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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/fs/cachefiles/proc.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/fs/cachefiles/proc.c')
-rw-r--r-- | ANDROID_3.4.5/fs/cachefiles/proc.c | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/ANDROID_3.4.5/fs/cachefiles/proc.c b/ANDROID_3.4.5/fs/cachefiles/proc.c deleted file mode 100644 index eccd3394..00000000 --- a/ANDROID_3.4.5/fs/cachefiles/proc.c +++ /dev/null @@ -1,134 +0,0 @@ -/* CacheFiles statistics - * - * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. - */ - -#include <linux/module.h> -#include <linux/proc_fs.h> -#include <linux/seq_file.h> -#include "internal.h" - -atomic_t cachefiles_lookup_histogram[HZ]; -atomic_t cachefiles_mkdir_histogram[HZ]; -atomic_t cachefiles_create_histogram[HZ]; - -/* - * display the latency histogram - */ -static int cachefiles_histogram_show(struct seq_file *m, void *v) -{ - unsigned long index; - unsigned x, y, z, t; - - switch ((unsigned long) v) { - case 1: - seq_puts(m, "JIFS SECS LOOKUPS MKDIRS CREATES\n"); - return 0; - case 2: - seq_puts(m, "===== ===== ========= ========= =========\n"); - return 0; - default: - index = (unsigned long) v - 3; - x = atomic_read(&cachefiles_lookup_histogram[index]); - y = atomic_read(&cachefiles_mkdir_histogram[index]); - z = atomic_read(&cachefiles_create_histogram[index]); - if (x == 0 && y == 0 && z == 0) - return 0; - - t = (index * 1000) / HZ; - - seq_printf(m, "%4lu 0.%03u %9u %9u %9u\n", index, t, x, y, z); - return 0; - } -} - -/* - * set up the iterator to start reading from the first line - */ -static void *cachefiles_histogram_start(struct seq_file *m, loff_t *_pos) -{ - if ((unsigned long long)*_pos >= HZ + 2) - return NULL; - if (*_pos == 0) - *_pos = 1; - return (void *)(unsigned long) *_pos; -} - -/* - * move to the next line - */ -static void *cachefiles_histogram_next(struct seq_file *m, void *v, loff_t *pos) -{ - (*pos)++; - return (unsigned long long)*pos > HZ + 2 ? - NULL : (void *)(unsigned long) *pos; -} - -/* - * clean up after reading - */ -static void cachefiles_histogram_stop(struct seq_file *m, void *v) -{ -} - -static const struct seq_operations cachefiles_histogram_ops = { - .start = cachefiles_histogram_start, - .stop = cachefiles_histogram_stop, - .next = cachefiles_histogram_next, - .show = cachefiles_histogram_show, -}; - -/* - * open "/proc/fs/cachefiles/XXX" which provide statistics summaries - */ -static int cachefiles_histogram_open(struct inode *inode, struct file *file) -{ - return seq_open(file, &cachefiles_histogram_ops); -} - -static const struct file_operations cachefiles_histogram_fops = { - .owner = THIS_MODULE, - .open = cachefiles_histogram_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release, -}; - -/* - * initialise the /proc/fs/cachefiles/ directory - */ -int __init cachefiles_proc_init(void) -{ - _enter(""); - - if (!proc_mkdir("fs/cachefiles", NULL)) - goto error_dir; - - if (!proc_create("fs/cachefiles/histogram", S_IFREG | 0444, NULL, - &cachefiles_histogram_fops)) - goto error_histogram; - - _leave(" = 0"); - return 0; - -error_histogram: - remove_proc_entry("fs/cachefiles", NULL); -error_dir: - _leave(" = -ENOMEM"); - return -ENOMEM; -} - -/* - * clean up the /proc/fs/cachefiles/ directory - */ -void cachefiles_proc_cleanup(void) -{ - remove_proc_entry("fs/cachefiles/histogram", NULL); - remove_proc_entry("fs/cachefiles", NULL); -} |