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tools/power turbostat: correctly display more than 2 threads/core

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Without this update, turbostat displays only 2 threads per core.
Some processors, such as Xeon Phi, have more.

Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Dasaratharaman Chandramouli 2015-04-15 10:09:50 -07:00 committed by Len Brown
parent ba155e2d21
commit e275b3885d
1 changed files with 51 additions and 20 deletions
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71
tools/power/x86/turbostat/turbostat.c
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@ -1381,12 +1381,41 @@ int parse_int_file(const char *fmt, ...)
}
/*
* cpu_is_first_sibling_in_core(cpu)
* return 1 if given CPU is 1st HT sibling in the core
* get_cpu_position_in_core(cpu)
* return the position of the CPU among its HT siblings in the core
* return -1 if the sibling is not in list
*/
int cpu_is_first_sibling_in_core(int cpu)
int get_cpu_position_in_core(int cpu)
{
return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
char path[64];
FILE *filep;
int this_cpu;
char character;
int i;
sprintf(path,
"/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list",
cpu);
filep = fopen(path, "r");
if (filep == NULL) {
perror(path);
exit(1);
}
for (i = 0; i < topo.num_threads_per_core; i++) {
fscanf(filep, "%d", &this_cpu);
if (this_cpu == cpu) {
fclose(filep);
return i;
}
/* Account for no separator after last thread*/
if (i != (topo.num_threads_per_core - 1))
fscanf(filep, "%c", &character);
}
fclose(filep);
return -1;
}
/*
@ -1412,25 +1441,31 @@ int get_num_ht_siblings(int cpu)
{
char path[80];
FILE *filep;
int sib1, sib2;
int matches;
int sib1;
int matches = 0;
char character;
char str[100];
char *ch;
sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
filep = fopen_or_die(path, "r");
/*
* file format:
* if a pair of number with a character between: 2 siblings (eg. 1-2, or 1,4)
* otherwinse 1 sibling (self).
* A ',' separated or '-' separated set of numbers
* (eg 1-2 or 1,3,4,5)
*/
matches = fscanf(filep, "%d%c%d\n", &sib1, &character, &sib2);
fscanf(filep, "%d%c\n", &sib1, &character);
fseek(filep, 0, SEEK_SET);
fgets(str, 100, filep);
ch = strchr(str, character);
while (ch != NULL) {
matches++;
ch = strchr(ch+1, character);
}
fclose(filep);
if (matches == 3)
return 2;
else
return 1;
return matches+1;
}
/*
@ -2755,13 +2790,9 @@ int initialize_counters(int cpu_id)
my_package_id = get_physical_package_id(cpu_id);
my_core_id = get_core_id(cpu_id);
if (cpu_is_first_sibling_in_core(cpu_id)) {
my_thread_id = 0;
my_thread_id = get_cpu_position_in_core(cpu_id);
if (!my_thread_id)
topo.num_cores++;
} else {
my_thread_id = 1;
}
init_counter(EVEN_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
init_counter(ODD_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);