[dragonfly.git] / test / debug / vmpageinfo.c

/*
 * VMPAGEINFO.C
 *
 * cc -I/usr/src/sys vmpageinfo.c -o /usr/local/bin/vmpageinfo -lkvm
 *
 * vmpageinfo
 *
 * Validate the vm_page_buckets[] hash array against the vm_page_array
 *
 *
 * Copyright (c) 2004 The DragonFly Project.  All rights reserved.
 * 
 * This code is derived from software contributed to The DragonFly Project
 * by Matthew Dillon <dillon@backplane.com>
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name of The DragonFly Project nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific, prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $DragonFly: src/test/debug/vmpageinfo.c,v 1.2 2006/05/23 01:00:05 dillon Exp $
 */

#define _KERNEL_STRUCTURES_
#include <sys/param.h>
#include <sys/user.h>
#include <sys/malloc.h>
#include <sys/signalvar.h>
#include <sys/vnode.h>
#include <sys/namecache.h>

#include <vm/vm.h>
#include <vm/vm_page.h>
#include <vm/vm_kern.h>
#include <vm/vm_page.h>
#include <vm/vm_object.h>
#include <vm/swap_pager.h>
#include <vm/vnode_pager.h>

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <kvm.h>
#include <nlist.h>
#include <getopt.h>

struct nlist Nl[] = {
#if 0
    { "_vm_page_buckets" },
    { "_vm_page_hash_mask" },
#endif
    { "_vm_page_array" },
    { "_vm_page_array_size" },
    { NULL }
};

int debugopt;
int verboseopt;
#if 0
struct vm_page **vm_page_buckets;
int vm_page_hash_mask;
#endif
struct vm_page *vm_page_array;
int vm_page_array_size;

void checkpage(kvm_t *kd, vm_page_t mptr, vm_page_t m, struct vm_object *obj);
void kkread(kvm_t *kd, u_long addr, void *buf, size_t nbytes);

int
main(int ac, char **av)
{
    const char *corefile = NULL;
    const char *sysfile = NULL;
    vm_page_t mptr;
    struct vm_page m;
    struct vm_object obj;
    kvm_t *kd;
    int ch;
    int hv;
    int i;
    const char *qstr;
    const char *ostr;

    while ((ch = getopt(ac, av, "M:N:dv")) != -1) {
	switch(ch) {
	case 'd':
	    ++debugopt;
	    break;
	case 'v':
	    ++verboseopt;
	    break;
	case 'M':
	    corefile = optarg;
	    break;
	case 'N':
	    sysfile = optarg;
	    break;
	default:
	    fprintf(stderr, "%s [-M core] [-N system]\n", av[0]);
	    exit(1);
	}
    }
    ac -= optind;
    av += optind;

    if ((kd = kvm_open(sysfile, corefile, NULL, O_RDONLY, "kvm:")) == NULL) {
	perror("kvm_open");
	exit(1);
    }
    if (kvm_nlist(kd, Nl) != 0) {
	perror("kvm_nlist");
	exit(1);
    }

#if 0
    kkread(kd, Nl[0].n_value, &vm_page_buckets, sizeof(vm_page_buckets));
    kkread(kd, Nl[1].n_value, &vm_page_hash_mask, sizeof(vm_page_hash_mask));
#endif
    kkread(kd, Nl[0].n_value, &vm_page_array, sizeof(vm_page_array));
    kkread(kd, Nl[1].n_value, &vm_page_array_size, sizeof(vm_page_array_size));

