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root/i-scream/projects/libstatgrab/src/libstatgrab/disk_stats.c

Comparing projects/libstatgrab/src/libstatgrab/disk_stats.c (file contents):
Revision 1.2 by pajs, Thu Feb 20 13:08:45 2003 UTC vs.
Revision 1.31 by ats, Sun Oct 19 02:03:02 2003 UTC

#	Line 1 | Line 1
1		/*
2		* i-scream central monitoring system
3	<	* http://www.i-scream.org.uk
4	<	* Copyright (C) 2000-2002 i-scream
3	>	* http://www.i-scream.org
4	>	* Copyright (C) 2000-2003 i-scream
5		*
6		* This program is free software; you can redistribute it and/or
7		* modify it under the terms of the GNU General Public License
#	Line 22 | Line 22
22		#include "config.h"
23		#endif
24
25	–	#include "statgrab.h"
26	–	#include <stdlib.h>
25		#include <stdio.h>
26	<	#include "ukcprog.h"
26	>	#include <stdlib.h>
27		#include <string.h>
28	+	#include "statgrab.h"
29
30		#ifdef SOLARIS
31		#include <sys/mnttab.h>
33	–	#include <sys/types.h>
32		#include <sys/statvfs.h>
33	<
33	>	#include <kstat.h>
34		#define VALID_FS_TYPES {"ufs", "tmpfs"}
35	+	#endif
36
37	+	#ifdef LINUX
38	+	#include <time.h>
39	+	#include <sys/vfs.h>
40	+	#include <mntent.h>
41	+	#include "tools.h"
42	+	#define VALID_FS_TYPES {"ext2", "ext3", "xfs", "reiserfs", "vfat", "tmpfs"}
43		#endif
44
45	+	#ifdef ALLBSD
46	+	#include <sys/param.h>
47	+	#include <sys/ucred.h>
48	+	#include <sys/mount.h>
49	+	#define VALID_FS_TYPES {"ufs", "mfs", "ffs"}
50	+	#endif
51	+	#ifdef FREEBSD
52	+	#include <sys/dkstat.h>
53	+	#include <devstat.h>
54	+	#endif
55	+
56		#define START_VAL 1
57
58		char *copy_string(char *orig_ptr, const char *newtext){
#	Line 61 | Line 77 | void init_disk_stat(int start, int end, disk_stat_t *d
77
78		disk_stats++;
79		}
64	–
80		}
81
82		disk_stat_t *get_disk_stats(int *entries){
#	Line 71 | Line 86 | disk_stat_t *get_disk_stats(int *entries){
86
87		char *fs_types[] = VALID_FS_TYPES;
88		int x, valid_type;
74	–
89		int num_disks=0;
90	<	struct mnttab mp;
77	<	struct statvfs fs;
90	>	#if defined(LINUX) || defined (SOLARIS)
91		FILE *f;
92	+	#endif
93
94		disk_stat_t *disk_ptr;
95
96	+	#ifdef SOLARIS
97	+	struct mnttab mp;
98	+	struct statvfs fs;
99	+	#endif
100	+	#ifdef LINUX
101	+	struct mntent *mp;
102	+	struct statfs fs;
103	+	#endif
104	+	#ifdef ALLBSD
105	+	int nummnt;
106	+	struct statfs *mp;
107	+	#endif
108	+
109		if(watermark==-1){
110		disk_stats=malloc(START_VAL * sizeof(disk_stat_t));
111		if(disk_stats==NULL){
#	Line 87 | Line 114 | disk_stat_t *get_disk_stats(int *entries){
114		watermark=START_VAL;
115		init_disk_stat(0, watermark-1, disk_stats);
116		}
117	+	#ifdef ALLBSD
118	+	nummnt=getmntinfo(&mp , MNT_LOCAL);
119	+	if (nummnt<=0){
120	+	return NULL;
121	+	}
122	+	for(;nummnt--; mp++){
123	+	valid_type=0;
124	+	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
125	+	if(strcmp(mp->f_fstypename, fs_types[x]) ==0){
126	+	valid_type=1;
127	+	break;
128	+	}
129	+	}
130	+	#endif
131
132	+	#ifdef LINUX
133	+	if ((f=setmntent("/etc/mtab", "r" ))==NULL){
134	+	return NULL;
135	+	}
136
137	+	while((mp=getmntent(f))){
138	+	if((statfs(mp->mnt_dir, &fs)) !=0){
139	+	continue;
140	+	}
141	+
142	+	valid_type=0;
143	+	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
144	+	if(strcmp(mp->mnt_type, fs_types[x]) ==0){
145	+	valid_type=1;
146	+	break;
147	+	}
148	+	}
149	+	#endif
150	+
151	+	#ifdef SOLARIS
152		if ((f=fopen("/etc/mnttab", "r" ))==NULL){
153		return NULL;
154		}
