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Diffstat (limited to 'tools/power/x86/turbostat/turbostat.c')
-rw-r--r--tools/power/x86/turbostat/turbostat.c28
1 files changed, 26 insertions, 2 deletions
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index ab2f682fd44..d5d6a3dc9ba 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -73,8 +73,8 @@ int backwards_count;
char *progname;
int num_cpus;
-cpu_set_t *cpu_mask;
-size_t cpu_mask_size;
+cpu_set_t *cpu_present_set, *cpu_mask;
+size_t cpu_present_setsize, cpu_mask_size;
struct counters {
unsigned long long tsc; /* per thread */
@@ -103,6 +103,12 @@ struct timeval tv_even;
struct timeval tv_odd;
struct timeval tv_delta;
+int mark_cpu_present(int pkg, int core, int cpu)
+{
+ CPU_SET_S(cpu, cpu_present_setsize, cpu_present_set);
+ return 0;
+}
+
/*
* cpu_mask_init(ncpus)
*
@@ -118,6 +124,18 @@ void cpu_mask_init(int ncpus)
}
cpu_mask_size = CPU_ALLOC_SIZE(ncpus);
CPU_ZERO_S(cpu_mask_size, cpu_mask);
+
+ /*
+ * Allocate and initialize cpu_present_set
+ */
+ cpu_present_set = CPU_ALLOC(ncpus);
+ if (cpu_present_set == NULL) {
+ perror("CPU_ALLOC");
+ exit(3);
+ }
+ cpu_present_setsize = CPU_ALLOC_SIZE(ncpus);
+ CPU_ZERO_S(cpu_present_setsize, cpu_present_set);
+ for_all_cpus(mark_cpu_present);
}
void cpu_mask_uninit()
@@ -125,6 +143,9 @@ void cpu_mask_uninit()
CPU_FREE(cpu_mask);
cpu_mask = NULL;
cpu_mask_size = 0;
+ CPU_FREE(cpu_present_set);
+ cpu_present_set = NULL;
+ cpu_present_setsize = 0;
}
int cpu_migrate(int cpu)
@@ -1047,6 +1068,9 @@ int fork_it(char **argv)
int retval;
pid_t child_pid;
get_counters(cnt_even);
+
+ /* clear affinity side-effect of get_counters() */
+ sched_setaffinity(0, cpu_present_setsize, cpu_present_set);
gettimeofday(&tv_even, (struct timezone *)NULL);
child_pid = fork();