tools/power/cpupower/utils/cpuidle-info.c

Source file repositories/reference/linux-study-clean/tools/power/cpupower/utils/cpuidle-info.c

File Facts

System
Linux kernel
Corpus path
tools/power/cpupower/utils/cpuidle-info.c
Extension
.c
Size
4687 bytes
Lines
216
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

switch (ret) {
		case '?':
			output_param = '?';
			cont = 0;
			break;
		case 's':
			verbose = 0;
			break;
		case -1:
			cont = 0;
			break;
		case 'o':
			if (output_param) {
				output_param = -1;
				cont = 0;
				break;
			}
			output_param = ret;
			break;
		}
	} while (cont);

	switch (output_param) {
	case -1:
		printf(_("You can't specify more than one "
			 "output-specific argument\n"));
		cpuidle_exit(EXIT_FAILURE);
	case '?':
		printf(_("invalid or unknown argument\n"));
		cpuidle_exit(EXIT_FAILURE);
	}

	/* Default is: show output of base_cpu only */
	if (bitmask_isallclear(cpus_chosen))
		bitmask_setbit(cpus_chosen, base_cpu);

	if (output_param == 0)
		cpuidle_general_output();

	for (cpu = bitmask_first(cpus_chosen);
	     cpu <= bitmask_last(cpus_chosen); cpu++) {

		if (!bitmask_isbitset(cpus_chosen, cpu))
			continue;

		printf(_("analyzing CPU %d:\n"), cpu);

		if (sysfs_is_cpu_online(cpu) != 1) {
			printf(_(" *is offline\n"));
			printf("\n");
			continue;
		}

		switch (output_param) {

		case 'o':
			proc_cpuidle_cpu_output(cpu);
			break;
		case 0:
			printf("\n");
			cpuidle_cpu_output(cpu, verbose);
			break;
		}
		printf("\n");
	}
	return EXIT_SUCCESS;
}

Annotation

Implementation Notes