Bruce Evans d6b9e17eb5 Improved non-statistical (GUPROF) profiling: ... - use a more accurate and more efficient method of compensating for overheads. The old method counted too much time against leaf functions. - normally use the Pentium timestamp counter if available. On Pentiums, the times are now accurate to within a couple of cpu clock cycles per function call in the (unlikely) event that there are no cache misses in or caused by the profiling code. - optionally use an arbitrary Pentium event counter if available. - optionally regress to using the i8254 counter. - scaled the i8254 counter by a factor of 128. Now the i8254 counters overflow slightly faster than the TSC counters for a 150MHz Pentium :-) (after about 16 seconds). This is to avoid fractional overheads. files.i386: permon.c temporarily has to be classified as a profiling-routine because a couple of functions in it may be called from profiling code. options.i386: - I586_CTR_GUPROF is currently unused (oops). - I586_PMC_GUPROF should be something like 0x70000 to enable (but not use unless prof_machdep.c is changed) support for Pentium event counters. 7 is a control mode and the counter number 0 is somewhere in the 0000 bits (see perfmon.h for the encoding). profile.h: - added declarations. - cleaned up separation of user mode declarations. prof_machdep.c: Mostly clock-select changes. The default clock can be changed by editing kmem. There should be a sysctl for this. subr_prof.c: - added copyright. - calibrate overheads for the new method. - documented new method. - fixed races and and machine dependencies in start/stop code. mcount.c: Use the new overhead compensation method. gmon.h: - changed GPROF4 counter type from unsigned to int. Oops, this should be machine-dependent and/or int32_t. - reorganized overhead counters. Submitted by: Pentium event counter changes mostly by wollman		1996-10-17 19:32:31 +00:00
..
imgact_aout.c	Fixed the easy cases of const poisoning in the kernel. Cosmetic.	1996-08-31 16:52:44 +00:00
imgact_elf.c	Oops forgot to remove a debug printf.	1996-10-16 20:59:08 +00:00
imgact_gzip.c	Fixed the easy cases of const poisoning in the kernel. Cosmetic.	1996-08-31 16:52:44 +00:00
imgact_shell.c	Fixed the easy cases of const poisoning in the kernel. Cosmetic.	1996-08-31 16:52:44 +00:00
inflate.c
init_main.c	call srandom() during the boot to start the sequence with a slightly less	1996-09-23 04:37:54 +00:00
init_sysent.c	Add the utrace(caddr_t addr,size_t len) syscall, that will store the	1996-09-19 19:49:13 +00:00
init_sysvec.c	Clean-up the new VM map procfs code, and also add support for executable	1996-06-18 05:16:00 +00:00
kern_acct.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
kern_clock.c	Don't include "opt_cpu.h" in <machine/clock.h>, since this breaks lkm's.	1996-10-10 10:25:26 +00:00
kern_conf.c	for kern_conf.c, start allocating dynamic major numbers	1996-08-19 19:22:26 +00:00
kern_descrip.c	Fixed bitrot in the read-only attribute:	1996-09-28 16:33:21 +00:00
kern_exec.c	Performance optimizations. One of which was meant to go in before the	1996-10-12 21:35:25 +00:00
kern_exit.c	Performance optimizations. One of which was meant to go in before the	1996-10-12 21:35:25 +00:00
kern_fork.c	Eliminated nested include of <sys/unistd.h> in <sys/file.h> in the kernel.	1996-09-03 14:25:27 +00:00
kern_ktrace.c	Remove the extra length field from the utrace entries. It's redundant.	1996-09-22 18:17:51 +00:00
