[id]cache meaning? [Was: [parisc-linux] 2.6.10-rc1-pa11 profile data]

[Joel Soete <soete.joel@tiscali.be>]

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 :(


_______________________________________________
parisc-linux mailing list
parisc-linux@lists.parisc-linux.org
http://lists.parisc-linux.org/mailman/listinfo/parisc-linux