* [Bug runtime/5236] New: process memory map tracker
@ 2007-10-31 20:38 fche at redhat dot com
2007-10-31 21:05 ` [Bug runtime/5236] " jkenisto at us dot ibm dot com
2008-04-30 21:13 ` fche at redhat dot com
0 siblings, 2 replies; 3+ messages in thread
From: fche at redhat dot com @ 2007-10-31 20:38 UTC (permalink / raw)
To: systemtap
we need a widget either in the systemtap runtime proper, or within
staprun/stapio, to tell a probe the memory layout of a given user process. This
is basically the contents of /proc/$$/maps, and is necessary in order to place
kprobes, relocate unwind/symbol data, and probably other stuff too. Some of it
needs to be available by probe initialization (uprobe placement) time. It needs
to be kept reasonably up to date, and readable without taking sleepy locks (for
backtrace purposes).
--
Summary: process memory map tracker
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: runtime
AssignedTo: systemtap at sources dot redhat dot com
ReportedBy: fche at redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=5236
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* [Bug runtime/5236] process memory map tracker
2007-10-31 20:38 [Bug runtime/5236] New: process memory map tracker fche at redhat dot com
@ 2007-10-31 21:05 ` jkenisto at us dot ibm dot com
2008-04-30 21:13 ` fche at redhat dot com
1 sibling, 0 replies; 3+ messages in thread
From: jkenisto at us dot ibm dot com @ 2007-10-31 21:05 UTC (permalink / raw)
To: systemtap
------- Additional Comments From jkenisto at us dot ibm dot com 2007-10-31 21:05 -------
Roland's utrace TODO list (http://people.redhat.com/roland/utrace/TODO) includes
a "mmap change event," which would presumably call a client callback when a VM
area is created/removed/resized/moved. If you could create an initial map
(possibly in a sleepy context) and then catch map changes as they happen, you
could have an up-to-date version available even in can't-sleep contexts.
--
http://sourceware.org/bugzilla/show_bug.cgi?id=5236
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* [Bug runtime/5236] process memory map tracker
2007-10-31 20:38 [Bug runtime/5236] New: process memory map tracker fche at redhat dot com
2007-10-31 21:05 ` [Bug runtime/5236] " jkenisto at us dot ibm dot com
@ 2008-04-30 21:13 ` fche at redhat dot com
1 sibling, 0 replies; 3+ messages in thread
From: fche at redhat dot com @ 2008-04-30 21:13 UTC (permalink / raw)
To: systemtap
------- Additional Comments From fche at redhat dot com 2008-04-30 20:52 -------
*** This bug has been marked as a duplicate of 5951 ***
--
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |DUPLICATE
http://sourceware.org/bugzilla/show_bug.cgi?id=5236
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2007-10-31 20:38 [Bug runtime/5236] New: process memory map tracker fche at redhat dot com
2007-10-31 21:05 ` [Bug runtime/5236] " jkenisto at us dot ibm dot com
2008-04-30 21:13 ` fche at redhat dot com
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