kern_lkm.c	`struct linker_set execsw_set' was declared as const and pointers in it	1996-09-03 22:52:27 +00:00
kern_lockf.c	Eliminated nested include of <sys/unistd.h> in <sys/file.h> in the kernel.	1996-09-03 14:25:27 +00:00
kern_malloc.c	The check for multiple freed items were bogus. fixed.	1996-08-04 20:08:48 +00:00
kern_mib.c	Oops, read-only is spelled RD here.	1996-09-28 15:53:30 +00:00
kern_ntptime.c
kern_physio.c	Fix a problem that caused system crashes after physio. This problem	1996-06-26 05:52:15 +00:00
kern_proc.c	Attached simple external ddb commands show rtc', show pgrpdump'	1996-09-14 10:53:48 +00:00
kern_prot.c	Added #include of <unistd.h> so that there is some chance that	1996-09-03 12:52:58 +00:00
kern_random.c	Put I*86_CPU defines in opt_cpu.h.	1996-10-09 19:47:44 +00:00
kern_resource.c	Fixed accumulation of run time for processes that don't accumulate	1996-06-08 11:48:28 +00:00
kern_shutdown.c	Changed cncheckc() interface so that it is 8-bit clean - return -1	1996-09-14 04:31:09 +00:00
kern_sig.c	Log not exited signal only, but the fact that core dumped (or not) too	1996-07-09 18:12:37 +00:00
kern_subr.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
kern_synch.c	Make processes waken up eligible for immediate swap-in.	1996-10-17 02:58:20 +00:00
kern_sysctl.c	Fixed bogus casts (const on the wrong *' in **') in a qsort-comparision	1996-09-03 22:26:31 +00:00
kern_tc.c	Don't include "opt_cpu.h" in <machine/clock.h>, since this breaks lkm's.	1996-10-10 10:25:26 +00:00
kern_time.c	if we jump the time, we need to check all the process real interval timers.	1996-09-30 19:28:52 +00:00
kern_timeout.c	Don't include "opt_cpu.h" in <machine/clock.h>, since this breaks lkm's.	1996-10-10 10:25:26 +00:00
kern_xxx.c	Collect all the functioons concerned with rebooting into one place	1996-08-19 20:07:07 +00:00
Make.tags.inc	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
Makefile	Remove bogus architectures to allow make tags to work.	1996-03-31 18:53:43 +00:00
makesyscalls.sh	Don't use __dead in the kernel. It was an obfuscation for gcc >= 2.5	1996-09-13 09:20:15 +00:00
md5c.c
subr_autoconf.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
subr_clist.c	Attached simple external ddb commands show rtc', show pgrpdump'	1996-09-14 10:53:48 +00:00
subr_disklabel.c	Don't include <sys/conf.h> for the kernel in disk-related headers.	1996-09-20 17:39:44 +00:00
subr_diskmbr.c	Don't include <sys/conf.h> for the kernel in disk-related headers.	1996-09-20 17:39:44 +00:00
subr_diskslice.c	Don't include <sys/conf.h> for the kernel in disk-related headers.	1996-09-20 17:39:44 +00:00
subr_dkbad.c	Don't include <sys/conf.h> for the kernel in disk-related headers.	1996-09-20 17:39:44 +00:00
subr_log.c	Quiet a couple of -Wunused warnings.	1996-07-09 16:51:18 +00:00
subr_param.c	Add an option "EXTRA_VNODES" to cause an extra number of vnode structures	1996-05-31 00:20:34 +00:00
subr_prf.c	Fixed the easy cases of const poisoning in the kernel. Cosmetic.	1996-08-31 16:52:44 +00:00
subr_prof.c	Improved non-statistical (GUPROF) profiling:	1996-10-17 19:32:31 +00:00
subr_rlist.c	Undo a mistaken change from splhigh to splvm. Subr_rlist has been	1996-10-12 21:37:59 +00:00
subr_trap.c	Updated #includes to 4.4Lite style.	1996-09-10 08:32:01 +00:00
subr_xxx.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
sys_generic.c	Fix a minor style error in my code.	1996-08-20 15:03:41 +00:00
sys_pipe.c	Mostly some fixes from bde to start support for ASYNC I/O (SIGIO).	1996-10-11 02:27:30 +00:00
