- Copy stable/10 (r259064) to releng/10.0 as part of the
10.0-RELEASE cycle.
- Update __FreeBSD_version [1]
- Set branch name to -RC1

[1] 10.0-CURRENT __FreeBSD_version value ended at '55', so
start releng/10.0 at '100' so the branch is started with
a value ending in zero.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

rework old-style functions prototypes
reduce WARNS=6 output

Fix resolving symbol names on ARM.

On ARM, binutils are adding '$a' symbols in the symbol table for
every function (in addition to normal symbol). When gprof(1) looks
up symbol name, it often reads '$a' instead of proper function name,
because it find it first. With this fix, when read symbol name
begins with '$' and previous symbol has the same address, it will
use previous symbol name (which is proper function name).

Obtained from: Semihalf

General mdoc(7) and typo fixes.

PR: 167696
Submitted by: Nobuyuki Koganemaru (kogane!jp.freebsd.org)
MFC after: 3 days

More fixes for correct printf length modifiers usr.bin/gprof.

MFC after: 1 week

In usr.bin/gprof/aout.c, use the correct printf length modifier for a
uint32_t.

MFC after: 1 week

Remove the advertising clause from UCB copyrighted files in usr.bin. This
is in accordance with the information provided at
ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change

Also add $FreeBSD$ to a few files to keep svn happy.

Discussed with: imp, rwatson

Move most of the remaining USD/PSD/SMM papers into share/doc

Build usr.bin/ with WARNS=6 by default.

Also add some missing $FreeBSD$ to keep svn happy.

Add missing #include for string routines.

If running with "-K" really do not information about symbols from the a.out
argument. Before this fix, after searching the currently-running kernel,
we would still search the a.out argument - completely override the in-kernel
list, essentially defeating the K flag's purpose.

PR: 47387
Submitted by: Ryan Beasley <ryanb@goddamnbastard.org>

Remove reference to unimplemented "-c" option.

PR: 119338

Add gprof MIPS MD header and enable building gprof.

Obtained from: Juniper Networks

Add mips support.

Remove alpha-specific stuff.

clone i386.h for powerpc

Catch up with increasing the resolution suitable for high-res kernel
profiling from microseconds to nanoseconds in 1996. Picoseconds are
already needed.

Describe the choice of units for the per-call times in detail.

Improve printing of self times in the flat profile for functions that
appear to be never called:

(1) If a function is never called according to its call count but it
must have been called because its child time is nonzero, then print
it in the flat profile. Previously, if its call count was zero
then we only printed it in the flat profile if its self time was
nonzero.

(2) If a function has a zero call count but has a nonzero self or child
time, then print its total self time in the self time per call
column as a percentage of the total (self + child) time. It is
not possible to print the times per call in this case because the
call count is zero. Previously, this was handled by leaving both
per-call columns blank. The self time is printed in another column
but there was no way to recover the total time.

(1) partially fixes the case of the "never called" function main() and
prepares for (2) to apply to main() and other functions. Profiling
of main() was lost in the conversion from a.out to ELF, so main()'s
call count has always been zero for many years; then in the common
case where main() is a tiny function, it gets no profiling ticks, so
main() was completely lost in the flat profile.

(2) improves mainly cases like kernel threads. Most kernel threads
appear to be never called because they are always started before
userland can run to turn on profiling. As for main(), the fact that
they are called is not very interesting and their callers are
uninteresting, but their relative self time is interesting since they
are long-running.

Almost always printing percentages in the per-call columns would be
more useful than almost always printing 0.0ms. 0.1ms is now a long
time, so only very large functions take that long per call. The accuracy
per call can approach 1-10 nsec provided programs are run for about
100000 times as long as is necessary to get this accuracy with high
resolution kernel profiling.

Expand *n't contractions.

Make sure to return 0 from kernel_getnfile() since if there were an
error, it would exit() (and it needs to return a value).

Use a proper prototype for hertz().

Fix a few cases that relied on 'implicit int' (constraint violation in C99).

Deal with double whitespace.

Fix after rev. 1.24 changes: bump document date, and remove -c
from SYNOPSIS.

Mechanically kill hard sentence breaks.

Retire support for gprof's -c option. All our currently supported
architectures only provide a dummy implementation.

Silence on: current@

Include <string.h> for prototypes of various string functions.

Approved by: das (mentor)

Include <netinet/in.h> for ntoh*() and hton*() prototypes.

Approved by: das (mentor)

Build/install gprof on amd64 as well, after repocopying the MD bits.
Not that it has anything to process yet, but that comes next.

Fixed total disorder of MD includes.