    /*
     * Scan the vm_page_array validating all pages with associated objects
     */
    for (i = 0; i < vm_page_array_size; ++i) {
	if (debugopt) {
	    printf("page %d\r", i);
	    fflush(stdout);
	}
	kkread(kd, (u_long)&vm_page_array[i], &m, sizeof(m));
	if (m.object) {
	    kkread(kd, (u_long)m.object, &obj, sizeof(obj));
	    checkpage(kd, &vm_page_array[i], &m, &obj);
	}
	if (verboseopt) {
	    if (m.queue >= PQ_HOLD) {
		qstr = "HOLD";
	    } else if (m.queue >= PQ_CACHE) {
		qstr = "CACHE";
	    } else if (m.queue >= PQ_ACTIVE) {
		qstr = "ACTIVE";
	    } else if (m.queue >= PQ_INACTIVE) {
		qstr = "INACTIVE";
	    } else if (m.queue >= PQ_FREE) {
		qstr = "FREE";
	    } else {
		qstr = "NONE";
	    } 
	    printf("page %p obj %p/%-8jd val=%02x dty=%02x hold=%d "
		   "wire=%-2d act=%-3d busy=%d %8s",
		&vm_page_array[i],
		m.object,
		(intmax_t)m.pindex,
		m.valid,
		m.dirty,
		m.hold_count,
		m.wire_count,
		m.act_count,
		m.busy,
		qstr
	    );
	    switch(obj.type) {
	    case OBJT_DEFAULT:
		ostr = "default";
		break;
	    case OBJT_SWAP:
		ostr = "swap";
		break;
	    case OBJT_VNODE:
		ostr = "vnode";
		break;
	    case OBJT_DEVICE:
		ostr = "device";
		break;
	    case OBJT_PHYS:
		ostr = "phys";
		break;
	    case OBJT_DEAD:
		ostr = "dead";
		break;
	    default:
		ostr = "unknown";
		break;
	    }
	    printf(" %-7s", ostr);
	    if (m.flags & PG_BUSY)
		printf(" BUSY");
	    if (m.flags & PG_WANTED)
		printf(" WANTED");
	    if (m.flags & PG_WINATCFLS)
		printf(" WINATCFLS");
	    if (m.flags & PG_FICTITIOUS)
		printf(" FICTITIOUS");
	    if (m.flags & PG_WRITEABLE)
		printf(" WRITEABLE");
	    if (m.flags & PG_MAPPED)
		printf(" MAPPED");
	    if (m.flags & PG_ZERO)
		printf(" ZERO");
	    if (m.flags & PG_REFERENCED)
		printf(" REFERENCED");
	    if (m.flags & PG_CLEANCHK)
		printf(" CLEANCHK");
	    if (m.flags & PG_SWAPINPROG)
		printf(" SWAPINPROG");
	    if (m.flags & PG_NOSYNC)
		printf(" NOSYNC");
	    if (m.flags & PG_UNMANAGED)
		printf(" UNMANAGED");
	    if (m.flags & PG_MARKER)
		printf(" MARKER");
	    if (m.flags & PG_RAM)
		printf(" RAM");
	    if (m.flags & PG_SWAPPED)
		printf(" SWAPPED");
	    printf("\n");
	}
    }
    if (debugopt || verboseopt)
	printf("\n");

#if 0
    /*
     * Scan the vm_page_buckets array validating all pages found
     */
    for (i = 0; i <= vm_page_hash_mask; ++i) {
	if (debugopt) {
	    printf("index %d\r", i);
	    fflush(stdout);
	}
	kkread(kd, (u_long)&vm_page_buckets[i], &mptr, sizeof(mptr));
	while (mptr) {
	    kkread(kd, (u_long)mptr, &m, sizeof(m));
	    if (m.object) {
		kkread(kd, (u_long)m.object, &obj, sizeof(obj));
		hv = ((uintptr_t)m.object + m.pindex) ^ obj.hash_rand;
		hv &= vm_page_hash_mask;
		if (i != hv)
		    printf("vm_page_buckets[%d] ((struct vm_page *)%p)"
			" should be in bucket %d\n", i, mptr, hv);
		checkpage(kd, mptr, &m, &obj);
	    } else {
		printf("vm_page_buckets[%d] ((struct vm_page *)%p)"
			" has no object\n", i, mptr);
	    }
	    mptr = m.hnext;
	}
    }
#endif
    if (debugopt)
	printf("\n");
    return(0);
}

/*
 * A page with an object.
 */
void
checkpage(kvm_t *kd, vm_page_t mptr, vm_page_t m, struct vm_object *obj)
{
#if 0
    struct vm_page scan;
    vm_page_t scanptr;
    int hv;

    hv = ((uintptr_t)m->object + m->pindex) ^ obj->hash_rand;
    hv &= vm_page_hash_mask;
    kkread(kd, (u_long)&vm_page_buckets[hv], &scanptr, sizeof(scanptr));
    while (scanptr) {
	if (scanptr == mptr)
	    break;
	kkread(kd, (u_long)scanptr, &scan, sizeof(scan));
	scanptr = scan.hnext;
    }
    if (scanptr) {
	if (debugopt > 1)
	    printf("good checkpage %p bucket %d\n", mptr, hv);
    } else {
	printf("vm_page_buckets[%d] ((struct vm_page *)%p)"
		" page not found in bucket list\n", hv, mptr);
    }
#endif
}

