C++ (Cpp) perf_event_ibs_initの例

コード例 #1

ファイル: perf_event_amd_ibs.c プロジェクト: 0-T-0/ps4-linux

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;
}

コード例 #2

ファイル: perf_event_amd_ibs.c プロジェクト: KenK27/linux

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;
}