Commit Graph

67 Commits

Author SHA1 Message Date
John Baldwin
702bfe6507 The devstat(3) manpage claims that only <devstat.h> is needed as a
prerequisite for using this interface.  However, the 'statinfo' struct
actually references CPUSTATES from <sys/resource.h>, so in fact it
requires <sys/resource.h> to compile.  Use a nested include of
<sys/resource.h> to make the code match the docs.

Reported by:	Pietro Cerutti  gahr | gahr.ch
2008-01-31 16:55:12 +00:00
Daniel Eischen
419ecd5dee Bump library versions in preparation for 7.0.
Ok'd by:	kan
2007-05-21 02:49:08 +00:00
Stefan Farfeleder
9dbcd4b0c0 Remove an unused variable.
Reviewed by:	ken
2005-10-04 22:00:35 +00:00
Kenneth D. Merry
4a12d2d126 Remove a reference to compute_stats(), since it is no longer documented at
least.

Submitted by:	osa
MFC after:	1 week
2005-08-10 00:51:36 +00:00
Ken Smith
a84020c2b9 Bump the shared library version number of all libraries that have not
been bumped since RELENG_5.

Reviewed by:	ru
Approved by:	re (not needed for commit check but in principle...)
2005-07-22 17:19:05 +00:00
Philippe Charnier
634eb5fb07 sync function prototype with reality. 2005-07-17 13:33:04 +00:00
Ruslan Ermilov
8b7475ed75 Tidy up the markup.
Approved by:	re (blanket manpages)
2005-06-30 06:35:51 +00:00
Maxime Henrion
7d72cda3d3 Use __func__ throughout devstat.c instead of defining a func_name
variable in each function.
2005-04-26 15:02:01 +00:00
Maxime Henrion
140490e266 Make this compile with GCC4 by fixing a signedness issue.
Reviewed by:	md5(1)
2005-04-26 14:51:09 +00:00
Ruslan Ermilov
1a0a934547 Mechanically kill hard sentence breaks. 2004-07-02 23:52:20 +00:00
Alexander Kabaev
f664b76fe4 Remove the use of cast as lvalue. GCC 3.4 isses a deprecation warning
for this now.
2004-06-25 01:16:02 +00:00
Ruslan Ermilov
47d7e8a96f Fixed style of DPADD and LDADD assignments as per style.Makefile(5). 2004-02-05 22:44:25 +00:00
Bruce Evans
1f85f71570 Include <nlist.h> for nlist-related declarations instead of depending on
namespace pollution in <kvm.h>.
2003-10-13 05:30:20 +00:00
Ruslan Ermilov
fe08efe680 mdoc(7): Use the new feature of the .In macro. 2003-09-08 19:57:22 +00:00
David E. O'Brien
4f4a104ee8 style.Makefile(5) 2003-08-18 15:25:39 +00:00
Poul-Henning Kamp
d2d0b14453 It is not an error to have no devices. 2003-08-17 12:06:44 +00:00
Gordon Tetlow
41d8423f71 Stage 3 of dynamic root support. Make all the libraries needed to run
binaries in /bin and /sbin installed in /lib. Only the versioned files
reside in /lib, the .so symlink continues to live /usr/lib so the
toolchain doesn't need to be modified.
2003-08-17 08:28:46 +00:00
Kenneth D. Merry
50a7fdaed8 Remove MAINTAINER= lines in the makefiles for camcontrol, iostat, libcam
and libdevstat, since the new way of doing things is to just list
maintainership in src/MAINTAINERS.

Also, remove duplicate entries in src/MAINTAINERS for those utilities.  I
already had entries for them.
2003-06-14 05:28:01 +00:00
Ruslan Ermilov
3a5146d9e2 Assorted mdoc(7) fixes.
Approved by:	re (blanket)
2003-05-22 13:02:28 +00:00
Poul-Henning Kamp
0b1b370c47 Add prototype for compute_stats() so that libdevstat is WARNS=4 clean.
Spotted by:	kris
2003-04-19 07:42:13 +00:00
Poul-Henning Kamp
1455c4e2ec If rounding results in -epsilon device busy %, set it to zero. 2003-04-09 07:49:15 +00:00
Poul-Henning Kamp
ec0fa09c8c typo 2003-03-19 14:15:32 +00:00
Poul-Henning Kamp
773865de4e Further unbreak devstat: sort the index array in correct order too. 2003-03-19 14:11:14 +00:00
Poul-Henning Kamp
cb3733b78d ARGH!
Pointy hat to:	phk
2003-03-18 17:05:27 +00:00
Poul-Henning Kamp
0d2fdd7850 Commit ken@' changes to this file: Bump version and append new entries
to stay backwards compatible.
2003-03-18 16:44:10 +00:00
Poul-Henning Kamp
b193011a02 Update to match reality closer. 2003-03-18 13:45:08 +00:00
Poul-Henning Kamp
36eab1f55a Add more devstat calculations, mostly filling in holes, but also adding
a couple of reqests:  DSM_BUSY_PCT and DSM_QUEUE_LENGTH.

I have no further plans for mutilating this API at this point in
time, and will update the man-page to reflect current reality as
the next thing.

Reviewed by:    ken
2003-03-18 09:57:54 +00:00
Poul-Henning Kamp
16830b0cc2 And I managed to make a regression here too.
I have too many source trees :-(
2003-03-15 22:22:11 +00:00
Poul-Henning Kamp
7194d335cf Run a revision of the devstat interface:
Kernel:

Change statistics to use the *uptime() timescale (ie: relative to
boottime) rather than the UTC aligned timescale.  This makes the
device statistics code oblivious to clock steps.

Change timestamps to bintime format, they are cheaper.

