cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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proc.c (1193B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/* FS-Cache statistics viewing interface
      3 *
      4 * Copyright (C) 2021 Red Hat, Inc. All Rights Reserved.
      5 * Written by David Howells (dhowells@redhat.com)
      6 */
      7
      8#define FSCACHE_DEBUG_LEVEL CACHE
      9#include <linux/module.h>
     10#include <linux/proc_fs.h>
     11#include <linux/seq_file.h>
     12#include "internal.h"
     13
     14/*
     15 * initialise the /proc/fs/fscache/ directory
     16 */
     17int __init fscache_proc_init(void)
     18{
     19	if (!proc_mkdir("fs/fscache", NULL))
     20		goto error_dir;
     21
     22	if (!proc_create_seq("fs/fscache/caches", S_IFREG | 0444, NULL,
     23			     &fscache_caches_seq_ops))
     24		goto error;
     25
     26	if (!proc_create_seq("fs/fscache/volumes", S_IFREG | 0444, NULL,
     27			     &fscache_volumes_seq_ops))
     28		goto error;
     29
     30	if (!proc_create_seq("fs/fscache/cookies", S_IFREG | 0444, NULL,
     31			     &fscache_cookies_seq_ops))
     32		goto error;
     33
     34#ifdef CONFIG_FSCACHE_STATS
     35	if (!proc_create_single("fs/fscache/stats", S_IFREG | 0444, NULL,
     36				fscache_stats_show))
     37		goto error;
     38#endif
     39
     40	return 0;
     41
     42error:
     43	remove_proc_entry("fs/fscache", NULL);
     44error_dir:
     45	return -ENOMEM;
     46}
     47
     48/*
     49 * clean up the /proc/fs/fscache/ directory
     50 */
     51void fscache_proc_cleanup(void)
     52{
     53	remove_proc_subtree("fs/fscache", NULL);
     54}