Re: [patch 04/41] cpu ops: Core piece for generic atomic per cpu operations | KernelTrap

Re: [patch 04/41] cpu ops: Core piece for generic atomic per cpu operations

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From: Nick Piggin

Subject: Re: [patch 04/41] cpu ops: Core piece for generic atomic per cpu operations

Date: Wednesday, June 11, 2008 - 5:58 pm

On Thursday 12 June 2008 09:39, Christoph Lameter wrote:
quoted text> On Wed, 11 Jun 2008, Rusty Russell wrote:
> > > 4. The modeling of local_t on atomic_t limits it to 32bit!
> >
> > Again wrong.  And adding an exclamation mark doesn't make it true.
>
> Ewww ... Its atomic_long_t ahh. Ok then there no 32 bit support. What about
> pointers?

sizeof(long) == sizeof(void *) in Linux, right?

If you were to support just a single data type, long would probably
be the most useful. Still, it might be more consistent to support
int and long, same as atomic.

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Messages in current thread:

[patch 04/41] cpu ops: Core piece for generic atomic per c ..., Christoph Lameter, (Thu May 29, 8:56 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Andrew Morton, (Thu May 29, 9:58 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Christoph Lameter, (Thu May 29, 10:17 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Andrew Morton, (Thu May 29, 10:38 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Christoph Lameter, (Thu May 29, 11:12 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Rusty Russell, (Thu May 29, 11:32 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Rusty Russell, (Fri May 30, 12:05 am)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Rusty Russell, (Fri May 30, 12:08 am)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Christoph Lameter, (Fri May 30, 11:00 am)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Rusty Russell, (Sun Jun 1, 7:00 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Mike Travis, (Wed Jun 4, 11:18 am)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Rusty Russell, (Thu Jun 5, 4:59 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Christoph Lameter, (Mon Jun 9, 12:00 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Christoph Lameter, (Mon Jun 9, 4:09 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Rusty Russell, (Mon Jun 9, 4:27 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Christoph Lameter, (Mon Jun 9, 4:54 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Rusty Russell, (Mon Jun 9, 7:56 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Christoph Lameter, (Mon Jun 9, 8:18 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Christoph Lameter, (Tue Jun 10, 10:42 am)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Rusty Russell, (Tue Jun 10, 5:03 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Christoph Lameter, (Tue Jun 10, 5:15 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Rusty Russell, (Wed Jun 11, 4:10 am)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Christoph Lameter, (Wed Jun 11, 4:39 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Nick Piggin, (Wed Jun 11, 5:58 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Rusty Russell, (Wed Jun 11, 7:44 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Nick Piggin, (Wed Jun 11, 8:40 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Martin Peschke, (Thu Jun 12, 2:37 am)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Nick Piggin, (Thu Jun 12, 4:21 am)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Christoph Lameter, (Thu Jun 12, 10:19 am)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Rusty Russell, (Thu Jun 12, 5:38 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Christoph Lameter, (Thu Jun 12, 7:27 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Rusty Russell, (Sun Jun 15, 3:33 am)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Christoph Lameter, (Mon Jun 16, 7:52 am)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Rusty Russell, (Mon Jun 16, 5:24 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Christoph Lameter, (Mon Jun 16, 7:29 pm)

Re: [patch 04/41] cpu ops: Core piece for generic atomic p ..., Mike Travis, (Tue Jun 17, 7:21 am)