Bug 458824
| Summary: | Oprofile need to enable/disable all the counters for intel family 6 | ||||||
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| Product: | Red Hat Enterprise Linux 5 | Reporter: | Markus Armbruster <armbru> | ||||
| Component: | kernel | Assignee: | Markus Armbruster <armbru> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Martin Jenner <mjenner> | ||||
| Severity: | low | Docs Contact: | |||||
| Priority: | low | ||||||
| Version: | 5.2 | CC: | bburns, dzickus, kernel-mgr, xen-maint | ||||
| Target Milestone: | rc | ||||||
| Target Release: | --- | ||||||
| Hardware: | All | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2009-01-20 20:21:28 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Bug Depends On: | 426096 | ||||||
| Bug Blocks: | 449772 | ||||||
| Attachments: |
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The upstream commit mentioned in comment#1 does not apply cleanly, because it depends on this one: commit cb9c448c661d40ce2efbce8e9c19cc4d420d8ccc Author: Don Zickus <dzickus> Date: Tue Sep 26 10:52:26 2006 +0200 [PATCH] i386: Utilize performance counter reservation framework in oprofile Incorporates the new performance counter reservation system in oprofile. Also cleans up a lot of the initialization code. The code original zero'd out every register associated with performance counters regardless if those registers were used or not. This causes issues with the nmi watchdog. Now oprofile tries to reserve registers and gives up if it can't get them. Cc: levon Cc: oprofile-list.net Signed-off-by: Don Zickus <dzickus> Signed-off-by: Andi Kleen <ak> which is just one part of a fairly invasive rework of the NMI watchdog. I figure we just need parts of the initialization cleanup here. Created attachment 314216 [details]
Make oprofile enable all perf counters on intel family 6
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release. A fix for the bugzilla is included in the latest RHEL-5 kernel package. The binary packages can be found at http://people.redhat.com/dzickus/el5 An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2009-0225.html |
From Linus's tree: commit 6b77df08a36d989f7dd00ccb6a026a0e96170d16 Author: Arun Sharma <arun.sharma> Date: Fri Sep 29 02:00:01 2006 -0700 [PATCH] oprofile: ppro: need to enable/disable all the counters Need to enable/disable all the counters instead of just counter 0. This affects all cpus with family=6, including i386/core. Usual symptom: only counter 0 provides samples. Other counters don't produce samples. Signed-off-by: Arun Sharma <arun.sharma> Cc: Philippe Elie <phil.el> Cc: John Levon <levon> Signed-off-by: Andrew Morton <akpm> Signed-off-by: Linus Torvalds <torvalds>