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2874c5fd28
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
78 lines
1.7 KiB
C
78 lines
1.7 KiB
C
// 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 (dhowells@redhat.com)
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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_fops))
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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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