arch/csky/kernel/cpu-probe.c

Source file repositories/reference/linux-study-clean/arch/csky/kernel/cpu-probe.c

File Facts

System
Linux kernel
Corpus path
arch/csky/kernel/cpu-probe.c
Extension
.c
Size
1709 bytes
Lines
80
Domain
Architecture Layer
Bucket
arch/csky
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

if (!(next >> 28)) {
			while ((mfcr("cr13") >> 28) != i);
			break;
		}
	}

	/* CPU feature regs, setup by bootloader or gdbinit */
	seq_printf(m, "hint (CPU funcs): 0x%08x\n", mfcr_hint());
	seq_printf(m, "ccr  (L1C & MMU): 0x%08x\n", mfcr("cr18"));
	seq_printf(m, "ccr2 (L2C)      : 0x%08x\n", mfcr_ccr2());
	seq_printf(m, "\n");
}

static int c_show(struct seq_file *m, void *v)
{
	int cpu;

	for_each_online_cpu(cpu)
		smp_call_function_single(cpu, percpu_print, m, true);

#ifdef CSKY_ARCH_VERSION
	seq_printf(m, "arch-version : %s\n", CSKY_ARCH_VERSION);
	seq_printf(m, "\n");
#endif

	return 0;
}

static void *c_start(struct seq_file *m, loff_t *pos)
{
	return *pos < 1 ? (void *)1 : NULL;
}

static void *c_next(struct seq_file *m, void *v, loff_t *pos)
{
	++*pos;
	return NULL;
}

static void c_stop(struct seq_file *m, void *v) {}

const struct seq_operations cpuinfo_op = {
	.start	= c_start,
	.next	= c_next,
	.stop	= c_stop,
	.show	= c_show,
};

Annotation

Implementation Notes