void
kkread(kvm_t *kd, u_long addr, void *buf, size_t nbytes)
{
    if (kvm_read(kd, addr, buf, nbytes) != nbytes) {
        perror("kvm_read");
        exit(1);
    }
}
Commit	Line	Data
84b7e3cd MD	1	/*
	2	* VMPAGEINFO.C
	3	*
	4	* cc -I/usr/src/sys vmpageinfo.c -o /usr/local/bin/vmpageinfo -lkvm
	5	*
	6	* vmpageinfo
	7	*
	8	* Validate the vm_page_buckets[] hash array against the vm_page_array
	9	*
	10	*
	11	* Copyright (c) 2004 The DragonFly Project. All rights reserved.
	12	*
	13	* This code is derived from software contributed to The DragonFly Project
	14	* by Matthew Dillon <dillon@backplane.com>
	15	*
	16	* Redistribution and use in source and binary forms, with or without
	17	* modification, are permitted provided that the following conditions
	18	* are met:
	19	*
	20	* 1. Redistributions of source code must retain the above copyright
	21	* notice, this list of conditions and the following disclaimer.
	22	* 2. Redistributions in binary form must reproduce the above copyright
	23	* notice, this list of conditions and the following disclaimer in
	24	* the documentation and/or other materials provided with the
	25	* distribution.
	26	* 3. Neither the name of The DragonFly Project nor the names of its
	27	* contributors may be used to endorse or promote products derived
	28	* from this software without specific, prior written permission.
	29	*
	30	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	31	* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	32	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
	33	* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
	34	* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
	35	* INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
	36	* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	37	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
	38	* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
	39	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
	40	* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	41	* SUCH DAMAGE.
	42	*
e36e284d	43	* $DragonFly: src/test/debug/vmpageinfo.c,v 1.2 2006/05/23 01:00:05 dillon Exp $
84b7e3cd MD	44	*/
	45
	46	#define _KERNEL_STRUCTURES_
	47	#include <sys/param.h>
	48	#include <sys/user.h>
	49	#include <sys/malloc.h>
	50	#include <sys/signalvar.h>
	51	#include <sys/vnode.h>
	52	#include <sys/namecache.h>
	53
	54	#include <vm/vm.h>
	55	#include <vm/vm_page.h>
	56	#include <vm/vm_kern.h>
	57	#include <vm/vm_page.h>
	58	#include <vm/vm_object.h>
	59	#include <vm/swap_pager.h>
	60	#include <vm/vnode_pager.h>
	61
	62	#include <stdio.h>
	63	#include <stdlib.h>
	64	#include <string.h>
	65	#include <fcntl.h>
	66	#include <kvm.h>
	67	#include <nlist.h>
	68	#include <getopt.h>
	69
	70	struct nlist Nl[] = {
069cac03	71	#if 0
84b7e3cd MD	72	{ "_vm_page_buckets" },
84b7e3cd MD	73	{ "_vm_page_hash_mask" },
069cac03	74	#endif
84b7e3cd MD	75	{ "_vm_page_array" },
	76	{ "_vm_page_array_size" },
	77	{ NULL }
	78	};
	79
	80	int debugopt;
e36e284d	81	int verboseopt;
069cac03	82	#if 0
84b7e3cd MD	83	struct vm_page **vm_page_buckets;
