From: "Jack,Xie Jie" <jack.xie@dragonipt.com>
To: "dev@dpdk.org" <dev@dpdk.org>
Subject: [dpdk-dev] how does it count the number of contiguous physical pages in map_all_hugepages
Date: Fri, 16 Jan 2015 05:32:08 +0000 [thread overview]
Message-ID: <25CC404E73236E4FB06CE423D5EE8B229B4F34@AZ10EXMBX22.hosting.local> (raw)
Hi,
I am learning DPDK recently, when I check l2fwd example, I am a little confused, please someone give me a clue.
In function map_all_hugepages called in rte_eal_hugepage_init,
There are lines of source code like below to count the number of contiguous physical pages,
But I check the source code, I just cannot find where is hugepg_tbl[j].physaddr be set before,
how can here check the value of hugepg_tbl[j].physaddr.
/* reserve a virtual area for next contiguous
* physical block: count the number of
* contiguous physical pages. */
for (j = i+1; j < hpi->num_pages[0] ; j++) {
if (hugepg_tbl[j].physaddr !=
hugepg_tbl[j-1].physaddr + hugepage_sz)
break;
}
Thanks !
Jack
next reply other threads:[~2015-01-16 5:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-16 5:32 Jack,Xie Jie [this message]
2015-01-16 11:01 ` Bruce Richardson
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