_t *);
void ktrsyscall(struct proc *, register_t, register_t,
const struct sysent *, register_t []);
int ktrsysret(struct proc *, register_t, int, register_t *);
int ktruser(struct proc *, const char *, void *, size_t, int);
int ktrmmsg(struct proc *, const void *, size_t);
int ktrkmem(struct proc *, int, const void *, size_t);
int ktrmool(struct proc *, const void *, size_t, const void *);
void ktrsysret(struct proc *, register_t, int, register_t *);
void ktruser(struct proc *, const char *, void *, size_t, int);
void ktrmmsg(struct proc *, const void *, size_t);
void ktrkmem(struct proc *, int, const void *, size_t);
void ktrmool(struct proc *, const void *, size_t, const void *);
void ktrderef(struct proc *);
void ktradref(struct proc *);