84b7e3cd MD	84	int vm_page_hash_mask;
069cac03	85	#endif
84b7e3cd MD	86	struct vm_page *vm_page_array;
	87	int vm_page_array_size;
	88
	89	void checkpage(kvm_t kd, vm_page_t mptr, vm_page_t m, struct vm_object obj);
	90	void kkread(kvm_t kd, u_long addr, void buf, size_t nbytes);
	91
	92	int
	93	main(int ac, char **av)
	94	{
	95	const char *corefile = NULL;
	96	const char *sysfile = NULL;
	97	vm_page_t mptr;
	98	struct vm_page m;
	99	struct vm_object obj;
	100	kvm_t *kd;
	101	int ch;
	102	int hv;
	103	int i;
e36e284d MD	104	const char *qstr;
e36e284d MD	105	const char *ostr;
84b7e3cd	106
e36e284d	107	while ((ch = getopt(ac, av, "M:N:dv")) != -1) {
84b7e3cd MD	108	switch(ch) {
	109	case 'd':
	110	++debugopt;
	111	break;
e36e284d MD	112	case 'v':
	113	++verboseopt;
	114	break;
84b7e3cd MD	115	case 'M':
	116	corefile = optarg;
	117	break;
	118	case 'N':
	119	sysfile = optarg;
	120	break;
	121	default:
	122	fprintf(stderr, "%s [-M core] [-N system]\n", av[0]);
	123	exit(1);
	124	}
	125	}
	126	ac -= optind;
	127	av += optind;
	128
	129	if ((kd = kvm_open(sysfile, corefile, NULL, O_RDONLY, "kvm:")) == NULL) {
	130	perror("kvm_open");
	131	exit(1);
	132	}
	133	if (kvm_nlist(kd, Nl) != 0) {
	134	perror("kvm_nlist");
	135	exit(1);
	136	}
	137
069cac03	138	#if 0
84b7e3cd MD	139	kkread(kd, Nl[0].n_value, &vm_page_buckets, sizeof(vm_page_buckets));
84b7e3cd MD	140	kkread(kd, Nl[1].n_value, &vm_page_hash_mask, sizeof(vm_page_hash_mask));
069cac03 MD	141	#endif
	142	kkread(kd, Nl[0].n_value, &vm_page_array, sizeof(vm_page_array));
	143	kkread(kd, Nl[1].n_value, &vm_page_array_size, sizeof(vm_page_array_size));
84b7e3cd MD	144
	145	/*
	146	* Scan the vm_page_array validating all pages with associated objects
	147	*/
	148	for (i = 0; i < vm_page_array_size; ++i) {
	149	if (debugopt) {
	150	printf("page %d\r", i);
	151	fflush(stdout);
	152	}
	153	kkread(kd, (u_long)&vm_page_array[i], &m, sizeof(m));
	154	if (m.object) {
	155	kkread(kd, (u_long)m.object, &obj, sizeof(obj));
	156	checkpage(kd, &vm_page_array[i], &m, &obj);
	157	}
e36e284d MD	158	if (verboseopt) {
	159	if (m.queue >= PQ_HOLD) {
	160	qstr = "HOLD";
	161	} else if (m.queue >= PQ_CACHE) {
	162	qstr = "CACHE";
	163	} else if (m.queue >= PQ_ACTIVE) {
	164	qstr = "ACTIVE";
	165	} else if (m.queue >= PQ_INACTIVE) {
	166	qstr = "INACTIVE";
	167	} else if (m.queue >= PQ_FREE) {
	168	qstr = "FREE";
	169	} else {
	170	qstr = "NONE";
	171	}
069cac03 MD	172	printf("page %p obj %p/%-8jd val=%02x dty=%02x hold=%d "
069cac03 MD	173	"wire=%-2d act=%-3d busy=%d %8s",
e36e284d	174	&vm_page_array[i],
069cac03 MD	175	m.object,
069cac03 MD	176	(intmax_t)m.pindex,
e36e284d MD	177	m.valid,
	178	m.dirty,
	179	m.hold_count,
	180	m.wire_count,
	181	m.act_count,
	182	m.busy,
e36e284d MD	183	qstr
	184	);
	185	switch(obj.type) {
	186	case OBJT_DEFAULT:
	187	ostr = "default";
	188	break;
	189	case OBJT_SWAP:
	190	ostr = "swap";
	191	break;
	192	case OBJT_VNODE:
	193	ostr = "vnode";
	194	break;
	195	case OBJT_DEVICE:
	196	ostr = "device";
	197	break;
	198	case OBJT_PHYS:
	199	ostr = "phys";
	200	break;
