Date: Wed, 30 Jan 2008 05:39:35 GMT From: John Birrell <jb@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 134443 for review Message-ID: <200801300539.m0U5dZYq086558@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=134443 Change 134443 by jb@jb_freebsd1 on 2008/01/30 05:39:22 IFdtrace Affected files ... .. //depot/projects/dtrace7/src/sys/kern/kern_exit.c#2 edit Differences ... ==== //depot/projects/dtrace7/src/sys/kern/kern_exit.c#2 (text+ko) ==== @@ -38,6 +38,7 @@ __FBSDID("$FreeBSD: src/sys/kern/kern_exit.c,v 1.304 2007/06/13 20:01:42 jhb Exp $"); #include "opt_compat.h" +#include "opt_kdtrace.h" #include "opt_ktrace.h" #include "opt_mac.h" @@ -65,6 +66,7 @@ #include <sys/ptrace.h> #include <sys/acct.h> /* for acct_process() function prototype */ #include <sys/filedesc.h> +#include <sys/sdt.h> #include <sys/shm.h> #include <sys/sem.h> #ifdef KTRACE @@ -82,6 +84,15 @@ #include <vm/vm_page.h> #include <vm/uma.h> +#ifdef KDTRACE_HOOKS +#include <sys/dtrace_bsd.h> +dtrace_execexit_func_t dtrace_fasttrap_exit; +#endif + +SDT_PROVIDER_DECLARE(proc); +SDT_PROBE_DEFINE(proc, kernel, , exit); +SDT_PROBE_ARGTYPE(proc, kernel, , exit, 0, "int"); + /* Required to be non-static for SysVR4 emulator */ MALLOC_DEFINE(M_ZOMBIE, "zombie", "zombie proc status"); @@ -449,11 +460,29 @@ PROC_LOCK(p); p->p_xstat = rv; p->p_xthread = td; + +#ifdef KDTRACE_HOOKS /* + * Tell the DTrace fasttrap provider about the exit if it + * has declared an interest. + */ + if (dtrace_fasttrap_exit) + dtrace_fasttrap_exit(p); +#endif + + /* * Notify interested parties of our demise. */ KNOTE_LOCKED(&p->p_klist, NOTE_EXIT); +#ifdef KDTRACE_HOOKS + int reason = CLD_EXITED; + if (WCOREDUMP(rv)) + reason = CLD_DUMPED; + else if (WIFSIGNALED(rv)) + reason = CLD_KILLED; + SDT_PROBE(proc, kernel, , exit, reason, 0, 0, 0, 0); +#endif /* * Just delete all entries in the p_klist. At this point we won't * report any more events, and there are nasty race conditions that
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