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From: Mike Travis <travis@sgi.com>
To: Pavel Machek <pavel@suse.cz>
Cc: Ingo Molnar <mingo@elte.hu>,
	Rusty Russell <rusty@rustcorp.com.au>,
	Andrew Morton <akpm@linux-foundation.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Jack Steiner <steiner@sgi.com>, "H. Peter Anvin" <hpa@zytor.com>,
	Richard Purdie <rpurdie@rpsys.net>,
	LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/1] SGI X86 UV: Provide a System Activity Indicator	driver
Date: Fri, 24 Oct 2008 05:14:14 -0700	[thread overview]
Message-ID: <4901BC16.4000002@sgi.com> (raw)
In-Reply-To: <20081024120103.GD1680@elf.ucw.cz>

Pavel Machek wrote:
> On Fri 2008-10-24 04:19:04, Mike Travis wrote:
>> [Ingo - could you let me know what's holding up this driver?
>> Thanks!, Mike]
> 
> I thought that...
> 
>  > +static __init void uv_scir_register_cpu_notifier(void)
>> +{
>> +	hotcpu_notifier(uv_scir_cpu_notify, 0);
>> +	idle_notifier_register(&uv_idle_notifier);
>> +}
> 
> ...Ingo said that idle_notifier_register is deprecated and going away?
> 
> 									Pavel

Is there any other way to get an indication then?  This is also in ia64 code
though not with the formality of a callback -- it's a static function pointer:

arch/ia64/kernel/process.c:
	void (*ia64_mark_idle)(int);

arch/ia64/sn/kernel/setup.c:
	ia64_mark_idle = &snidle;

arch/ia64/sn/kernel/idle.c
	void snidle(int state)
	{
	        if (state) {
	                if (pda->idle_flag == 0) {
	                        /*
	                         * Turn the activity LED off.
        	                 */
        	                set_led_bits(0, LED_CPU_ACTIVITY);
        	        }

	       	        pda->idle_flag = 1;
	        } else {
	                /*
	                 * Turn the activity LED on.
	                 */
	                set_led_bits(LED_CPU_ACTIVITY, LED_CPU_ACTIVITY);

	                pda->idle_flag = 0;
	        }
	}

As I mentioned, I would be happy to use an alternative but I haven't yet found one.
Should I put the above into x86_64?

Thanks,
Mike

  parent reply	other threads:[~2008-10-24 12:13 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-24 11:19 Mike Travis
2008-10-24 12:01 ` Pavel Machek
2008-10-24 12:05   ` Ingo Molnar
2008-10-24 12:27     ` Mike Travis
2008-10-24 18:12       ` Andi Kleen
2008-10-24 22:18         ` Mike Travis
2008-10-24 22:24           ` Mike Travis
2008-10-27 11:42             ` Ingo Molnar
2008-10-27 14:38               ` Mike Travis
2008-10-27 14:51               ` [PATCH 1/1] SGI x86 UV: Update SCIR driver to use idle_cpu function Mike Travis
2008-10-27 18:06                 ` Ingo Molnar
2008-10-27 18:46                   ` [PATCH 1/1] SGI x86 UV: Use raw_smp_processor_id Mike Travis
2008-10-25  6:56           ` [PATCH 1/1] SGI X86 UV: Provide a System Activity Indicator driver Andi Kleen
2008-10-27 15:12             ` Mike Travis
2008-10-27 11:36           ` Ingo Molnar
2008-10-27 11:43       ` Ingo Molnar
2008-10-24 12:14   ` Mike Travis [this message]
  -- strict thread matches above, loose matches on Subject: below --
2008-09-19 14:37 [PATCH 0/1] " Mike Travis
2008-09-19 14:37 ` [PATCH 1/1] " Mike Travis
2008-09-22 11:48   ` Ingo Molnar
2008-09-22 14:42     ` Mike Travis
2008-09-28 19:42       ` Pavel Machek
2008-10-01 18:15         ` Mike Travis
2008-10-01 19:41           ` Mike Travis
2008-10-02  8:37           ` Pavel Machek
2008-10-02 14:33             ` Mike Travis
2008-09-22 14:47     ` Mike Travis

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