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SubjectRe: 2.6.19-rc5: known regressions (v3)
Eric Dumazet wrote:
> On Wednesday 15 November 2006 11:35, Eric Dumazet wrote:
>
>>On Wednesday 15 November 2006 11:21, Adrian Bunk wrote:
>>
>>>Subject : x86_64: oprofile doesn't work
>>>References : http://lkml.org/lkml/2006/10/27/3
>>>Submitter : Prakash Punnoor <prakash@punnoor.de>
>>>Status : unknown
>>
>
> I hit the same problem on i386 architecture too, if CONFIG_ACPI is not set.
>
> # opcontrol --setup --event=RESOURCE_STALLS:1000 --vmlinux=$VMFILE
> # opcontrol --start
> /usr/bin/opcontrol: line 911: /dev/oprofile/0/enabled: No such file or
> directory
> /usr/bin/opcontrol: line 911: /dev/oprofile/0/event: No such file or directory
> /usr/bin/opcontrol: line 911: /dev/oprofile/0/count: No such file or directory
> /usr/bin/opcontrol: line 911: /dev/oprofile/0/kernel: No such file or
> directory
> /usr/bin/opcontrol: line 911: /dev/oprofile/0/user: No such file or directory
> /usr/bin/opcontrol: line 911: /dev/oprofile/0/unit_mask: No such file or
> directory
> Using 2.6+ OProfile kernel interface.
> Reading module info.
> Using log file /var/lib/oprofile/oprofiled.log
> Daemon started.
> Profiler running.
>
> # ls -l /dev/oprofile/
> total 0
> drwxr-xr-x 1 root root 0 Nov 22 11:18 1
> -rw-r--r-- 1 root root 0 Nov 22 11:18 backtrace_depth
> -rw-r--r-- 1 root root 0 Nov 22 11:18 buffer
> -rw-r--r-- 1 root root 0 Nov 22 11:18 buffer_size
> -rw-r--r-- 1 root root 0 Nov 22 11:18 buffer_watershed
> -rw-r--r-- 1 root root 0 Nov 22 11:18 cpu_buffer_size
> -rw-r--r-- 1 root root 0 Nov 22 11:18 cpu_type
> -rw-rw-rw- 1 root root 0 Nov 22 11:18 dump
> -rw-r--r-- 1 root root 0 Nov 22 11:18 enable
> -rw-r--r-- 1 root root 0 Nov 22 11:18 pointer_size
> drwxr-xr-x 1 root root 0 Nov 22 11:18 stats
> # dmesg | grep oprofile
> oprofile: using NMI interrupt.
> # opcontrol --version
> opcontrol: oprofile 0.9.2 compiled on Nov 22 2006 11:24:09
>
> Eric

Could you try the patch that I posted on the oprofile mailing list last week
November 17 2005 for op_allocate.c and see if that resolves the problem you are
having?

http://sourceforge.net/mailarchive/message.php?msg_id=37316102

-Will


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