linux-kernel - Re: [PATCH] pm: Add runtime PM statistics to sysfs

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: <AANLkTinJSHiDbAZJ6ga3AGNoZEFzyVPSrHkEocxa8M6N@mail.gmail.com>
Date:	Fri, 9 Jul 2010 15:04:59 +0800
From:	Ming Lei <tom.leiming@...il.com>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	linux-pm@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] pm: Add runtime PM statistics to sysfs

2010/7/9 Arjan van de Ven <arjan@...radead.org>:
> From: Arjan van de Ven <arjan@...ux.intel.com>
> diff --git a/include/linux/pm.h b/include/linux/pm.h
> index 8e258c7..dca597f 100644
> --- a/include/linux/pm.h
> +++ b/include/linux/pm.h
> @@ -476,9 +476,15 @@ struct dev_pm_info {
>        enum rpm_request        request;
>        enum rpm_status         runtime_status;
>        int                     runtime_error;
> +       unsigned long           active_jiffies;
> +       unsigned long           suspended_jiffies;
> +       unsigned long           accounting_timestamp;
>  #endif
>  };

USB subsystem has implemented the function already, and only two variables
are enough to do the statistics. Suggest you to make a reference to usb
implementation, maybe sizeof(unsigned long) bytes per device can be saved.

-- 
Lei Ming
--
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/