#	Line 96 | Line 156 | disk_stat_t *get_disk_stats(int *entries){
156		if ((statvfs(mp.mnt_mountp, &fs)) !=0){
157		continue;
158		}
99	–
159		valid_type=0;
160		for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
161		if(strcmp(mp.mnt_fstype, fs_types[x]) ==0){
#	Line 104 | Line 163 | disk_stat_t *get_disk_stats(int *entries){
163		break;
164		}
165		}
166	+	#endif
167
168		if(valid_type){
169		if(num_disks>watermark-1){
#	Line 118 | Line 178 | disk_stat_t *get_disk_stats(int *entries){
178		}
179
180		disk_ptr=disk_stats+num_disks;
181	<
181	>	#ifdef ALLBSD
182	>	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->f_mntfromname))==NULL){
183	>	return NULL;
184	>	}
185	>
186	>	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->f_fstypename))==NULL){
187	>	return NULL;
188	>	}
189	>
190	>	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->f_mntonname))==NULL){
191	>	return NULL;
192	>	}
193	>
194	>	disk_ptr->size = (long long)mp->f_bsize * (long long) mp->f_blocks;
195	>	disk_ptr->avail = (long long)mp->f_bsize * (long long) mp->f_bavail;
196	>	disk_ptr->used = (disk_ptr->size) - ((long long)mp->f_bsize * (long long)mp->f_bfree);
197	>
198	>	disk_ptr->total_inodes=(long long)mp->f_files;
199	>	disk_ptr->free_inodes=(long long)mp->f_ffree;
200	>	/* Freebsd doesn't have a "available" inodes */
201	>	disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes;
202	>	#endif
203	>	#ifdef LINUX
204	>	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->mnt_fsname))==NULL){
205	>	return NULL;
206	>	}
207	>
208	>	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->mnt_type))==NULL){
209	>	return NULL;
210	>	}
211	>
212	>	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->mnt_dir))==NULL){
213	>	return NULL;
214	>	}
215	>	disk_ptr->size = (long long)fs.f_bsize * (long long)fs.f_blocks;
216	>	disk_ptr->avail = (long long)fs.f_bsize * (long long)fs.f_bavail;
217	>	disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_bsize * (long long)fs.f_bfree);
218	>
219	>	disk_ptr->total_inodes=(long long)fs.f_files;
220	>	disk_ptr->free_inodes=(long long)fs.f_ffree;
221	>	/* Linux doesn't have a "available" inodes */
222	>	disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes;
223	>	#endif
224	>
225	>	#ifdef SOLARIS
226		/* Memory leak in event of realloc failing */
227		/* Maybe make this char[bigenough] and do strncpy's and put a null in the end?
228	<	Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE woul prob be upwards
229	<	of a k each */
228	>	* Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE would prob
229	>	* be upwards of a k each
230	>	*/
231		if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp.mnt_special))==NULL){
232		return NULL;
233		}
#	Line 142 | Line 247 | disk_stat_t *get_disk_stats(int *entries){
247		disk_ptr->total_inodes=(long long)fs.f_files;
248		disk_ptr->used_inodes=disk_ptr->total_inodes - (long long)fs.f_ffree;
249		disk_ptr->free_inodes=(long long)fs.f_favail;
250	<
250	>	#endif
251		num_disks++;
252		}
253		}
#	Line 150 | Line 255 | disk_stat_t *get_disk_stats(int *entries){
255		*entries=num_disks;
256
257		/* If this fails, there is very little i can do about it, so i'll ignore it :) */
258	+	#if defined(LINUX) || defined(SOLARIS)
259		fclose(f);
260	+	#endif
261
262		return disk_stats;
263
264		}
265	+	void diskio_stat_init(int start, int end, diskio_stat_t *diskio_stats){
266
267	<	diskio_stat_t get_diskio_stats(int *entries){