Remove the "busy_count", and replace it with two counter fields:
"start_count" and "end_count", which are updated in the down and
up paths respectively.  This removes the locking constraint on
devstat.

Add a timestamp argument to devstat_start_transaction(), this will
normally be a timestamp set by the *_bio() function in bp->bio_t0.
Use this field to calculate duration of I/O operations.

Add two timestamp arguments to devstat_end_transaction(), one is
the current time, a NULL pointer means "take timestamp yourself",
the other is the timestamp of when this transaction started (see
above).

Change calculation of busy_time to operate on "the salami principle":
Only when we are idle, which we can determine by the start+end
counts being identical, do we update the "busy_from" field in the
down path.  In the up path we accumulate the timeslice in busy_time
and update busy_from.

Change the byte_* and num_* fields into two arrays: bytes[] and
operations[].

Userland:

Change the misleading "busy_time" name to be called "snap_time" and
make the time long double since that is what most users need anyway,
fill it using clock_gettime(CLOCK_MONOTONIC) to put it on the same
timescale as the kernel fields.

Change devstat_compute_etime() to operate on struct bintime.

Remove the version 2 legacy interface: the change to bintime makes
compatibility far too expensive.

Fix a bug in systat's "vm" page where boot relative busy times would
be bogus.

Bump __FreeBSD_version to 500107

Review & Collaboration by:	ken
2003-03-15 21:59:06 +00:00
Poul-Henning Kamp
4a8bd1668b Don't tell people to include <sys/dkstat.h> any more.
Pointed out by:	kuriyama
2003-02-19 06:33:37 +00:00
Poul-Henning Kamp
cd9c9ca63d Remove include of <sys/dkstat.h> 2003-02-16 14:08:52 +00:00
Poul-Henning Kamp
1259069021 Premptively include <sys/resource.h> to get the cp_time[CPUSTATES]. 2003-02-16 13:29:28 +00:00
Peter Wemm
224af215a6 Zap now-unused SHLIB_MINOR 2002-09-28 00:25:32 +00:00
David E. O'Brien
be04b6d190 Remove 'register' keyword. 2002-03-21 23:39:28 +00:00
Bruce Evans
0f393d5ccb Fixed wrong arg type in synopsis. 2001-10-03 03:57:42 +00:00
Ruslan Ermilov
32eef9aeb1 mdoc(7) police: Use the new .In macro for #include statements. 2001-10-01 16:09:29 +00:00
Kenneth D. Merry
c3508206b2 Turn on WARNS?= 2 for libdevstat.
Submitted by:	"Sergey A. Osokin" <osa@freebsd.org.ru>
2001-09-23 23:03:23 +00:00
Matthew Dillon
e67f5b9fca Implement __FBSDID() 2001-09-16 21:35:07 +00:00
Kenneth D. Merry
b915499708 Remove a duplicate "that".
Submitted by:	"Sergey A. Osokin" <osa@freebsd.org.ru>
2001-08-24 02:24:58 +00:00
Ruslan Ermilov
265c01df49 mdoc(7) police: Fixed broken xrefs. 2001-08-22 14:16:31 +00:00
Kenneth D. Merry
4fb9d38429 Fix some style inconsistencies introduced in rev 1.10, as well as some
other inconsistencies that I missed in my review of rev 1.7.  Also fix
a cut-n-paste error from an earlier revision.
2001-08-21 05:23:37 +00:00
Brian Somers
6d3e1426db Better snprintf() handling.
Prompted by: bde
2001-08-20 15:43:14 +00:00
Brian Somers
2449bf28ad Handle snprintf() returning -1.
MFC after:	2 weeks
2001-08-20 12:50:21 +00:00
Kenneth D. Merry
884539f701 Implement compute_stats() in terms of devstat_compute_statistics(). This
gets rid of the duplicated code in compute_stats().

Add a new DSM_SKIP statistic type for devstat_compute_statistics() that
causes the subsequent variable argument to be skipped.

Thanks to Sergey Osokin for coding up my idea/code fragment.

Submitted by:	"Sergey A. Osokin" <osa@freebsd.org.ru>
2001-08-18 05:46:59 +00:00
Thomas Moestl
c4a5ef6ef3 Add some features to libdevstat, and overhaul the interface a bit:
1.) prefix all functions in the library with devstat_ (compatability
    functions are available for all functions that were chaned in an
    incompatible way, but are deprecated).
2.) Add a pointer to a kvm_t as the first argument to functions that
    used to get their information via sysctl; they behave the same
    as before when NULL is passed as this argument, otherwise, the
    information is obtained via libkvm using the supplied handle.
3.) Add a new function, devstat_compute_statistics(), that is intended
    to replace the old compute_stats() function. It offers more
    statistics data, and has a more flexible interface.

libdevstat does now require libkvm; a library depedency is added, so
that libkvm only needs to be explicitely specified for statically linked
programs.
The library major version number is bumped.

Submitted by:	Sergey A. Osokin <osa@freebsd.org.ru>, ken (3)
Reviewed by:	ken
2001-08-04 18:25:48 +00:00
Dima Dorfman
7ebcc426ef Remove whitespace at EOL. 2001-07-15 07:53:42 +00:00
Ruslan Ermilov
a307d59838 mdoc(7) police: removed HISTORY info from the .Os call. 2001-07-10 13:41:46 +00:00
Ruslan Ermilov
3ab9a9d0e0 Removed -I${.CURDIR}/.../sys from CFLAGS. 2001-05-18 13:41:42 +00:00
Ruslan Ermilov
4a558355e5 MAN[1-9] -> MAN. 2001-03-27 17:27:19 +00:00
Ruslan Ermilov
d0353b836e mdoc(7) police: split punctuation characters + misc fixes. 2001-02-01 16:38:02 +00:00