Bug 4511

Summary:	error for using oprofile.ko to profiling
Product:	[Build System, Metadata & Runtime] BSPs	Reporter:	jojo <rjiejie>
Component:	bsps-meta-fsl-arm	Assignee:	Daiane <angolini>
Status:	RESOLVED WONTFIX	QA Contact:
Severity:	normal
Priority:	Low	CC:	otavio, umar
Version:	1.5
Target Milestone:	1.5 M3
Hardware:	Other
OS:	arm
Whiteboard:
OS type for building Yocto:	---	Type of Regression:	New (Never tested)
Verified:		Documentation change:	Yes (doc changes required)

Description jojo 2013-05-18 11:23:53 UTC

Hi,
	I use the oprofile to measured the performance of my application, there something wrong to use the oprofile.ko as following in yocto "dylan":

	It's known issue or bug ?

root@imx6qsabresd:~# opcontrol --start --separate=lib --no-vmlinux -c 5
oprofile: using arm/armv7-ca9
ATTENTION: Use of opcontrol is discouraged.  Please see the man page for operf.
Detected stale lock file. Removing.
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.
irq 126: nobody cared (try booting with the "irqpoll" option)
[<800478f0>] (unwind_backtrace+0x0/0xf8) from [<800b08e4>] (__report_bad_irq+0x24/0xc0)
[<800b08e4>] (__report_bad_irq+0x24/0xc0) from [<800b0c2c>] (note_interrupt+0x1ec/0x248)
[<800b0c2c>] (note_interrupt+0x1ec/0x248) from [<800af168>] (handle_irq_event_percpu+0xa8/0x180)
[<800af168>] (handle_irq_event_percpu+0xa8/0x180) from [<800af27c>] (handle_irq_event+0x3c/0x5c)
[<800af27c>] (handle_irq_event+0x3c/0x5c) from [<800b15f0>] (handle_fasteoi_irq+0x98/0x158)
[<800b15f0>] (handle_fasteoi_irq+0x98/0x158) from [<800aea68>] (generic_handle_irq+0x20/0x34)
[<800aea68>] (generic_handle_irq+0x20/0x34) from [<800419b0>] (handle_IRQ+0x4c/0xb0)
[<800419b0>] (handle_IRQ+0x4c/0xb0) from [<80040b4c>] (__irq_svc+0x4c/0xe8)
[<80040b4c>] (__irq_svc+0x4c/0xe8) from [<80079618>] (__do_softirq+0x50/0x150)
[<80079618>] (__do_softirq+0x50/0x150) from [<80079ba0>] (irq_exit+0x94/0x9c)
[<80079ba0>] (irq_exit+0x94/0x9c) from [<8003b1c8>] (do_local_timer+0x70/0x94)
[<8003b1c8>] (do_local_timer+0x70/0x94) from [<80040b4c>] (__irq_svc+0x4c/0xe8)
Exception stack(0xba99bd68 to 0xba99bdb0)
bd60:                   bf1b5800 bf1b6000 00000020 0000001f bf4ac000 bf1b5000
bd80: 2ad3e000 8bfe36a0 0004f4ac ba954ab0 bac5aea0 00000002 00000000 ba99bdb0
bda0: 8004dc08 8004dad0 800f0113 ffffffff
[<80040b4c>] (__irq_svc+0x4c/0xe8) from [<8004dad0>] (v7_flush_kern_dcache_area+0x28/0x3c)
[<8004dad0>] (v7_flush_kern_dcache_area+0x28/0x3c) from [<8004dc08>] (v6_copy_user_highpage_nonaliasing+0x40/0x54)
[<8004dc08>] (v6_copy_user_highpage_nonaliasing+0x40/0x54) from [<800dc8d8>] (do_wp_page+0xe4/0x72c)
[<800dc8d8>] (do_wp_page+0xe4/0x72c) from [<800de8d8>] (handle_pte_fault+0x3b0/0x7d8)
[<800de8d8>] (handle_pte_fault+0x3b0/0x7d8) from [<800dedd0>] (handle_mm_fault+0xd0/0x120)
[<800dedd0>] (handle_mm_fault+0xd0/0x120) from [<8004b3a0>] (do_page_fault+0x18c/0x2f8)
[<8004b3a0>] (do_page_fault+0x18c/0x2f8) from [<8003b370>] (do_DataAbort+0x34/0x98)
[<8003b370>] (do_DataAbort+0x34/0x98) from [<80041084>] (ret_from_exception+0x0/0x10)
Exception stack(0xba99bfb0 to 0xba99bff8)
bfa0:                                     00000328 00000000 00000000 0000029d
bfc0: 00000328 00000000 47f01400 00000078 2ad3e4c0 0016b948 0000029d 7ee649c4
bfe0: 00000000 7ee649a8 2ad3e000 47e6bf20 600f0010 ffffffff
handlers:
[<80049c24>] armv7pmu_handle_irq
Disabling IRQ #126
Profiler running.

