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From: Joel Soete <soete.joel@tiscali.be>
To: Randolph Chung <randolph@tausq.org>
Cc: parisc-linux@lists.parisc-linux.org
Subject: [id]cache meaning? [Was: [parisc-linux] 2.6.10-rc1-pa11 profile data]
Date: Sun, 28 Nov 2004 21:01:42 +0000	[thread overview]
Message-ID: <41AA3CB6.5070407@tiscali.be> (raw)
In-Reply-To: <20041111081154.GR15714@tausq.org>

Hello all,


Randolph Chung wrote:
>>I've collect two profiles for -64SMP and will collect
>>some UP profiles tomorrow. profiles so far are measuring
>>a full kernel build. I expect I'll do the same for -64UP
>>kernels too.
> 
> 
> hmm.. interesting. top consumers are (with idle loop functions removed)
> 
>  40646 flush_kernel_icache_page                 406.4600
>   7364 fdsync                                   368.2000
>  10567 flush_user_dcache_range_asm              293.5278
>  10387 flush_user_icache_range_asm              288.5278

I have additional question about such functions:

	* in parisc above ..._dcache_... refer well to data cache?
	* and respectively ..._icache_... refer to instruction cache?

Have they different meaning for generic linux?

The confusion came for me from:

include/asm-parisc/cacheflush.h:
[...]
#define flush_icache_page(vma,page)   do { flush_kernel_dcache_page(page_address(page)); 
flush_kernel_icache_page(page_address(page)); } while (0)
[...]

Thanks again,
	Joel

PS: I didn't suspect any error, I am just confused :(


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  parent reply	other threads:[~2004-11-28 21:01 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-11-11  7:54 [parisc-linux] 2.6.10-rc1-pa11 profile data Grant Grundler
2004-11-11  8:11 ` Randolph Chung
2004-11-11 17:39   ` Carlos O'Donell
2004-11-11 17:42     ` Randolph Chung
2004-11-11 17:50       ` Matthew Wilcox
2004-11-11 17:59         ` Randolph Chung
2004-11-11 18:36           ` Grant Grundler
2004-11-11 18:23   ` Joel Soete
2004-11-11 18:51     ` Randolph Chung
2004-11-26 16:59   ` flush_kernel_[di]cache_page question? [WAS: " Joel Soete
2004-11-26 17:13     ` Randolph Chung
2004-11-26 19:02     ` Grant Grundler
2004-11-28 21:01   ` Joel Soete [this message]
2004-11-28 21:13     ` [id]cache meaning? [Was: [parisc-linux] 2.6.10-rc1-pa11 profile data] Matthew Wilcox
2004-11-29  1:14       ` Michael S. Zick
2004-11-29  2:00         ` Matthew Wilcox
2004-12-01 17:44   ` More questions " Joel Soete
2004-12-01 17:56     ` Matthew Wilcox
2004-12-01 18:33       ` Joel Soete
2004-12-03 10:24     ` Joel Soete
2004-12-03 15:41       ` Randolph Chung
2004-12-07 14:42         ` Joel Soete
2004-12-03 15:00   ` *lcul and memory granularity question[Was: " Joel Soete
2004-12-03 15:13     ` Matthew Wilcox
2004-11-12  5:29 ` [parisc-linux] 2.6.10-rc1-pa11 profile data Grant Grundler

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