Bug 469188 - vfs tapset enhancements
Summary: vfs tapset enhancements
Keywords:
Status: CLOSED DUPLICATE of bug 481377
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: systemtap
Version: 5.3
Hardware: All
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: Frank Ch. Eigler
QA Contact: BaseOS QE
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2008-10-30 14:34 UTC by William Cohen
Modified: 2009-02-17 17:29 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2009-02-17 17:29:31 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)

Description William Cohen 2008-10-30 14:34:48 UTC
Description of problem:

It is useful to know what device and inode reads/writes occur on. With systemtap one can follow pointers to find that information. However, that is painful for the typical users to go through the chain of pointers to find the information. There are already functions in the vfs tapset that provide that the device and inode. There are git commits that add those variables to vfs.read, vfs.write, vfs.read.return, and vfs.write.return and adjust the examples to use them:

http://sources.redhat.com/git/gitweb.cgi?p=systemtap.git;a=commit;h=44767f2025faf9cd9fed01ef5d328a2d470dbf1f

http://sources.redhat.com/git/gitweb.cgi?p=systemtap.git;a=commit;h=f2b54492ed30003763833a5a5ac210790af60ec9

http://sources.redhat.com/git/gitweb.cgi?p=systemtap.git;a=commit;h=72dde18184542ab746869bce04869c43f2436217

http://sources.redhat.com/git/gitweb.cgi?p=systemtap.git;a=commit;h=6a1d90ee1b3471847ff11e74bc2cb19928f5de1a

Comment 1 William Cohen 2008-12-03 16:07:36 UTC
is this in or out of 5.3? Having this would make the inode-watch example much simpler.

Comment 2 Frank Ch. Eigler 2008-12-03 16:15:16 UTC
It's out - was not worth the disruption that a late rebuild could cause.

Comment 3 William Cohen 2009-02-16 21:36:30 UTC
Is there going to be a respin of systemtap for 5.4?

Comment 4 Frank Ch. Eigler 2009-02-17 17:29:31 UTC

*** This bug has been marked as a duplicate of bug 481377 ***


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