root@imx6qsabresd:~# testprogram

root@imx6qsabresd:~# opcontrol --stop
Stopping profiling.
root@imx6qsabresd:~# opreport -l testprogram > ~/imx6.op.txt
Using /var/lib/oprofile/samples/ for samples directory.
error: no sample files found: profile specification too strict ?

Comment 1 Umar 2013-07-17 23:03:19 UTC

I am getting the same error.  I cross compiled oprofile 0.9.8 and upon running operf, I get this crash:
 
irq 126: nobody cared (try booting with the "irqpoll" option)
[<80048854>] (unwind_backtrace+0x0/0xf8) from [<800acf20>] (__report_bad_irq+0x28/0xc4)
[<800acf20>] (__report_bad_irq+0x28/0xc4) from [<800ad264>] (note_interrupt+0x1e4/0x240)
[<800ad264>] (note_interrupt+0x1e4/0x240) from [<800ab7b0>] (handle_irq_event_percpu+0xa8/0x180)
[<800ab7b0>] (handle_irq_event_percpu+0xa8/0x180) from [<800ab8c4>] (handle_irq_event+0x3c/0x5c)
[<800ab8c4>] (handle_irq_event+0x3c/0x5c) from [<800adc48>] (handle_fasteoi_irq+0xbc/0x154)
[<800adc48>] (handle_fasteoi_irq+0xbc/0x154) from [<800ab0c0>] (generic_handle_irq+0x28/0x3c)
[<800ab0c0>] (generic_handle_irq+0x28/0x3c) from [<80042870>] (handle_IRQ+0x4c/0xac)
[<80042870>] (handle_IRQ+0x4c/0xac) from [<80041a0c>] (__irq_svc+0x4c/0xe8)
[<80041a0c>] (__irq_svc+0x4c/0xe8) from [<80106c94>] (sys_select+0xc4/0x10c)
[<80106c94>] (sys_select+0xc4/0x10c) from [<80041fc0>] (ret_fast_syscall+0x0/0x30)
handlers:
[<8004ab24>] armv7pmu_handle_irq
Disabling IRQ #126
 
My hardware is SabreSD with i.MX6Q and 4.0.0 Linux BSP.
I was really hoping to profile my app to see where I need to optimize.  Is there a fix/workaround for this? 
 
Please advise.

Comment 2 Otavio Salvador 2013-07-18 00:36:56 UTC

I don't have any know workaround or fix for this;  Daiane, do you know if it is a new or a known issue?

Comment 3 Otavio Salvador 2013-09-04 19:42:42 UTC

It is a known issue and must to be documented.

Comment 4 Daiane 2013-09-20 13:31:12 UTC

https://community.freescale.com/message/302071#302071
https://community.freescale.com/thread/307450

The error is described on ERR006259

The proposed workaround is:

Symbol: HW_PERF_EVENTS [=y]
  │ Type  : boolean  
  │ Prompt: Enable hardware performance counter support for perf events
  │   Defined at arch/arm/Kconfig:1582 
  │   Depends on: PERF_EVENTS [=y] && CPU_HAS_PMU [=y]
  │   Location: 
  │     -> Kernel Features

Comment 5 Daiane 2014-05-27 12:06:20 UTC

It´s not going to be fixed because there is no fix, only a workaround.

I´m "ACCEPTING" this, if anything else should be added in future, it can be reopened or changed on demand.

Comment 6 Otavio Salvador 2014-05-27 12:43:01 UTC

I changed it to won't fix.