bindprocessor and lsdev

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assign_cpu_to_pset

assign_cpu_to_pset(3)					     Library Functions Manual					     assign_cpu_to_pset(3)

NAME

       assign_cpu_to_pset -  Assigns a processor to a processor set

LIBRARY

       Pset Library (libpset.a)

       Mach Library (libmach.a)

SYNOPSIS

       #include <sys/types.h> #include <sys/processor.h>

       int assign_cpu_to_pset(
	       unsigned long cpu,
	       long pset_id ,
	       long option );

PARAMETERS

       Processor or processors to assign to the specified processor set.  Processor set identifier, which is returned by the create_pset function.
       Specifies a bit mask.  Currently, only the ANY_CPU bit is supported.  If this bit is set, the value specified by the cpu  variable  is  the
       number  of  processors  to  be  assigned to the specified processor set from the default processor set.	If the ANY_CPU bit is not set, the
       value specified by the cpu variable is the mask of processors to be assigned to the processor set.

DESCRIPTION

       The assign_cpu_to_pset function removes processors from their current processor set and assigns them to the processor set specified by  the
       pset_id variable.   This function requires root privileges.

       If  the	ANY_CPU option is specified, the number of processors specified by the cpu variable are assigned from the default processor set to
       the processor set that is specified with the pset_id variable.  If the specified number of processors are not available in the default pro-
       cessor set, an error is returned and no processors are assigned.

       If the ANY_CPU option is not set, the value specified by the cpu variable is a mask of processors to be assigned to the specified processor
       set.  For example, if you specify a cpu value of 6, then processors 2 and 3 are assigned to the processor set.

       Note that processors are not required to start in slot 0 on some platforms. For example, you may see a three-processor system with  proces-
       sors  in  slots 6, 7, and 8.  The console assigns the master processor at power up, which is usually the processor in slot 0 if it is occu-
       pied. However, there is no requirement that slot 0 must be populated or that the master is the first processor on the bus.  In the  example
       of the three-processor (slots 6, 7, and 8) system, the master processor will be the one in slot 6.

       Processor assignments are logged in the /var/adm/wtmp file.

RETURN VALUES

       If  the processor assignment is successful, the assign_cpu_to_pset function returns zero (0).  If the assignment is unsuccessful, the func-
       tion returns a negative number.	Use the print_pset_error function to print a message that describes the error.

FILES

       /var/adm/wtmp

RELATED INFORMATION

       bind_to_cpu(3), create_pset(3), destroy_pset(3), assign_pid_to_pset(3), print_pset_error(3), processor_sets(4), pset_create(1) delim off

															     assign_cpu_to_pset(3)

AIX