Disorder buffer overflowed by: arm commit

Some arm bits for gprof.

Remove MD bits for unsupported architectures.

Remove 2 more unused doc Makefiles.

Add powerpc.h. Still missing powerpc.[ch] in gprof, but this gets
the MI stuff out of the way.

Approved: re (rwatson)

mdoc(7) police: back out unproved changes in previous revision;
descriptions in the FILES section should be full sentences, as
demonstrated in mdoc(7) and /usr/share/examples/mdoc/.

Approved by: re

Remove done() which was just exit() so use of warn()/err() can be made. Abort
on allocation failure instead of displaying a warning and deferencing NULL
pointer after. Spelling. Add prototypes. Add list of option in synopsis section
of man page, -d is not referenced because available as a compile option. It
should be made a runtime option btw.

Consistently use FBSDID

Fix preprocessor directive syntax (text after #endif).
The style of this program is still atrocious (not fixed).

Check for defined(__i386__) instead of just defined(i386) since the compiler
will be updated to only define(__i386__) for ANSI cleanliness.

Use `The .Nm utility'

Include <stdint.h> for definition of intmax_t and/or uintmax_t.

Make this build on sparc64.

Support runtime specification of the history counter type by whatever
generated the gmon data. The support is currently limited to what is
easy to implement and/or needed:

signedess: signed or insigned
size: 8, 16, 32 or 64 bits
format: a binary integer in gprof's format (gprof is not a cross-tool).

High-resolution kernel profiling uses signed 64-bit counters. Normal
kernel profiling and user profiling use unsigned 16-bit counters but
should use 32-bit ones.

Fixed some misspellings of 2 as sizeof(UNIT) so that they won't break
things when sizeof(UNIT) becomes a runtime parameter. The relevant 2
is the one in profil(2)'s scaling of pc's to bucket numbers:

bucket = (pc - offset) / 2 * profil_scale / 65536

gprof(1) must duplicate this scaling, bug for bug compatibly, so it
must first do an integer division by 2 although this mainly makes
scales larger than 65536 useless. sizeof(UNIT) was already wrong in
gprof4, but there were no problems because the fake profil scale is a
multiple of 2.

There are also some rounding bugs in the scaling, but these are only
problems if profil(2) is used directly to create unusual (and not
useful) scales.

Fixed printf format errors. In printgprof.c, also convert the scale
without possibly losing lots of precision, and print the scale using
%g instead of %d in case it is non-integral. %g might not be the best
format for this.

Added missing copyright. Obtain one and a vendor id from gprof.c. aout.c
was split off from gprof.c in rev.1.7 of the latter. elf.c is mostly new,
but the old copyright sort of applies to it and is better than none.

Use __FBSDID() for the FreeBSD id.

Fixed a missing variable declaration so that gprof compiles with -DDEBUG.

Moved the definition of the machine-independent macro UNITS_TO_CODE
from <number of machines> machine-dependent headers to the one
non-header here it is used so that it is easier to fix. This macro
just divides the machine-dependent offset OFFSET_OF_CODE by the
machine-independent scale factor sizeof(UNIT), as required for bug
for bug compatibility with the scaling of pc's in gprof.c. UNIT is
the type of a profiling counter, and its size has nothing to do with
the correct scale factor except both are usually 2.

Oops, forgot to remove the `beforeinstall' block.

Install files via FILES.

mdoc(7) police: kill whitespace at EOL.

Add -K support to gprof(1), which enables dynamic symbol resolution from
the currently-running kernel (and supercedes an executable file argument
given). With this change, properly-compiled KLD modules are now
able to be profiled.

Obtained from: NAI Labs CBOSS project
Funded by: DARPA

Add ia64 support (stubs, just like i386, alpha)

Add hint about how we name profiled libraries (append _p at the right place).

PR: 8061
Submitted by: Brandon Gillespie <brandon@ice.cold.org>
Reviewed by: joerg, ru
MFC after: 5 weeks

Remove whitespace at EOL.

mdoc(7) police: removed HISTORY info from the .Os call.

* include/elf.h has been repo copied to include/elf-hints.h, and it no
longer includes machine/elf.h.
* consumers of elf.h now use the minimalist elf header possible.

This change is motivated by Binutils 2.11.0 and too much clashing over
our base elf headers and the Binutils elf headers.

Grammar police: "its", not "it's", is the possessive form of "it".

Prepare for mdoc(7)NG.

mdoc(7) police: use the new features of the Nm macro.

Remove single-space hard sentence breaks. These degrade the quality
of the typeset output, tend to make diffs harder to read and provide
bad examples for new-comers to mdoc.