267	>	for(diskio_stats+=start; start<end; start++){
268	>	diskio_stats->disk_name=NULL;
269	>
270	>	diskio_stats++;
271	>	}
272	>	}
273
274	<	/* Do jibble */
275	<	return NULL;
274	>	diskio_stat_t *diskio_stat_malloc(int needed_entries, int *cur_entries, diskio_stat_t *diskio_stats){
275	>
276	>	if(diskio_stats==NULL){
277	>
278	>	if((diskio_stats=malloc(needed_entries * sizeof(diskio_stat_t)))==NULL){
279	>	return NULL;
280	>	}
281	>	diskio_stat_init(0, needed_entries, diskio_stats);
282	>	*cur_entries=needed_entries;
283	>
284	>	return diskio_stats;
285	>	}
286	>
287	>
288	>	if(*cur_entries<needed_entries){
289	>	diskio_stats=realloc(diskio_stats, (sizeof(diskio_stat_t)*needed_entries));
290	>	if(diskio_stats==NULL){
291	>	return NULL;
292	>	}
293	>	diskio_stat_init(*cur_entries, needed_entries, diskio_stats);
294	>	*cur_entries=needed_entries;
295	>	}
296	>
297	>	return diskio_stats;
298	>	}
299	>
300	>	static diskio_stat_t *diskio_stats=NULL;
301	>	static int num_diskio=0;
302	>
303	>	#ifdef LINUX
304	>	typedef struct {
305	>	int major;
306	>	int minor;
307	>	} partition;
308	>	#endif
309	>
310	>	diskio_stat_t *get_diskio_stats(int *entries){
311	>
312	>	static int sizeof_diskio_stats=0;
313	>	diskio_stat_t *diskio_stats_ptr;
314	>
315	>	#ifdef SOLARIS
316	>	kstat_ctl_t *kc;
317	>	kstat_t *ksp;
318	>	kstat_io_t kios;
319	>	#endif
320	>	#ifdef LINUX
321	>	FILE *f;
322	>	char *line_ptr;
323	>	int major, minor;
324	>	char dev_letter;
325	>	int has_pp_stats = 1;
326	>	static partition *parts = NULL;
327	>	static int alloc_parts = 0;
328	>	int i, n;
329	>	time_t now;
330	>	#endif
331	>	#ifdef FREEBSD
332	>	static struct statinfo stats;
333	>	static int stats_init = 0;
334	>	int counter;
335	>	struct device_selection *dev_sel = NULL;
336	>	int n_selected, n_selections;
337	>	long sel_gen;
338	>	struct devstat *dev_ptr;
339	>	#endif
340	>	#ifdef NETBSD
341	>	/* FIXME get_diskio_stats NYI on NetBSD.
342	>	* See vmstat/dkstats.c in NetBSD source for examples.
343	>	*/
344	>	#endif
345	>	num_diskio=0;
346	>
347	>	#ifdef FREEBSD
348	>	if (!stats_init) {
349	>	stats.dinfo=malloc(sizeof(struct devinfo));
350	>	bzero(stats.dinfo, sizeof(struct devinfo));
351	>	if(stats.dinfo==NULL) return NULL;
352	>	stats_init = 1;
353	>	}
354	>	#ifdef FREEBSD5
355	>	if ((devstat_getdevs(NULL, &stats)) < 0) return NULL;
356	>	/* Not aware of a get all devices, so i said 999. If we ever
357	>	* find a machine with more than 999 disks, then i'll change
358	>	* this number :)
359	>	*/
360	>	if (devstat_selectdevs(&dev_sel, &n_selected, &n_selections, &sel_gen, stats.dinfo->generation, stats.dinfo->devices, stats.dinfo->numdevs, NULL, 0, NULL, 0, DS_SELECT_ONLY, 999, 1) < 0) return NULL;
361	>	#else
362	>	if ((getdevs(&stats)) < 0) return NULL;
363	>	/* Not aware of a get all devices, so i said 999. If we ever
364	>	* find a machine with more than 999 disks, then i'll change
365	>	* this number :)
366	>	*/
367	>	if (selectdevs(&dev_sel, &n_selected, &n_selections, &sel_gen, stats.dinfo->generation, stats.dinfo->devices, stats.dinfo->numdevs, NULL, 0, NULL, 0, DS_SELECT_ONLY, 999, 1) < 0) return NULL;
368	>	#endif
369	>
370	>	for(counter=0;counter<stats.dinfo->numdevs;counter++){
371	>	dev_ptr=&stats.dinfo->devices[dev_sel[counter].position];
372	>
373	>	/* Throw away devices that have done nothing, ever.. Eg "odd"
374	>	* devices.. like mem, proc.. and also doesn't report floppy
375	>	* drives etc unless they are doing stuff :)
376	>	*/
