arch/arm/mach-qcom/platsmp.c

Source file repositories/reference/linux-study-clean/arch/arm/mach-qcom/platsmp.c

File Facts

System
Linux kernel
Corpus path
arch/arm/mach-qcom/platsmp.c
Extension
.c
Size
9219 bytes
Lines
407
Domain
Architecture Layer
Bucket
arch/arm
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

for_each_present_cpu(cpu) {
			if (cpu == smp_processor_id())
				continue;
			set_cpu_present(cpu, false);
		}
		pr_warn("Failed to set CPU boot address, disabling SMP\n");
	}
}

static const struct smp_operations smp_msm8660_ops __initconst = {
	.smp_prepare_cpus	= qcom_smp_prepare_cpus,
	.smp_boot_secondary	= msm8660_boot_secondary,
#ifdef CONFIG_HOTPLUG_CPU
	.cpu_die		= qcom_cpu_die,
#endif
};
CPU_METHOD_OF_DECLARE(qcom_smp, "qcom,gcc-msm8660", &smp_msm8660_ops);

static const struct smp_operations qcom_smp_cortex_a7_ops __initconst = {
	.smp_prepare_cpus	= qcom_smp_prepare_cpus,
	.smp_boot_secondary	= cortex_a7_boot_secondary,
#ifdef CONFIG_HOTPLUG_CPU
	.cpu_die		= qcom_cpu_die,
#endif
};
CPU_METHOD_OF_DECLARE(qcom_smp_msm8226, "qcom,msm8226-smp", &qcom_smp_cortex_a7_ops);
CPU_METHOD_OF_DECLARE(qcom_smp_msm8909, "qcom,msm8909-smp", &qcom_smp_cortex_a7_ops);
CPU_METHOD_OF_DECLARE(qcom_smp_msm8916, "qcom,msm8916-smp", &qcom_smp_cortex_a7_ops);

static const struct smp_operations qcom_smp_kpssv1_ops __initconst = {
	.smp_prepare_cpus	= qcom_smp_prepare_cpus,
	.smp_boot_secondary	= kpssv1_boot_secondary,
#ifdef CONFIG_HOTPLUG_CPU
	.cpu_die		= qcom_cpu_die,
#endif
};
CPU_METHOD_OF_DECLARE(qcom_smp_kpssv1, "qcom,kpss-acc-v1", &qcom_smp_kpssv1_ops);

static const struct smp_operations qcom_smp_kpssv2_ops __initconst = {
	.smp_prepare_cpus	= qcom_smp_prepare_cpus,
	.smp_boot_secondary	= kpssv2_boot_secondary,
#ifdef CONFIG_HOTPLUG_CPU
	.cpu_die		= qcom_cpu_die,
#endif
};
CPU_METHOD_OF_DECLARE(qcom_smp_kpssv2, "qcom,kpss-acc-v2", &qcom_smp_kpssv2_ops);

Annotation

Implementation Notes