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sched_setaffinity.2: Removed discussion of CPU_* macros() 

These macros are now moving to a separate page.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2008-11-12 13:26:47 -05:00
parent 2ce777b42c
commit ad3f4748db
1 changed files with 7 additions and 34 deletions
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41
man2/sched_setaffinity.2
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@ -29,11 +29,13 @@
.\" 2005-05-03 mtk - noted that sched_setaffinity may cause thread .\" 2005-05-03 mtk - noted that sched_setaffinity may cause thread
.\" migration and that CPU affinity is a per-thread attribute. .\" migration and that CPU affinity is a per-thread attribute.
.\" 2006-02-03 mtk -- Major rewrite .\" 2006-02-03 mtk -- Major rewrite
.\" 2008-11-12, mtk, removed CPU_*() macro descriptions to a
.\" separate CPU_SET(3) page.
.\" .\"
.TH SCHED_SETAFFINITY 2 2008-11-12 "Linux" "Linux Programmer's Manual" .TH SCHED_SETAFFINITY 2 2008-11-12 "Linux" "Linux Programmer's Manual"
.SH NAME .SH NAME
sched_setaffinity, sched_getaffinity, CPU_CLR, CPU_ISSET, CPU_SET, CPU_ZERO \ sched_setaffinity, sched_getaffinity \- \
\- set and get a process's CPU affinity mask set and get a process's CPU affinity mask
.SH SYNOPSIS .SH SYNOPSIS
.nf .nf
.B #define _GNU_SOURCE .B #define _GNU_SOURCE
@ -44,14 +46,6 @@ sched_setaffinity, sched_getaffinity, CPU_CLR, CPU_ISSET, CPU_SET, CPU_ZERO \
.sp .sp
.BI "int sched_getaffinity(pid_t " pid ", size_t " cpusetsize , .BI "int sched_getaffinity(pid_t " pid ", size_t " cpusetsize ,
.BI " cpu_set_t *" mask ); .BI " cpu_set_t *" mask );
.sp
.BI "void CPU_CLR(int " cpu ", cpu_set_t *" set );
.br
.BI "int CPU_ISSET(int " cpu ", cpu_set_t *" set );
.br
.BI "void CPU_SET(int " cpu ", cpu_set_t *" set );
.br
.BI "void CPU_ZERO(cpu_set_t *" set );
.fi .fi
.SH DESCRIPTION .SH DESCRIPTION
A process's CPU affinity mask determines the set of CPUs on which A process's CPU affinity mask determines the set of CPUs on which
@ -72,26 +66,8 @@ A CPU affinity mask is represented by the
.I cpu_set_t .I cpu_set_t
structure, a "CPU set", pointed to by structure, a "CPU set", pointed to by
.IR mask . .IR mask .
Four macros are provided to manipulate CPU sets. A set of macros for manipulating CPU sets is described in
.BR CPU_ZERO () .BR CPU_SET (3).
clears a set.
.BR CPU_SET ()
and
.BR CPU_CLR ()
respectively add and remove a given CPU from a set.
.BR CPU_ISSET ()
tests to see if a CPU is part of the set; this is useful after
.BR sched_getaffinity ()
returns.
The first available CPU on the system corresponds to a
.I cpu
value of 0, the next CPU corresponds to a
.I cpu
value of 1, and so on.
The constant
.B CPU_SETSIZE
(1024) specifies a value one greater than the maximum CPU
number that can be stored in a CPU set.
.BR sched_setaffinity () .BR sched_setaffinity ()
sets the CPU affinity mask of the process whose ID is sets the CPU affinity mask of the process whose ID is
@ -178,10 +154,6 @@ In glibc 2.3.3, the
.I cpusetsize .I cpusetsize
argument was removed, but was then restored in glibc 2.3.4, with type argument was removed, but was then restored in glibc 2.3.4, with type
.IR size_t . .IR size_t .
The
.BR CPU_* ()
macros were added in glibc 2.3.3.
.SH "CONFORMING TO" .SH "CONFORMING TO"
These system calls are Linux-specific. These system calls are Linux-specific.
.SH "NOTES" .SH "NOTES"
@ -231,6 +203,7 @@ represent the CPU set bit mask.
.BR sched_getscheduler (2), .BR sched_getscheduler (2),
.BR sched_setscheduler (2), .BR sched_setscheduler (2),
.BR setpriority (2), .BR setpriority (2),
.BR CPU_SET (3),
.BR sched_getcpu (3), .BR sched_getcpu (3),
.BR capabilities (7), .BR capabilities (7),
.BR pthread_setaffinity_np (3), .BR pthread_setaffinity_np (3),