From: Yunchih Chen <yunchih.cat@gmail.com>
To: Yun-Chih Chen <b03902074@ntu.edu.tw>
Cc: systemtap@sourceware.org
Subject: Re: Retrieving filename / inode from page fault probe
Date: Sun, 28 May 2017 15:40:00 -0000 [thread overview]
Message-ID: <CADV1cNigcvOR1k84eNPdfLOKsX5wApbK0EL_yTT40pqu8u8q-A@mail.gmail.com> (raw)
In-Reply-To: <CANeCTtQnRr6BQ6T2_ySopO831Ky0a1AmMVavoe8NhCcD9OBfxw@mail.gmail.com>
Well, I have managed to make it work with the following script:
probe kernel.trace("mm_filemap_add_to_page_cache") {
if($page->mapping->host->i_ino){
f = inode_path($page->mapping->host)
printf("%s Added %s \n", tz_ctime(gettimeofday_s()), f);
}
}
Some inode turn out to be 0 and causes the read fault!
prev parent reply other threads:[~2017-05-28 15:40 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-28 14:05 Yun-Chih Chen
2017-05-28 15:40 ` Yunchih Chen [this message]
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