static __init int amd_ibs_init(void)
{
u32 caps;
int ret = -EINVAL;
caps = __get_ibs_caps();
if (!caps)
return -ENODEV; /* ibs not supported by the cpu */
ibs_eilvt_setup();
if (!ibs_eilvt_valid())
goto out;
perf_ibs_pm_init();
cpu_notifier_register_begin();
ibs_caps = caps;
/* make ibs_caps visible to other cpus: */
smp_mb();
smp_call_function(setup_APIC_ibs, NULL, 1);
__perf_cpu_notifier(perf_ibs_cpu_notifier);
cpu_notifier_register_done();
ret = perf_event_ibs_init();
out:
if (ret)
pr_err("Failed to setup IBS, %d\n", ret);
return ret;
}
static __init int amd_ibs_init(void)
{
u32 caps;
int ret = -EINVAL;
caps = __get_ibs_caps();
if (!caps)
return -ENODEV; /* ibs not supported by the cpu */
/*
* Force LVT offset assignment for family 10h: The offsets are
* not assigned by the BIOS for this family, so the OS is
* responsible for doing it. If the OS assignment fails, fall
* back to BIOS settings and try to setup this.
*/
if (boot_cpu_data.x86 == 0x10)
force_ibs_eilvt_setup();
if (!ibs_eilvt_valid())
goto out;
get_online_cpus();
ibs_caps = caps;
/* make ibs_caps visible to other cpus: */
smp_mb();
perf_cpu_notifier(perf_ibs_cpu_notifier);
smp_call_function(setup_APIC_ibs, NULL, 1);
put_online_cpus();
ret = perf_event_ibs_init();
out:
if (ret)
pr_err("Failed to setup IBS, %d\n", ret);
return ret;
}