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authorAlexey Dobriyan <adobriyan@gmail.com>2009-09-18 15:57:09 -0400
committerIngo Molnar <mingo@elte.hu>2009-09-20 14:15:40 -0400
commit583a22e7c154dc0a3938db522696b4bc7f098f59 (patch)
tree7ba10e2a6935a95138b2c6e2808e9d91eec94ac4 /kernel/profile.c
parent05bafda856092de0705de239c846777bddb94974 (diff)
kernel/profile.c: Switch /proc/irq/prof_cpu_mask to seq_file
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/profile.c')
-rw-r--r--kernel/profile.c45
1 files changed, 24 insertions, 21 deletions
diff --git a/kernel/profile.c b/kernel/profile.c
index 419250ebec4d..a55d3a367ae8 100644
--- a/kernel/profile.c
+++ b/kernel/profile.c
@@ -442,48 +442,51 @@ void profile_tick(int type)
442 442
443#ifdef CONFIG_PROC_FS 443#ifdef CONFIG_PROC_FS
444#include <linux/proc_fs.h> 444#include <linux/proc_fs.h>
445#include <linux/seq_file.h>
445#include <asm/uaccess.h> 446#include <asm/uaccess.h>
446 447
447static int prof_cpu_mask_read_proc(char *page, char **start, off_t off, 448static int prof_cpu_mask_proc_show(struct seq_file *m, void *v)
448 int count, int *eof, void *data)
449{ 449{
450 int len = cpumask_scnprintf(page, count, data); 450 seq_cpumask(m, prof_cpu_mask);
451 if (count - len < 2) 451 seq_putc(m, '\n');
452 return -EINVAL; 452 return 0;
453 len += sprintf(page + len, "\n");
454 return len;
455} 453}
456 454
457static int prof_cpu_mask_write_proc(struct file *file, 455static int prof_cpu_mask_proc_open(struct inode *inode, struct file *file)
458 const char __user *buffer, unsigned long count, void *data) 456{
457 return single_open(file, prof_cpu_mask_proc_show, NULL);
458}
459
460static ssize_t prof_cpu_mask_proc_write(struct file *file,
461 const char __user *buffer, size_t count, loff_t *pos)
459{ 462{
460 struct cpumask *mask = data;
461 unsigned long full_count = count, err;
462 cpumask_var_t new_value; 463 cpumask_var_t new_value;
464 int err;
463 465
464 if (!alloc_cpumask_var(&new_value, GFP_KERNEL)) 466 if (!alloc_cpumask_var(&new_value, GFP_KERNEL))
465 return -ENOMEM; 467 return -ENOMEM;
466 468
467 err = cpumask_parse_user(buffer, count, new_value); 469 err = cpumask_parse_user(buffer, count, new_value);
468 if (!err) { 470 if (!err) {
469 cpumask_copy(mask, new_value); 471 cpumask_copy(prof_cpu_mask, new_value);
470 err = full_count; 472 err = count;
471 } 473 }
472 free_cpumask_var(new_value); 474 free_cpumask_var(new_value);
473 return err; 475 return err;
474} 476}
475 477
478static const struct file_operations prof_cpu_mask_proc_fops = {
479 .open = prof_cpu_mask_proc_open,
480 .read = seq_read,
481 .llseek = seq_lseek,
482 .release = single_release,
483 .write = prof_cpu_mask_proc_write,
484};
485
476void create_prof_cpu_mask(struct proc_dir_entry *root_irq_dir) 486void create_prof_cpu_mask(struct proc_dir_entry *root_irq_dir)
477{ 487{
478 struct proc_dir_entry *entry;
479
480 /* create /proc/irq/prof_cpu_mask */ 488 /* create /proc/irq/prof_cpu_mask */
481 entry = create_proc_entry("prof_cpu_mask", 0600, root_irq_dir); 489 proc_create("prof_cpu_mask", 0600, root_irq_dir, &prof_cpu_mask_proc_fops);
482 if (!entry)
483 return;
484 entry->data = prof_cpu_mask;
485 entry->read_proc = prof_cpu_mask_read_proc;
486 entry->write_proc = prof_cpu_mask_write_proc;
487} 490}
488 491
489/* 492/*