svn commit: r267023 - stable/9/share/man/man4

[Christian Brueffer]

Author: brueffer
Date: Tue Jun  3 19:45:08 2014
New Revision: 267023
URL: http://svnweb.freebsd.org/changeset/base/267023

Log:
  MFC: r266709
  
  Language cleanup.
  
  Reviewed by:	mav, bcr, wblock
  Approved by:	re (gjb)

Modified:
  stable/9/share/man/man4/attimer.4
Directory Properties:
  stable/9/share/man/man4/   (props changed)

Modified: stable/9/share/man/man4/attimer.4
==============================================================================
--- stable/9/share/man/man4/attimer.4	Tue Jun  3 19:25:39 2014	(r267022)
+++ stable/9/share/man/man4/attimer.4	Tue Jun  3 19:45:08 2014	(r267023)
@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd September 14, 2010
+.Dd May 26, 2014
 .Dt ATTIMER 4
 .Os
 .Sh NAME
@@ -37,38 +37,48 @@ The following tunables are settable from
 .Xr loader 8 :
 .Bl -ohang
 .It Va hint.attimer. Ns Ar X Ns Va .clock
-controls event timers functionality support. Setting to 0, disables it.
-Default value is 1.
+controls support for the event timer functionality.
+Setting this value to
+.Dv 0
+disables it.
+The default value is
+.Dv 1 .
 .It Va hint.attimer. Ns Ar X Ns Va .timecounter
-controls time counter functionality support. Setting to 0, disables it.
-Default value is 1.
+controls support for the time counter functionality.
+Setting this value to
+.Dv 0
+disables it.
+The default value is
+.Dv 1 .
 .It Va hw.i8254.freq
-allows to override default counter frequency.
-The same value is also available in run-time via
+allows overriding the default counter frequency.
+The same value is also available at run-time via the
 .Va machdep.i8254_freq
 sysctl.
 .El
 .Sh DESCRIPTION
 This driver uses i8254 Programmable Interval Timer (AT Timer) hardware
-to supply kernel with one time counter and one event timer, and generate
-sound tones for system speaker.
+to supply the kernel with one timecounter and one event timer, and to generate
+sound tones for the system speaker.
 This hardware includes three channels.
-Each channel includes 16bit counter, counting down with known,
+Each channel includes a 16 bit counter which decreases with a known,
 platform-dependent frequency.
 Counters can operate in several different modes, including periodic and
 one-shot.
-Output of each channel has platform-defined wiring: one channel is wired
+The output of each channel has platform-defined wiring: one channel is wired
 to the interrupt controller and may be used as event timer, one channel is
-wired to speaker and used to generate sound tones, and one timer is reserved
+wired to the speaker and used to generate sound tones, and one timer is reserved
 for platform purposes.
 .Pp
-Driver uses single hardware channel to provide both time counter and event
+The
+.Nm
+driver uses a single hardware channel to provide both time counter and event
 timer functionality.
-To make it possible, respective counter must be running in periodic more.
-As result, one-shot event timer mode supported only when time counter
+To make this possible, the respective counter must be running in periodic mode.
+As a result, the one-shot event timer mode is supported only when time counter
 functionality is disabled.
 .Pp
-Event timer provided by the driver is irrelevant to CPU power states.
+The event timer provided by the driver is irrelevant to CPU power states.
 .Sh SEE ALSO
 .Xr apic 4 ,
 .Xr atrtc 4 ,