PERFORCE change 100035 for review

[John Birrell]

http://perforce.freebsd.org/chv.cgi?CH=100035

Change 100035 by jb at jb_freebsd2 on 2006/06/26 06:17:54

	Add system initialisation callbacks from the dtrace module and
	the anonymous enablings. The provider initialisation takes place
	between the two.
	
	This change moves the DTrace initialistion a lot earlier in the
	kernel boot process, thereby allowing tracing of all the device
	probing etc. On my development box the early part of the dmesg
	looks like this when booting with DTrace modules loaded:
	
	Copyright (c) 1992-2006 The FreeBSD Project.
	Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
		The Regents of the University of California. All rights reserved.
	FreeBSD 7.0-CURRENT #68: Mon Jun 26 09:29:31 EST 2006
	    jbr at freebsd7.cimlogic.com.au:/u2/freebsd/obj/freebsd2/u2/p4/dtrace/src/sys/DTRACE
	Timecounter "i8254" frequency 1193182 Hz quality 0
	CPU: Intel(R) Pentium(R) 4 CPU 2.40GHz (2400.10-MHz 686-class CPU)
	  Origin = "GenuineIntel"  Id = 0xf27  Stepping = 7
	  Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
	  Features2=0x400<CNTX-ID>
	real memory  = 503300096 (479 MB)
	avail memory = 482922496 (460 MB)
	ACPI APIC Table: <ASUS   P4S533MX>
	DTrace registered provider 'dtrace'
	DTrace registered provider 'sdt'
	DTrace registered provider 'fbt'
	DTrace registered provider 'profile'
	DTrace registered provider 'syscall'
	DTrace enabling probe (:::BEGIN)
	DTrace enabling probe (:::ERROR)
	ioapic0 <Version 8.0> irqs 0-23 on motherboard
	kbd1 at kbdmux0
	acpi0: <ASUS P4S533MX> on motherboard
	acpi0: Overriding SCI Interrupt from IRQ 9 to IRQ 20
	acpi0: Power Button (fixed)
	Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
	acpi_timer0: <24-bit timer at 3.579545MHz> port 0xe408-0xe40b on acpi0

Affected files ...

.. //depot/projects/dtrace/src/sys/cddl/dev/dtrace/dtrace.c#30 edit

Differences ...

==== //depot/projects/dtrace/src/sys/cddl/dev/dtrace/dtrace.c#30 (text+ko) ====

@@ -86,7 +86,7 @@
 static d_close_t	dtrace_close;
 static d_ioctl_t	dtrace_ioctl;
 static d_open_t		dtrace_open;
-static int		dtrace_load(void);
+static void		dtrace_load(void *);
 static int		dtrace_unload(void);
 static void		dtrace_clone(void *, struct ucred *, char *, int , struct cdev **);
 
@@ -512,6 +512,7 @@
 static void dtrace_action_stop(void);
 static void dtrace_action_ustack(dtrace_mstate_t *, dtrace_state_t *, uint64_t *, uint64_t);
 static void dtrace_aggregate(dtrace_aggregation_t *, dtrace_buffer_t *, intptr_t, dtrace_buffer_t *, uint64_t, uint64_t);
+static void dtrace_anon_init(void *);
 static void dtrace_anon_property(void);
 static void dtrace_bcopy(const void *, void *, size_t);
 static void dtrace_buffer_drop(dtrace_buffer_t *);
@@ -665,6 +666,9 @@
 #include <cddl/dev/dtrace/i386/dtrace_isa.c>
 #endif
 
+SYSINIT(dtrace_load, SI_SUB_DTRACE, SI_ORDER_FIRST, dtrace_load, NULL)
+SYSINIT(dtrace_anon_init, SI_SUB_DTRACE_ANON, SI_ORDER_FIRST, dtrace_anon_init, NULL)
+
 DEV_MODULE(dtrace, dtrace_modevent, NULL);
 MODULE_VERSION(dtrace, 1);
 MODULE_DEPEND(dtrace, cyclic, 1, 1, 1);