Re: [PATCH v0] add nano semaphore in kernel

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From: Rakib Mullick

Subject: Re: [PATCH v0] add nano semaphore in kernel

Date: Sunday, December 26, 2010 - 2:08 am

On Sun, Dec 26, 2010 at 1:04 PM, Hillf Danton <dhillf@gmail.com> wrote:
quoted text> On Sun, Dec 26, 2010 at 2:46 PM, Rakib Mullick <rakib.mullick@gmail.com> wrote:
>> On Sun, Dec 26, 2010 at 11:13 AM, Hillf Danton <dhillf@gmail.com> wrote:
>> Above description tells how its done, what it is but its not clear why
>> we should use it. Can I know why should we use it or its benefits?
>>
>
> The outstanding benefit looks that nano semaphore could be used in
> cases where callers want to wait not only more than one jiffy, but far
> less than one jiffy also.
>
But, how do we know that resources are going to be available within
one jiffy or far less than one jiffy? We we be deterministic?

thanks,
rakib
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Messages in current thread:

[PATCH v0] add nano semaphore in kernel, Hillf Danton, (Sat Dec 25, 10:13 pm)

Re: [PATCH v0] add nano semaphore in kernel, Rakib Mullick, (Sat Dec 25, 11:46 pm)

Re: [PATCH v0] add nano semaphore in kernel, Hillf Danton, (Sun Dec 26, 12:04 am)

Re: [PATCH v0] add nano semaphore in kernel, Rakib Mullick, (Sun Dec 26, 2:08 am)

Re: [PATCH v0] add nano semaphore in kernel, Hillf Danton, (Sun Dec 26, 5:05 am)

Re: [PATCH v0] add nano semaphore in kernel, Rakib Mullick, (Sun Dec 26, 5:56 am)

Re: [PATCH v0] add nano semaphore in kernel, Hillf Danton, (Mon Dec 27, 7:04 am)

Re: [PATCH v0] add nano semaphore in kernel, Randy Dunlap, (Mon Dec 27, 1:08 pm)

Re: [PATCH v0] add nano semaphore in kernel, Arnd Bergmann, (Mon Dec 27, 2:15 pm)

Re: [PATCH v0] add nano semaphore in kernel, Hillf Danton, (Tue Dec 28, 6:13 am)

Re: [PATCH v0] add nano semaphore in kernel, Daniel Walker, (Tue Dec 28, 8:51 am)

Re: [PATCH v0] add nano semaphore in kernel, Arnd Bergmann, (Wed Dec 29, 4:47 am)

Re: [PATCH v0] add nano semaphore in kernel, Hillf Danton, (Wed Dec 29, 7:42 am)

Re: [PATCH v0] add nano semaphore in kernel, Hillf Danton, (Wed Dec 29, 7:57 am)

Re: [PATCH v0] add nano semaphore in kernel, Daniel Walker, (Wed Dec 29, 7:58 am)

Re: [PATCH v0] add nano semaphore in kernel, Hillf Danton, (Wed Dec 29, 8:03 am)

Re: [PATCH v0] add nano semaphore in kernel, Arnd Bergmann, (Wed Dec 29, 12:16 pm)

Re: [PATCH v0] add nano semaphore in kernel, Hillf Danton, (Thu Dec 30, 7:21 am)

Re: [PATCH v0] add nano semaphore in kernel, Arnd Bergmann, (Thu Dec 30, 8:56 am)

Re: [PATCH v0] add nano semaphore in kernel, Pavel Machek, (Tue Jan 4, 7:03 am)

Re: [PATCH v0] add nano semaphore in kernel, Hillf Danton, (Tue Jan 4, 7:18 am)


linux-kernel:
Greg Kroah-Hartman	[PATCH 041/196] kobject: add kobject_init_and_add function
Lukas Hejtmanek	Re: Another libata error related to OCZ SSD
Greg Kroah-Hartman	[PATCH 023/196] MCP_UCB1200: Convert from class_device to device
Florian Fainelli	Re: System clock runs too fast after 2.6.27 -> 2.6.28.1 upgrade
Christoph Lameter	[patch 1/4] mmu_notifier: Core code
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Johannes Schindelin	Re: [PATCH 1/2] Add strbuf_initf()
John Bito	[EGIT] Push to GitHub caused corruption
Jakub Narebski	Re: [PATCH 0/2] gitweb: patch view
Junio C Hamano	Re: [PATCH] When a remote is added but not fetched, tell the user.
Andy Parkins	Re: [RFC] Submodules in GIT
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Linux Kernel Mailing List	ceph: on-wire types
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Giuseppe CAVALLARO	Re: [PATCH 03/13] stmmac: add the new Header file for stmmac platform data
Taku Izumi	[PATCH 3/3] ixgbe: add registers etc. printout code just before resetting adapters
Eric Dumazet	rps: some comments
Thomas Gleixner	Re: [RFC PATCH 02/12] On Tue, 23 Sep 2008, David Miller wrote:
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