377	>	#ifdef FREEBSD5
378	>	if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue;
379	>	#else
380	>	if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue;
381	>	#endif
382	>	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
383	>	return NULL;
384	>	}
385	>	diskio_stats_ptr=diskio_stats+num_diskio;
386	>
387	>	#ifdef FREEBSD5
388	>	diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ];
389	>	diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE];
390	>	#else
391	>	diskio_stats_ptr->read_bytes=dev_ptr->bytes_read;
392	>	diskio_stats_ptr->write_bytes=dev_ptr->bytes_written;
393	>	#endif
394	>	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
395	>	asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number);
396	>	diskio_stats_ptr->systime=time(NULL);
397	>
398	>	num_diskio++;
399	>	}
400	>	free(dev_sel);
401	>
402	>	#endif
403	>	#ifdef SOLARIS
404	>	if ((kc = kstat_open()) == NULL) {
405	>	return NULL;
406	>	}
407	>
408	>	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
409	>	if (!strcmp(ksp->ks_class, "disk")) {
410	>
411	>	if(ksp->ks_type != KSTAT_TYPE_IO) continue;
412	>	/* We dont want metadevices appearins as num_diskio */
413	>	if(strcmp(ksp->ks_module, "md")==0) continue;
414	>	if((kstat_read(kc, ksp, &kios))==-1){
415	>	}
416	>
417	>	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
418	>	kstat_close(kc);
419	>	return NULL;
420	>	}
421	>	diskio_stats_ptr=diskio_stats+num_diskio;
422	>
423	>	diskio_stats_ptr->read_bytes=kios.nread;
424	>
425	>	diskio_stats_ptr->write_bytes=kios.nwritten;
426	>
427	>	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
428	>
429	>	diskio_stats_ptr->disk_name=strdup(ksp->ks_name);
430	>	diskio_stats_ptr->systime=time(NULL);
431	>	num_diskio++;
432	>	}
433	>	}
434	>
435	>	kstat_close(kc);
436	>	#endif
437	>
438	>	#ifdef LINUX
439	>	num_diskio = 0;
440	>	n = 0;
441	>
442	>	/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels
443	>	have statistics in here too, so we can use those directly. */
444	>
445	>	f = fopen("/proc/partitions", "r");
446	>	if (f == NULL) goto out;
447	>	now = time(NULL);
448	>
449	>	while ((line_ptr = f_read_line(f, "")) != NULL) {
450	>	char name[20];
451	>	char *s;
452	>	long long rsect, wsect;
453	>
454	>	int nr = sscanf(line_ptr,
455	>	" %d %d %*d %19s %*d %*d %lld %*d %*d %*d %lld",
456	>	&major, &minor, name, &rsect, &wsect);
457	>	if (nr < 3) continue;
458	>	if (nr < 5) {
459	>	has_pp_stats = 0;
460	>	rsect = 0;
461	>	wsect = 0;
462	>	}
463	>
464	>	/* Skip device names ending in numbers, since they're
465	>	partitions. */
466	>	s = name;
467	>	while (*s != '\0') s++;
468	>	--s;
469	>	if (*s >= '0' && *s <= '9') continue;
470	>
471	>	diskio_stats = diskio_stat_malloc(n + 1, &sizeof_diskio_stats,
472	>	diskio_stats);
473	>	if (diskio_stats == NULL) goto out;
474	>	if (n >= alloc_parts) {
475	>	alloc_parts += 16;
476	>	parts = realloc(parts, alloc_parts * sizeof *parts);
477	>	if (parts == NULL) {
478	>	alloc_parts = 0;
479	>	goto out;
480	>	}
481	>	}
482	>
483	>	if (diskio_stats[n].disk_name != NULL)
484	>	free(diskio_stats[n].disk_name);
485	>	diskio_stats[n].disk_name = strdup(name);
486	>	diskio_stats[n].read_bytes = rsect * 512;
487	>	diskio_stats[n].write_bytes = wsect * 512;
488	>	diskio_stats[n].systime = now;
489	>	parts[n].major = major;
490	>	parts[n].minor = minor;
491	>
492	>	n++;
493	>	}
494	>
495	>	if (!has_pp_stats) {
496	>	/* This is an older kernel without stats in /proc/partitions.
