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77 lines
1.7 KiB
77 lines
1.7 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* FS-Cache statistics viewing interface |
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* |
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* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. |
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* Written by David Howells ([email protected]) |
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*/ |
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#define FSCACHE_DEBUG_LEVEL OPERATION |
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#include <linux/module.h> |
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#include <linux/proc_fs.h> |
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#include <linux/seq_file.h> |
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#include "internal.h" |
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/* |
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* initialise the /proc/fs/fscache/ directory |
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*/ |
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int __init fscache_proc_init(void) |
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{ |
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_enter(""); |
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if (!proc_mkdir("fs/fscache", NULL)) |
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goto error_dir; |
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#ifdef CONFIG_FSCACHE_STATS |
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if (!proc_create_single("fs/fscache/stats", S_IFREG | 0444, NULL, |
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fscache_stats_show)) |
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goto error_stats; |
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#endif |
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#ifdef CONFIG_FSCACHE_HISTOGRAM |
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if (!proc_create_seq("fs/fscache/histogram", S_IFREG | 0444, NULL, |
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&fscache_histogram_ops)) |
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goto error_histogram; |
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#endif |
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#ifdef CONFIG_FSCACHE_OBJECT_LIST |
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if (!proc_create("fs/fscache/objects", S_IFREG | 0444, NULL, |
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&fscache_objlist_proc_ops)) |
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goto error_objects; |
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#endif |
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_leave(" = 0"); |
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return 0; |
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#ifdef CONFIG_FSCACHE_OBJECT_LIST |
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error_objects: |
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#endif |
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#ifdef CONFIG_FSCACHE_HISTOGRAM |
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remove_proc_entry("fs/fscache/histogram", NULL); |
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error_histogram: |
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#endif |
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#ifdef CONFIG_FSCACHE_STATS |
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remove_proc_entry("fs/fscache/stats", NULL); |
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error_stats: |
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#endif |
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remove_proc_entry("fs/fscache", NULL); |
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error_dir: |
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_leave(" = -ENOMEM"); |
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return -ENOMEM; |
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} |
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/* |
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* clean up the /proc/fs/fscache/ directory |
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*/ |
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void fscache_proc_cleanup(void) |
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{ |
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#ifdef CONFIG_FSCACHE_OBJECT_LIST |
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remove_proc_entry("fs/fscache/objects", NULL); |
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#endif |
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#ifdef CONFIG_FSCACHE_HISTOGRAM |
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remove_proc_entry("fs/fscache/histogram", NULL); |
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#endif |
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#ifdef CONFIG_FSCACHE_STATS |
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remove_proc_entry("fs/fscache/stats", NULL); |
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#endif |
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remove_proc_entry("fs/fscache", NULL); |
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}
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