$Id$ -> $FreeBSD$

Enable gprof on alpha.
* alpha.{c,h} are same as i386.{c,h}.
* Force address calculation to be done in long precision(64bit on alpha)
rather than double precision(52bit).

Add $Id$, to make it simpler for members of the translation teams to
track.

The $Id$ line is normally at the bottom of the main comment block in the
man page, separated from the rest of the manpage by an empty comment,
like so;

.\" $Id$
.\"

If the immediately preceding comment is a @(#) format ID marker than the
the $Id$ will line up underneath it with no intervening blank lines.
Otherwise, an additional blank line is inserted.

Approved by: bde

Don't ignore weak symbols.

EGCS assign weak symbols to inline functions it couldn't inline (e.g. virtual
inline functions), template functions, etc. Omitting them result in quite bogus
profile.

Weak symbols created by __weak_reference are not really problem.

Caught by: Ilya Segalovich <iseg@comptek.ru>

Construct the profile file name from the name of the executable. A program
compiled with -pg and run will generate a file <executable-filename>.gmon,
not gmon.out.

PR: bin/8426

Make profiling work for ELF. gprof now autodetects the format of
the executable file, so it will work for both a.out and ELF format
files. I have split the object format specific code into separate
source files. It's cleaner than it was before, but it's still
pretty crufty.

Don't cheat on your make world for this update. A lot of things
have to be rebuilt for it to work, including the compiler and all
of the profiled libraries.

Change MACHINE to MACHINE_ARCH to support MACHINE=pc98.

Don't ignore symbols containing "$". C++ destructors and other
special functions have names containing dollar signs, and ignoring
them causes gprof to produce incorrect and sometimes bizarre results.
The comment in the original code said that dollar signs were excluded
because they are used in Pascal labels. That's not much of an
issue these days.

Revert to original style.

32-bit counters aren't large enough for 100+MHz clocks. Use 64-bit
counters. `4' in GPROF4 and gprof4 now means 8. gprof4 needs to be
recompiled to match the kernel.

Fix typo I introduced during last commit.

Use err(3).

Sort cross references.

Use a (signed) int32_t counter instead of an `unsigned int' counter
for the GPROF4 case. This allows a simpler method to be used for
non-statistical profiling (it allows overhead adjustments to be
subtracted from one counter without harm if that counter goes
negative; otherwise the adjustment would have to be distributed).

32 bit counters were already too small for GPROF4 with a 200MHz
clock. int64_t counters should be used.

Print times/call in ns if hz >= 10e7. hz will be this large for high
resolution profiling on Pentiums. On a 100MHz Pentium, the resolution
is at best 10 ns and actually a few hundred ns, but units of 10's or
100's of ns would be inconvenient and the current units of 1 us are a
bit too coarse.

Correct some man page cross references and file location references.

Xref clocks(7).

Another round of man page cleanups.

Down to only about 100 items left to cleanup! :-)

Implemented non-statistical kernel profiling. This is based on
looking at a high resolution clock for each of the following events:
function call, function return, interrupt entry, interrupt exit,
and interesting branches. The differences between the times of
these events are added at appropriate places in a ordinary histogram
(as if very fast statistical profiling sampled the pc at those
places) so that ordinary gprof can be used to analyze the times.

gmon.h:
Histogram counters need to be 4 bytes for microsecond resolutions.
They will need to be larger for the 586 clock.
The comments were vax-centric and wrong even on vaxes. Does anyone
disagree?

gprof4.c:
The standard gprof should support counters of all integral sizes
and the size of the counter should be in the gmon header. This
hack will do until then. (Use gprof4 -u to examine the results
of non-statistical profiling.)

config/*:
Non-statistical profiling is configured with `config -pp'.
`config -p' still gives ordinary profiling.

kgmon/*:
Non-statistical profiling is enabled with `kgmon -B'. `kgmon -b'
still enables ordinary profiling (and distables non-statistical
profiling) if non-statistical profiling is configured.

Change `install' to `${INSTALL}' so that default install flags can be
specified in the top level Makefiles.

Remove trailing whitespace.

Added much-needed new options -[lL], to suppress printing of either the
call-graph or the flat profile, since often you only want one of them.

New flag -u to suppress functions whose name does not begin with an
underscore. Use it to avoid seeing badsw when profiling the kernel.

Print times more accurately (e.g. usec in %8.0f format instead of
msec in %8.2f format for averages) if hz >= 10000. This should have
no effect now since profhz is only 1024.

This commit was generated by cvs2svn to compensate for changes in r1590,
which included commits to RCS files with non-trunk default branches.

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