diff options
| author | Zhang Rui <rui.zhang@intel.com> | 2010-10-08 05:55:15 (GMT) |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2010-10-16 02:03:17 (GMT) |
| commit | d5c6887c7fbaf7a149c3bf441338fa833c529fb4 (patch) | |
| tree | e112c1904cb23d20b87ffe66e075f3635e4a5ce1 /drivers/acpi/processor_driver.c | |
| parent | 39fe394d05be43481ceac8b3db19dfd5189097f6 (diff) | |
| download | linux-d5c6887c7fbaf7a149c3bf441338fa833c529fb4.tar.xz | |
ACPI processor: make /proc/acpi/processor/*/throttle depends on CONFIG_ACPI_PROCFS
As a feature that would only be used when system is overheating,
the processor t-state control should not be exported to user space.
Make /proc/acpi/processor/*/throttle depends on CONFIG_ACPI_PROCFS,
which is cleared by default.
And we will remove this I/F in 2.6.38.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/processor_driver.c')
| -rw-r--r-- | drivers/acpi/processor_driver.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c index 347eb21..356c320 100644 --- a/drivers/acpi/processor_driver.c +++ b/drivers/acpi/processor_driver.c @@ -40,8 +40,10 @@ #include <linux/pm.h> #include <linux/cpufreq.h> #include <linux/cpu.h> +#ifdef CONFIG_ACPI_PROCFS #include <linux/proc_fs.h> #include <linux/seq_file.h> +#endif #include <linux/dmi.h> #include <linux/moduleparam.h> #include <linux/cpuidle.h> @@ -244,6 +246,7 @@ static int acpi_processor_errata(struct acpi_processor *pr) return result; } +#ifdef CONFIG_ACPI_PROCFS static struct proc_dir_entry *acpi_processor_dir = NULL; static int __cpuinit acpi_processor_add_fs(struct acpi_device *device) @@ -280,7 +283,16 @@ static int acpi_processor_remove_fs(struct acpi_device *device) return 0; } - +#else +static inline int acpi_processor_add_fs(struct acpi_device *device) +{ + return 0; +} +static inline int acpi_processor_remove_fs(struct acpi_device *device) +{ + return 0; +} +#endif /* -------------------------------------------------------------------------- Driver Interface -------------------------------------------------------------------------- */ @@ -842,9 +854,11 @@ static int __init acpi_processor_init(void) memset(&errata, 0, sizeof(errata)); +#ifdef CONFIG_ACPI_PROCFS acpi_processor_dir = proc_mkdir(ACPI_PROCESSOR_CLASS, acpi_root_dir); if (!acpi_processor_dir) return -ENOMEM; +#endif if (!cpuidle_register_driver(&acpi_idle_driver)) { printk(KERN_DEBUG "ACPI: %s registered with cpuidle\n", @@ -871,7 +885,9 @@ static int __init acpi_processor_init(void) out_cpuidle: cpuidle_unregister_driver(&acpi_idle_driver); +#ifdef CONFIG_ACPI_PROCFS remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir); +#endif return result; } @@ -891,7 +907,9 @@ static void __exit acpi_processor_exit(void) cpuidle_unregister_driver(&acpi_idle_driver); +#ifdef CONFIG_ACPI_PROCFS remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir); +#endif return; } |