* [Bug translator/7049] New: use raw_smp_processor_id more
@ 2008-11-25 15:59 fche at redhat dot com
2008-11-28 6:26 ` [Bug translator/7049] " wenji dot huang at oracle dot com
0 siblings, 1 reply; 2+ messages in thread
From: fche at redhat dot com @ 2008-11-25 15:59 UTC (permalink / raw)
To: systemtap
In most of our kernel-side code, translator-generated or runtime,
we use the kosher smp_processor_id function to get the cpu number.
Considering that we always disable preemption, it seems useful
to switch to raw_smp_processor_id() in several spots, which would
exclude the redundant runtime checks compiled into the plain variant.
--
Summary: use raw_smp_processor_id more
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
CC: mhiramat at redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=7049
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* [Bug translator/7049] use raw_smp_processor_id more
2008-11-25 15:59 [Bug translator/7049] New: use raw_smp_processor_id more fche at redhat dot com
@ 2008-11-28 6:26 ` wenji dot huang at oracle dot com
0 siblings, 0 replies; 2+ messages in thread
From: wenji dot huang at oracle dot com @ 2008-11-28 6:26 UTC (permalink / raw)
To: systemtap
------- Additional Comments From wenji dot huang at oracle dot com 2008-11-28 06:24 -------
Created an attachment (id=3083)
--> (http://sourceware.org/bugzilla/attachment.cgi?id=3083&action=view)
patch for using raw_smp_processor_id
Seem no much available spots, two direct ones. As for the functions calling
preempt_disable like spin_lock_irq, the following reference to smp_processor_id
isn't easily found.
--
http://sourceware.org/bugzilla/show_bug.cgi?id=7049
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2008-11-25 15:59 [Bug translator/7049] New: use raw_smp_processor_id more fche at redhat dot com
2008-11-28 6:26 ` [Bug translator/7049] " wenji dot huang at oracle dot com
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