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Add ddb command 'show pginfo' which provides useful information about

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a vm page, denoted either by an address of the struct vm_page, or, if
the '/p' modifier is specified, by a physical address of the
corresponding frame.

Reviewed by:	jhb
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
This commit is contained in:
Konstantin Belousov 2013-05-21 11:04:00 +00:00
parent 6d5ae34a44
commit 4fab678be2
1 changed files with 23 additions and 0 deletions
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23
sys/vm/vm_page.c
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@ -2884,4 +2884,27 @@ DB_SHOW_COMMAND(pageq, vm_page_print_pageq_info)
*vm_pagequeues[PQ_ACTIVE].pq_cnt,
*vm_pagequeues[PQ_INACTIVE].pq_cnt);
}
DB_SHOW_COMMAND(pginfo, vm_page_print_pginfo)
{
vm_page_t m;
boolean_t phys;
if (!have_addr) {
db_printf("show pginfo addr\n");
return;
}
phys = strchr(modif, 'p') != NULL;
if (phys)
m = PHYS_TO_VM_PAGE(addr);
else
m = (vm_page_t)addr;
db_printf(
"page %p obj %p pidx 0x%jx phys 0x%jx q %d hold %d wire %d\n"
" af 0x%x of 0x%x f 0x%x act %d busy %d valid 0x%x dirty 0x%x\n",
m, m->object, (uintmax_t)m->pindex, (uintmax_t)m->phys_addr,
m->queue, m->hold_count, m->wire_count, m->aflags, m->oflags,
m->flags, m->act_count, m->busy, m->valid, m->dirty);
}
#endif /* DDB */