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Revision 9b3e7c9b9ab5c2827c1ecd45327b851a1bd01c2a authored by Linus Torvalds on 22 February 2014, 20:11:54 UTC, committed by Linus Torvalds on 22 February 2014, 20:11:54 UTC 
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
 
Pull perf fixes from Ingo Molnar:
 "Misc fixlets from all around the place"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/uncore: Fix IVT/SNB-EP uncore CBOX NID filter table
  perf/x86: Correctly use FEATURE_PDCM
  perf, nmi: Fix unknown NMI warning
  perf trace: Fix ioctl 'request' beautifier build problems on !(i386 || x86_64) arches
  perf trace: Add fallback definition of EFD_SEMAPHORE
  perf list: Fix checking for supported events on older kernels
  perf tools: Handle PERF_RECORD_HEADER_EVENT_TYPE properly
  perf probe: Do not add offset twice to uprobe address
  perf/x86: Fix Userspace RDPMC switch
  perf/x86/intel/p6: Add userspace RDPMC quirk for PPro
2 parent s 0f0ca14 + a9d3f94
Raw File
proc.c 
/* FS-Cache statistics viewing interface
 *
 * 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 License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */

#define FSCACHE_DEBUG_LEVEL OPERATION
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include "internal.h"

/*
 * initialise the /proc/fs/fscache/ directory
 */
int __init fscache_proc_init(void)
{
	_enter("");

	if (!proc_mkdir("fs/fscache", NULL))
		goto error_dir;

#ifdef CONFIG_FSCACHE_STATS
	if (!proc_create("fs/fscache/stats", S_IFREG | 0444, NULL,
			 &fscache_stats_fops))
		goto error_stats;
#endif

#ifdef CONFIG_FSCACHE_HISTOGRAM
	if (!proc_create("fs/fscache/histogram", S_IFREG | 0444, NULL,
			 &fscache_histogram_fops))
		goto error_histogram;
#endif

#ifdef CONFIG_FSCACHE_OBJECT_LIST
	if (!proc_create("fs/fscache/objects", S_IFREG | 0444, NULL,
			 &fscache_objlist_fops))
		goto error_objects;
#endif

	_leave(" = 0");
	return 0;

#ifdef CONFIG_FSCACHE_OBJECT_LIST
error_objects:
#endif
#ifdef CONFIG_FSCACHE_HISTOGRAM
	remove_proc_entry("fs/fscache/histogram", NULL);
error_histogram:
#endif
#ifdef CONFIG_FSCACHE_STATS
	remove_proc_entry("fs/fscache/stats", NULL);
error_stats:
#endif
	remove_proc_entry("fs/fscache", NULL);
error_dir:
	_leave(" = -ENOMEM");
	return -ENOMEM;
}

/*
 * clean up the /proc/fs/fscache/ directory
 */
void fscache_proc_cleanup(void)
{
#ifdef CONFIG_FSCACHE_OBJECT_LIST
	remove_proc_entry("fs/fscache/objects", NULL);
#endif
#ifdef CONFIG_FSCACHE_HISTOGRAM
	remove_proc_entry("fs/fscache/histogram", NULL);
#endif
#ifdef CONFIG_FSCACHE_STATS
	remove_proc_entry("fs/fscache/stats", NULL);
#endif
	remove_proc_entry("fs/fscache", NULL);
}
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