diff options
Diffstat (limited to 'drivers/acpi/processor_throttling.c')
-rw-r--r-- | drivers/acpi/processor_throttling.c | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c index ff3632717c5..4a0eec5dd24 100644 --- a/drivers/acpi/processor_throttling.c +++ b/drivers/acpi/processor_throttling.c @@ -32,10 +32,6 @@ #include <linux/init.h> #include <linux/sched.h> #include <linux/cpufreq.h> -#ifdef CONFIG_ACPI_PROCFS -#include <linux/proc_fs.h> -#include <linux/seq_file.h> -#endif #include <asm/io.h> #include <asm/uaccess.h> @@ -1216,113 +1212,3 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr) return result; } -#ifdef CONFIG_ACPI_PROCFS -/* proc interface */ -static int acpi_processor_throttling_seq_show(struct seq_file *seq, - void *offset) -{ - struct acpi_processor *pr = seq->private; - int i = 0; - int result = 0; - - if (!pr) - goto end; - - if (!(pr->throttling.state_count > 0)) { - seq_puts(seq, "<not supported>\n"); - goto end; - } - - result = acpi_processor_get_throttling(pr); - - if (result) { - seq_puts(seq, - "Could not determine current throttling state.\n"); - goto end; - } - - seq_printf(seq, "state count: %d\n" - "active state: T%d\n" - "state available: T%d to T%d\n", - pr->throttling.state_count, pr->throttling.state, - pr->throttling_platform_limit, - pr->throttling.state_count - 1); - - seq_puts(seq, "states:\n"); - if (pr->throttling.acpi_processor_get_throttling == - acpi_processor_get_throttling_fadt) { - for (i = 0; i < pr->throttling.state_count; i++) - seq_printf(seq, " %cT%d: %02d%%\n", - (i == pr->throttling.state ? '*' : ' '), i, - (pr->throttling.states[i].performance ? pr-> - throttling.states[i].performance / 10 : 0)); - } else { - for (i = 0; i < pr->throttling.state_count; i++) - seq_printf(seq, " %cT%d: %02d%%\n", - (i == pr->throttling.state ? '*' : ' '), i, - (int)pr->throttling.states_tss[i]. - freqpercentage); - } - - end: - return 0; -} - -static int acpi_processor_throttling_open_fs(struct inode *inode, - struct file *file) -{ - return single_open(file, acpi_processor_throttling_seq_show, - PDE(inode)->data); -} - -static ssize_t acpi_processor_write_throttling(struct file *file, - const char __user * buffer, - size_t count, loff_t * data) -{ - int result = 0; - struct seq_file *m = file->private_data; - struct acpi_processor *pr = m->private; - char state_string[5] = ""; - char *charp = NULL; - size_t state_val = 0; - char tmpbuf[5] = ""; - - if (!pr || (count > sizeof(state_string) - 1)) - return -EINVAL; - - if (copy_from_user(state_string, buffer, count)) - return -EFAULT; - - state_string[count] = '\0'; - if ((count > 0) && (state_string[count-1] == '\n')) - state_string[count-1] = '\0'; - - charp = state_string; - if ((state_string[0] == 't') || (state_string[0] == 'T')) - charp++; - - state_val = simple_strtoul(charp, NULL, 0); - if (state_val >= pr->throttling.state_count) - return -EINVAL; - - snprintf(tmpbuf, 5, "%zu", state_val); - - if (strcmp(tmpbuf, charp) != 0) - return -EINVAL; - - result = acpi_processor_set_throttling(pr, state_val, false); - if (result) - return result; - - return count; -} - -const struct file_operations acpi_processor_throttling_fops = { - .owner = THIS_MODULE, - .open = acpi_processor_throttling_open_fs, - .read = seq_read, - .write = acpi_processor_write_throttling, - .llseek = seq_lseek, - .release = single_release, -}; -#endif |