From: jon-hunter@ti•com (Jon Hunter)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH V2 01/10] ARM: PMU: Add runtime PM Support
Date: Mon, 11 Jun 2012 14:01:23 -0500 [thread overview]
Message-ID: <4FD64083.3020800@ti.com> (raw)
In-Reply-To: <20120611173930.GD28235@mudshark.cambridge.arm.com>
Hi Will,
On 06/11/2012 12:39 PM, Will Deacon wrote:
> On Fri, Jun 08, 2012 at 04:24:32PM +0100, Jon Hunter wrote:
>> Hi Will,
>
> Hi Jon,
>
>> Here is an updated version. I was going to send out a V3, but I wanted
>> to wait to see if others had more comments first.
>
> This looks better to me, so I took it for a spin on my 4460 (thanks Nicolas!)
> and noticed that only the cycle counter seems to tick -- the event counters
> always return 0 deltas (that is, they don't increment). Booting the same SD
> card on a 4430 (same MLO, u-boot, kernel and filesystem) I see that the
> event counters function correctly there.
Thanks for the feedback. Being somewhat new to PMU, I was mainly using
PERF to test and verify that with "perf top" I was seeing interrupts.
How do I check what the event counters are returning? Any perf tests I
could use?
By the way, as a quick test you could modify the code in omap_init_pmu()
to call omap4430_init_pmu() for all omap4 devices as follows ...
if (cpu_is_omap44xx())
return omap4430_init_pmu();
I was hoping for 4460/70 we would not need to keep the debugss and other
domains on and hence, I called the above function omap4430_init_pmu().
However this function works for all omap4 devices, it just turns on more
power domains.
> It also seems that we can remove the dependency on CONFIG_OMAP3_EMU with these
> patches but I don't have any OMAP3 hardware to check if we get any regressions
> on older platforms. Do your patches only deal with OMAP4?
It *should* work for all omap2+. So far I have tested an omap3 beagle
but I have not tested an omap2 device. Again the extent of my testing
was to run "perf top" and verify interrupts we being generated. I
realise that this may not be sufficient and so if you have a more
exhaustive test you recommend let me know.
Cheers
Jon
next prev parent reply other threads:[~2012-06-11 19:01 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-07 21:22 [PATCH V2 00/10] ARM: OMAP4: Add PMU Support Jon Hunter
2012-06-07 21:22 ` [PATCH V2 01/10] ARM: PMU: Add runtime PM Support Jon Hunter
2012-06-08 9:47 ` Will Deacon
2012-06-08 14:17 ` Jon Hunter
2012-06-08 15:24 ` Jon Hunter
2012-06-11 17:39 ` Will Deacon
2012-06-11 19:01 ` Jon Hunter [this message]
2012-06-12 9:28 ` Will Deacon
2012-06-12 21:17 ` Jon Hunter
2012-06-12 21:31 ` Will Deacon
2012-06-12 22:41 ` Jon Hunter
2012-07-02 9:55 ` Will Deacon
2012-07-02 16:50 ` Jon Hunter
2012-07-02 22:01 ` Will Deacon
2012-07-06 0:40 ` Jon Hunter
2012-07-26 0:41 ` Jon Hunter
2012-07-26 15:05 ` Will Deacon
2012-07-26 15:16 ` Jon Hunter
2012-07-31 15:14 ` Will Deacon
2012-07-31 23:07 ` Jon Hunter
2012-08-01 20:47 ` Will Deacon
2012-08-01 22:34 ` Jon Hunter
2012-06-07 21:22 ` [PATCH V2 02/10] ARM: OMAP2+: PMU: Convert OMAP2/3 devices to use HWMOD Jon Hunter
2012-06-07 21:22 ` [PATCH V2 03/10] ARM: OMAP4: Re-map the CTIs IRQs from MPU to DEBUGSS Jon Hunter
2012-06-13 6:07 ` Pandita, Vikram
2012-06-13 6:13 ` Pandita, Vikram
2012-06-13 6:19 ` Shilimkar, Santosh
2012-06-07 21:22 ` [PATCH V2 04/10] ARM: OMAP4430: Create PMU device via HWMOD Jon Hunter
2012-06-07 21:22 ` [PATCH V2 05/10] ARM: OMAP2+: PMU: Add runtime PM support Jon Hunter
2012-06-07 21:22 ` [PATCH V2 06/10] ARM: OMAP4: Route PMU IRQs to CTI IRQs Jon Hunter
2012-06-07 21:22 ` [PATCH V2 07/10] ARM: OMAP4: CLKDM: Update supported transition modes Jon Hunter
2012-07-04 15:38 ` Paul Walmsley
2012-07-05 17:14 ` Jon Hunter
2012-06-07 21:22 ` [PATCH V2 08/10] ARM: OMAP4: Prevent EMU power domain transitioning to OFF when in-use Jon Hunter
2012-07-12 21:17 ` Paul Walmsley
2012-07-13 13:54 ` Jon Hunter
2012-07-13 14:00 ` Will Deacon
2012-07-13 14:07 ` Jon Hunter
2012-07-20 22:24 ` Jon Hunter
2012-07-13 21:00 ` Paul Walmsley
2012-07-16 18:27 ` Jon Hunter
2012-07-16 18:38 ` Paul Walmsley
2012-07-16 19:38 ` Jon Hunter
2012-07-20 22:24 ` Jon Hunter
2012-07-30 23:26 ` Jon Hunter
2012-07-31 4:36 ` Jon Hunter
2012-07-31 18:16 ` Jon Hunter
2012-08-01 0:20 ` Jon Hunter
2012-08-01 15:08 ` Paul Walmsley
2012-08-01 18:17 ` Jon Hunter
2012-08-01 15:36 ` Paul Walmsley
2012-08-01 19:41 ` Jon Hunter
2012-08-02 7:34 ` Shilimkar, Santosh
2012-10-08 22:24 ` Jon Hunter
2012-10-09 4:41 ` Paul Walmsley
2012-07-31 20:56 ` Jon Hunter
2012-06-07 21:22 ` [PATCH V2 09/10] ARM: OMAP4: Enable PMU for OMAP4460/70 Jon Hunter
2012-06-07 21:22 ` [PATCH V2 10/10] ARM: OMAP2+: PMU: Add QoS constraint Jon Hunter
2012-06-07 23:36 ` [PATCH V2 00/10] ARM: OMAP4: Add PMU Support Jon Hunter
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