	201	case OBJT_DEAD:
	202	ostr = "dead";
	203	break;
	204	default:
	205	ostr = "unknown";
	206	break;
	207	}
069cac03 MD	208	printf(" %-7s", ostr);
	209	if (m.flags & PG_BUSY)
	210	printf(" BUSY");
	211	if (m.flags & PG_WANTED)
	212	printf(" WANTED");
	213	if (m.flags & PG_WINATCFLS)
	214	printf(" WINATCFLS");
	215	if (m.flags & PG_FICTITIOUS)
	216	printf(" FICTITIOUS");
	217	if (m.flags & PG_WRITEABLE)
	218	printf(" WRITEABLE");
	219	if (m.flags & PG_MAPPED)
	220	printf(" MAPPED");
	221	if (m.flags & PG_ZERO)
	222	printf(" ZERO");
	223	if (m.flags & PG_REFERENCED)
	224	printf(" REFERENCED");
	225	if (m.flags & PG_CLEANCHK)
	226	printf(" CLEANCHK");
	227	if (m.flags & PG_SWAPINPROG)
	228	printf(" SWAPINPROG");
	229	if (m.flags & PG_NOSYNC)
	230	printf(" NOSYNC");
	231	if (m.flags & PG_UNMANAGED)
	232	printf(" UNMANAGED");
	233	if (m.flags & PG_MARKER)
	234	printf(" MARKER");
	235	if (m.flags & PG_RAM)
	236	printf(" RAM");
	237	if (m.flags & PG_SWAPPED)
	238	printf(" SWAPPED");
	239	printf("\n");
e36e284d	240	}
84b7e3cd	241	}
e36e284d	242	if (debugopt \|\| verboseopt)
84b7e3cd MD	243	printf("\n");
84b7e3cd MD	244
069cac03	245	#if 0
84b7e3cd MD	246	/*
	247	* Scan the vm_page_buckets array validating all pages found
	248	*/
	249	for (i = 0; i <= vm_page_hash_mask; ++i) {
	250	if (debugopt) {
	251	printf("index %d\r", i);
	252	fflush(stdout);
	253	}
	254	kkread(kd, (u_long)&vm_page_buckets[i], &mptr, sizeof(mptr));
	255	while (mptr) {
	256	kkread(kd, (u_long)mptr, &m, sizeof(m));
	257	if (m.object) {
	258	kkread(kd, (u_long)m.object, &obj, sizeof(obj));
	259	hv = ((uintptr_t)m.object + m.pindex) ^ obj.hash_rand;
	260	hv &= vm_page_hash_mask;
	261	if (i != hv)
	262	printf("vm_page_buckets[%d] ((struct vm_page *)%p)"
	263	" should be in bucket %d\n", i, mptr, hv);
	264	checkpage(kd, mptr, &m, &obj);
	265	} else {
	266	printf("vm_page_buckets[%d] ((struct vm_page *)%p)"
	267	" has no object\n", i, mptr);
	268	}
	269	mptr = m.hnext;
	270	}
	271	}
069cac03	272	#endif
84b7e3cd MD	273	if (debugopt)
	274	printf("\n");
	275	return(0);
	276	}
	277
	278	/*
	279	* A page with an object.
	280	*/
	281	void
	282	checkpage(kvm_t kd, vm_page_t mptr, vm_page_t m, struct vm_object obj)
	283	{
069cac03	284	#if 0
84b7e3cd MD	285	struct vm_page scan;
	286	vm_page_t scanptr;
	287	int hv;
	288
	289	hv = ((uintptr_t)m->object + m->pindex) ^ obj->hash_rand;
	290	hv &= vm_page_hash_mask;
	291	kkread(kd, (u_long)&vm_page_buckets[hv], &scanptr, sizeof(scanptr));
	292	while (scanptr) {
	293	if (scanptr == mptr)
	294	break;
	295	kkread(kd, (u_long)scanptr, &scan, sizeof(scan));
	296	scanptr = scan.hnext;
	297	}
	298	if (scanptr) {
	299	if (debugopt > 1)
	300	printf("good checkpage %p bucket %d\n", mptr, hv);
	301	} else {
	302	printf("vm_page_buckets[%d] ((struct vm_page *)%p)"
	303	" page not found in bucket list\n", hv, mptr);
	304	}
069cac03	305	#endif
84b7e3cd MD	306	}
	307
	308	void
	309	kkread(kvm_t kd, u_long addr, void buf, size_t nbytes)
	310	{
	311	if (kvm_read(kd, addr, buf, nbytes) != nbytes) {
	312	perror("kvm_read");
	313	exit(1);
	314	}
	315	}
	316