* [Bug translator/4146] New: relax begin/end probe atomicity
@ 2007-03-06 21:09 fche at redhat dot com
2007-03-07 15:44 ` [Bug translator/4146] " fche at redhat dot com
2007-03-19 14:57 ` dsmith at redhat dot com
0 siblings, 2 replies; 3+ messages in thread
From: fche at redhat dot com @ 2007-03-06 21:09 UTC (permalink / raw)
To: systemtap
This would have several parts:
- ensuring that begin/end probes get sorted before/after all other probe groups
for registration/unregistration purposes. This is to preclude reentrancy.
- removing the interrupt-disabling boilerplate from begin/end probes. This is
to permit interrupts during long-running report-generation routines.
- enlarging (but not to infinity!!) the MAXACTIVE quantity for begin/end probes.
This is to permit large reports.
- turning the MAXACTIVE enforcement logic around, to store within the context
not an upward-counting actioncount, but a downward-counting
action-remaining-count. This would be initialized to MAXACTIVE for normal
probes, but to some larger quantity for begin/end probes. (Moots bug #1884.)
Make sure that counter is *signed*, just incase we underflow it by one or two.
--
Summary: relax begin/end probe atomicity
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: translator
AssignedTo: systemtap at sources dot redhat dot com
ReportedBy: fche at redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=4146
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* [Bug translator/4146] relax begin/end probe atomicity
2007-03-06 21:09 [Bug translator/4146] New: relax begin/end probe atomicity fche at redhat dot com
@ 2007-03-07 15:44 ` fche at redhat dot com
2007-03-19 14:57 ` dsmith at redhat dot com
1 sibling, 0 replies; 3+ messages in thread
From: fche at redhat dot com @ 2007-03-07 15:44 UTC (permalink / raw)
To: systemtap
------- Additional Comments From fche at redhat dot com 2007-03-07 15:44 -------
- preempt_disable() will almost certainly have to be kept around begin/end
probes, even if interrupts are enabled.
--
http://sourceware.org/bugzilla/show_bug.cgi?id=4146
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* [Bug translator/4146] relax begin/end probe atomicity
2007-03-06 21:09 [Bug translator/4146] New: relax begin/end probe atomicity fche at redhat dot com
2007-03-07 15:44 ` [Bug translator/4146] " fche at redhat dot com
@ 2007-03-19 14:57 ` dsmith at redhat dot com
1 sibling, 0 replies; 3+ messages in thread
From: dsmith at redhat dot com @ 2007-03-19 14:57 UTC (permalink / raw)
To: systemtap
--
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|systemtap at sources dot |dsmith at redhat dot com
|redhat dot com |
Status|NEW |ASSIGNED
http://sourceware.org/bugzilla/show_bug.cgi?id=4146
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2007-03-06 21:09 [Bug translator/4146] New: relax begin/end probe atomicity fche at redhat dot com
2007-03-07 15:44 ` [Bug translator/4146] " fche at redhat dot com
2007-03-19 14:57 ` dsmith at redhat dot com
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