Date: Wed, 30 Jan 2008 05:36:31 GMT From: John Birrell <jb@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 134442 for review Message-ID: <200801300536.m0U5aVu3086466@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=134442 Change 134442 by jb@jb_freebsd1 on 2008/01/30 05:36:18 IFdtrace Affected files ... .. //depot/projects/dtrace7/src/sys/kern/kern_fork.c#3 edit Differences ... ==== //depot/projects/dtrace7/src/sys/kern/kern_fork.c#3 (text+ko) ==== @@ -37,6 +37,7 @@ #include <sys/cdefs.h> __FBSDID("$FreeBSD: src/sys/kern/kern_fork.c,v 1.282.2.2 2008/01/18 10:02:51 kib Exp $"); +#include "opt_kdtrace.h" #include "opt_ktrace.h" #include "opt_mac.h" @@ -63,6 +64,7 @@ #include <sys/ktr.h> #include <sys/ktrace.h> #include <sys/unistd.h> +#include <sys/sdt.h> #include <sys/sx.h> #include <sys/signalvar.h> @@ -75,7 +77,17 @@ #include <vm/vm_extern.h> #include <vm/uma.h> +#ifdef KDTRACE_HOOKS +#include <sys/dtrace_bsd.h> +dtrace_fork_func_t dtrace_fasttrap_fork; +#endif +SDT_PROVIDER_DECLARE(proc); +SDT_PROBE_DEFINE(proc, kernel, , create); +SDT_PROBE_ARGTYPE(proc, kernel, , create, 0, "struct proc *"); +SDT_PROBE_ARGTYPE(proc, kernel, , create, 1, "struct proc *"); +SDT_PROBE_ARGTYPE(proc, kernel, , create, 2, "int"); + #ifndef _SYS_SYSPROTO_H_ struct fork_args { int dummy; @@ -621,6 +633,13 @@ } /* + * Tell the DTrace fasttrap provider about the new process + * if it has registered an interest. + */ + if (dtrace_fasttrap_fork) + dtrace_fasttrap_fork(p1, p2); + + /* * This begins the section where we must prevent the parent * from being swapped. */ @@ -707,6 +726,8 @@ */ KNOTE_LOCKED(&p1->p_klist, NOTE_FORK | p2->p_pid); + SDT_PROBE(proc, kernel, , create, p2, p1, flags, 0, 0); + PROC_UNLOCK(p1); /*
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