}
#ifdef FIO_HAVE_CPU_AFFINITY
+int fio_cpus_split(os_cpu_mask_t *mask, unsigned int cpu_index)
+{
+ unsigned int i, index, cpus_in_mask;
+ const long max_cpu = cpus_online();
+
+ cpus_in_mask = fio_cpu_count(mask);
+ cpu_index = cpu_index % cpus_in_mask;
+
+ index = 0;
+ for (i = 0; i < max_cpu; i++) {
+ if (!fio_cpu_isset(mask, i))
+ continue;
+
+ if (cpu_index != index)
+ fio_cpu_clear(mask, i);
+
+ index++;
+ }
+
+ return fio_cpu_count(mask);
+}
+
static int str_cpumask_cb(void *data, unsigned long long *val)
{
struct thread_data *td = data;
.category = FIO_OPT_C_GENERAL,
.group = FIO_OPT_G_CRED,
},
+ {
+ .name = "cpus_allowed_policy",
+ .lname = "CPUs allowed distribution policy",
+ .type = FIO_OPT_STR,
+ .off1 = td_var_offset(cpus_allowed_policy),
+ .help = "Distribution policy for cpus_allowed",
+ .parent = "cpus_allowed",
+ .prio = 1,
+ .posval = {
+ { .ival = "shared",
+ .oval = FIO_CPUS_SHARED,
+ .help = "Mask shared between threads",
+ },
+ { .ival = "split",
+ .oval = FIO_CPUS_SPLIT,
+ .help = "Mask split between threads",
+ },
+ },
+ .category = FIO_OPT_C_GENERAL,
+ .group = FIO_OPT_G_CRED,
+ },
#endif
#ifdef CONFIG_LIBNUMA
{