sys_process.c	Remove the now-unnecessary and incorrect wiring of the "other" processes	1996-06-02 06:24:27 +00:00
sys_socket.c	Modify the kernel to use the new pr_usrreqs interface rather than the old	1996-07-11 16:32:50 +00:00
syscalls.c	Add the utrace(caddr_t addr,size_t len) syscall, that will store the	1996-09-19 19:49:13 +00:00
syscalls.master	Add the utrace(caddr_t addr,size_t len) syscall, that will store the	1996-09-19 19:49:13 +00:00
sysv_ipc.c	kern_descrip.c: add fdshare()/fdcopy()	1996-02-23 18:49:25 +00:00
sysv_msg.c	Don't depend in the kernel on the gcc feature of doing arithmetic on	1996-08-31 14:48:13 +00:00
sysv_sem.c	Clean up -Wunused warnings.	1996-06-12 05:11:41 +00:00
sysv_shm.c	Fix a problem with child inheritance of sysv shm. Problem brought	1996-09-10 22:35:25 +00:00
tty_compat.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
tty_conf.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
tty_cons.c	Add support for embedded operation withou console	1996-10-16 00:19:40 +00:00
tty_pty.c	Clean up -Wunused warnings.	1996-06-12 05:11:41 +00:00
tty_snoop.c	Switched from using devfs_add_devsw() to devfs_add_devswf()	1996-03-28 14:31:42 +00:00
tty_subr.c	Attached simple external ddb commands show rtc', show pgrpdump'	1996-09-14 10:53:48 +00:00
tty_tb.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
tty_tty.c	Switched from using devfs_add_devsw() to devfs_add_devswf()	1996-03-28 14:31:42 +00:00
tty.c	Fixed the easy cases of const poisoning in the kernel. Cosmetic.	1996-08-31 16:52:44 +00:00
uipc_domain.c	Modify the kernel to use the new pr_usrreqs interface rather than the old	1996-07-11 16:32:50 +00:00
uipc_mbuf.c	fix handling of external objects referenced by mbufs	1996-08-19 03:32:10 +00:00
uipc_proto.c	Clean up various compiler warnings. Most (if not all) were benign	1996-05-08 04:29:08 +00:00
uipc_sockbuf.c	Fix two bugs I accidently put into the syn code at the last minute	1996-10-11 19:26:42 +00:00
uipc_socket2.c	Fix two bugs I accidently put into the syn code at the last minute	1996-10-11 19:26:42 +00:00
uipc_socket.c	Increase robustness of FreeBSD against high-rate connection attempt	1996-10-07 04:32:42 +00:00
uipc_syscalls.c	Preserve file flags in accept(2).	1996-10-15 19:28:44 +00:00
uipc_usrreq.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
vfs_bio.c	Fix a problem that could cause msync (or many other things) to deadlock.	1996-10-17 03:04:43 +00:00
vfs_cache.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
vfs_cluster.c	Fix 4 problems:	1996-10-06 07:50:05 +00:00
vfs_conf.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
vfs_export.c	I'm not sure why, but Netcon's TFS filesystem code doesn't want to	1996-10-17 17:56:07 +00:00
vfs_extattr.c	In sys/time.h, struct timespec is defined as:	1996-09-19 18:21:32 +00:00
vfs_init.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
vfs_lookup.c	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
vfs_mount.c
vfs_subr.c	I'm not sure why, but Netcon's TFS filesystem code doesn't want to	1996-10-17 17:56:07 +00:00
vfs_syscalls.c	In sys/time.h, struct timespec is defined as:	1996-09-19 18:21:32 +00:00
vfs_vnops.c	Even though this looks like it, this is not a complex code change.	1996-08-21 21:56:23 +00:00
vnode_if.pl
vnode_if.sh	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00
vnode_if.src	Import 4.4BSD-Lite2 onto the vendor branch, note that in the kernel, all	1996-03-11 20:02:06 +00:00