diff options
Diffstat (limited to 'tools/power')
| -rw-r--r-- | tools/power/x86/turbostat/turbostat.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index 6910773e85a9..1684f4ec627e 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -2496,6 +2496,20 @@ void re_initialize(void) printf("turbostat: re-initialized with num_cpus %d\n", topo.num_cpus); } +void set_max_cpu_num(void) +{ + FILE *filep; + unsigned long dummy; + + topo.max_cpu_num = 0; + filep = fopen_or_die( + "/sys/devices/system/cpu/cpu0/topology/thread_siblings", + "r"); + while (fscanf(filep, "%lx,", &dummy) == 1) + topo.max_cpu_num += 32; + fclose(filep); + topo.max_cpu_num--; /* 0 based */ +} /* * count_cpus() @@ -2503,10 +2517,7 @@ void re_initialize(void) */ int count_cpus(int cpu) { - if (topo.max_cpu_num < cpu) - topo.max_cpu_num = cpu; - - topo.num_cpus += 1; + topo.num_cpus++; return 0; } int mark_cpu_present(int cpu) @@ -4564,8 +4575,8 @@ void topology_probe() } *cpus; /* Initialize num_cpus, max_cpu_num */ + set_max_cpu_num(); topo.num_cpus = 0; - topo.max_cpu_num = 0; for_all_proc_cpus(count_cpus); if (!summary_only && topo.num_cpus > 1) BIC_PRESENT(BIC_CPU); |