Bug 176601
| Summary: | Oprofile unsupported recent Pentium4 | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 4 | Reporter: | Tatsuo Kawasaki <kawasaki> |
| Component: | kernel | Assignee: | Jeff Burke <jburke> |
| Status: | CLOSED ERRATA | QA Contact: | Brian Brock <bbrock> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 4.0 | CC: | fmalita, francois-xavier.kowalski, jbaron, jknaggs, wcohen |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i686 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | RHSA-2006-0575 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2006-08-10 21:47:30 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: | |||
| Bug Blocks: | 181409 | ||
committed in stream U4 build 34.13. A test kernel with this patch is available from http://people.redhat.com/~jbaron/rhel4/ Any plans to backport this in RHEL3 kernels? another request for backport to RHEL3.. see issue tracker 94972 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 the 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-2006-0575.html Another request to have it on rhel3. Shall me/someone enter a separated bugid for this request? There should be a separate bug for RHEL3 to get it fixed in RHEL3. |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; ja-JP; rv:1.7.12) Gecko/20050921 Red Hat/1.0.7-1.4.1 Firefox/1.0.7 Description of problem: The cpuid has changed in recent Pentium4. (cpu model changed from 3 to 4). As a result, OProfile works only in the timer mode in latest Pentium4. (The cpuid of Pentium4 660 is 0F43H) This problem have been already solved in Fedora Core 5 test1.(kernel 2.6.11 or higher) ===== linux-2.6.9/arch/i386/oprofile/nmi_int.c:nmi_int.c static int __init p4_init(void) { __u8 cpu_model = current_cpu_data.x86_model; if (cpu_model > 3) return 0; <snip> } ====== linux-2.6.14/arch/i386/oprofile/nmi_int.c:nmi_int.c static int __init p4_init(char ** cpu_type) { __u8 cpu_model = boot_cpu_data.x86_model; if (cpu_model > 4) return 0; <snip> } This is very simple patch. (But It is not so good.) --- linux-2.6.9/arch/i386/oprofile/nmi_int.c.orig 2004-10-19 06:55:24.000000000 +0900 +++ linux-2.6.9/arch/i386/oprofile/nmi_int.c 2005-12-26 18:22:36.186412448 +0900 @@ -313,7 +313,7 @@ { __u8 cpu_model = current_cpu_data.x86_model; - if (cpu_model > 3) + if (cpu_model > 4) return 0; #ifndef CONFIG_SMP Version-Release number of selected component (if applicable): kernel-2.6.9-22.0.1.EL How reproducible: Always Steps to Reproduce: 1.opcontrol --init 2.op_help Actual Results: Using timer interrupt Expected Results: oprofile: available events for CPU type "P4 / Xeon with 2 hyper-threads" See Intel Architecture Developer's Manual Volume 3, Appendix A and Intel Architecture Optimization Reference Manual (730795-001) GLOBAL_POWER_EVENTS: (counter: 0) time during which processor is not stopped (min count: 6000) Unit masks (default 0x1) ---------- 0x01: mandatory BRANCH_RETIRED: (counter: 3) retired branches (min count: 6000) : : <snip> Additional info: #cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 4 model name : Intel(R) Pentium(R) 4 CPU 3.00GHz stepping : 1 cpu MHz : 3002.493 cache size : 1024 KB physical id : 0 siblings : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe pni monitor ds_cpl cid xtpr bogomips : 5914.62 processor : 1 vendor_id : GenuineIntel cpu family : 15 model : 4 model name : Intel(R) Pentium(R) 4 CPU 3.00GHz stepping : 1 cpu MHz : 3002.493 cache size : 1024 KB physical id : 0 siblings : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe pni monitor ds_cpl cid xtpr bogomips : 5996.54