[PATCH] [CPUFREQ] VCPUFREQ: HR timer based generic cycle stealer

hrtimer.c new file mode 100644 index 000..98616a9 --- /dev/null +++ b/drivers/cpufreq/vcpufreq-hrtimer.c @@ -0,0 +1,211 @@ +/* + * Copyright 2012 Pantelis Antoniou + * + * Virtual CPUFreq glue driver for OMAP2PLUS + * + * This program is free software; you can redistribute it and/or modify + *

Re: [PATCH] [CPUFREQ] VCPUfreq: Virtual CPU frequency driver.

ss no knowledge here. Such an approach would make it usable > on all boards. > > Cheers > > Charles > > >> -Original Message- >> From: Amit Kucheria [mailto:amit.kuche...@linaro.org] >> Sent: 20 June 2012 06:30 >> To: Pantelis Antoniou >&

[PATCH] [CPUFREQ] VCPUfreq: Virtual CPU frequency driver.

diff --git a/drivers/cpufreq/vcpufreq-omap.c b/drivers/cpufreq/vcpufreq-omap.c new file mode 100644 index 000..fd789c4 --- /dev/null +++ b/drivers/cpufreq/vcpufreq-omap.c @@ -0,0 +1,251 @@ +/* + * Copyright 2012 Pantelis Antoniou + * + * Virtual CPUFreq glue driver for OMAP2PLUS + * + * This pr

Re: [PATCH] [perf] sched spr-replay load record/playback.

Thanks! FYI I'm working on some new patches which I believe make it much more robust. Plan to post something tomorrow. Regards -- Pantelis On Jun 4, 2012, at 10:01 AM, Dmitry Antipov wrote: > On 05/31/2012 11:04 PM, Pantelis Antoniou wrote: > >> Please do a perf sched spr-r

Re: [PATCH] [perf] sched spr-replay load record/playback.

Hi There, On May 31, 2012, at 5:06 PM, Dmitry Antipov wrote: > On 05/31/2012 11:41 AM, Pantelis Antoniou wrote: > >> There are a number of problems that this patch solves. > > Do you have a feedback from core perf developers? > Not yet. I need to have some internal revie

Re: [RFC] Scheduler recorder and playback

ogram should be trivially portable. I'll switch on the mainline kernel tag and retry. Regards -- Pantelis On Apr 13, 2012, at 9:27 AM, Dmitry Antipov wrote: > On 04/12/2012 04:51 PM, Pantelis Antoniou wrote: > >> The data file is not readable by me version of perf. >

Re: [RFC] Scheduler recorder and playback

Hi Dmitry, On Apr 11, 2012, at 11:02 AM, Dmitry Antipov wrote: > On 04/09/2012 09:24 PM, Pantelis Antoniou wrote: > >> Here's a updated patch for builtin-sched.c that should fix your issues. >> >> Now when you issue list a field will show the amount of nsecs t

Re: [RFC] Scheduler recorder and playback

toolchain that Linaro > is providing for over a year now? ;-) > > /Amit > > On Tue, Apr 10, 2012 at 12:46 PM, Pantelis Antoniou > wrote: > Hi Dmitry, > > I use a somewhat older compiler that doesn't whine so much, so I don't > see those warnings (don't ge

Re: [RFC] Scheduler recorder and playback

t; On Apr 10, 2012, at 12:17 PM, Dmitry Antipov wrote: > On 04/09/2012 09:24 PM, Pantelis Antoniou wrote: > >> Here's a updated patch for builtin-sched.c that should fix your issues. >> >> Now when you issue list a field will show the amount of nsecs the >> tas

Re: [RFC] Scheduler recorder and playback

Hi Dmitry, On Apr 9, 2012, at 1:07 PM, Dmitry Antipov wrote: > On 04/04/2012 05:10 PM, Pantelis Antoniou wrote: > >> The reason for the slowdown is that perf sched record default settings is >> tuned for x86 pretty much, and there's a huge amount of data being gener

Re: [RFC] Scheduler recorder and playback

mples) ] > Processed 120671 events and lost 1 chunks! > > Check IO/CPU overload! > > > > real 0m11.039s > user 0m0.141s > sys 0m1.266s > That works for spr-replay just fine; might work for you as well. Regards -- Pantelis On Apr 4, 2012, at 1:13 PM, Dmitry Antip

Re: [RFC] Scheduler recorder and playback

On Apr 4, 2012, at 1:13 PM, Dmitry Antipov wrote: > On 04/02/2012 02:18 PM, Pantelis Antoniou wrote: > >> Ah, about the load it's because perf sched record adds too many events to the >> recording (and configuring small buffers for perf). Using a smaller set >>

Re: [RFC] Scheduler recorder and playback

PM, Dmitry Antipov wrote: > On 04/02/2012 02:15 PM, Pantelis Antoniou wrote: > >>> Example session: >>> >>> # perf sched record >>> >>> < run process, etc.> >>> >>> ^C<- perf ends producing a perf.data file. &g

Re: [RFC] Scheduler recorder and playback

p with the optimal record set later this day and share. Regards -- Pantelis On Apr 2, 2012, at 1:09 PM, Dmitry Antipov wrote: > On 03/08/2012 05:20 PM, Pantelis Antoniou wrote: > >> The current issue is that scheduler development is not easily shared between >> developers.

Re: [RFC] Scheduler recorder and playback

Hi Yadi, On Mar 8, 2012, at 7:40 PM, Yadwinder Singh Brar wrote: > On Thu, Mar 8, 2012 at 6:50 PM, Pantelis Antoniou > wrote: >> >> Hi there, >> >> There's considerable activity in the subject of the scheduler lately and how >> to >> adapt it to

Re: [RFC] Scheduler recorder and playback

Hi Frederic, On Mar 8, 2012, at 5:45 PM, Frederic Weisbecker wrote: > On Thu, Mar 08, 2012 at 03:20:53PM +0200, Pantelis Antoniou wrote: >> Hi there, >> [snip] > > Hi, > > May be you could have a look at the perf sched tool. > It has a replay feature. I thin

[RFC] Scheduler recorder and playback

Hi there, There's considerable activity in the subject of the scheduler lately and how to adapt it to the peculiarities of the new class of hardware coming out lately, like the big.LITTLE class of devices from a number of manufacturers. The platforms that Linux runs are very diverse, and run dif

TI Landing Team kernel fails to build

Hi there, As of last night TILT fails to build for omap4_defconfig. > panto@sles11esa:~/ti/kernels/kernel-tilt$ git checkout -b tilt-tracking-work > origin/tilt-tracking > Branch tilt-tracking-work set up to track remote branch tilt-tracking from > origin. > Switched to a new branch 'tilt-trac