497	>	Read what we can from /proc/stat instead. */
498	>
499	>	f = fopen("/proc/stat", "r");
500	>	if (f == NULL) goto out;
501	>	now = time(NULL);
502	>
503	>	line_ptr = f_read_line(f, "disk_io:");
504	>	if (line_ptr == NULL) goto out;
505	>
506	>	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
507	>	long long rsect, wsect;
508	>
509	>	if (*++line_ptr == '\0') break;
510	>
511	>	if((sscanf(line_ptr,
512	>	"(%d,%d):(%*d, %*d, %lld, %*d, %lld)",
513	>	&major, &minor, &rsect, &wsect)) != 4) {
514	>	continue;
515	>	}
516	>
517	>	/* Find the corresponding device from earlier.
518	>	Just to add to the fun, "minor" is actually the disk
519	>	number, not the device minor, so we need to figure
520	>	out the real minor number based on the major!
521	>	This list is not exhaustive; if you're running
522	>	an older kernel you probably don't have fancy
523	>	I2O hardware anyway... */
524	>	switch (major) {
525	>	case 3:
526	>	case 21:
527	>	case 22:
528	>	case 33:
529	>	case 34:
530	>	case 36:
531	>	case 56:
532	>	case 57:
533	>	case 88:
534	>	case 89:
535	>	case 90:
536	>	case 91:
537	>	minor *= 64;
538	>	break;
539	>	case 9:
540	>	case 43:
541	>	break;
542	>	default:
543	>	minor *= 16;
544	>	break;
545	>	}
546	>	for (i = 0; i < n; i++) {
547	>	if (major == parts[i].major
548	>	&& minor == parts[i].minor)
549	>	break;
550	>	}
551	>	if (i == n) continue;
552	>
553	>	/* We read the number of blocks. Blocks are stored in
554	>	512 bytes */
555	>	diskio_stats[i].read_bytes = rsect * 512;
556	>	diskio_stats[i].write_bytes = wsect * 512;
557	>	diskio_stats[i].systime = now;
558	>	}
559	>	}
560	>
561	>	num_diskio = n;
562	>	out:
563	>	if (f != NULL) fclose(f);
564	>
565	>	#endif
566	>	*entries=num_diskio;
567	>
568	>	return diskio_stats;
569	>	}
570	>
571	>	diskio_stat_t *get_diskio_stats_diff(int *entries){
572	>	static diskio_stat_t *diskio_stats_diff=NULL;
573	>	static int sizeof_diskio_stats_diff=0;
574	>	diskio_stat_t *diskio_stats_diff_ptr, *diskio_stats_ptr;
575	>	int disks, x, y;
576	>
577	>	if(diskio_stats==NULL){
578	>	diskio_stats_ptr=get_diskio_stats(&disks);
579	>	*entries=disks;
580	>	return diskio_stats_ptr;
581	>	}
582	>
583	>	diskio_stats_diff=diskio_stat_malloc(num_diskio, &sizeof_diskio_stats_diff, diskio_stats_diff);
584	>	if(diskio_stats_diff==NULL){
585	>	return NULL;
586	>	}
587	>
588	>	diskio_stats_diff_ptr=diskio_stats_diff;
589	>	diskio_stats_ptr=diskio_stats;
590	>
591	>	for(disks=0;disks<num_diskio;disks++){
592	>	if(diskio_stats_diff_ptr->disk_name!=NULL){
593	>	free(diskio_stats_diff_ptr->disk_name);
594	>	}
595	>	diskio_stats_diff_ptr->disk_name=strdup(diskio_stats_ptr->disk_name);
596	>	diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes;
597	>	diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes;
598	>	diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime;
599	>
600	>	diskio_stats_diff_ptr++;
601	>	diskio_stats_ptr++;
602	>	}
603	>
604	>	diskio_stats_ptr=get_diskio_stats(&disks);
605	>	diskio_stats_diff_ptr=diskio_stats_diff;
606	>
607	>	for(x=0;x<sizeof_diskio_stats_diff;x++){
608	>
609	>	if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
610	>	diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
611	>	diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
612	>	diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;
613	>	}else{
614	>	diskio_stats_ptr=diskio_stats;
615	>	for(y=0;y<disks;y++){
616	>	if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
617	>	diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
618	>	diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
619	>	diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;
620	>
621	>	break;
622	>	}
623	>
624	>	diskio_stats_ptr++;
625	>	}
626	>	}
627	>
628	>	diskio_stats_ptr++;
629	>	diskio_stats_diff_ptr++;
630	>
631	>	}
632	>
633	>	*entries=sizeof_diskio_stats_diff;
634	>	return diskio_stats_diff;
635		}

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