linux-kernel - Re: [PATCH] cpuidle: Measure idle state durations with monotonic clock

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAODwPW873M32d9zFT9fpJT9+PuMbz8htzUxdF1TNE+J1zR3jYA@mail.gmail.com>
Date:	Wed, 14 Nov 2012 09:15:58 -0800
From:	Julius Werner <jwerner@...omium.org>
To:	Daniel Lezcano <daniel.lezcano@...aro.org>
Cc:	linux-kernel@...r.kernel.org, Len Brown <lenb@...nel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>, Kevin Hilman <khilman@...com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>,
	linux-acpi@...r.kernel.org, linux-pm@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org,
	Deepthi Dharwar <deepthi@...ux.vnet.ibm.com>,
	Trinabh Gupta <g.trinabh@...il.com>,
	Sameer Nanda <snanda@...omium.org>,
	Lists Linaro-dev <linaro-dev@...ts.linaro.org>
Subject: Re: [PATCH] cpuidle: Measure idle state durations with monotonic clock

> Maybe you can remove all these computations and set the flag
> en_core_tk_irqen for the driver ? That will be handled by the cpuidle
> framework, no ?
>
> Same comment for the intel_idle driver.

Yeah, I thought about that, too. I was a little too afraid of touching
the sched_clock_idle_wakeup_event() parameter that is tied to the
measurement, but it seems to have been vestigial for some time now and
other drivers also just set it 0. I will whip up another version of
the patch (won't change the PPC further though, if this version works
I would just leave it at that... thanks for testing, Deepthi).
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/