RE: Ask help for oprofile

Hi Will and All,

Thanks for your support in advance.

My oprofile version is 0.9.5, and CPU is ARM1176JZS (Arm-v6). And kernel version is 3.4.24, configured the oprofile module and load the kernel to board, there is oprofile in /sys/module/oprofile

The following is the event file and unit_masks file.

Events file:
# ARM V6 events
#
event:0x00 counters:0,1 um:zero minimum:500 name:IFU_IFETCH_MISS : number of instruction fetch misses
event:0x01 counters:0,1 um:zero minimum:500 name:CYCLES_IFU_MEM_STALL : cycles instruction fetch pipe is stalled
event:0x02 counters:0,1 um:zero minimum:500 name:CYCLES_DATA_STALL : cycles stall occurs for due to data dependency
event:0x03 counters:0,1 um:zero minimum:500 name:ITLB_MISS : number of Instruction MicroTLB misses
event:0x04 counters:0,1 um:zero minimum:500 name:DTLB_MISS : number of Data MicroTLB misses
event:0x05 counters:0,1 um:zero minimum:500 name:BR_INST_EXECUTED : branch instruction executed w/ or w/o program flow change
event:0x06 counters:0,1 um:zero minimum:500 name:BR_INST_MISS_PRED : branch mispredicted
event:0x07 counters:0,1 um:zero minimum:500 name:INSN_EXECUTED : instructions executed
event:0x09 counters:0,1 um:zero minimum:500 name:DCACHE_ACCESS : data cache access, cacheable locations
event:0x0a counters:0,1 um:zero minimum:500 name:DCACHE_ACCESS_ALL : data cache access, all locations
event:0x0b counters:0,1 um:zero minimum:500 name:DCACHE_MISS : data cache miss
event:0x0c counters:0,1 um:zero minimum:500 name:DCACHE_WB : data cache writeback, 1 event for every half cacheline
event:0x0d counters:0,1 um:zero minimum:500 name:PC_CHANGE : number of times the program counter was changed without a mode switch
event:0x0f counters:0,1 um:zero minimum:500 name:TLB_MISS : Main TLB miss
event:0x10 counters:0,1 um:zero minimum:500 name:EXP_EXTERNAL : Explict external data access
event:0x11 counters:0,1 um:zero minimum:500 name:LSU_STALL : cycles stalled because Load Store request queque is full
event:0x12 counters:0,1 um:zero minimum:500 name:WRITE_DRAIN : Times write buffer was drained
event:0x20 counters:0,1 um:zero minimum:500 name:ETMEXTOUT0 : nuber of cycles ETMEXTOUT[0] signal was asserted
event:0x21 counters:0,1 um:zero minimum:500 name:ETMEXTOUT1 : nuber of cycles ETMEXTOUT[1] signal was asserted
event:0x22 counters:0,1 um:zero minimum:500 name:ETMEXTOUT_BOTH : nuber of cycles both ETMEXTOUT [0] and [1] were asserted * 2
event:0xff counters:0,1,2 um:zero minimum:500 name:CPU_CYCLES : clock cycles counter

unit_masks:

# ARM V6 PMU possible unit masks
#
name:zero type:mandatory default:0x00
    0x00 No unit mask
                        

In my test, I have to comment line "# 0x00 No unit mask", otherwise, it will hit following error.

~/oprofile/bin # ./opcontrol --setup --event=CPU_CYCLES:1000:0:0:1 
oprofile: parse error in /repo1/ksheng/main1230/sw/vobs/esam/build/reborn/buildroot-isam-reborn-arm-catan/output/host/usr/bin/share/oprofile//arm/armv6/unit_masks, line 4
parse_um() expected :value

Then I commented this line, will hit the following error which has been described in last mail, as follows:
~/oprofile/bin # ./opcontrol --start 
> mandatory um zero doesn't contain exactly one entry (arm/armv6)
> Using default event: CPU_CYCLES:100000:0:1:1
> mandatory um zero doesn't contain exactly one entry (arm/armv6)
> 
> ~/oprofile/bin #> 
> ~/oprofile/bin # ./opcontrol --setup --event=CPU_CYCLES:1000:0:0:1 
> --session-dir=/home/opt
> mandatory um zero doesn't contain exactly one entry (arm/armv6)
> ~/oprofile/bin #


Thanks,
Jason



-----Original Message-----
From: William Cohen [mailto:[email protected]] 
Sent: 2015年2月10日 23:23
To: SHENG Jason; oprofile-list
Subject: Re: Ask help for oprofile

On 02/10/2015 03:29 AM, SHENG Jason wrote:
> Hi Cohen,
> 
>  
> 
> From the oprpfile webpage, I found you are the current maintainers and primary contributes. And I found your mail address in webpage too. During use the oprofile on my own board, I hit an error, searched in internet, but no more help. Could you give me a hand? The following is the detailed information.
> 
>  
> 
> My board uses a ARM cpu, arm1176s. I used the cross-compile tool built out the oprofile tools and ship to my board with supported files, such as (events, unit_masks).
> 
> But when I start the “opcontrol”, it hit the following error. I searched the source code, the error message was printed in function check_unit_mask(), could you please give me a hand? Let the opcontrol can be run on my board.
> 
>  
> 
> ~/oprofile/bin #
> 
> ~/oprofile/bin # ./opcontrol --start
> 
> mandatory um zero doesn't contain exactly one entry (arm/armv6)
> 
> Using default event: CPU_CYCLES:100000:0:1:1
> 
> mandatory um zero doesn't contain exactly one entry (arm/armv6)
> 
> ~/oprofile/bin #
> 
> ~/oprofile/bin #
> 
> ~/oprofile/bin # ./opcontrol --setup --event=CPU_CYCLES:1000:0:0:1 
> --session-dir=/home/opt
> 
> mandatory um zero doesn't contain exactly one entry (arm/armv6)
> 
> ~/oprofile/bin #
> 
> ~/oprofile/bin #
> 
>  
> 
> Thanks,
> 
> Jason
> 
>  
> 


Hi Jason,

I am including the oprofile mailing list because others might come across the same problem.

I tried a similar experiment with oprofile-0.9.9 on a "ARM Cortex-A9" which should have similar event. It doesn't appear to have that problem:

[wcohen@wecf19arm ~]$ ophelp -d
CPU_CYCLES:100000:0:1:1
[wcohen@wecf19arm ~]$ sudo opcontrol --start --no-vmlinux
ATTENTION: Use of opcontrol is discouraged.  Please see the man page for operf.
Using default event: CPU_CYCLES:100000:0:1:1 Using 2.6+ OProfile kernel interface.
Using log file /var/lib/oprofile/samples/oprofiled.log
Daemon started.
Profiler running.


What version of OProfile are you using?  Also could you attach the events/arm/armv6/events and events/arm/armv6/unit_masks files from the version of oprofile you are using?

-Will
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