linux-kernel - Re: 2.6.19-rc5: known regressions (v3)

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Date:	Wed, 22 Nov 2006 11:28:05 +0100
From:	Eric Dumazet <dada1@...mosbay.com>
To:	Adrian Bunk <bunk@...sta.de>
Cc:	Andrew Morton <akpm@...l.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Stephen Hemminger <shemminger@...l.org>, gregkh@...e.de,
	Ingo Molnar <mingo@...hat.com>,
	Len Brown <len.brown@...el.com>, Andi Kleen <ak@...e.de>,
	phil.el@...adoo.fr, oprofile-list@...ts.sourceforge.net
Subject: Re: 2.6.19-rc5: known regressions (v3)

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@...noor.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

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