info.h File Reference

#include "spebase.h"

Include dependency graph for info.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Macros
#define	THREADS_PER_BE   2

Functions
int	_base_spe_count_physical_cpus (int cpu_node)
int	_base_spe_count_physical_spes (int cpu_node)
int	_base_spe_count_usable_spes (int cpu_node)

Macro Definition Documentation

#define THREADS_PER_BE   2

Definition at line 25 of file info.h.

Referenced by _base_spe_count_physical_cpus().

Function Documentation

int _base_spe_count_physical_cpus

(

int

cpu_node)

Definition at line 30 of file info.c.

References DEBUG_PRINTF, and THREADS_PER_BE.

Referenced by _base_spe_count_physical_spes(), and _base_spe_cpu_info_get().

{
        const char    *buff = "/sys/devices/system/cpu";
        DIR     *dirp;
        int ret = -2;
        struct  dirent  *dptr;

        DEBUG_PRINTF ("spe_count_physical_cpus()\n");
        
        // make sure, cpu_node is in the correct range
        if (cpu_node != -1) {
                errno = EINVAL;
                return -1;
        }

        // Count number of CPUs in /sys/devices/system/cpu
        if((dirp=opendir(buff))==NULL) {
                fprintf(stderr,"Error opening %s ",buff);
                perror("dirlist");
                errno = EINVAL;
                return -1;
        }
    while((dptr=readdir(dirp))) {
                ret++;
        }
        closedir(dirp);
        return ret/THREADS_PER_BE; 
}

int _base_spe_count_physical_spes

(

int

cpu_node)

Definition at line 71 of file info.c.

References _base_spe_count_physical_cpus(), and DEBUG_PRINTF.

Referenced by _base_spe_count_usable_spes(), and _base_spe_cpu_info_get().

{
        const char      *buff = "/sys/devices/system/spu";
        DIR     *dirp;
        int ret = -2;
        struct  dirent  *dptr;
        int no_of_bes;

        DEBUG_PRINTF ("spe_count_physical_spes()\n");

        // make sure, cpu_node is in the correct range
        no_of_bes = _base_spe_count_physical_cpus(-1);
        if (cpu_node < -1 || cpu_node >= no_of_bes ) {
                errno = EINVAL;
                return -1;
        }

        // Count number of SPUs in /sys/devices/system/spu
        if((dirp=opendir(buff))==NULL) {
                fprintf(stderr,"Error opening %s ",buff);
                perror("dirlist");
                errno = EINVAL;
                return -1;
        }
    while((dptr=readdir(dirp))) {
                ret++;
        }
        closedir(dirp);

        if(cpu_node != -1) ret /= no_of_bes; // FIXME
        return ret;
}

Here is the call graph for this function:

int _base_spe_count_usable_spes

(

int

cpu_node)

Definition at line 62 of file info.c.

References _base_spe_count_physical_spes().

Referenced by _base_spe_cpu_info_get().

{
        return _base_spe_count_physical_spes(cpu_node); // FIXME
}

Here is the call graph for this function: